| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.7.2/src/hir/translate.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>translate.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../regex_syntax/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../regex_syntax/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| <span id="3554">3554</span> |
| <span id="3555">3555</span> |
| <span id="3556">3556</span> |
| <span id="3557">3557</span> |
| <span id="3558">3558</span> |
| <span id="3559">3559</span> |
| <span id="3560">3560</span> |
| <span id="3561">3561</span> |
| <span id="3562">3562</span> |
| <span id="3563">3563</span> |
| <span id="3564">3564</span> |
| <span id="3565">3565</span> |
| <span id="3566">3566</span> |
| <span id="3567">3567</span> |
| <span id="3568">3568</span> |
| <span id="3569">3569</span> |
| <span id="3570">3570</span> |
| <span id="3571">3571</span> |
| <span id="3572">3572</span> |
| <span id="3573">3573</span> |
| <span id="3574">3574</span> |
| <span id="3575">3575</span> |
| <span id="3576">3576</span> |
| <span id="3577">3577</span> |
| <span id="3578">3578</span> |
| <span id="3579">3579</span> |
| <span id="3580">3580</span> |
| <span id="3581">3581</span> |
| <span id="3582">3582</span> |
| <span id="3583">3583</span> |
| </pre><pre class="rust"><code><span class="doccomment">/*! |
| Defines a translator that converts an `Ast` to an `Hir`. |
| */ |
| |
| </span><span class="kw">use </span>core::cell::{Cell, RefCell}; |
| |
| <span class="kw">use </span>alloc::{boxed::Box, string::ToString, vec, vec::Vec}; |
| |
| <span class="kw">use crate</span>::{ |
| ast::{<span class="self">self</span>, Ast, Span, Visitor}, |
| either::Either, |
| hir::{<span class="self">self</span>, Error, ErrorKind, Hir, HirKind}, |
| unicode::{<span class="self">self</span>, ClassQuery}, |
| }; |
| |
| <span class="kw">type </span><span class="prelude-ty">Result</span><T> = core::result::Result<T, Error>; |
| |
| <span class="doccomment">/// A builder for constructing an AST->HIR translator. |
| </span><span class="attribute">#[derive(Clone, Debug)] |
| </span><span class="kw">pub struct </span>TranslatorBuilder { |
| utf8: bool, |
| flags: Flags, |
| } |
| |
| <span class="kw">impl </span>Default <span class="kw">for </span>TranslatorBuilder { |
| <span class="kw">fn </span>default() -> TranslatorBuilder { |
| TranslatorBuilder::new() |
| } |
| } |
| |
| <span class="kw">impl </span>TranslatorBuilder { |
| <span class="doccomment">/// Create a new translator builder with a default c onfiguration. |
| </span><span class="kw">pub fn </span>new() -> TranslatorBuilder { |
| TranslatorBuilder { utf8: <span class="bool-val">true</span>, flags: Flags::default() } |
| } |
| |
| <span class="doccomment">/// Build a translator using the current configuration. |
| </span><span class="kw">pub fn </span>build(<span class="kw-2">&</span><span class="self">self</span>) -> Translator { |
| Translator { |
| stack: RefCell::new(<span class="macro">vec!</span>[]), |
| flags: Cell::new(<span class="self">self</span>.flags), |
| utf8: <span class="self">self</span>.utf8, |
| } |
| } |
| |
| <span class="doccomment">/// When disabled, translation will permit the construction of a regular |
| /// expression that may match invalid UTF-8. |
| /// |
| /// When enabled (the default), the translator is guaranteed to produce an |
| /// expression that, for non-empty matches, will only ever produce spans |
| /// that are entirely valid UTF-8 (otherwise, the translator will return an |
| /// error). |
| /// |
| /// Perhaps surprisingly, when UTF-8 is enabled, an empty regex or even |
| /// a negated ASCII word boundary (uttered as `(?-u:\B)` in the concrete |
| /// syntax) will be allowed even though they can produce matches that split |
| /// a UTF-8 encoded codepoint. This only applies to zero-width or "empty" |
| /// matches, and it is expected that the regex engine itself must handle |
| /// these cases if necessary (perhaps by suppressing any zero-width matches |
| /// that split a codepoint). |
| </span><span class="kw">pub fn </span>utf8(<span class="kw-2">&mut </span><span class="self">self</span>, yes: bool) -> <span class="kw-2">&mut </span>TranslatorBuilder { |
| <span class="self">self</span>.utf8 = yes; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Enable or disable the case insensitive flag (`i`) by default. |
| </span><span class="kw">pub fn </span>case_insensitive(<span class="kw-2">&mut </span><span class="self">self</span>, yes: bool) -> <span class="kw-2">&mut </span>TranslatorBuilder { |
| <span class="self">self</span>.flags.case_insensitive = <span class="kw">if </span>yes { <span class="prelude-val">Some</span>(<span class="bool-val">true</span>) } <span class="kw">else </span>{ <span class="prelude-val">None </span>}; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Enable or disable the multi-line matching flag (`m`) by default. |
| </span><span class="kw">pub fn </span>multi_line(<span class="kw-2">&mut </span><span class="self">self</span>, yes: bool) -> <span class="kw-2">&mut </span>TranslatorBuilder { |
| <span class="self">self</span>.flags.multi_line = <span class="kw">if </span>yes { <span class="prelude-val">Some</span>(<span class="bool-val">true</span>) } <span class="kw">else </span>{ <span class="prelude-val">None </span>}; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Enable or disable the "dot matches any character" flag (`s`) by |
| /// default. |
| </span><span class="kw">pub fn </span>dot_matches_new_line( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| yes: bool, |
| ) -> <span class="kw-2">&mut </span>TranslatorBuilder { |
| <span class="self">self</span>.flags.dot_matches_new_line = <span class="kw">if </span>yes { <span class="prelude-val">Some</span>(<span class="bool-val">true</span>) } <span class="kw">else </span>{ <span class="prelude-val">None </span>}; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Enable or disable the CRLF mode flag (`R`) by default. |
| </span><span class="kw">pub fn </span>crlf(<span class="kw-2">&mut </span><span class="self">self</span>, yes: bool) -> <span class="kw-2">&mut </span>TranslatorBuilder { |
| <span class="self">self</span>.flags.crlf = <span class="kw">if </span>yes { <span class="prelude-val">Some</span>(<span class="bool-val">true</span>) } <span class="kw">else </span>{ <span class="prelude-val">None </span>}; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Enable or disable the "swap greed" flag (`U`) by default. |
| </span><span class="kw">pub fn </span>swap_greed(<span class="kw-2">&mut </span><span class="self">self</span>, yes: bool) -> <span class="kw-2">&mut </span>TranslatorBuilder { |
| <span class="self">self</span>.flags.swap_greed = <span class="kw">if </span>yes { <span class="prelude-val">Some</span>(<span class="bool-val">true</span>) } <span class="kw">else </span>{ <span class="prelude-val">None </span>}; |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Enable or disable the Unicode flag (`u`) by default. |
| </span><span class="kw">pub fn </span>unicode(<span class="kw-2">&mut </span><span class="self">self</span>, yes: bool) -> <span class="kw-2">&mut </span>TranslatorBuilder { |
| <span class="self">self</span>.flags.unicode = <span class="kw">if </span>yes { <span class="prelude-val">None </span>} <span class="kw">else </span>{ <span class="prelude-val">Some</span>(<span class="bool-val">false</span>) }; |
| <span class="self">self |
| </span>} |
| } |
| |
| <span class="doccomment">/// A translator maps abstract syntax to a high level intermediate |
| /// representation. |
| /// |
| /// A translator may be benefit from reuse. That is, a translator can translate |
| /// many abstract syntax trees. |
| /// |
| /// A `Translator` can be configured in more detail via a |
| /// [`TranslatorBuilder`]. |
| </span><span class="attribute">#[derive(Clone, Debug)] |
| </span><span class="kw">pub struct </span>Translator { |
| <span class="doccomment">/// Our call stack, but on the heap. |
| </span>stack: RefCell<Vec<HirFrame>>, |
| <span class="doccomment">/// The current flag settings. |
| </span>flags: Cell<Flags>, |
| <span class="doccomment">/// Whether we're allowed to produce HIR that can match arbitrary bytes. |
| </span>utf8: bool, |
| } |
| |
| <span class="kw">impl </span>Translator { |
| <span class="doccomment">/// Create a new translator using the default configuration. |
| </span><span class="kw">pub fn </span>new() -> Translator { |
| TranslatorBuilder::new().build() |
| } |
| |
| <span class="doccomment">/// Translate the given abstract syntax tree (AST) into a high level |
| /// intermediate representation (HIR). |
| /// |
| /// If there was a problem doing the translation, then an HIR-specific |
| /// error is returned. |
| /// |
| /// The original pattern string used to produce the `Ast` *must* also be |
| /// provided. The translator does not use the pattern string during any |
| /// correct translation, but is used for error reporting. |
| </span><span class="kw">pub fn </span>translate(<span class="kw-2">&mut </span><span class="self">self</span>, pattern: <span class="kw-2">&</span>str, ast: <span class="kw-2">&</span>Ast) -> <span class="prelude-ty">Result</span><Hir> { |
| ast::visit(ast, TranslatorI::new(<span class="self">self</span>, pattern)) |
| } |
| } |
| |
| <span class="doccomment">/// An HirFrame is a single stack frame, represented explicitly, which is |
| /// created for each item in the Ast that we traverse. |
| /// |
| /// Note that technically, this type doesn't represent our entire stack |
| /// frame. In particular, the Ast visitor represents any state associated with |
| /// traversing the Ast itself. |
| </span><span class="attribute">#[derive(Clone, Debug)] |
| </span><span class="kw">enum </span>HirFrame { |
| <span class="doccomment">/// An arbitrary HIR expression. These get pushed whenever we hit a base |
| /// case in the Ast. They get popped after an inductive (i.e., recursive) |
| /// step is complete. |
| </span>Expr(Hir), |
| <span class="doccomment">/// A literal that is being constructed, character by character, from the |
| /// AST. We need this because the AST gives each individual character its |
| /// own node. So as we see characters, we peek at the top-most HirFrame. |
| /// If it's a literal, then we add to it. Otherwise, we push a new literal. |
| /// When it comes time to pop it, we convert it to an Hir via Hir::literal. |
| </span>Literal(Vec<u8>), |
| <span class="doccomment">/// A Unicode character class. This frame is mutated as we descend into |
| /// the Ast of a character class (which is itself its own mini recursive |
| /// structure). |
| </span>ClassUnicode(hir::ClassUnicode), |
| <span class="doccomment">/// A byte-oriented character class. This frame is mutated as we descend |
| /// into the Ast of a character class (which is itself its own mini |
| /// recursive structure). |
| /// |
| /// Byte character classes are created when Unicode mode (`u`) is disabled. |
| /// If `utf8` is enabled (the default), then a byte character is only |
| /// permitted to match ASCII text. |
| </span>ClassBytes(hir::ClassBytes), |
| <span class="doccomment">/// This is pushed whenever a repetition is observed. After visiting every |
| /// sub-expression in the repetition, the translator's stack is expected to |
| /// have this sentinel at the top. |
| /// |
| /// This sentinel only exists to stop other things (like flattening |
| /// literals) from reaching across repetition operators. |
| </span>Repetition, |
| <span class="doccomment">/// This is pushed on to the stack upon first seeing any kind of capture, |
| /// indicated by parentheses (including non-capturing groups). It is popped |
| /// upon leaving a group. |
| </span>Group { |
| <span class="doccomment">/// The old active flags when this group was opened. |
| /// |
| /// If this group sets flags, then the new active flags are set to the |
| /// result of merging the old flags with the flags introduced by this |
| /// group. If the group doesn't set any flags, then this is simply |
| /// equivalent to whatever flags were set when the group was opened. |
| /// |
| /// When this group is popped, the active flags should be restored to |
| /// the flags set here. |
| /// |
| /// The "active" flags correspond to whatever flags are set in the |
| /// Translator. |
| </span>old_flags: Flags, |
| }, |
| <span class="doccomment">/// This is pushed whenever a concatenation is observed. After visiting |
| /// every sub-expression in the concatenation, the translator's stack is |
| /// popped until it sees a Concat frame. |
| </span>Concat, |
| <span class="doccomment">/// This is pushed whenever an alternation is observed. After visiting |
| /// every sub-expression in the alternation, the translator's stack is |
| /// popped until it sees an Alternation frame. |
| </span>Alternation, |
| <span class="doccomment">/// This is pushed immediately before each sub-expression in an |
| /// alternation. This separates the branches of an alternation on the |
| /// stack and prevents literal flattening from reaching across alternation |
| /// branches. |
| /// |
| /// It is popped after each expression in a branch until an 'Alternation' |
| /// frame is observed when doing a post visit on an alternation. |
| </span>AlternationBranch, |
| } |
| |
| <span class="kw">impl </span>HirFrame { |
| <span class="doccomment">/// Assert that the current stack frame is an Hir expression and return it. |
| </span><span class="kw">fn </span>unwrap_expr(<span class="self">self</span>) -> Hir { |
| <span class="kw">match </span><span class="self">self </span>{ |
| HirFrame::Expr(expr) => expr, |
| HirFrame::Literal(lit) => Hir::literal(lit), |
| <span class="kw">_ </span>=> <span class="macro">panic!</span>(<span class="string">"tried to unwrap expr from HirFrame, got: {:?}"</span>, <span class="self">self</span>), |
| } |
| } |
| |
| <span class="doccomment">/// Assert that the current stack frame is a Unicode class expression and |
| /// return it. |
| </span><span class="kw">fn </span>unwrap_class_unicode(<span class="self">self</span>) -> hir::ClassUnicode { |
| <span class="kw">match </span><span class="self">self </span>{ |
| HirFrame::ClassUnicode(cls) => cls, |
| <span class="kw">_ </span>=> <span class="macro">panic!</span>( |
| <span class="string">"tried to unwrap Unicode class \ |
| from HirFrame, got: {:?}"</span>, |
| <span class="self">self |
| </span>), |
| } |
| } |
| |
| <span class="doccomment">/// Assert that the current stack frame is a byte class expression and |
| /// return it. |
| </span><span class="kw">fn </span>unwrap_class_bytes(<span class="self">self</span>) -> hir::ClassBytes { |
| <span class="kw">match </span><span class="self">self </span>{ |
| HirFrame::ClassBytes(cls) => cls, |
| <span class="kw">_ </span>=> <span class="macro">panic!</span>( |
| <span class="string">"tried to unwrap byte class \ |
| from HirFrame, got: {:?}"</span>, |
| <span class="self">self |
| </span>), |
| } |
| } |
| |
| <span class="doccomment">/// Assert that the current stack frame is a repetition sentinel. If it |
| /// isn't, then panic. |
| </span><span class="kw">fn </span>unwrap_repetition(<span class="self">self</span>) { |
| <span class="kw">match </span><span class="self">self </span>{ |
| HirFrame::Repetition => {} |
| <span class="kw">_ </span>=> { |
| <span class="macro">panic!</span>( |
| <span class="string">"tried to unwrap repetition from HirFrame, got: {:?}"</span>, |
| <span class="self">self |
| </span>) |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Assert that the current stack frame is a group indicator and return |
| /// its corresponding flags (the flags that were active at the time the |
| /// group was entered). |
| </span><span class="kw">fn </span>unwrap_group(<span class="self">self</span>) -> Flags { |
| <span class="kw">match </span><span class="self">self </span>{ |
| HirFrame::Group { old_flags } => old_flags, |
| <span class="kw">_ </span>=> { |
| <span class="macro">panic!</span>(<span class="string">"tried to unwrap group from HirFrame, got: {:?}"</span>, <span class="self">self</span>) |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Assert that the current stack frame is an alternation pipe sentinel. If |
| /// it isn't, then panic. |
| </span><span class="kw">fn </span>unwrap_alternation_pipe(<span class="self">self</span>) { |
| <span class="kw">match </span><span class="self">self </span>{ |
| HirFrame::AlternationBranch => {} |
| <span class="kw">_ </span>=> { |
| <span class="macro">panic!</span>( |
| <span class="string">"tried to unwrap alt pipe from HirFrame, got: {:?}"</span>, |
| <span class="self">self |
| </span>) |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'t</span>, <span class="lifetime">'p</span>> Visitor <span class="kw">for </span>TranslatorI<<span class="lifetime">'t</span>, <span class="lifetime">'p</span>> { |
| <span class="kw">type </span>Output = Hir; |
| <span class="kw">type </span><span class="prelude-val">Err </span>= Error; |
| |
| <span class="kw">fn </span>finish(<span class="self">self</span>) -> <span class="prelude-ty">Result</span><Hir> { |
| <span class="comment">// ... otherwise, we should have exactly one HIR on the stack. |
| </span><span class="macro">assert_eq!</span>(<span class="self">self</span>.trans().stack.borrow().len(), <span class="number">1</span>); |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.pop().unwrap().unwrap_expr()) |
| } |
| |
| <span class="kw">fn </span>visit_pre(<span class="kw-2">&mut </span><span class="self">self</span>, ast: <span class="kw-2">&</span>Ast) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">match </span><span class="kw-2">*</span>ast { |
| Ast::Class(ast::Class::Bracketed(<span class="kw">_</span>)) => { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span>cls = hir::ClassUnicode::empty(); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>cls = hir::ClassBytes::empty(); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls)); |
| } |
| } |
| Ast::Repetition(<span class="kw">_</span>) => <span class="self">self</span>.push(HirFrame::Repetition), |
| Ast::Group(<span class="kw-2">ref </span>x) => { |
| <span class="kw">let </span>old_flags = x |
| .flags() |
| .map(|ast| <span class="self">self</span>.set_flags(ast)) |
| .unwrap_or_else(|| <span class="self">self</span>.flags()); |
| <span class="self">self</span>.push(HirFrame::Group { old_flags }); |
| } |
| Ast::Concat(<span class="kw-2">ref </span>x) <span class="kw">if </span>x.asts.is_empty() => {} |
| Ast::Concat(<span class="kw">_</span>) => { |
| <span class="self">self</span>.push(HirFrame::Concat); |
| } |
| Ast::Alternation(<span class="kw-2">ref </span>x) <span class="kw">if </span>x.asts.is_empty() => {} |
| Ast::Alternation(<span class="kw">_</span>) => { |
| <span class="self">self</span>.push(HirFrame::Alternation); |
| <span class="self">self</span>.push(HirFrame::AlternationBranch); |
| } |
| <span class="kw">_ </span>=> {} |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>visit_post(<span class="kw-2">&mut </span><span class="self">self</span>, ast: <span class="kw-2">&</span>Ast) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">match </span><span class="kw-2">*</span>ast { |
| Ast::Empty(<span class="kw">_</span>) => { |
| <span class="self">self</span>.push(HirFrame::Expr(Hir::empty())); |
| } |
| Ast::Flags(<span class="kw-2">ref </span>x) => { |
| <span class="self">self</span>.set_flags(<span class="kw-2">&</span>x.flags); |
| <span class="comment">// Flags in the AST are generally considered directives and |
| // not actual sub-expressions. However, they can be used in |
| // the concrete syntax like `((?i))`, and we need some kind of |
| // indication of an expression there, and Empty is the correct |
| // choice. |
| // |
| // There can also be things like `(?i)+`, but we rule those out |
| // in the parser. In the future, we might allow them for |
| // consistency sake. |
| </span><span class="self">self</span>.push(HirFrame::Expr(Hir::empty())); |
| } |
| Ast::Literal(<span class="kw-2">ref </span>x) => { |
| <span class="kw">match </span><span class="self">self</span>.ast_literal_to_scalar(x)<span class="question-mark">? </span>{ |
| Either::Right(byte) => <span class="self">self</span>.push_byte(byte), |
| Either::Left(ch) => { |
| <span class="kw">if </span>!<span class="self">self</span>.flags().unicode() && ch.len_utf8() > <span class="number">1 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<span class="self">self |
| </span>.error(x.span, ErrorKind::UnicodeNotAllowed)); |
| } |
| <span class="kw">match </span><span class="self">self</span>.case_fold_char(x.span, ch)<span class="question-mark">? </span>{ |
| <span class="prelude-val">None </span>=> <span class="self">self</span>.push_char(ch), |
| <span class="prelude-val">Some</span>(expr) => <span class="self">self</span>.push(HirFrame::Expr(expr)), |
| } |
| } |
| } |
| <span class="comment">// self.push(HirFrame::Expr(self.hir_literal(x)?)); |
| </span>} |
| Ast::Dot(span) => { |
| <span class="self">self</span>.push(HirFrame::Expr(<span class="self">self</span>.hir_dot(span)<span class="question-mark">?</span>)); |
| } |
| Ast::Assertion(<span class="kw-2">ref </span>x) => { |
| <span class="self">self</span>.push(HirFrame::Expr(<span class="self">self</span>.hir_assertion(x)<span class="question-mark">?</span>)); |
| } |
| Ast::Class(ast::Class::Perl(<span class="kw-2">ref </span>x)) => { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span>cls = <span class="self">self</span>.hir_perl_unicode_class(x)<span class="question-mark">?</span>; |
| <span class="kw">let </span>hcls = hir::Class::Unicode(cls); |
| <span class="self">self</span>.push(HirFrame::Expr(Hir::class(hcls))); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>cls = <span class="self">self</span>.hir_perl_byte_class(x)<span class="question-mark">?</span>; |
| <span class="kw">let </span>hcls = hir::Class::Bytes(cls); |
| <span class="self">self</span>.push(HirFrame::Expr(Hir::class(hcls))); |
| } |
| } |
| Ast::Class(ast::Class::Unicode(<span class="kw-2">ref </span>x)) => { |
| <span class="kw">let </span>cls = hir::Class::Unicode(<span class="self">self</span>.hir_unicode_class(x)<span class="question-mark">?</span>); |
| <span class="self">self</span>.push(HirFrame::Expr(Hir::class(cls))); |
| } |
| Ast::Class(ast::Class::Bracketed(<span class="kw-2">ref </span>ast)) => { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| <span class="self">self</span>.unicode_fold_and_negate( |
| <span class="kw-2">&</span>ast.span, |
| ast.negated, |
| <span class="kw-2">&mut </span>cls, |
| )<span class="question-mark">?</span>; |
| <span class="kw">let </span>expr = Hir::class(hir::Class::Unicode(cls)); |
| <span class="self">self</span>.push(HirFrame::Expr(expr)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| <span class="self">self</span>.bytes_fold_and_negate( |
| <span class="kw-2">&</span>ast.span, |
| ast.negated, |
| <span class="kw-2">&mut </span>cls, |
| )<span class="question-mark">?</span>; |
| <span class="kw">let </span>expr = Hir::class(hir::Class::Bytes(cls)); |
| <span class="self">self</span>.push(HirFrame::Expr(expr)); |
| } |
| } |
| Ast::Repetition(<span class="kw-2">ref </span>x) => { |
| <span class="kw">let </span>expr = <span class="self">self</span>.pop().unwrap().unwrap_expr(); |
| <span class="self">self</span>.pop().unwrap().unwrap_repetition(); |
| <span class="self">self</span>.push(HirFrame::Expr(<span class="self">self</span>.hir_repetition(x, expr))); |
| } |
| Ast::Group(<span class="kw-2">ref </span>x) => { |
| <span class="kw">let </span>expr = <span class="self">self</span>.pop().unwrap().unwrap_expr(); |
| <span class="kw">let </span>old_flags = <span class="self">self</span>.pop().unwrap().unwrap_group(); |
| <span class="self">self</span>.trans().flags.set(old_flags); |
| <span class="self">self</span>.push(HirFrame::Expr(<span class="self">self</span>.hir_capture(x, expr))); |
| } |
| Ast::Concat(<span class="kw">_</span>) => { |
| <span class="kw">let </span><span class="kw-2">mut </span>exprs = <span class="macro">vec!</span>[]; |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(expr) = <span class="self">self</span>.pop_concat_expr() { |
| <span class="kw">if </span>!<span class="macro">matches!</span>(<span class="kw-2">*</span>expr.kind(), HirKind::Empty) { |
| exprs.push(expr); |
| } |
| } |
| exprs.reverse(); |
| <span class="self">self</span>.push(HirFrame::Expr(Hir::concat(exprs))); |
| } |
| Ast::Alternation(<span class="kw">_</span>) => { |
| <span class="kw">let </span><span class="kw-2">mut </span>exprs = <span class="macro">vec!</span>[]; |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(expr) = <span class="self">self</span>.pop_alt_expr() { |
| <span class="self">self</span>.pop().unwrap().unwrap_alternation_pipe(); |
| exprs.push(expr); |
| } |
| exprs.reverse(); |
| <span class="self">self</span>.push(HirFrame::Expr(Hir::alternation(exprs))); |
| } |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>visit_alternation_in(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><()> { |
| <span class="self">self</span>.push(HirFrame::AlternationBranch); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>visit_class_set_item_pre( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| ast: <span class="kw-2">&</span>ast::ClassSetItem, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">match </span><span class="kw-2">*</span>ast { |
| ast::ClassSetItem::Bracketed(<span class="kw">_</span>) => { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span>cls = hir::ClassUnicode::empty(); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>cls = hir::ClassBytes::empty(); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls)); |
| } |
| } |
| <span class="comment">// We needn't handle the Union case here since the visitor will |
| // do it for us. |
| </span><span class="kw">_ </span>=> {} |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>visit_class_set_item_post( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| ast: <span class="kw-2">&</span>ast::ClassSetItem, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">match </span><span class="kw-2">*</span>ast { |
| ast::ClassSetItem::Empty(<span class="kw">_</span>) => {} |
| ast::ClassSetItem::Literal(<span class="kw-2">ref </span>x) => { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| cls.push(hir::ClassUnicodeRange::new(x.c, x.c)); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| <span class="kw">let </span>byte = <span class="self">self</span>.class_literal_byte(x)<span class="question-mark">?</span>; |
| cls.push(hir::ClassBytesRange::new(byte, byte)); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls)); |
| } |
| } |
| ast::ClassSetItem::Range(<span class="kw-2">ref </span>x) => { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| cls.push(hir::ClassUnicodeRange::new(x.start.c, x.end.c)); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| <span class="kw">let </span>start = <span class="self">self</span>.class_literal_byte(<span class="kw-2">&</span>x.start)<span class="question-mark">?</span>; |
| <span class="kw">let </span>end = <span class="self">self</span>.class_literal_byte(<span class="kw-2">&</span>x.end)<span class="question-mark">?</span>; |
| cls.push(hir::ClassBytesRange::new(start, end)); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls)); |
| } |
| } |
| ast::ClassSetItem::Ascii(<span class="kw-2">ref </span>x) => { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span>xcls = <span class="self">self</span>.hir_ascii_unicode_class(x)<span class="question-mark">?</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| cls.union(<span class="kw-2">&</span>xcls); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>xcls = <span class="self">self</span>.hir_ascii_byte_class(x)<span class="question-mark">?</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| cls.union(<span class="kw-2">&</span>xcls); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls)); |
| } |
| } |
| ast::ClassSetItem::Unicode(<span class="kw-2">ref </span>x) => { |
| <span class="kw">let </span>xcls = <span class="self">self</span>.hir_unicode_class(x)<span class="question-mark">?</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| cls.union(<span class="kw-2">&</span>xcls); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } |
| ast::ClassSetItem::Perl(<span class="kw-2">ref </span>x) => { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span>xcls = <span class="self">self</span>.hir_perl_unicode_class(x)<span class="question-mark">?</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| cls.union(<span class="kw-2">&</span>xcls); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>xcls = <span class="self">self</span>.hir_perl_byte_class(x)<span class="question-mark">?</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| cls.union(<span class="kw-2">&</span>xcls); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls)); |
| } |
| } |
| ast::ClassSetItem::Bracketed(<span class="kw-2">ref </span>ast) => { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span><span class="kw-2">mut </span>cls1 = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| <span class="self">self</span>.unicode_fold_and_negate( |
| <span class="kw-2">&</span>ast.span, |
| ast.negated, |
| <span class="kw-2">&mut </span>cls1, |
| )<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>cls2 = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| cls2.union(<span class="kw-2">&</span>cls1); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls2)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>cls1 = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| <span class="self">self</span>.bytes_fold_and_negate( |
| <span class="kw-2">&</span>ast.span, |
| ast.negated, |
| <span class="kw-2">&mut </span>cls1, |
| )<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>cls2 = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| cls2.union(<span class="kw-2">&</span>cls1); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls2)); |
| } |
| } |
| <span class="comment">// This is handled automatically by the visitor. |
| </span>ast::ClassSetItem::Union(<span class="kw">_</span>) => {} |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>visit_class_set_binary_op_pre( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| _op: <span class="kw-2">&</span>ast::ClassSetBinaryOp, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span>cls = hir::ClassUnicode::empty(); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>cls = hir::ClassBytes::empty(); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls)); |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>visit_class_set_binary_op_in( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| _op: <span class="kw-2">&</span>ast::ClassSetBinaryOp, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span>cls = hir::ClassUnicode::empty(); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>cls = hir::ClassBytes::empty(); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls)); |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>visit_class_set_binary_op_post( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| op: <span class="kw-2">&</span>ast::ClassSetBinaryOp, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="kw">use </span><span class="kw">crate</span>::ast::ClassSetBinaryOpKind::<span class="kw-2">*</span>; |
| |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">let </span><span class="kw-2">mut </span>rhs = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| <span class="kw">let </span><span class="kw-2">mut </span>lhs = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_unicode(); |
| <span class="kw">if </span><span class="self">self</span>.flags().case_insensitive() { |
| rhs.try_case_fold_simple().map_err(|<span class="kw">_</span>| { |
| <span class="self">self</span>.error( |
| op.rhs.span().clone(), |
| ErrorKind::UnicodeCaseUnavailable, |
| ) |
| })<span class="question-mark">?</span>; |
| lhs.try_case_fold_simple().map_err(|<span class="kw">_</span>| { |
| <span class="self">self</span>.error( |
| op.lhs.span().clone(), |
| ErrorKind::UnicodeCaseUnavailable, |
| ) |
| })<span class="question-mark">?</span>; |
| } |
| <span class="kw">match </span>op.kind { |
| Intersection => lhs.intersect(<span class="kw-2">&</span>rhs), |
| Difference => lhs.difference(<span class="kw-2">&</span>rhs), |
| SymmetricDifference => lhs.symmetric_difference(<span class="kw-2">&</span>rhs), |
| } |
| cls.union(<span class="kw-2">&</span>lhs); |
| <span class="self">self</span>.push(HirFrame::ClassUnicode(cls)); |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>rhs = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| <span class="kw">let </span><span class="kw-2">mut </span>lhs = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = <span class="self">self</span>.pop().unwrap().unwrap_class_bytes(); |
| <span class="kw">if </span><span class="self">self</span>.flags().case_insensitive() { |
| rhs.case_fold_simple(); |
| lhs.case_fold_simple(); |
| } |
| <span class="kw">match </span>op.kind { |
| Intersection => lhs.intersect(<span class="kw-2">&</span>rhs), |
| Difference => lhs.difference(<span class="kw-2">&</span>rhs), |
| SymmetricDifference => lhs.symmetric_difference(<span class="kw-2">&</span>rhs), |
| } |
| cls.union(<span class="kw-2">&</span>lhs); |
| <span class="self">self</span>.push(HirFrame::ClassBytes(cls)); |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="doccomment">/// The internal implementation of a translator. |
| /// |
| /// This type is responsible for carrying around the original pattern string, |
| /// which is not tied to the internal state of a translator. |
| /// |
| /// A TranslatorI exists for the time it takes to translate a single Ast. |
| </span><span class="attribute">#[derive(Clone, Debug)] |
| </span><span class="kw">struct </span>TranslatorI<<span class="lifetime">'t</span>, <span class="lifetime">'p</span>> { |
| trans: <span class="kw-2">&</span><span class="lifetime">'t </span>Translator, |
| pattern: <span class="kw-2">&</span><span class="lifetime">'p </span>str, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'t</span>, <span class="lifetime">'p</span>> TranslatorI<<span class="lifetime">'t</span>, <span class="lifetime">'p</span>> { |
| <span class="doccomment">/// Build a new internal translator. |
| </span><span class="kw">fn </span>new(trans: <span class="kw-2">&</span><span class="lifetime">'t </span>Translator, pattern: <span class="kw-2">&</span><span class="lifetime">'p </span>str) -> TranslatorI<<span class="lifetime">'t</span>, <span class="lifetime">'p</span>> { |
| TranslatorI { trans, pattern } |
| } |
| |
| <span class="doccomment">/// Return a reference to the underlying translator. |
| </span><span class="kw">fn </span>trans(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>Translator { |
| <span class="kw-2">&</span><span class="self">self</span>.trans |
| } |
| |
| <span class="doccomment">/// Push the given frame on to the call stack. |
| </span><span class="kw">fn </span>push(<span class="kw-2">&</span><span class="self">self</span>, frame: HirFrame) { |
| <span class="self">self</span>.trans().stack.borrow_mut().push(frame); |
| } |
| |
| <span class="doccomment">/// Push the given literal char on to the call stack. |
| /// |
| /// If the top-most element of the stack is a literal, then the char |
| /// is appended to the end of that literal. Otherwise, a new literal |
| /// containing just the given char is pushed to the top of the stack. |
| </span><span class="kw">fn </span>push_char(<span class="kw-2">&</span><span class="self">self</span>, ch: char) { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">4</span>]; |
| <span class="kw">let </span>bytes = ch.encode_utf8(<span class="kw-2">&mut </span>buf).as_bytes(); |
| <span class="kw">let </span><span class="kw-2">mut </span>stack = <span class="self">self</span>.trans().stack.borrow_mut(); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(HirFrame::Literal(<span class="kw-2">ref mut </span>literal)) = stack.last_mut() { |
| literal.extend_from_slice(bytes); |
| } <span class="kw">else </span>{ |
| stack.push(HirFrame::Literal(bytes.to_vec())); |
| } |
| } |
| |
| <span class="doccomment">/// Push the given literal byte on to the call stack. |
| /// |
| /// If the top-most element of the stack is a literal, then the byte |
| /// is appended to the end of that literal. Otherwise, a new literal |
| /// containing just the given byte is pushed to the top of the stack. |
| </span><span class="kw">fn </span>push_byte(<span class="kw-2">&</span><span class="self">self</span>, byte: u8) { |
| <span class="kw">let </span><span class="kw-2">mut </span>stack = <span class="self">self</span>.trans().stack.borrow_mut(); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(HirFrame::Literal(<span class="kw-2">ref mut </span>literal)) = stack.last_mut() { |
| literal.push(byte); |
| } <span class="kw">else </span>{ |
| stack.push(HirFrame::Literal(<span class="macro">vec!</span>[byte])); |
| } |
| } |
| |
| <span class="doccomment">/// Pop the top of the call stack. If the call stack is empty, return None. |
| </span><span class="kw">fn </span>pop(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><HirFrame> { |
| <span class="self">self</span>.trans().stack.borrow_mut().pop() |
| } |
| |
| <span class="doccomment">/// Pop an HIR expression from the top of the stack for a concatenation. |
| /// |
| /// This returns None if the stack is empty or when a concat frame is seen. |
| /// Otherwise, it panics if it could not find an HIR expression. |
| </span><span class="kw">fn </span>pop_concat_expr(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Hir> { |
| <span class="kw">let </span>frame = <span class="self">self</span>.pop()<span class="question-mark">?</span>; |
| <span class="kw">match </span>frame { |
| HirFrame::Concat => <span class="prelude-val">None</span>, |
| HirFrame::Expr(expr) => <span class="prelude-val">Some</span>(expr), |
| HirFrame::Literal(lit) => <span class="prelude-val">Some</span>(Hir::literal(lit)), |
| HirFrame::ClassUnicode(<span class="kw">_</span>) => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or concat, got Unicode class"</span>) |
| } |
| HirFrame::ClassBytes(<span class="kw">_</span>) => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or concat, got byte class"</span>) |
| } |
| HirFrame::Repetition => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or concat, got repetition"</span>) |
| } |
| HirFrame::Group { .. } => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or concat, got group"</span>) |
| } |
| HirFrame::Alternation => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or concat, got alt marker"</span>) |
| } |
| HirFrame::AlternationBranch => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or concat, got alt branch marker"</span>) |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Pop an HIR expression from the top of the stack for an alternation. |
| /// |
| /// This returns None if the stack is empty or when an alternation frame is |
| /// seen. Otherwise, it panics if it could not find an HIR expression. |
| </span><span class="kw">fn </span>pop_alt_expr(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Hir> { |
| <span class="kw">let </span>frame = <span class="self">self</span>.pop()<span class="question-mark">?</span>; |
| <span class="kw">match </span>frame { |
| HirFrame::Alternation => <span class="prelude-val">None</span>, |
| HirFrame::Expr(expr) => <span class="prelude-val">Some</span>(expr), |
| HirFrame::Literal(lit) => <span class="prelude-val">Some</span>(Hir::literal(lit)), |
| HirFrame::ClassUnicode(<span class="kw">_</span>) => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or alt, got Unicode class"</span>) |
| } |
| HirFrame::ClassBytes(<span class="kw">_</span>) => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or alt, got byte class"</span>) |
| } |
| HirFrame::Repetition => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or alt, got repetition"</span>) |
| } |
| HirFrame::Group { .. } => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or alt, got group"</span>) |
| } |
| HirFrame::Concat => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or alt, got concat marker"</span>) |
| } |
| HirFrame::AlternationBranch => { |
| <span class="macro">unreachable!</span>(<span class="string">"expected expr or alt, got alt branch marker"</span>) |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Create a new error with the given span and error type. |
| </span><span class="kw">fn </span>error(<span class="kw-2">&</span><span class="self">self</span>, span: Span, kind: ErrorKind) -> Error { |
| Error { kind, pattern: <span class="self">self</span>.pattern.to_string(), span } |
| } |
| |
| <span class="doccomment">/// Return a copy of the active flags. |
| </span><span class="kw">fn </span>flags(<span class="kw-2">&</span><span class="self">self</span>) -> Flags { |
| <span class="self">self</span>.trans().flags.get() |
| } |
| |
| <span class="doccomment">/// Set the flags of this translator from the flags set in the given AST. |
| /// Then, return the old flags. |
| </span><span class="kw">fn </span>set_flags(<span class="kw-2">&</span><span class="self">self</span>, ast_flags: <span class="kw-2">&</span>ast::Flags) -> Flags { |
| <span class="kw">let </span>old_flags = <span class="self">self</span>.flags(); |
| <span class="kw">let </span><span class="kw-2">mut </span>new_flags = Flags::from_ast(ast_flags); |
| new_flags.merge(<span class="kw-2">&</span>old_flags); |
| <span class="self">self</span>.trans().flags.set(new_flags); |
| old_flags |
| } |
| |
| <span class="doccomment">/// Convert an Ast literal to its scalar representation. |
| /// |
| /// When Unicode mode is enabled, then this always succeeds and returns a |
| /// `char` (Unicode scalar value). |
| /// |
| /// When Unicode mode is disabled, then a `char` will still be returned |
| /// whenever possible. A byte is returned only when invalid UTF-8 is |
| /// allowed and when the byte is not ASCII. Otherwise, a non-ASCII byte |
| /// will result in an error when invalid UTF-8 is not allowed. |
| </span><span class="kw">fn </span>ast_literal_to_scalar( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| lit: <span class="kw-2">&</span>ast::Literal, |
| ) -> <span class="prelude-ty">Result</span><Either<char, u8>> { |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(Either::Left(lit.c)); |
| } |
| <span class="kw">let </span>byte = <span class="kw">match </span>lit.byte() { |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Ok</span>(Either::Left(lit.c)), |
| <span class="prelude-val">Some</span>(byte) => byte, |
| }; |
| <span class="kw">if </span>byte <= <span class="number">0x7F </span>{ |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(Either::Left(char::try_from(byte).unwrap())); |
| } |
| <span class="kw">if </span><span class="self">self</span>.trans().utf8 { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<span class="self">self</span>.error(lit.span, ErrorKind::InvalidUtf8)); |
| } |
| <span class="prelude-val">Ok</span>(Either::Right(byte)) |
| } |
| |
| <span class="kw">fn </span>case_fold_char(<span class="kw-2">&</span><span class="self">self</span>, span: Span, c: char) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><Hir>> { |
| <span class="kw">if </span>!<span class="self">self</span>.flags().case_insensitive() { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>); |
| } |
| <span class="kw">if </span><span class="self">self</span>.flags().unicode() { |
| <span class="comment">// If case folding won't do anything, then don't bother trying. |
| </span><span class="kw">let </span>map = unicode::SimpleCaseFolder::new() |
| .map(|f| f.overlaps(c, c)) |
| .map_err(|<span class="kw">_</span>| { |
| <span class="self">self</span>.error(span, ErrorKind::UnicodeCaseUnavailable) |
| })<span class="question-mark">?</span>; |
| <span class="kw">if </span>!map { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>); |
| } |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = |
| hir::ClassUnicode::new(<span class="macro">vec!</span>[hir::ClassUnicodeRange::new( |
| c, c, |
| )]); |
| cls.try_case_fold_simple().map_err(|<span class="kw">_</span>| { |
| <span class="self">self</span>.error(span, ErrorKind::UnicodeCaseUnavailable) |
| })<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(Hir::class(hir::Class::Unicode(cls)))) |
| } <span class="kw">else </span>{ |
| <span class="kw">if </span>c.len_utf8() > <span class="number">1 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<span class="self">self</span>.error(span, ErrorKind::UnicodeNotAllowed)); |
| } |
| <span class="comment">// If case folding won't do anything, then don't bother trying. |
| </span><span class="kw">match </span>c { |
| <span class="string">'A'</span>..=<span class="string">'Z' </span>| <span class="string">'a'</span>..=<span class="string">'z' </span>=> {} |
| <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>), |
| } |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = |
| hir::ClassBytes::new(<span class="macro">vec!</span>[hir::ClassBytesRange::new( |
| <span class="comment">// OK because 'c.len_utf8() == 1' which in turn implies |
| // that 'c' is ASCII. |
| </span>u8::try_from(c).unwrap(), |
| u8::try_from(c).unwrap(), |
| )]); |
| cls.case_fold_simple(); |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(Hir::class(hir::Class::Bytes(cls)))) |
| } |
| } |
| |
| <span class="kw">fn </span>hir_dot(<span class="kw-2">&</span><span class="self">self</span>, span: Span) -> <span class="prelude-ty">Result</span><Hir> { |
| <span class="kw">if </span>!<span class="self">self</span>.flags().unicode() && <span class="self">self</span>.trans().utf8 { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<span class="self">self</span>.error(span, ErrorKind::InvalidUtf8)); |
| } |
| <span class="prelude-val">Ok</span>(Hir::dot(<span class="self">self</span>.flags().dot())) |
| } |
| |
| <span class="kw">fn </span>hir_assertion(<span class="kw-2">&</span><span class="self">self</span>, asst: <span class="kw-2">&</span>ast::Assertion) -> <span class="prelude-ty">Result</span><Hir> { |
| <span class="kw">let </span>unicode = <span class="self">self</span>.flags().unicode(); |
| <span class="kw">let </span>multi_line = <span class="self">self</span>.flags().multi_line(); |
| <span class="kw">let </span>crlf = <span class="self">self</span>.flags().crlf(); |
| <span class="prelude-val">Ok</span>(<span class="kw">match </span>asst.kind { |
| ast::AssertionKind::StartLine => Hir::look(<span class="kw">if </span>multi_line { |
| <span class="kw">if </span>crlf { |
| hir::Look::StartCRLF |
| } <span class="kw">else </span>{ |
| hir::Look::StartLF |
| } |
| } <span class="kw">else </span>{ |
| hir::Look::Start |
| }), |
| ast::AssertionKind::EndLine => Hir::look(<span class="kw">if </span>multi_line { |
| <span class="kw">if </span>crlf { |
| hir::Look::EndCRLF |
| } <span class="kw">else </span>{ |
| hir::Look::EndLF |
| } |
| } <span class="kw">else </span>{ |
| hir::Look::End |
| }), |
| ast::AssertionKind::StartText => Hir::look(hir::Look::Start), |
| ast::AssertionKind::EndText => Hir::look(hir::Look::End), |
| ast::AssertionKind::WordBoundary => Hir::look(<span class="kw">if </span>unicode { |
| hir::Look::WordUnicode |
| } <span class="kw">else </span>{ |
| hir::Look::WordAscii |
| }), |
| ast::AssertionKind::NotWordBoundary => Hir::look(<span class="kw">if </span>unicode { |
| hir::Look::WordUnicodeNegate |
| } <span class="kw">else </span>{ |
| hir::Look::WordAsciiNegate |
| }), |
| }) |
| } |
| |
| <span class="kw">fn </span>hir_capture(<span class="kw-2">&</span><span class="self">self</span>, group: <span class="kw-2">&</span>ast::Group, expr: Hir) -> Hir { |
| <span class="kw">let </span>(index, name) = <span class="kw">match </span>group.kind { |
| ast::GroupKind::CaptureIndex(index) => (index, <span class="prelude-val">None</span>), |
| ast::GroupKind::CaptureName { <span class="kw-2">ref </span>name, .. } => { |
| (name.index, <span class="prelude-val">Some</span>(name.name.clone().into_boxed_str())) |
| } |
| <span class="comment">// The HIR doesn't need to use non-capturing groups, since the way |
| // in which the data type is defined handles this automatically. |
| </span>ast::GroupKind::NonCapturing(<span class="kw">_</span>) => <span class="kw">return </span>expr, |
| }; |
| Hir::capture(hir::Capture { index, name, sub: Box::new(expr) }) |
| } |
| |
| <span class="kw">fn </span>hir_repetition(<span class="kw-2">&</span><span class="self">self</span>, rep: <span class="kw-2">&</span>ast::Repetition, expr: Hir) -> Hir { |
| <span class="kw">let </span>(min, max) = <span class="kw">match </span>rep.op.kind { |
| ast::RepetitionKind::ZeroOrOne => (<span class="number">0</span>, <span class="prelude-val">Some</span>(<span class="number">1</span>)), |
| ast::RepetitionKind::ZeroOrMore => (<span class="number">0</span>, <span class="prelude-val">None</span>), |
| ast::RepetitionKind::OneOrMore => (<span class="number">1</span>, <span class="prelude-val">None</span>), |
| ast::RepetitionKind::Range(ast::RepetitionRange::Exactly(m)) => { |
| (m, <span class="prelude-val">Some</span>(m)) |
| } |
| ast::RepetitionKind::Range(ast::RepetitionRange::AtLeast(m)) => { |
| (m, <span class="prelude-val">None</span>) |
| } |
| ast::RepetitionKind::Range(ast::RepetitionRange::Bounded( |
| m, |
| n, |
| )) => (m, <span class="prelude-val">Some</span>(n)), |
| }; |
| <span class="kw">let </span>greedy = |
| <span class="kw">if </span><span class="self">self</span>.flags().swap_greed() { !rep.greedy } <span class="kw">else </span>{ rep.greedy }; |
| Hir::repetition(hir::Repetition { |
| min, |
| max, |
| greedy, |
| sub: Box::new(expr), |
| }) |
| } |
| |
| <span class="kw">fn </span>hir_unicode_class( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| ast_class: <span class="kw-2">&</span>ast::ClassUnicode, |
| ) -> <span class="prelude-ty">Result</span><hir::ClassUnicode> { |
| <span class="kw">use </span><span class="kw">crate</span>::ast::ClassUnicodeKind::<span class="kw-2">*</span>; |
| |
| <span class="kw">if </span>!<span class="self">self</span>.flags().unicode() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>( |
| <span class="self">self</span>.error(ast_class.span, ErrorKind::UnicodeNotAllowed) |
| ); |
| } |
| <span class="kw">let </span>query = <span class="kw">match </span>ast_class.kind { |
| OneLetter(name) => ClassQuery::OneLetter(name), |
| Named(<span class="kw-2">ref </span>name) => ClassQuery::Binary(name), |
| NamedValue { <span class="kw-2">ref </span>name, <span class="kw-2">ref </span>value, .. } => ClassQuery::ByValue { |
| property_name: name, |
| property_value: value, |
| }, |
| }; |
| <span class="kw">let </span><span class="kw-2">mut </span>result = <span class="self">self</span>.convert_unicode_class_error( |
| <span class="kw-2">&</span>ast_class.span, |
| unicode::class(query), |
| ); |
| <span class="kw">if let </span><span class="prelude-val">Ok</span>(<span class="kw-2">ref mut </span>class) = result { |
| <span class="self">self</span>.unicode_fold_and_negate( |
| <span class="kw-2">&</span>ast_class.span, |
| ast_class.negated, |
| class, |
| )<span class="question-mark">?</span>; |
| } |
| result |
| } |
| |
| <span class="kw">fn </span>hir_ascii_unicode_class( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| ast: <span class="kw-2">&</span>ast::ClassAscii, |
| ) -> <span class="prelude-ty">Result</span><hir::ClassUnicode> { |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = hir::ClassUnicode::new( |
| ascii_class_as_chars(<span class="kw-2">&</span>ast.kind) |
| .map(|(s, e)| hir::ClassUnicodeRange::new(s, e)), |
| ); |
| <span class="self">self</span>.unicode_fold_and_negate(<span class="kw-2">&</span>ast.span, ast.negated, <span class="kw-2">&mut </span>cls)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(cls) |
| } |
| |
| <span class="kw">fn </span>hir_ascii_byte_class( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| ast: <span class="kw-2">&</span>ast::ClassAscii, |
| ) -> <span class="prelude-ty">Result</span><hir::ClassBytes> { |
| <span class="kw">let </span><span class="kw-2">mut </span>cls = hir::ClassBytes::new( |
| ascii_class(<span class="kw-2">&</span>ast.kind) |
| .map(|(s, e)| hir::ClassBytesRange::new(s, e)), |
| ); |
| <span class="self">self</span>.bytes_fold_and_negate(<span class="kw-2">&</span>ast.span, ast.negated, <span class="kw-2">&mut </span>cls)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(cls) |
| } |
| |
| <span class="kw">fn </span>hir_perl_unicode_class( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| ast_class: <span class="kw-2">&</span>ast::ClassPerl, |
| ) -> <span class="prelude-ty">Result</span><hir::ClassUnicode> { |
| <span class="kw">use </span><span class="kw">crate</span>::ast::ClassPerlKind::<span class="kw-2">*</span>; |
| |
| <span class="macro">assert!</span>(<span class="self">self</span>.flags().unicode()); |
| <span class="kw">let </span>result = <span class="kw">match </span>ast_class.kind { |
| Digit => unicode::perl_digit(), |
| Space => unicode::perl_space(), |
| Word => unicode::perl_word(), |
| }; |
| <span class="kw">let </span><span class="kw-2">mut </span>class = |
| <span class="self">self</span>.convert_unicode_class_error(<span class="kw-2">&</span>ast_class.span, result)<span class="question-mark">?</span>; |
| <span class="comment">// We needn't apply case folding here because the Perl Unicode classes |
| // are already closed under Unicode simple case folding. |
| </span><span class="kw">if </span>ast_class.negated { |
| class.negate(); |
| } |
| <span class="prelude-val">Ok</span>(class) |
| } |
| |
| <span class="kw">fn </span>hir_perl_byte_class( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| ast_class: <span class="kw-2">&</span>ast::ClassPerl, |
| ) -> <span class="prelude-ty">Result</span><hir::ClassBytes> { |
| <span class="kw">use </span><span class="kw">crate</span>::ast::ClassPerlKind::<span class="kw-2">*</span>; |
| |
| <span class="macro">assert!</span>(!<span class="self">self</span>.flags().unicode()); |
| <span class="kw">let </span><span class="kw-2">mut </span>class = <span class="kw">match </span>ast_class.kind { |
| Digit => hir_ascii_class_bytes(<span class="kw-2">&</span>ast::ClassAsciiKind::Digit), |
| Space => hir_ascii_class_bytes(<span class="kw-2">&</span>ast::ClassAsciiKind::Space), |
| Word => hir_ascii_class_bytes(<span class="kw-2">&</span>ast::ClassAsciiKind::Word), |
| }; |
| <span class="comment">// We needn't apply case folding here because the Perl ASCII classes |
| // are already closed (under ASCII case folding). |
| </span><span class="kw">if </span>ast_class.negated { |
| class.negate(); |
| } |
| <span class="comment">// Negating a Perl byte class is likely to cause it to match invalid |
| // UTF-8. That's only OK if the translator is configured to allow such |
| // things. |
| </span><span class="kw">if </span><span class="self">self</span>.trans().utf8 && !class.is_ascii() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<span class="self">self</span>.error(ast_class.span, ErrorKind::InvalidUtf8)); |
| } |
| <span class="prelude-val">Ok</span>(class) |
| } |
| |
| <span class="doccomment">/// Converts the given Unicode specific error to an HIR translation error. |
| /// |
| /// The span given should approximate the position at which an error would |
| /// occur. |
| </span><span class="kw">fn </span>convert_unicode_class_error( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| span: <span class="kw-2">&</span>Span, |
| result: core::result::Result<hir::ClassUnicode, unicode::Error>, |
| ) -> <span class="prelude-ty">Result</span><hir::ClassUnicode> { |
| result.map_err(|err| { |
| <span class="kw">let </span>sp = span.clone(); |
| <span class="kw">match </span>err { |
| unicode::Error::PropertyNotFound => { |
| <span class="self">self</span>.error(sp, ErrorKind::UnicodePropertyNotFound) |
| } |
| unicode::Error::PropertyValueNotFound => { |
| <span class="self">self</span>.error(sp, ErrorKind::UnicodePropertyValueNotFound) |
| } |
| unicode::Error::PerlClassNotFound => { |
| <span class="self">self</span>.error(sp, ErrorKind::UnicodePerlClassNotFound) |
| } |
| } |
| }) |
| } |
| |
| <span class="kw">fn </span>unicode_fold_and_negate( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| span: <span class="kw-2">&</span>Span, |
| negated: bool, |
| class: <span class="kw-2">&mut </span>hir::ClassUnicode, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="comment">// Note that we must apply case folding before negation! |
| // Consider `(?i)[^x]`. If we applied negation first, then |
| // the result would be the character class that matched any |
| // Unicode scalar value. |
| </span><span class="kw">if </span><span class="self">self</span>.flags().case_insensitive() { |
| class.try_case_fold_simple().map_err(|<span class="kw">_</span>| { |
| <span class="self">self</span>.error(span.clone(), ErrorKind::UnicodeCaseUnavailable) |
| })<span class="question-mark">?</span>; |
| } |
| <span class="kw">if </span>negated { |
| class.negate(); |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>bytes_fold_and_negate( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| span: <span class="kw-2">&</span>Span, |
| negated: bool, |
| class: <span class="kw-2">&mut </span>hir::ClassBytes, |
| ) -> <span class="prelude-ty">Result</span><()> { |
| <span class="comment">// Note that we must apply case folding before negation! |
| // Consider `(?i)[^x]`. If we applied negation first, then |
| // the result would be the character class that matched any |
| // Unicode scalar value. |
| </span><span class="kw">if </span><span class="self">self</span>.flags().case_insensitive() { |
| class.case_fold_simple(); |
| } |
| <span class="kw">if </span>negated { |
| class.negate(); |
| } |
| <span class="kw">if </span><span class="self">self</span>.trans().utf8 && !class.is_ascii() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<span class="self">self</span>.error(span.clone(), ErrorKind::InvalidUtf8)); |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="doccomment">/// Return a scalar byte value suitable for use as a literal in a byte |
| /// character class. |
| </span><span class="kw">fn </span>class_literal_byte(<span class="kw-2">&</span><span class="self">self</span>, ast: <span class="kw-2">&</span>ast::Literal) -> <span class="prelude-ty">Result</span><u8> { |
| <span class="kw">match </span><span class="self">self</span>.ast_literal_to_scalar(ast)<span class="question-mark">? </span>{ |
| Either::Right(byte) => <span class="prelude-val">Ok</span>(byte), |
| Either::Left(ch) => { |
| <span class="kw">let </span>cp = u32::from(ch); |
| <span class="kw">if </span>cp <= <span class="number">0x7F </span>{ |
| <span class="prelude-val">Ok</span>(u8::try_from(cp).unwrap()) |
| } <span class="kw">else </span>{ |
| <span class="comment">// We can't feasibly support Unicode in |
| // byte oriented classes. Byte classes don't |
| // do Unicode case folding. |
| </span><span class="prelude-val">Err</span>(<span class="self">self</span>.error(ast.span, ErrorKind::UnicodeNotAllowed)) |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="doccomment">/// A translator's representation of a regular expression's flags at any given |
| /// moment in time. |
| /// |
| /// Each flag can be in one of three states: absent, present but disabled or |
| /// present but enabled. |
| </span><span class="attribute">#[derive(Clone, Copy, Debug, Default)] |
| </span><span class="kw">struct </span>Flags { |
| case_insensitive: <span class="prelude-ty">Option</span><bool>, |
| multi_line: <span class="prelude-ty">Option</span><bool>, |
| dot_matches_new_line: <span class="prelude-ty">Option</span><bool>, |
| swap_greed: <span class="prelude-ty">Option</span><bool>, |
| unicode: <span class="prelude-ty">Option</span><bool>, |
| crlf: <span class="prelude-ty">Option</span><bool>, |
| <span class="comment">// Note that `ignore_whitespace` is omitted here because it is handled |
| // entirely in the parser. |
| </span>} |
| |
| <span class="kw">impl </span>Flags { |
| <span class="kw">fn </span>from_ast(ast: <span class="kw-2">&</span>ast::Flags) -> Flags { |
| <span class="kw">let </span><span class="kw-2">mut </span>flags = Flags::default(); |
| <span class="kw">let </span><span class="kw-2">mut </span>enable = <span class="bool-val">true</span>; |
| <span class="kw">for </span>item <span class="kw">in </span><span class="kw-2">&</span>ast.items { |
| <span class="kw">match </span>item.kind { |
| ast::FlagsItemKind::Negation => { |
| enable = <span class="bool-val">false</span>; |
| } |
| ast::FlagsItemKind::Flag(ast::Flag::CaseInsensitive) => { |
| flags.case_insensitive = <span class="prelude-val">Some</span>(enable); |
| } |
| ast::FlagsItemKind::Flag(ast::Flag::MultiLine) => { |
| flags.multi_line = <span class="prelude-val">Some</span>(enable); |
| } |
| ast::FlagsItemKind::Flag(ast::Flag::DotMatchesNewLine) => { |
| flags.dot_matches_new_line = <span class="prelude-val">Some</span>(enable); |
| } |
| ast::FlagsItemKind::Flag(ast::Flag::SwapGreed) => { |
| flags.swap_greed = <span class="prelude-val">Some</span>(enable); |
| } |
| ast::FlagsItemKind::Flag(ast::Flag::Unicode) => { |
| flags.unicode = <span class="prelude-val">Some</span>(enable); |
| } |
| ast::FlagsItemKind::Flag(ast::Flag::CRLF) => { |
| flags.crlf = <span class="prelude-val">Some</span>(enable); |
| } |
| ast::FlagsItemKind::Flag(ast::Flag::IgnoreWhitespace) => {} |
| } |
| } |
| flags |
| } |
| |
| <span class="kw">fn </span>merge(<span class="kw-2">&mut </span><span class="self">self</span>, previous: <span class="kw-2">&</span>Flags) { |
| <span class="kw">if </span><span class="self">self</span>.case_insensitive.is_none() { |
| <span class="self">self</span>.case_insensitive = previous.case_insensitive; |
| } |
| <span class="kw">if </span><span class="self">self</span>.multi_line.is_none() { |
| <span class="self">self</span>.multi_line = previous.multi_line; |
| } |
| <span class="kw">if </span><span class="self">self</span>.dot_matches_new_line.is_none() { |
| <span class="self">self</span>.dot_matches_new_line = previous.dot_matches_new_line; |
| } |
| <span class="kw">if </span><span class="self">self</span>.swap_greed.is_none() { |
| <span class="self">self</span>.swap_greed = previous.swap_greed; |
| } |
| <span class="kw">if </span><span class="self">self</span>.unicode.is_none() { |
| <span class="self">self</span>.unicode = previous.unicode; |
| } |
| <span class="kw">if </span><span class="self">self</span>.crlf.is_none() { |
| <span class="self">self</span>.crlf = previous.crlf; |
| } |
| } |
| |
| <span class="kw">fn </span>dot(<span class="kw-2">&</span><span class="self">self</span>) -> hir::Dot { |
| <span class="kw">if </span><span class="self">self</span>.dot_matches_new_line() { |
| <span class="kw">if </span><span class="self">self</span>.unicode() { |
| hir::Dot::AnyChar |
| } <span class="kw">else </span>{ |
| hir::Dot::AnyByte |
| } |
| } <span class="kw">else </span>{ |
| <span class="kw">if </span><span class="self">self</span>.unicode() { |
| <span class="kw">if </span><span class="self">self</span>.crlf() { |
| hir::Dot::AnyCharExceptCRLF |
| } <span class="kw">else </span>{ |
| hir::Dot::AnyCharExceptLF |
| } |
| } <span class="kw">else </span>{ |
| <span class="kw">if </span><span class="self">self</span>.crlf() { |
| hir::Dot::AnyByteExceptCRLF |
| } <span class="kw">else </span>{ |
| hir::Dot::AnyByteExceptLF |
| } |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>case_insensitive(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.case_insensitive.unwrap_or(<span class="bool-val">false</span>) |
| } |
| |
| <span class="kw">fn </span>multi_line(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.multi_line.unwrap_or(<span class="bool-val">false</span>) |
| } |
| |
| <span class="kw">fn </span>dot_matches_new_line(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.dot_matches_new_line.unwrap_or(<span class="bool-val">false</span>) |
| } |
| |
| <span class="kw">fn </span>swap_greed(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.swap_greed.unwrap_or(<span class="bool-val">false</span>) |
| } |
| |
| <span class="kw">fn </span>unicode(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.unicode.unwrap_or(<span class="bool-val">true</span>) |
| } |
| |
| <span class="kw">fn </span>crlf(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.crlf.unwrap_or(<span class="bool-val">false</span>) |
| } |
| } |
| |
| <span class="kw">fn </span>hir_ascii_class_bytes(kind: <span class="kw-2">&</span>ast::ClassAsciiKind) -> hir::ClassBytes { |
| <span class="kw">let </span>ranges: Vec<<span class="kw">_</span>> = ascii_class(kind) |
| .map(|(s, e)| hir::ClassBytesRange::new(s, e)) |
| .collect(); |
| hir::ClassBytes::new(ranges) |
| } |
| |
| <span class="kw">fn </span>ascii_class(kind: <span class="kw-2">&</span>ast::ClassAsciiKind) -> <span class="kw">impl </span>Iterator<Item = (u8, u8)> { |
| <span class="kw">use </span><span class="kw">crate</span>::ast::ClassAsciiKind::<span class="kw-2">*</span>; |
| |
| <span class="kw">let </span>slice: <span class="kw-2">&</span><span class="lifetime">'static </span>[(u8, u8)] = <span class="kw">match </span><span class="kw-2">*</span>kind { |
| Alnum => <span class="kw-2">&</span>[(<span class="string">b'0'</span>, <span class="string">b'9'</span>), (<span class="string">b'A'</span>, <span class="string">b'Z'</span>), (<span class="string">b'a'</span>, <span class="string">b'z'</span>)], |
| Alpha => <span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'Z'</span>), (<span class="string">b'a'</span>, <span class="string">b'z'</span>)], |
| Ascii => <span class="kw-2">&</span>[(<span class="string">b'\x00'</span>, <span class="string">b'\x7F'</span>)], |
| Blank => <span class="kw-2">&</span>[(<span class="string">b'\t'</span>, <span class="string">b'\t'</span>), (<span class="string">b' '</span>, <span class="string">b' '</span>)], |
| Cntrl => <span class="kw-2">&</span>[(<span class="string">b'\x00'</span>, <span class="string">b'\x1F'</span>), (<span class="string">b'\x7F'</span>, <span class="string">b'\x7F'</span>)], |
| Digit => <span class="kw-2">&</span>[(<span class="string">b'0'</span>, <span class="string">b'9'</span>)], |
| Graph => <span class="kw-2">&</span>[(<span class="string">b'!'</span>, <span class="string">b'~'</span>)], |
| Lower => <span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'z'</span>)], |
| Print => <span class="kw-2">&</span>[(<span class="string">b' '</span>, <span class="string">b'~'</span>)], |
| Punct => <span class="kw-2">&</span>[(<span class="string">b'!'</span>, <span class="string">b'/'</span>), (<span class="string">b':'</span>, <span class="string">b'@'</span>), (<span class="string">b'['</span>, <span class="string">b'`'</span>), (<span class="string">b'{'</span>, <span class="string">b'~'</span>)], |
| Space => <span class="kw-2">&</span>[ |
| (<span class="string">b'\t'</span>, <span class="string">b'\t'</span>), |
| (<span class="string">b'\n'</span>, <span class="string">b'\n'</span>), |
| (<span class="string">b'\x0B'</span>, <span class="string">b'\x0B'</span>), |
| (<span class="string">b'\x0C'</span>, <span class="string">b'\x0C'</span>), |
| (<span class="string">b'\r'</span>, <span class="string">b'\r'</span>), |
| (<span class="string">b' '</span>, <span class="string">b' '</span>), |
| ], |
| Upper => <span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'Z'</span>)], |
| Word => <span class="kw-2">&</span>[(<span class="string">b'0'</span>, <span class="string">b'9'</span>), (<span class="string">b'A'</span>, <span class="string">b'Z'</span>), (<span class="string">b'_'</span>, <span class="string">b'_'</span>), (<span class="string">b'a'</span>, <span class="string">b'z'</span>)], |
| Xdigit => <span class="kw-2">&</span>[(<span class="string">b'0'</span>, <span class="string">b'9'</span>), (<span class="string">b'A'</span>, <span class="string">b'F'</span>), (<span class="string">b'a'</span>, <span class="string">b'f'</span>)], |
| }; |
| slice.iter().copied() |
| } |
| |
| <span class="kw">fn </span>ascii_class_as_chars( |
| kind: <span class="kw-2">&</span>ast::ClassAsciiKind, |
| ) -> <span class="kw">impl </span>Iterator<Item = (char, char)> { |
| ascii_class(kind).map(|(s, e)| (char::from(s), char::from(e))) |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use crate</span>::{ |
| ast::{<span class="self">self</span>, parse::ParserBuilder, Ast, Position, Span}, |
| hir::{<span class="self">self</span>, Hir, HirKind, Look, Properties}, |
| unicode::{<span class="self">self</span>, ClassQuery}, |
| }; |
| |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="comment">// We create these errors to compare with real hir::Errors in the tests. |
| // We define equality between TestError and hir::Error to disregard the |
| // pattern string in hir::Error, which is annoying to provide in tests. |
| </span><span class="attribute">#[derive(Clone, Debug)] |
| </span><span class="kw">struct </span>TestError { |
| span: Span, |
| kind: hir::ErrorKind, |
| } |
| |
| <span class="kw">impl </span>PartialEq<hir::Error> <span class="kw">for </span>TestError { |
| <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>hir::Error) -> bool { |
| <span class="self">self</span>.span == other.span && <span class="self">self</span>.kind == other.kind |
| } |
| } |
| |
| <span class="kw">impl </span>PartialEq<TestError> <span class="kw">for </span>hir::Error { |
| <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>TestError) -> bool { |
| <span class="self">self</span>.span == other.span && <span class="self">self</span>.kind == other.kind |
| } |
| } |
| |
| <span class="kw">fn </span>parse(pattern: <span class="kw-2">&</span>str) -> Ast { |
| ParserBuilder::new().octal(<span class="bool-val">true</span>).build().parse(pattern).unwrap() |
| } |
| |
| <span class="kw">fn </span>t(pattern: <span class="kw-2">&</span>str) -> Hir { |
| TranslatorBuilder::new() |
| .utf8(<span class="bool-val">true</span>) |
| .build() |
| .translate(pattern, <span class="kw-2">&</span>parse(pattern)) |
| .unwrap() |
| } |
| |
| <span class="kw">fn </span>t_err(pattern: <span class="kw-2">&</span>str) -> hir::Error { |
| TranslatorBuilder::new() |
| .utf8(<span class="bool-val">true</span>) |
| .build() |
| .translate(pattern, <span class="kw-2">&</span>parse(pattern)) |
| .unwrap_err() |
| } |
| |
| <span class="kw">fn </span>t_bytes(pattern: <span class="kw-2">&</span>str) -> Hir { |
| TranslatorBuilder::new() |
| .utf8(<span class="bool-val">false</span>) |
| .build() |
| .translate(pattern, <span class="kw-2">&</span>parse(pattern)) |
| .unwrap() |
| } |
| |
| <span class="kw">fn </span>props(pattern: <span class="kw-2">&</span>str) -> Properties { |
| t(pattern).properties().clone() |
| } |
| |
| <span class="kw">fn </span>props_bytes(pattern: <span class="kw-2">&</span>str) -> Properties { |
| t_bytes(pattern).properties().clone() |
| } |
| |
| <span class="kw">fn </span>hir_lit(s: <span class="kw-2">&</span>str) -> Hir { |
| hir_blit(s.as_bytes()) |
| } |
| |
| <span class="kw">fn </span>hir_blit(s: <span class="kw-2">&</span>[u8]) -> Hir { |
| Hir::literal(s) |
| } |
| |
| <span class="kw">fn </span>hir_capture(index: u32, expr: Hir) -> Hir { |
| Hir::capture(hir::Capture { index, name: <span class="prelude-val">None</span>, sub: Box::new(expr) }) |
| } |
| |
| <span class="kw">fn </span>hir_capture_name(index: u32, name: <span class="kw-2">&</span>str, expr: Hir) -> Hir { |
| Hir::capture(hir::Capture { |
| index, |
| name: <span class="prelude-val">Some</span>(name.into()), |
| sub: Box::new(expr), |
| }) |
| } |
| |
| <span class="kw">fn </span>hir_quest(greedy: bool, expr: Hir) -> Hir { |
| Hir::repetition(hir::Repetition { |
| min: <span class="number">0</span>, |
| max: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| greedy, |
| sub: Box::new(expr), |
| }) |
| } |
| |
| <span class="kw">fn </span>hir_star(greedy: bool, expr: Hir) -> Hir { |
| Hir::repetition(hir::Repetition { |
| min: <span class="number">0</span>, |
| max: <span class="prelude-val">None</span>, |
| greedy, |
| sub: Box::new(expr), |
| }) |
| } |
| |
| <span class="kw">fn </span>hir_plus(greedy: bool, expr: Hir) -> Hir { |
| Hir::repetition(hir::Repetition { |
| min: <span class="number">1</span>, |
| max: <span class="prelude-val">None</span>, |
| greedy, |
| sub: Box::new(expr), |
| }) |
| } |
| |
| <span class="kw">fn </span>hir_range(greedy: bool, min: u32, max: <span class="prelude-ty">Option</span><u32>, expr: Hir) -> Hir { |
| Hir::repetition(hir::Repetition { |
| min, |
| max, |
| greedy, |
| sub: Box::new(expr), |
| }) |
| } |
| |
| <span class="kw">fn </span>hir_alt(alts: Vec<Hir>) -> Hir { |
| Hir::alternation(alts) |
| } |
| |
| <span class="kw">fn </span>hir_cat(exprs: Vec<Hir>) -> Hir { |
| Hir::concat(exprs) |
| } |
| |
| <span class="attribute">#[allow(dead_code)] |
| </span><span class="kw">fn </span>hir_uclass_query(query: ClassQuery<<span class="lifetime">'_</span>>) -> Hir { |
| Hir::class(hir::Class::Unicode(unicode::class(query).unwrap())) |
| } |
| |
| <span class="attribute">#[allow(dead_code)] |
| </span><span class="kw">fn </span>hir_uclass_perl_word() -> Hir { |
| Hir::class(hir::Class::Unicode(unicode::perl_word().unwrap())) |
| } |
| |
| <span class="kw">fn </span>hir_ascii_uclass(kind: <span class="kw-2">&</span>ast::ClassAsciiKind) -> Hir { |
| Hir::class(hir::Class::Unicode(hir::ClassUnicode::new( |
| ascii_class_as_chars(kind) |
| .map(|(s, e)| hir::ClassUnicodeRange::new(s, e)), |
| ))) |
| } |
| |
| <span class="kw">fn </span>hir_ascii_bclass(kind: <span class="kw-2">&</span>ast::ClassAsciiKind) -> Hir { |
| Hir::class(hir::Class::Bytes(hir::ClassBytes::new( |
| ascii_class(kind).map(|(s, e)| hir::ClassBytesRange::new(s, e)), |
| ))) |
| } |
| |
| <span class="kw">fn </span>hir_uclass(ranges: <span class="kw-2">&</span>[(char, char)]) -> Hir { |
| Hir::class(uclass(ranges)) |
| } |
| |
| <span class="kw">fn </span>hir_bclass(ranges: <span class="kw-2">&</span>[(u8, u8)]) -> Hir { |
| Hir::class(bclass(ranges)) |
| } |
| |
| <span class="kw">fn </span>hir_case_fold(expr: Hir) -> Hir { |
| <span class="kw">match </span>expr.into_kind() { |
| HirKind::Class(<span class="kw-2">mut </span>cls) => { |
| cls.case_fold_simple(); |
| Hir::class(cls) |
| } |
| <span class="kw">_ </span>=> <span class="macro">panic!</span>(<span class="string">"cannot case fold non-class Hir expr"</span>), |
| } |
| } |
| |
| <span class="kw">fn </span>hir_negate(expr: Hir) -> Hir { |
| <span class="kw">match </span>expr.into_kind() { |
| HirKind::Class(<span class="kw-2">mut </span>cls) => { |
| cls.negate(); |
| Hir::class(cls) |
| } |
| <span class="kw">_ </span>=> <span class="macro">panic!</span>(<span class="string">"cannot negate non-class Hir expr"</span>), |
| } |
| } |
| |
| <span class="kw">fn </span>uclass(ranges: <span class="kw-2">&</span>[(char, char)]) -> hir::Class { |
| <span class="kw">let </span>ranges: Vec<hir::ClassUnicodeRange> = ranges |
| .iter() |
| .map(|<span class="kw-2">&</span>(s, e)| hir::ClassUnicodeRange::new(s, e)) |
| .collect(); |
| hir::Class::Unicode(hir::ClassUnicode::new(ranges)) |
| } |
| |
| <span class="kw">fn </span>bclass(ranges: <span class="kw-2">&</span>[(u8, u8)]) -> hir::Class { |
| <span class="kw">let </span>ranges: Vec<hir::ClassBytesRange> = ranges |
| .iter() |
| .map(|<span class="kw-2">&</span>(s, e)| hir::ClassBytesRange::new(s, e)) |
| .collect(); |
| hir::Class::Bytes(hir::ClassBytes::new(ranges)) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="kw">fn </span>class_case_fold(<span class="kw-2">mut </span>cls: hir::Class) -> Hir { |
| cls.case_fold_simple(); |
| Hir::class(cls) |
| } |
| |
| <span class="kw">fn </span>class_negate(<span class="kw-2">mut </span>cls: hir::Class) -> Hir { |
| cls.negate(); |
| Hir::class(cls) |
| } |
| |
| <span class="attribute">#[allow(dead_code)] |
| </span><span class="kw">fn </span>hir_union(expr1: Hir, expr2: Hir) -> Hir { |
| <span class="kw">use </span><span class="kw">crate</span>::hir::Class::{Bytes, Unicode}; |
| |
| <span class="kw">match </span>(expr1.into_kind(), expr2.into_kind()) { |
| (HirKind::Class(Unicode(<span class="kw-2">mut </span>c1)), HirKind::Class(Unicode(c2))) => { |
| c1.union(<span class="kw-2">&</span>c2); |
| Hir::class(hir::Class::Unicode(c1)) |
| } |
| (HirKind::Class(Bytes(<span class="kw-2">mut </span>c1)), HirKind::Class(Bytes(c2))) => { |
| c1.union(<span class="kw-2">&</span>c2); |
| Hir::class(hir::Class::Bytes(c1)) |
| } |
| <span class="kw">_ </span>=> <span class="macro">panic!</span>(<span class="string">"cannot union non-class Hir exprs"</span>), |
| } |
| } |
| |
| <span class="attribute">#[allow(dead_code)] |
| </span><span class="kw">fn </span>hir_difference(expr1: Hir, expr2: Hir) -> Hir { |
| <span class="kw">use </span><span class="kw">crate</span>::hir::Class::{Bytes, Unicode}; |
| |
| <span class="kw">match </span>(expr1.into_kind(), expr2.into_kind()) { |
| (HirKind::Class(Unicode(<span class="kw-2">mut </span>c1)), HirKind::Class(Unicode(c2))) => { |
| c1.difference(<span class="kw-2">&</span>c2); |
| Hir::class(hir::Class::Unicode(c1)) |
| } |
| (HirKind::Class(Bytes(<span class="kw-2">mut </span>c1)), HirKind::Class(Bytes(c2))) => { |
| c1.difference(<span class="kw-2">&</span>c2); |
| Hir::class(hir::Class::Bytes(c1)) |
| } |
| <span class="kw">_ </span>=> <span class="macro">panic!</span>(<span class="string">"cannot difference non-class Hir exprs"</span>), |
| } |
| } |
| |
| <span class="kw">fn </span>hir_look(look: hir::Look) -> Hir { |
| Hir::look(look) |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>empty() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">""</span>), Hir::empty()); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?i)"</span>), Hir::empty()); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"()"</span>), hir_capture(<span class="number">1</span>, Hir::empty())); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?:)"</span>), Hir::empty()); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?P<wat>)"</span>), hir_capture_name(<span class="number">1</span>, <span class="string">"wat"</span>, Hir::empty())); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"|"</span>), hir_alt(<span class="macro">vec!</span>[Hir::empty(), Hir::empty()])); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"()|()"</span>), |
| hir_alt(<span class="macro">vec!</span>[ |
| hir_capture(<span class="number">1</span>, Hir::empty()), |
| hir_capture(<span class="number">2</span>, Hir::empty()), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(|b)"</span>), |
| hir_capture(<span class="number">1</span>, hir_alt(<span class="macro">vec!</span>[Hir::empty(), hir_lit(<span class="string">"b"</span>),])) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(a|)"</span>), |
| hir_capture(<span class="number">1</span>, hir_alt(<span class="macro">vec!</span>[hir_lit(<span class="string">"a"</span>), Hir::empty(),])) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(a||c)"</span>), |
| hir_capture( |
| <span class="number">1</span>, |
| hir_alt(<span class="macro">vec!</span>[hir_lit(<span class="string">"a"</span>), Hir::empty(), hir_lit(<span class="string">"c"</span>),]) |
| ) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(||)"</span>), |
| hir_capture( |
| <span class="number">1</span>, |
| hir_alt(<span class="macro">vec!</span>[Hir::empty(), Hir::empty(), Hir::empty(),]) |
| ) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>literal() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a"</span>), hir_lit(<span class="string">"a"</span>)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?-u)a"</span>), hir_lit(<span class="string">"a"</span>)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"☃"</span>), hir_lit(<span class="string">"☃"</span>)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"abcd"</span>), hir_lit(<span class="string">"abcd"</span>)); |
| |
| <span class="macro">assert_eq!</span>(t_bytes(<span class="string">"(?-u)a"</span>), hir_lit(<span class="string">"a"</span>)); |
| <span class="macro">assert_eq!</span>(t_bytes(<span class="string">"(?-u)\x61"</span>), hir_lit(<span class="string">"a"</span>)); |
| <span class="macro">assert_eq!</span>(t_bytes(<span class="string">r"(?-u)\x61"</span>), hir_lit(<span class="string">"a"</span>)); |
| <span class="macro">assert_eq!</span>(t_bytes(<span class="string">r"(?-u)\xFF"</span>), hir_blit(<span class="string">b"\xFF"</span>)); |
| |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">"(?-u)☃"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodeNotAllowed, |
| span: Span::new( |
| Position::new(<span class="number">5</span>, <span class="number">1</span>, <span class="number">6</span>), |
| Position::new(<span class="number">8</span>, <span class="number">1</span>, <span class="number">7</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"(?-u)\xFF"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">5</span>, <span class="number">1</span>, <span class="number">6</span>), |
| Position::new(<span class="number">9</span>, <span class="number">1</span>, <span class="number">10</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>literal_case_insensitive() { |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">"(?i)a"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>),])); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">"(?i:a)"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)])); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"a(?i)a(?-i)a"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_lit(<span class="string">"a"</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]), |
| hir_lit(<span class="string">"a"</span>), |
| ]) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)ab@c"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'B'</span>, <span class="string">'B'</span>), (<span class="string">'b'</span>, <span class="string">'b'</span>)]), |
| hir_lit(<span class="string">"@"</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'C'</span>, <span class="string">'C'</span>), (<span class="string">'c'</span>, <span class="string">'c'</span>)]), |
| ]) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)β"</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'Β'</span>, <span class="string">'Β'</span>), (<span class="string">'β'</span>, <span class="string">'β'</span>), (<span class="string">'ϐ'</span>, <span class="string">'ϐ'</span>),]) |
| ); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?i-u)a"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'A'</span>), (<span class="string">b'a'</span>, <span class="string">b'a'</span>),])); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?-u)a(?i)a(?-i)a"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_lit(<span class="string">"a"</span>), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'A'</span>), (<span class="string">b'a'</span>, <span class="string">b'a'</span>)]), |
| hir_lit(<span class="string">"a"</span>), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i-u)ab@c"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'A'</span>), (<span class="string">b'a'</span>, <span class="string">b'a'</span>)]), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'B'</span>, <span class="string">b'B'</span>), (<span class="string">b'b'</span>, <span class="string">b'b'</span>)]), |
| hir_lit(<span class="string">"@"</span>), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'C'</span>, <span class="string">b'C'</span>), (<span class="string">b'c'</span>, <span class="string">b'c'</span>)]), |
| ]) |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">"(?i-u)a"</span>), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'A'</span>), (<span class="string">b'a'</span>, <span class="string">b'a'</span>),]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">"(?i-u)\x61"</span>), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'A'</span>), (<span class="string">b'a'</span>, <span class="string">b'a'</span>),]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?i-u)\x61"</span>), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'A'</span>), (<span class="string">b'a'</span>, <span class="string">b'a'</span>),]) |
| ); |
| <span class="macro">assert_eq!</span>(t_bytes(<span class="string">r"(?i-u)\xFF"</span>), hir_blit(<span class="string">b"\xFF"</span>)); |
| |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">"(?i-u)β"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodeNotAllowed, |
| span: Span::new( |
| Position::new(<span class="number">6</span>, <span class="number">1</span>, <span class="number">7</span>), |
| Position::new(<span class="number">8</span>, <span class="number">1</span>, <span class="number">8</span>), |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>dot() { |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"."</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\0'</span>, <span class="string">'\t'</span>), (<span class="string">'\x0B'</span>, <span class="string">'\u{10FFFF}'</span>)]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?R)."</span>), |
| hir_uclass(<span class="kw-2">&</span>[ |
| (<span class="string">'\0'</span>, <span class="string">'\t'</span>), |
| (<span class="string">'\x0B'</span>, <span class="string">'\x0C'</span>), |
| (<span class="string">'\x0E'</span>, <span class="string">'\u{10FFFF}'</span>), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?s)."</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\0'</span>, <span class="string">'\u{10FFFF}'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?Rs)."</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\0'</span>, <span class="string">'\u{10FFFF}'</span>)])); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">"(?-u)."</span>), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'\0'</span>, <span class="string">b'\t'</span>), (<span class="string">b'\x0B'</span>, <span class="string">b'\xFF'</span>)]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">"(?R-u)."</span>), |
| hir_bclass(<span class="kw-2">&</span>[ |
| (<span class="string">b'\0'</span>, <span class="string">b'\t'</span>), |
| (<span class="string">b'\x0B'</span>, <span class="string">b'\x0C'</span>), |
| (<span class="string">b'\x0E'</span>, <span class="string">b'\xFF'</span>), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>(t_bytes(<span class="string">"(?s-u)."</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'\0'</span>, <span class="string">b'\xFF'</span>),])); |
| <span class="macro">assert_eq!</span>(t_bytes(<span class="string">"(?Rs-u)."</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'\0'</span>, <span class="string">b'\xFF'</span>),])); |
| |
| <span class="comment">// If invalid UTF-8 isn't allowed, then non-Unicode `.` isn't allowed. |
| </span><span class="macro">assert_eq!</span>( |
| t_err(<span class="string">"(?-u)."</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">5</span>, <span class="number">1</span>, <span class="number">6</span>), |
| Position::new(<span class="number">6</span>, <span class="number">1</span>, <span class="number">7</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">"(?R-u)."</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">6</span>, <span class="number">1</span>, <span class="number">7</span>), |
| Position::new(<span class="number">7</span>, <span class="number">1</span>, <span class="number">8</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">"(?s-u)."</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">6</span>, <span class="number">1</span>, <span class="number">7</span>), |
| Position::new(<span class="number">7</span>, <span class="number">1</span>, <span class="number">8</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">"(?Rs-u)."</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">7</span>, <span class="number">1</span>, <span class="number">8</span>), |
| Position::new(<span class="number">8</span>, <span class="number">1</span>, <span class="number">9</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>assertions() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">"^"</span>), hir_look(hir::Look::Start)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"$"</span>), hir_look(hir::Look::End)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\A"</span>), hir_look(hir::Look::Start)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\z"</span>), hir_look(hir::Look::End)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?m)^"</span>), hir_look(hir::Look::StartLF)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?m)$"</span>), hir_look(hir::Look::EndLF)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?m)\A"</span>), hir_look(hir::Look::Start)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?m)\z"</span>), hir_look(hir::Look::End)); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\b"</span>), hir_look(hir::Look::WordUnicode)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\B"</span>), hir_look(hir::Look::WordUnicodeNegate)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?-u)\b"</span>), hir_look(hir::Look::WordAscii)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?-u)\B"</span>), hir_look(hir::Look::WordAsciiNegate)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>group() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(a)"</span>), hir_capture(<span class="number">1</span>, hir_lit(<span class="string">"a"</span>))); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(a)(b)"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_capture(<span class="number">1</span>, hir_lit(<span class="string">"a"</span>)), |
| hir_capture(<span class="number">2</span>, hir_lit(<span class="string">"b"</span>)), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(a)|(b)"</span>), |
| hir_alt(<span class="macro">vec!</span>[ |
| hir_capture(<span class="number">1</span>, hir_lit(<span class="string">"a"</span>)), |
| hir_capture(<span class="number">2</span>, hir_lit(<span class="string">"b"</span>)), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?P<foo>)"</span>), hir_capture_name(<span class="number">1</span>, <span class="string">"foo"</span>, Hir::empty())); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?P<foo>a)"</span>), hir_capture_name(<span class="number">1</span>, <span class="string">"foo"</span>, hir_lit(<span class="string">"a"</span>))); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?P<foo>a)(?P<bar>b)"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_capture_name(<span class="number">1</span>, <span class="string">"foo"</span>, hir_lit(<span class="string">"a"</span>)), |
| hir_capture_name(<span class="number">2</span>, <span class="string">"bar"</span>, hir_lit(<span class="string">"b"</span>)), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?:)"</span>), Hir::empty()); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?:a)"</span>), hir_lit(<span class="string">"a"</span>)); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?:a)(b)"</span>), |
| hir_cat(<span class="macro">vec!</span>[hir_lit(<span class="string">"a"</span>), hir_capture(<span class="number">1</span>, hir_lit(<span class="string">"b"</span>)),]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(a)(?:b)(c)"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_capture(<span class="number">1</span>, hir_lit(<span class="string">"a"</span>)), |
| hir_lit(<span class="string">"b"</span>), |
| hir_capture(<span class="number">2</span>, hir_lit(<span class="string">"c"</span>)), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(a)(?P<foo>b)(c)"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_capture(<span class="number">1</span>, hir_lit(<span class="string">"a"</span>)), |
| hir_capture_name(<span class="number">2</span>, <span class="string">"foo"</span>, hir_lit(<span class="string">"b"</span>)), |
| hir_capture(<span class="number">3</span>, hir_lit(<span class="string">"c"</span>)), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"()"</span>), hir_capture(<span class="number">1</span>, Hir::empty())); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"((?i))"</span>), hir_capture(<span class="number">1</span>, Hir::empty())); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"((?x))"</span>), hir_capture(<span class="number">1</span>, Hir::empty())); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(((?x)))"</span>), |
| hir_capture(<span class="number">1</span>, hir_capture(<span class="number">2</span>, Hir::empty())) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>line_anchors() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">"^"</span>), hir_look(hir::Look::Start)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"$"</span>), hir_look(hir::Look::End)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\A"</span>), hir_look(hir::Look::Start)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\z"</span>), hir_look(hir::Look::End)); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?m)\A"</span>), hir_look(hir::Look::Start)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?m)\z"</span>), hir_look(hir::Look::End)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?m)^"</span>), hir_look(hir::Look::StartLF)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?m)$"</span>), hir_look(hir::Look::EndLF)); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?R)\A"</span>), hir_look(hir::Look::Start)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?R)\z"</span>), hir_look(hir::Look::End)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?R)^"</span>), hir_look(hir::Look::Start)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?R)$"</span>), hir_look(hir::Look::End)); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?Rm)\A"</span>), hir_look(hir::Look::Start)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?Rm)\z"</span>), hir_look(hir::Look::End)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?Rm)^"</span>), hir_look(hir::Look::StartCRLF)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?Rm)$"</span>), hir_look(hir::Look::EndCRLF)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>flags() { |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i:a)a"</span>), |
| hir_cat( |
| <span class="macro">vec!</span>[hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]), hir_lit(<span class="string">"a"</span>),] |
| ) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i-u:a)β"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'A'</span>), (<span class="string">b'a'</span>, <span class="string">b'a'</span>)]), |
| hir_lit(<span class="string">"β"</span>), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?:(?i-u)a)b"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'A'</span>), (<span class="string">b'a'</span>, <span class="string">b'a'</span>)]), |
| hir_lit(<span class="string">"b"</span>), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"((?i-u)a)b"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_capture(<span class="number">1</span>, hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'A'</span>), (<span class="string">b'a'</span>, <span class="string">b'a'</span>)])), |
| hir_lit(<span class="string">"b"</span>), |
| ]) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)(?-i:a)a"</span>), |
| hir_cat( |
| <span class="macro">vec!</span>[hir_lit(<span class="string">"a"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]),] |
| ) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?im)a^"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]), |
| hir_look(hir::Look::StartLF), |
| ]) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?im)a^(?i-m)a^"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]), |
| hir_look(hir::Look::StartLF), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]), |
| hir_look(hir::Look::Start), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?U)a*a*?(?-U)a*a*?"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_star(<span class="bool-val">false</span>, hir_lit(<span class="string">"a"</span>)), |
| hir_star(<span class="bool-val">true</span>, hir_lit(<span class="string">"a"</span>)), |
| hir_star(<span class="bool-val">true</span>, hir_lit(<span class="string">"a"</span>)), |
| hir_star(<span class="bool-val">false</span>, hir_lit(<span class="string">"a"</span>)), |
| ]) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?:a(?i)a)a"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_lit(<span class="string">"a"</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]), |
| ]), |
| hir_lit(<span class="string">"a"</span>), |
| ]) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)(?:a(?-i)a)a"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]), |
| hir_lit(<span class="string">"a"</span>), |
| ]), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)]), |
| ]) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>escape() { |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\\\.\+\*\?\(\)\|\[\]\{\}\^\$\#"</span>), |
| hir_lit(<span class="string">r"\.+*?()|[]{}^$#"</span>) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>repetition() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a?"</span>), hir_quest(<span class="bool-val">true</span>, hir_lit(<span class="string">"a"</span>))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a*"</span>), hir_star(<span class="bool-val">true</span>, hir_lit(<span class="string">"a"</span>))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a+"</span>), hir_plus(<span class="bool-val">true</span>, hir_lit(<span class="string">"a"</span>))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a??"</span>), hir_quest(<span class="bool-val">false</span>, hir_lit(<span class="string">"a"</span>))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a*?"</span>), hir_star(<span class="bool-val">false</span>, hir_lit(<span class="string">"a"</span>))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a+?"</span>), hir_plus(<span class="bool-val">false</span>, hir_lit(<span class="string">"a"</span>))); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a{1}"</span>), hir_range(<span class="bool-val">true</span>, <span class="number">1</span>, <span class="prelude-val">Some</span>(<span class="number">1</span>), hir_lit(<span class="string">"a"</span>),)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a{1,}"</span>), hir_range(<span class="bool-val">true</span>, <span class="number">1</span>, <span class="prelude-val">None</span>, hir_lit(<span class="string">"a"</span>),)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a{1,2}"</span>), hir_range(<span class="bool-val">true</span>, <span class="number">1</span>, <span class="prelude-val">Some</span>(<span class="number">2</span>), hir_lit(<span class="string">"a"</span>),)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a{1}?"</span>), hir_range(<span class="bool-val">false</span>, <span class="number">1</span>, <span class="prelude-val">Some</span>(<span class="number">1</span>), hir_lit(<span class="string">"a"</span>),)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a{1,}?"</span>), hir_range(<span class="bool-val">false</span>, <span class="number">1</span>, <span class="prelude-val">None</span>, hir_lit(<span class="string">"a"</span>),)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"a{1,2}?"</span>), hir_range(<span class="bool-val">false</span>, <span class="number">1</span>, <span class="prelude-val">Some</span>(<span class="number">2</span>), hir_lit(<span class="string">"a"</span>),)); |
| |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"ab?"</span>), |
| hir_cat(<span class="macro">vec!</span>[hir_lit(<span class="string">"a"</span>), hir_quest(<span class="bool-val">true</span>, hir_lit(<span class="string">"b"</span>)),]) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(ab)?"</span>), hir_quest(<span class="bool-val">true</span>, hir_capture(<span class="number">1</span>, hir_lit(<span class="string">"ab"</span>)))); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"a|b?"</span>), |
| hir_alt(<span class="macro">vec!</span>[hir_lit(<span class="string">"a"</span>), hir_quest(<span class="bool-val">true</span>, hir_lit(<span class="string">"b"</span>)),]) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>cat_alt() { |
| <span class="kw">let </span>a = || hir_look(hir::Look::Start); |
| <span class="kw">let </span>b = || hir_look(hir::Look::End); |
| <span class="kw">let </span>c = || hir_look(hir::Look::WordUnicode); |
| <span class="kw">let </span>d = || hir_look(hir::Look::WordUnicodeNegate); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(^$)"</span>), hir_capture(<span class="number">1</span>, hir_cat(<span class="macro">vec!</span>[a(), b()]))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"^|$"</span>), hir_alt(<span class="macro">vec!</span>[a(), b()])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"^|$|\b"</span>), hir_alt(<span class="macro">vec!</span>[a(), b(), c()])); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"^$|$\b|\b\B"</span>), |
| hir_alt(<span class="macro">vec!</span>[ |
| hir_cat(<span class="macro">vec!</span>[a(), b()]), |
| hir_cat(<span class="macro">vec!</span>[b(), c()]), |
| hir_cat(<span class="macro">vec!</span>[c(), d()]), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(^|$)"</span>), hir_capture(<span class="number">1</span>, hir_alt(<span class="macro">vec!</span>[a(), b()]))); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(^|$|\b)"</span>), |
| hir_capture(<span class="number">1</span>, hir_alt(<span class="macro">vec!</span>[a(), b(), c()])) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(^$|$\b|\b\B)"</span>), |
| hir_capture( |
| <span class="number">1</span>, |
| hir_alt(<span class="macro">vec!</span>[ |
| hir_cat(<span class="macro">vec!</span>[a(), b()]), |
| hir_cat(<span class="macro">vec!</span>[b(), c()]), |
| hir_cat(<span class="macro">vec!</span>[c(), d()]), |
| ]) |
| ) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(^$|($\b|(\b\B)))"</span>), |
| hir_capture( |
| <span class="number">1</span>, |
| hir_alt(<span class="macro">vec!</span>[ |
| hir_cat(<span class="macro">vec!</span>[a(), b()]), |
| hir_capture( |
| <span class="number">2</span>, |
| hir_alt(<span class="macro">vec!</span>[ |
| hir_cat(<span class="macro">vec!</span>[b(), c()]), |
| hir_capture(<span class="number">3</span>, hir_cat(<span class="macro">vec!</span>[c(), d()])), |
| ]) |
| ), |
| ]) |
| ) |
| ); |
| } |
| |
| <span class="comment">// Tests the HIR transformation of things like '[a-z]|[A-Z]' into |
| // '[A-Za-z]'. In other words, an alternation of just classes is always |
| // equivalent to a single class corresponding to the union of the branches |
| // in that class. (Unless some branches match invalid UTF-8 and others |
| // match non-ASCII Unicode.) |
| </span><span class="attribute">#[test] |
| </span><span class="kw">fn </span>cat_class_flattened() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[a-z]|[A-Z]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>), (<span class="string">'a'</span>, <span class="string">'z'</span>)])); |
| <span class="comment">// Combining all of the letter properties should give us the one giant |
| // letter property. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?x) |
| \p{Lowercase_Letter} |
| |\p{Uppercase_Letter} |
| |\p{Titlecase_Letter} |
| |\p{Modifier_Letter} |
| |\p{Other_Letter} |
| "</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"letter"</span>)) |
| ); |
| <span class="comment">// Byte classes that can truly match invalid UTF-8 cannot be combined |
| // with Unicode classes. |
| </span><span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"[Δδ]|(?-u:[\x90-\xFF])|[Λλ]"</span>), |
| hir_alt(<span class="macro">vec!</span>[ |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'Δ'</span>, <span class="string">'Δ'</span>), (<span class="string">'δ'</span>, <span class="string">'δ'</span>)]), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'\x90'</span>, <span class="string">b'\xFF'</span>)]), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'Λ'</span>, <span class="string">'Λ'</span>), (<span class="string">'λ'</span>, <span class="string">'λ'</span>)]), |
| ]) |
| ); |
| <span class="comment">// Byte classes on their own can be combined, even if some are ASCII |
| // and others are invalid UTF-8. |
| </span><span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"[a-z]|(?-u:[\x90-\xFF])|[A-Z]"</span>), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'Z'</span>), (<span class="string">b'a'</span>, <span class="string">b'z'</span>), (<span class="string">b'\x90'</span>, <span class="string">b'\xFF'</span>)]), |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_ascii() { |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:alnum:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Alnum) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:alpha:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Alpha) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:ascii:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Ascii) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:blank:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Blank) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:cntrl:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Cntrl) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:digit:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Digit) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:graph:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Graph) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:lower:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Lower) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:print:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Print) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:punct:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Punct) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:space:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Space) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:upper:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Upper) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:word:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Word) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:xdigit:]]"</span>), |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Xdigit) |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:^lower:]]"</span>), |
| hir_negate(hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Lower)) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)[[:lower:]]"</span>), |
| hir_uclass(<span class="kw-2">&</span>[ |
| (<span class="string">'A'</span>, <span class="string">'Z'</span>), |
| (<span class="string">'a'</span>, <span class="string">'z'</span>), |
| (<span class="string">'\u{17F}'</span>, <span class="string">'\u{17F}'</span>), |
| (<span class="string">'\u{212A}'</span>, <span class="string">'\u{212A}'</span>), |
| ]) |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?-u)[[:lower:]]"</span>), |
| hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Lower) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i-u)[[:lower:]]"</span>), |
| hir_case_fold(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Lower)) |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">"(?-u)[[:^lower:]]"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">6</span>, <span class="number">1</span>, <span class="number">7</span>), |
| Position::new(<span class="number">16</span>, <span class="number">1</span>, <span class="number">17</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">"(?i-u)[[:^lower:]]"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">7</span>, <span class="number">1</span>, <span class="number">8</span>), |
| Position::new(<span class="number">17</span>, <span class="number">1</span>, <span class="number">18</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_ascii_multiple() { |
| <span class="comment">// See: https://github.com/rust-lang/regex/issues/680 |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"[[:alnum:][:^ascii:]]"</span>), |
| hir_union( |
| hir_ascii_uclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Alnum), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\u{80}'</span>, <span class="string">'\u{10FFFF}'</span>)]), |
| ), |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">"(?-u)[[:alnum:][:^ascii:]]"</span>), |
| hir_union( |
| hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Alnum), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="number">0x80</span>, <span class="number">0xFF</span>)]), |
| ), |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(feature = <span class="string">"unicode-perl"</span>)] |
| </span><span class="kw">fn </span>class_perl_unicode() { |
| <span class="comment">// Unicode |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"\d"</span>), hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\s"</span>), hir_uclass_query(ClassQuery::Binary(<span class="string">"space"</span>))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\w"</span>), hir_uclass_perl_word()); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)\d"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>)) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)\s"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"space"</span>)) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"(?i)\w"</span>), hir_uclass_perl_word()); |
| |
| <span class="comment">// Unicode, negated |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\D"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>))) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\S"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"space"</span>))) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\W"</span>), hir_negate(hir_uclass_perl_word())); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)\D"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>))) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)\S"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"space"</span>))) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"(?i)\W"</span>), hir_negate(hir_uclass_perl_word())); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_perl_ascii() { |
| <span class="comment">// ASCII only |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?-u)\d"</span>), |
| hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Digit) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?-u)\s"</span>), |
| hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Space) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?-u)\w"</span>), |
| hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Word) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i-u)\d"</span>), |
| hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Digit) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i-u)\s"</span>), |
| hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Space) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i-u)\w"</span>), |
| hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Word) |
| ); |
| |
| <span class="comment">// ASCII only, negated |
| </span><span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?-u)\D"</span>), |
| hir_negate(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Digit)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?-u)\S"</span>), |
| hir_negate(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Space)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?-u)\W"</span>), |
| hir_negate(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Word)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?i-u)\D"</span>), |
| hir_negate(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Digit)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?i-u)\S"</span>), |
| hir_negate(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Space)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?i-u)\W"</span>), |
| hir_negate(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Word)) |
| ); |
| |
| <span class="comment">// ASCII only, negated, with UTF-8 mode enabled. |
| // In this case, negating any Perl class results in an error because |
| // all such classes can match invalid UTF-8. |
| </span><span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"(?-u)\D"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">5</span>, <span class="number">1</span>, <span class="number">6</span>), |
| Position::new(<span class="number">7</span>, <span class="number">1</span>, <span class="number">8</span>), |
| ), |
| }, |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"(?-u)\S"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">5</span>, <span class="number">1</span>, <span class="number">6</span>), |
| Position::new(<span class="number">7</span>, <span class="number">1</span>, <span class="number">8</span>), |
| ), |
| }, |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"(?-u)\W"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">5</span>, <span class="number">1</span>, <span class="number">6</span>), |
| Position::new(<span class="number">7</span>, <span class="number">1</span>, <span class="number">8</span>), |
| ), |
| }, |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"(?i-u)\D"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">6</span>, <span class="number">1</span>, <span class="number">7</span>), |
| Position::new(<span class="number">8</span>, <span class="number">1</span>, <span class="number">9</span>), |
| ), |
| }, |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"(?i-u)\S"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">6</span>, <span class="number">1</span>, <span class="number">7</span>), |
| Position::new(<span class="number">8</span>, <span class="number">1</span>, <span class="number">9</span>), |
| ), |
| }, |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"(?i-u)\W"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">6</span>, <span class="number">1</span>, <span class="number">7</span>), |
| Position::new(<span class="number">8</span>, <span class="number">1</span>, <span class="number">9</span>), |
| ), |
| }, |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(not(feature = <span class="string">"unicode-perl"</span>))] |
| </span><span class="kw">fn </span>class_perl_word_disabled() { |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\w"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePerlClassNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">2</span>, <span class="number">1</span>, <span class="number">3</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(all(not(feature = <span class="string">"unicode-perl"</span>), not(feature = <span class="string">"unicode-bool"</span>)))] |
| </span><span class="kw">fn </span>class_perl_space_disabled() { |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\s"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePerlClassNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">2</span>, <span class="number">1</span>, <span class="number">3</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(all( |
| not(feature = <span class="string">"unicode-perl"</span>), |
| not(feature = <span class="string">"unicode-gencat"</span>) |
| ))] |
| </span><span class="kw">fn </span>class_perl_digit_disabled() { |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\d"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePerlClassNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">2</span>, <span class="number">1</span>, <span class="number">3</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="kw">fn </span>class_unicode_gencat() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\pZ"</span>), hir_uclass_query(ClassQuery::Binary(<span class="string">"Z"</span>))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\pz"</span>), hir_uclass_query(ClassQuery::Binary(<span class="string">"Z"</span>))); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{Separator}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"Z"</span>)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{se PaRa ToR}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"Z"</span>)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{gc:Separator}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"Z"</span>)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{gc=Separator}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"Z"</span>)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{Other}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"Other"</span>)) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\pC"</span>), hir_uclass_query(ClassQuery::Binary(<span class="string">"Other"</span>))); |
| |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\PZ"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"Z"</span>))) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\P{separator}"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"Z"</span>))) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\P{gc!=separator}"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"Z"</span>))) |
| ); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\p{any}"</span>), hir_uclass_query(ClassQuery::Binary(<span class="string">"Any"</span>))); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{assigned}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"Assigned"</span>)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{ascii}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"ASCII"</span>)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{gc:any}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"Any"</span>)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{gc:assigned}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"Assigned"</span>)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{gc:ascii}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"ASCII"</span>)) |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"(?-u)\pZ"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodeNotAllowed, |
| span: Span::new( |
| Position::new(<span class="number">5</span>, <span class="number">1</span>, <span class="number">6</span>), |
| Position::new(<span class="number">8</span>, <span class="number">1</span>, <span class="number">9</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"(?-u)\p{Separator}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodeNotAllowed, |
| span: Span::new( |
| Position::new(<span class="number">5</span>, <span class="number">1</span>, <span class="number">6</span>), |
| Position::new(<span class="number">18</span>, <span class="number">1</span>, <span class="number">19</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\pE"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">3</span>, <span class="number">1</span>, <span class="number">4</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{Foo}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">7</span>, <span class="number">1</span>, <span class="number">8</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{gc:Foo}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyValueNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">10</span>, <span class="number">1</span>, <span class="number">11</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(not(feature = <span class="string">"unicode-gencat"</span>))] |
| </span><span class="kw">fn </span>class_unicode_gencat_disabled() { |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{Separator}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">13</span>, <span class="number">1</span>, <span class="number">14</span>) |
| ), |
| } |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{Any}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">7</span>, <span class="number">1</span>, <span class="number">8</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(feature = <span class="string">"unicode-script"</span>)] |
| </span><span class="kw">fn </span>class_unicode_script() { |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"\p{Greek}"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"Greek"</span>)) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)\p{Greek}"</span>), |
| hir_case_fold(hir_uclass_query(ClassQuery::Binary(<span class="string">"Greek"</span>))) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)\P{Greek}"</span>), |
| hir_negate(hir_case_fold(hir_uclass_query(ClassQuery::Binary( |
| <span class="string">"Greek" |
| </span>)))) |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{sc:Foo}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyValueNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">10</span>, <span class="number">1</span>, <span class="number">11</span>) |
| ), |
| } |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{scx:Foo}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyValueNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">11</span>, <span class="number">1</span>, <span class="number">12</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(not(feature = <span class="string">"unicode-script"</span>))] |
| </span><span class="kw">fn </span>class_unicode_script_disabled() { |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{Greek}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">9</span>, <span class="number">1</span>, <span class="number">10</span>) |
| ), |
| } |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{scx:Greek}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">13</span>, <span class="number">1</span>, <span class="number">14</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(feature = <span class="string">"unicode-age"</span>)] |
| </span><span class="kw">fn </span>class_unicode_age() { |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{age:Foo}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyValueNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">11</span>, <span class="number">1</span>, <span class="number">12</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="kw">fn </span>class_unicode_any_empty() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"\P{any}"</span>), hir_uclass(<span class="kw-2">&</span>[]),); |
| } |
| |
| <span class="attribute">#[test] |
| #[cfg(not(feature = <span class="string">"unicode-age"</span>))] |
| </span><span class="kw">fn </span>class_unicode_age_disabled() { |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">r"\p{age:3.0}"</span>), |
| TestError { |
| kind: hir::ErrorKind::UnicodePropertyNotFound, |
| span: Span::new( |
| Position::new(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Position::new(<span class="number">11</span>, <span class="number">1</span>, <span class="number">12</span>) |
| ), |
| } |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_bracketed() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[a]"</span>), hir_lit(<span class="string">"a"</span>)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[ab]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'b'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[^[a]]"</span>), class_negate(uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'a'</span>)]))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[a-z]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'z'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[a-fd-h]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'h'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[a-fg-m]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'m'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\x00]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\0'</span>, <span class="string">'\0'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\n]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\n'</span>, <span class="string">'\n'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[\n]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\n'</span>, <span class="string">'\n'</span>)])); |
| <span class="attribute">#[cfg(any(feature = <span class="string">"unicode-perl"</span>, feature = <span class="string">"unicode-gencat"</span>))] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"[\d]"</span>), hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>))); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[\pZ]"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[\p{separator}]"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ); |
| <span class="attribute">#[cfg(any(feature = <span class="string">"unicode-perl"</span>, feature = <span class="string">"unicode-gencat"</span>))] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"[^\D]"</span>), hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>))); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[^\PZ]"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[^\P{separator}]"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ); |
| <span class="attribute">#[cfg(all( |
| feature = <span class="string">"unicode-case"</span>, |
| any(feature = <span class="string">"unicode-perl"</span>, feature = <span class="string">"unicode-gencat"</span>) |
| ))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)[^\D]"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>)) |
| ); |
| <span class="attribute">#[cfg(all(feature = <span class="string">"unicode-case"</span>, feature = <span class="string">"unicode-script"</span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)[^\P{greek}]"</span>), |
| hir_case_fold(hir_uclass_query(ClassQuery::Binary(<span class="string">"greek"</span>))) |
| ); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?-u)[a]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'a'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?-u)[\x00]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'\0'</span>, <span class="string">b'\0'</span>)])); |
| <span class="macro">assert_eq!</span>(t_bytes(<span class="string">r"(?-u)[\xFF]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'\xFF'</span>, <span class="string">b'\xFF'</span>)])); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">"(?i)[a]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'A'</span>), (<span class="string">'a'</span>, <span class="string">'a'</span>)])); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)[k]"</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'K'</span>, <span class="string">'K'</span>), (<span class="string">'k'</span>, <span class="string">'k'</span>), (<span class="string">'\u{212A}'</span>, <span class="string">'\u{212A}'</span>),]) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)[β]"</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'Β'</span>, <span class="string">'Β'</span>), (<span class="string">'β'</span>, <span class="string">'β'</span>), (<span class="string">'ϐ'</span>, <span class="string">'ϐ'</span>),]) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?i-u)[k]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'K'</span>, <span class="string">b'K'</span>), (<span class="string">b'k'</span>, <span class="string">b'k'</span>),])); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[^a]"</span>), class_negate(uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'a'</span>)]))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[^\x00]"</span>), class_negate(uclass(<span class="kw-2">&</span>[(<span class="string">'\0'</span>, <span class="string">'\0'</span>)]))); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">"(?-u)[^a]"</span>), |
| class_negate(bclass(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'a'</span>)])) |
| ); |
| <span class="attribute">#[cfg(any(feature = <span class="string">"unicode-perl"</span>, feature = <span class="string">"unicode-gencat"</span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[^\d]"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>))) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[^\pZ]"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>))) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[^\p{separator}]"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>))) |
| ); |
| <span class="attribute">#[cfg(all(feature = <span class="string">"unicode-case"</span>, feature = <span class="string">"unicode-script"</span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)[^\p{greek}]"</span>), |
| hir_negate(hir_case_fold(hir_uclass_query(ClassQuery::Binary( |
| <span class="string">"greek" |
| </span>)))) |
| ); |
| <span class="attribute">#[cfg(all(feature = <span class="string">"unicode-case"</span>, feature = <span class="string">"unicode-script"</span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)[\P{greek}]"</span>), |
| hir_negate(hir_case_fold(hir_uclass_query(ClassQuery::Binary( |
| <span class="string">"greek" |
| </span>)))) |
| ); |
| |
| <span class="comment">// Test some weird cases. |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"[\[]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'['</span>, <span class="string">'['</span>)])); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[&]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'&'</span>, <span class="string">'&'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\&]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'&'</span>, <span class="string">'&'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\&\&]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'&'</span>, <span class="string">'&'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\x00-&]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\0'</span>, <span class="string">'&'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[&-\xFF]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'&'</span>, <span class="string">'\u{FF}'</span>)])); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[~]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'~'</span>, <span class="string">'~'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\~]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'~'</span>, <span class="string">'~'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\~\~]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'~'</span>, <span class="string">'~'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\x00-~]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\0'</span>, <span class="string">'~'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[~-\xFF]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'~'</span>, <span class="string">'\u{FF}'</span>)])); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[-]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'-'</span>, <span class="string">'-'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\-]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'-'</span>, <span class="string">'-'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\-\-]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'-'</span>, <span class="string">'-'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\x00-\-]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\0'</span>, <span class="string">'-'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\--\xFF]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'-'</span>, <span class="string">'\u{FF}'</span>)])); |
| |
| <span class="macro">assert_eq!</span>( |
| t_err(<span class="string">"(?-u)[^a]"</span>), |
| TestError { |
| kind: hir::ErrorKind::InvalidUtf8, |
| span: Span::new( |
| Position::new(<span class="number">5</span>, <span class="number">1</span>, <span class="number">6</span>), |
| Position::new(<span class="number">9</span>, <span class="number">1</span>, <span class="number">10</span>) |
| ), |
| } |
| ); |
| <span class="attribute">#[cfg(any(feature = <span class="string">"unicode-perl"</span>, feature = <span class="string">"unicode-bool"</span>))] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"[^\s\S]"</span>), hir_uclass(<span class="kw-2">&</span>[]),); |
| <span class="attribute">#[cfg(any(feature = <span class="string">"unicode-perl"</span>, feature = <span class="string">"unicode-bool"</span>))] |
| </span><span class="macro">assert_eq!</span>(t_bytes(<span class="string">r"(?-u)[^\s\S]"</span>), hir_bclass(<span class="kw-2">&</span>[]),); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_bracketed_union() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[a-zA-Z]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>), (<span class="string">'a'</span>, <span class="string">'z'</span>)])); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[a\pZb]"</span>), |
| hir_union( |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'b'</span>)]), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ) |
| ); |
| <span class="attribute">#[cfg(all(feature = <span class="string">"unicode-gencat"</span>, feature = <span class="string">"unicode-script"</span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[\pZ\p{Greek}]"</span>), |
| hir_union( |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"greek"</span>)), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ) |
| ); |
| <span class="attribute">#[cfg(all( |
| feature = <span class="string">"unicode-age"</span>, |
| feature = <span class="string">"unicode-gencat"</span>, |
| feature = <span class="string">"unicode-script" |
| </span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[\p{age:3.0}\pZ\p{Greek}]"</span>), |
| hir_union( |
| hir_uclass_query(ClassQuery::ByValue { |
| property_name: <span class="string">"age"</span>, |
| property_value: <span class="string">"3.0"</span>, |
| }), |
| hir_union( |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"greek"</span>)), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ) |
| ) |
| ); |
| <span class="attribute">#[cfg(all( |
| feature = <span class="string">"unicode-age"</span>, |
| feature = <span class="string">"unicode-gencat"</span>, |
| feature = <span class="string">"unicode-script" |
| </span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[[[\p{age:3.0}\pZ]\p{Greek}][\p{Cyrillic}]]"</span>), |
| hir_union( |
| hir_uclass_query(ClassQuery::ByValue { |
| property_name: <span class="string">"age"</span>, |
| property_value: <span class="string">"3.0"</span>, |
| }), |
| hir_union( |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"cyrillic"</span>)), |
| hir_union( |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"greek"</span>)), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ) |
| ) |
| ) |
| ); |
| |
| <span class="attribute">#[cfg(all( |
| feature = <span class="string">"unicode-age"</span>, |
| feature = <span class="string">"unicode-case"</span>, |
| feature = <span class="string">"unicode-gencat"</span>, |
| feature = <span class="string">"unicode-script" |
| </span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)[\p{age:3.0}\pZ\p{Greek}]"</span>), |
| hir_case_fold(hir_union( |
| hir_uclass_query(ClassQuery::ByValue { |
| property_name: <span class="string">"age"</span>, |
| property_value: <span class="string">"3.0"</span>, |
| }), |
| hir_union( |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"greek"</span>)), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ) |
| )) |
| ); |
| <span class="attribute">#[cfg(all( |
| feature = <span class="string">"unicode-age"</span>, |
| feature = <span class="string">"unicode-gencat"</span>, |
| feature = <span class="string">"unicode-script" |
| </span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[^\p{age:3.0}\pZ\p{Greek}]"</span>), |
| hir_negate(hir_union( |
| hir_uclass_query(ClassQuery::ByValue { |
| property_name: <span class="string">"age"</span>, |
| property_value: <span class="string">"3.0"</span>, |
| }), |
| hir_union( |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"greek"</span>)), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ) |
| )) |
| ); |
| <span class="attribute">#[cfg(all( |
| feature = <span class="string">"unicode-age"</span>, |
| feature = <span class="string">"unicode-case"</span>, |
| feature = <span class="string">"unicode-gencat"</span>, |
| feature = <span class="string">"unicode-script" |
| </span>))] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)[^\p{age:3.0}\pZ\p{Greek}]"</span>), |
| hir_negate(hir_case_fold(hir_union( |
| hir_uclass_query(ClassQuery::ByValue { |
| property_name: <span class="string">"age"</span>, |
| property_value: <span class="string">"3.0"</span>, |
| }), |
| hir_union( |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"greek"</span>)), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ) |
| ))) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_bracketed_nested() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[a[^c]]"</span>), class_negate(uclass(<span class="kw-2">&</span>[(<span class="string">'c'</span>, <span class="string">'c'</span>)]))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[a-b[^c]]"</span>), class_negate(uclass(<span class="kw-2">&</span>[(<span class="string">'c'</span>, <span class="string">'c'</span>)]))); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[a-c[^c]]"</span>), class_negate(uclass(<span class="kw-2">&</span>[]))); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[^a[^c]]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'c'</span>, <span class="string">'c'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[^a-b[^c]]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'c'</span>, <span class="string">'c'</span>)])); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)[a[^c]]"</span>), |
| hir_negate(class_case_fold(uclass(<span class="kw-2">&</span>[(<span class="string">'c'</span>, <span class="string">'c'</span>)]))) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)[a-b[^c]]"</span>), |
| hir_negate(class_case_fold(uclass(<span class="kw-2">&</span>[(<span class="string">'c'</span>, <span class="string">'c'</span>)]))) |
| ); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"(?i)[^a[^c]]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'C'</span>, <span class="string">'C'</span>), (<span class="string">'c'</span>, <span class="string">'c'</span>)])); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?i)[^a-b[^c]]"</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'C'</span>, <span class="string">'C'</span>), (<span class="string">'c'</span>, <span class="string">'c'</span>)]) |
| ); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[^a-c[^c]]"</span>), hir_uclass(<span class="kw-2">&</span>[]),); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"(?i)[^a-c[^c]]"</span>), hir_uclass(<span class="kw-2">&</span>[]),); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_bracketed_intersect() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[abc&&b-c]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'b'</span>, <span class="string">'c'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[abc&&[b-c]]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'b'</span>, <span class="string">'c'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[[abc]&&[b-c]]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'b'</span>, <span class="string">'c'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[a-z&&b-y&&c-x]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'c'</span>, <span class="string">'x'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[c-da-b&&a-d]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'d'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"[a-d&&c-da-b]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'d'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[a-z&&a-c]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'c'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[[a-z&&a-c]]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'c'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[^[a-z&&a-c]]"</span>), hir_negate(hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'c'</span>)]))); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?-u)[abc&&b-c]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'b'</span>, <span class="string">b'c'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?-u)[abc&&[b-c]]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'b'</span>, <span class="string">b'c'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?-u)[[abc]&&[b-c]]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'b'</span>, <span class="string">b'c'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?-u)[a-z&&b-y&&c-x]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'c'</span>, <span class="string">b'x'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?-u)[c-da-b&&a-d]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'd'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?-u)[a-d&&c-da-b]"</span>), hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'd'</span>)])); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)[abc&&b-c]"</span>), |
| hir_case_fold(hir_uclass(<span class="kw-2">&</span>[(<span class="string">'b'</span>, <span class="string">'c'</span>)])) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)[abc&&[b-c]]"</span>), |
| hir_case_fold(hir_uclass(<span class="kw-2">&</span>[(<span class="string">'b'</span>, <span class="string">'c'</span>)])) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)[[abc]&&[b-c]]"</span>), |
| hir_case_fold(hir_uclass(<span class="kw-2">&</span>[(<span class="string">'b'</span>, <span class="string">'c'</span>)])) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)[a-z&&b-y&&c-x]"</span>), |
| hir_case_fold(hir_uclass(<span class="kw-2">&</span>[(<span class="string">'c'</span>, <span class="string">'x'</span>)])) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)[c-da-b&&a-d]"</span>), |
| hir_case_fold(hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'d'</span>)])) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-case"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i)[a-d&&c-da-b]"</span>), |
| hir_case_fold(hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'d'</span>)])) |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i-u)[abc&&b-c]"</span>), |
| hir_case_fold(hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'b'</span>, <span class="string">b'c'</span>)])) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i-u)[abc&&[b-c]]"</span>), |
| hir_case_fold(hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'b'</span>, <span class="string">b'c'</span>)])) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i-u)[[abc]&&[b-c]]"</span>), |
| hir_case_fold(hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'b'</span>, <span class="string">b'c'</span>)])) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i-u)[a-z&&b-y&&c-x]"</span>), |
| hir_case_fold(hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'c'</span>, <span class="string">b'x'</span>)])) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i-u)[c-da-b&&a-d]"</span>), |
| hir_case_fold(hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'd'</span>)])) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?i-u)[a-d&&c-da-b]"</span>), |
| hir_case_fold(hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'd'</span>)])) |
| ); |
| |
| <span class="comment">// In `[a^]`, `^` does not need to be escaped, so it makes sense that |
| // `^` is also allowed to be unescaped after `&&`. |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"[\^&&^]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'^'</span>, <span class="string">'^'</span>)])); |
| <span class="comment">// `]` needs to be escaped after `&&` since it's not at start of class. |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"[]&&\]]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">']'</span>, <span class="string">']'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[-&&-]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'-'</span>, <span class="string">'-'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\&&&&]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'&'</span>, <span class="string">'&'</span>)])); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[\&&&\&]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'&'</span>, <span class="string">'&'</span>)])); |
| <span class="comment">// Test precedence. |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[a-w&&[^c-g]z]"</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'b'</span>), (<span class="string">'h'</span>, <span class="string">'w'</span>)]) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_bracketed_intersect_negate() { |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-perl"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[^\w&&\d]"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>))) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[^[a-z&&a-c]]"</span>), hir_negate(hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'c'</span>)]))); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-perl"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[^[\w&&\d]]"</span>), |
| hir_negate(hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>))) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-perl"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[^[^\w&&\d]]"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"digit"</span>)) |
| ); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-perl"</span>)] |
| </span><span class="macro">assert_eq!</span>(t(<span class="string">r"[[[^\w]&&[^\d]]]"</span>), hir_negate(hir_uclass_perl_word())); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-perl"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?-u)[^\w&&\d]"</span>), |
| hir_negate(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Digit)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?-u)[^[a-z&&a-c]]"</span>), |
| hir_negate(hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'c'</span>)])) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?-u)[^[\w&&\d]]"</span>), |
| hir_negate(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Digit)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?-u)[^[^\w&&\d]]"</span>), |
| hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Digit) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t_bytes(<span class="string">r"(?-u)[[[^\w]&&[^\d]]]"</span>), |
| hir_negate(hir_ascii_bclass(<span class="kw-2">&</span>ast::ClassAsciiKind::Word)) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_bracketed_difference() { |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[\pL--[:ascii:]]"</span>), |
| hir_difference( |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"letter"</span>)), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'\0'</span>, <span class="string">'\x7F'</span>)]) |
| ) |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?-u)[[:alpha:]--[:lower:]]"</span>), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'A'</span>, <span class="string">b'Z'</span>)]) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>class_bracketed_symmetric_difference() { |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-script"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"[\p{sc:Greek}~~\p{scx:Greek}]"</span>), |
| hir_uclass(<span class="kw-2">&</span>[ |
| (<span class="string">'\u{0342}'</span>, <span class="string">'\u{0342}'</span>), |
| (<span class="string">'\u{0345}'</span>, <span class="string">'\u{0345}'</span>), |
| (<span class="string">'\u{1DC0}'</span>, <span class="string">'\u{1DC1}'</span>), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"[a-g~~c-j]"</span>), hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'b'</span>), (<span class="string">'h'</span>, <span class="string">'j'</span>)])); |
| |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?-u)[a-g~~c-j]"</span>), |
| hir_bclass(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'b'</span>), (<span class="string">b'h'</span>, <span class="string">b'j'</span>)]) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>ignore_whitespace() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?x)\12 3"</span>), hir_lit(<span class="string">"\n3"</span>)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?x)\x { 53 }"</span>), hir_lit(<span class="string">"S"</span>)); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?x)\x # comment |
| { # comment |
| 53 # comment |
| } #comment"</span>), |
| hir_lit(<span class="string">"S"</span>) |
| ); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?x)\x 53"</span>), hir_lit(<span class="string">"S"</span>)); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?x)\x # comment |
| 53 # comment"</span>), |
| hir_lit(<span class="string">"S"</span>) |
| ); |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?x)\x5 3"</span>), hir_lit(<span class="string">"S"</span>)); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?x)\p # comment |
| { # comment |
| Separator # comment |
| } # comment"</span>), |
| hir_uclass_query(ClassQuery::Binary(<span class="string">"separator"</span>)) |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">r"(?x)a # comment |
| { # comment |
| 5 # comment |
| , # comment |
| 10 # comment |
| } # comment"</span>), |
| hir_range(<span class="bool-val">true</span>, <span class="number">5</span>, <span class="prelude-val">Some</span>(<span class="number">10</span>), hir_lit(<span class="string">"a"</span>)) |
| ); |
| |
| <span class="macro">assert_eq!</span>(t(<span class="string">r"(?x)a\ # hi there"</span>), hir_lit(<span class="string">"a "</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_is_utf8() { |
| <span class="comment">// Positive examples. |
| </span><span class="macro">assert!</span>(props_bytes(<span class="string">r"a"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"ab"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"(?-u)a"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"(?-u)ab"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"\xFF"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"\xFF\xFF"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"[^a]"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"[^a][^a]"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"\b"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"\B"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"(?-u)\b"</span>).is_utf8()); |
| <span class="macro">assert!</span>(props_bytes(<span class="string">r"(?-u)\B"</span>).is_utf8()); |
| |
| <span class="comment">// Negative examples. |
| </span><span class="macro">assert!</span>(!props_bytes(<span class="string">r"(?-u)\xFF"</span>).is_utf8()); |
| <span class="macro">assert!</span>(!props_bytes(<span class="string">r"(?-u)\xFF\xFF"</span>).is_utf8()); |
| <span class="macro">assert!</span>(!props_bytes(<span class="string">r"(?-u)[^a]"</span>).is_utf8()); |
| <span class="macro">assert!</span>(!props_bytes(<span class="string">r"(?-u)[^a][^a]"</span>).is_utf8()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_captures_len() { |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, props(<span class="string">r"a"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, props(<span class="string">r"(?:a)"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, props(<span class="string">r"(?i-u:a)"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, props(<span class="string">r"(?i-u)a"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, props(<span class="string">r"(a)"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, props(<span class="string">r"(?P<foo>a)"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, props(<span class="string">r"()"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, props(<span class="string">r"()a"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, props(<span class="string">r"(a)+"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, props(<span class="string">r"(a)(b)"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, props(<span class="string">r"(a)|(b)"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, props(<span class="string">r"((a))"</span>).explicit_captures_len()); |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, props(<span class="string">r"([a&&b])"</span>).explicit_captures_len()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_static_captures_len() { |
| <span class="kw">let </span>len = |pattern| props(pattern).static_explicit_captures_len(); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), len(<span class="string">r""</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), len(<span class="string">r"foo|bar"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">r"(foo)|bar"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">r"foo|(bar)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">r"(foo|bar)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">r"(a|b|c|d|e|f)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">r"(a)|(b)|(c)|(d)|(e)|(f)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), len(<span class="string">r"(a)(b)|(c)(d)|(e)(f)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">6</span>), len(<span class="string">r"(a)(b)(c)(d)(e)(f)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">3</span>), len(<span class="string">r"(a)(b)(extra)|(a)(b)()"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">3</span>), len(<span class="string">r"(a)(b)((?:extra)?)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">r"(a)(b)(extra)?"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">r"(foo)|(bar)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), len(<span class="string">r"(foo)(bar)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), len(<span class="string">r"(foo)+(bar)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">r"(foo)*(bar)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), len(<span class="string">r"(foo)?{0}"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">r"(foo)?{1}"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">r"(foo){1}"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">r"(foo){1,}"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">r"(foo){1,}?"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">r"(foo){1,}??"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">r"(foo){0,}"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">r"(foo)(?:bar)"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), len(<span class="string">r"(foo(?:bar)+)(?:baz(boo))"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), len(<span class="string">r"(?P<bar>foo)(?:bar)(bal|loon)"</span>)); |
| <span class="macro">assert_eq!</span>( |
| <span class="prelude-val">Some</span>(<span class="number">2</span>), |
| len(<span class="string">r#"<(a)[^>]+href="([^"]+)"|<(img)[^>]+src="([^"]+)""#</span>) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_is_all_assertions() { |
| <span class="comment">// Positive examples. |
| </span><span class="kw">let </span>p = props(<span class="string">r"\b"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="kw">let </span>p = props(<span class="string">r"\B"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="kw">let </span>p = props(<span class="string">r"^"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="kw">let </span>p = props(<span class="string">r"$"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="kw">let </span>p = props(<span class="string">r"\A"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="kw">let </span>p = props(<span class="string">r"\z"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="kw">let </span>p = props(<span class="string">r"$^\z\A\b\B"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="kw">let </span>p = props(<span class="string">r"$|^|\z|\A|\b|\B"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="kw">let </span>p = props(<span class="string">r"^$|$^"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="kw">let </span>p = props(<span class="string">r"((\b)+())*^"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">0</span>)); |
| |
| <span class="comment">// Negative examples. |
| </span><span class="kw">let </span>p = props(<span class="string">r"^a"</span>); |
| <span class="macro">assert!</span>(!p.look_set().is_empty()); |
| <span class="macro">assert_eq!</span>(p.minimum_len(), <span class="prelude-val">Some</span>(<span class="number">1</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_look_set_prefix_any() { |
| <span class="kw">let </span>p = props(<span class="string">r"(?-u)(?i:(?:\b|_)win(?:32|64|dows)?(?:\b|_))"</span>); |
| <span class="macro">assert!</span>(p.look_set_prefix_any().contains(Look::WordAscii)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_is_anchored() { |
| <span class="kw">let </span>is_start = |p| props(p).look_set_prefix().contains(Look::Start); |
| <span class="kw">let </span>is_end = |p| props(p).look_set_suffix().contains(Look::End); |
| |
| <span class="comment">// Positive examples. |
| </span><span class="macro">assert!</span>(is_start(<span class="string">r"^"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"$"</span>)); |
| |
| <span class="macro">assert!</span>(is_start(<span class="string">r"^^"</span>)); |
| <span class="macro">assert!</span>(props(<span class="string">r"$$"</span>).look_set_suffix().contains(Look::End)); |
| |
| <span class="macro">assert!</span>(is_start(<span class="string">r"^$"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"^$"</span>)); |
| |
| <span class="macro">assert!</span>(is_start(<span class="string">r"^foo"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"foo$"</span>)); |
| |
| <span class="macro">assert!</span>(is_start(<span class="string">r"^foo|^bar"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"foo$|bar$"</span>)); |
| |
| <span class="macro">assert!</span>(is_start(<span class="string">r"^(foo|bar)"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"(foo|bar)$"</span>)); |
| |
| <span class="macro">assert!</span>(is_start(<span class="string">r"^+"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"$+"</span>)); |
| <span class="macro">assert!</span>(is_start(<span class="string">r"^++"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"$++"</span>)); |
| <span class="macro">assert!</span>(is_start(<span class="string">r"(^)+"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"($)+"</span>)); |
| |
| <span class="macro">assert!</span>(is_start(<span class="string">r"$^"</span>)); |
| <span class="macro">assert!</span>(is_start(<span class="string">r"$^"</span>)); |
| <span class="macro">assert!</span>(is_start(<span class="string">r"$^|^$"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"$^|^$"</span>)); |
| |
| <span class="macro">assert!</span>(is_start(<span class="string">r"\b^"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"$\b"</span>)); |
| <span class="macro">assert!</span>(is_start(<span class="string">r"^(?m:^)"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"(?m:$)$"</span>)); |
| <span class="macro">assert!</span>(is_start(<span class="string">r"(?m:^)^"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"$(?m:$)"</span>)); |
| |
| <span class="comment">// Negative examples. |
| </span><span class="macro">assert!</span>(!is_start(<span class="string">r"(?m)^"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"(?m)$"</span>)); |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"(?m:^$)|$^"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"(?m:^$)|$^"</span>)); |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"$^|(?m:^$)"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"$^|(?m:^$)"</span>)); |
| |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"a^"</span>)); |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"$a"</span>)); |
| |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"a^"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"$a"</span>)); |
| |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"^foo|bar"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"foo|bar$"</span>)); |
| |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"^*"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"$*"</span>)); |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"^*+"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"$*+"</span>)); |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"^+*"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"$+*"</span>)); |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"(^)*"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"($)*"</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_is_any_anchored() { |
| <span class="kw">let </span>is_start = |p| props(p).look_set().contains(Look::Start); |
| <span class="kw">let </span>is_end = |p| props(p).look_set().contains(Look::End); |
| |
| <span class="comment">// Positive examples. |
| </span><span class="macro">assert!</span>(is_start(<span class="string">r"^"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"$"</span>)); |
| <span class="macro">assert!</span>(is_start(<span class="string">r"\A"</span>)); |
| <span class="macro">assert!</span>(is_end(<span class="string">r"\z"</span>)); |
| |
| <span class="comment">// Negative examples. |
| </span><span class="macro">assert!</span>(!is_start(<span class="string">r"(?m)^"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"(?m)$"</span>)); |
| <span class="macro">assert!</span>(!is_start(<span class="string">r"$"</span>)); |
| <span class="macro">assert!</span>(!is_end(<span class="string">r"^"</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_can_empty() { |
| <span class="comment">// Positive examples. |
| </span><span class="kw">let </span>assert_empty = |
| |p| <span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), props_bytes(p).minimum_len()); |
| assert_empty(<span class="string">r""</span>); |
| assert_empty(<span class="string">r"()"</span>); |
| assert_empty(<span class="string">r"()*"</span>); |
| assert_empty(<span class="string">r"()+"</span>); |
| assert_empty(<span class="string">r"()?"</span>); |
| assert_empty(<span class="string">r"a*"</span>); |
| assert_empty(<span class="string">r"a?"</span>); |
| assert_empty(<span class="string">r"a{0}"</span>); |
| assert_empty(<span class="string">r"a{0,}"</span>); |
| assert_empty(<span class="string">r"a{0,1}"</span>); |
| assert_empty(<span class="string">r"a{0,10}"</span>); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span>assert_empty(<span class="string">r"\pL*"</span>); |
| assert_empty(<span class="string">r"a*|b"</span>); |
| assert_empty(<span class="string">r"b|a*"</span>); |
| assert_empty(<span class="string">r"a|"</span>); |
| assert_empty(<span class="string">r"|a"</span>); |
| assert_empty(<span class="string">r"a||b"</span>); |
| assert_empty(<span class="string">r"a*a?(abcd)*"</span>); |
| assert_empty(<span class="string">r"^"</span>); |
| assert_empty(<span class="string">r"$"</span>); |
| assert_empty(<span class="string">r"(?m)^"</span>); |
| assert_empty(<span class="string">r"(?m)$"</span>); |
| assert_empty(<span class="string">r"\A"</span>); |
| assert_empty(<span class="string">r"\z"</span>); |
| assert_empty(<span class="string">r"\B"</span>); |
| assert_empty(<span class="string">r"(?-u)\B"</span>); |
| assert_empty(<span class="string">r"\b"</span>); |
| assert_empty(<span class="string">r"(?-u)\b"</span>); |
| |
| <span class="comment">// Negative examples. |
| </span><span class="kw">let </span>assert_non_empty = |
| |p| <span class="macro">assert_ne!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), props_bytes(p).minimum_len()); |
| assert_non_empty(<span class="string">r"a+"</span>); |
| assert_non_empty(<span class="string">r"a{1}"</span>); |
| assert_non_empty(<span class="string">r"a{1,}"</span>); |
| assert_non_empty(<span class="string">r"a{1,2}"</span>); |
| assert_non_empty(<span class="string">r"a{1,10}"</span>); |
| assert_non_empty(<span class="string">r"b|a"</span>); |
| assert_non_empty(<span class="string">r"a*a+(abcd)*"</span>); |
| <span class="attribute">#[cfg(feature = <span class="string">"unicode-gencat"</span>)] |
| </span>assert_non_empty(<span class="string">r"\P{any}"</span>); |
| assert_non_empty(<span class="string">r"[a--a]"</span>); |
| assert_non_empty(<span class="string">r"[a&&b]"</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_is_literal() { |
| <span class="comment">// Positive examples. |
| </span><span class="macro">assert!</span>(props(<span class="string">r"a"</span>).is_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"ab"</span>).is_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"abc"</span>).is_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"(?m)abc"</span>).is_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"(?:a)"</span>).is_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"foo(?:a)"</span>).is_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"(?:a)foo"</span>).is_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"[a]"</span>).is_literal()); |
| |
| <span class="comment">// Negative examples. |
| </span><span class="macro">assert!</span>(!props(<span class="string">r""</span>).is_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"^"</span>).is_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"a|b"</span>).is_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"(a)"</span>).is_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"a+"</span>).is_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"foo(a)"</span>).is_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"(a)foo"</span>).is_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"[ab]"</span>).is_literal()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>analysis_is_alternation_literal() { |
| <span class="comment">// Positive examples. |
| </span><span class="macro">assert!</span>(props(<span class="string">r"a"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"ab"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"abc"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"(?m)abc"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"foo|bar"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"foo|bar|baz"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"[a]"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"(?:ab)|cd"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(props(<span class="string">r"ab|(?:cd)"</span>).is_alternation_literal()); |
| |
| <span class="comment">// Negative examples. |
| </span><span class="macro">assert!</span>(!props(<span class="string">r""</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"^"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"(a)"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"a+"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"foo(a)"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"(a)foo"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"[ab]"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"[ab]|b"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"a|[ab]"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"(a)|b"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"a|(b)"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"a|b"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"a|b|c"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"[a]|b"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"a|[b]"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"(?:a)|b"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"a|(?:b)"</span>).is_alternation_literal()); |
| <span class="macro">assert!</span>(!props(<span class="string">r"(?:z|xx)@|xx"</span>).is_alternation_literal()); |
| } |
| |
| <span class="comment">// This tests that the smart Hir::concat constructor simplifies the given |
| // exprs in a way we expect. |
| </span><span class="attribute">#[test] |
| </span><span class="kw">fn </span>smart_concat() { |
| <span class="macro">assert_eq!</span>(t(<span class="string">""</span>), Hir::empty()); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?:)"</span>), Hir::empty()); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"abc"</span>), hir_lit(<span class="string">"abc"</span>)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"(?:foo)(?:bar)"</span>), hir_lit(<span class="string">"foobar"</span>)); |
| <span class="macro">assert_eq!</span>(t(<span class="string">"quux(?:foo)(?:bar)baz"</span>), hir_lit(<span class="string">"quuxfoobarbaz"</span>)); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"foo(?:bar^baz)quux"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_lit(<span class="string">"foobar"</span>), |
| hir_look(hir::Look::Start), |
| hir_lit(<span class="string">"bazquux"</span>), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"foo(?:ba(?:r^b)az)quux"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_lit(<span class="string">"foobar"</span>), |
| hir_look(hir::Look::Start), |
| hir_lit(<span class="string">"bazquux"</span>), |
| ]) |
| ); |
| } |
| |
| <span class="comment">// This tests that the smart Hir::alternation constructor simplifies the |
| // given exprs in a way we expect. |
| </span><span class="attribute">#[test] |
| </span><span class="kw">fn </span>smart_alternation() { |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"(?:foo)|(?:bar)"</span>), |
| hir_alt(<span class="macro">vec!</span>[hir_lit(<span class="string">"foo"</span>), hir_lit(<span class="string">"bar"</span>)]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"quux|(?:abc|def|xyz)|baz"</span>), |
| hir_alt(<span class="macro">vec!</span>[ |
| hir_lit(<span class="string">"quux"</span>), |
| hir_lit(<span class="string">"abc"</span>), |
| hir_lit(<span class="string">"def"</span>), |
| hir_lit(<span class="string">"xyz"</span>), |
| hir_lit(<span class="string">"baz"</span>), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"quux|(?:abc|(?:def|mno)|xyz)|baz"</span>), |
| hir_alt(<span class="macro">vec!</span>[ |
| hir_lit(<span class="string">"quux"</span>), |
| hir_lit(<span class="string">"abc"</span>), |
| hir_lit(<span class="string">"def"</span>), |
| hir_lit(<span class="string">"mno"</span>), |
| hir_lit(<span class="string">"xyz"</span>), |
| hir_lit(<span class="string">"baz"</span>), |
| ]) |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"a|b|c|d|e|f|x|y|z"</span>), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'f'</span>), (<span class="string">'x'</span>, <span class="string">'z'</span>)]), |
| ); |
| <span class="comment">// Tests that we lift common prefixes out of an alternation. |
| </span><span class="macro">assert_eq!</span>( |
| t(<span class="string">"[A-Z]foo|[A-Z]quux"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>)]), |
| hir_alt(<span class="macro">vec!</span>[hir_lit(<span class="string">"foo"</span>), hir_lit(<span class="string">"quux"</span>)]), |
| ]), |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[A-Z][A-Z]|[A-Z]quux"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>)]), |
| hir_alt(<span class="macro">vec!</span>[hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>)]), hir_lit(<span class="string">"quux"</span>)]), |
| ]), |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[A-Z][A-Z]|[A-Z][A-Z]quux"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>)]), |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>)]), |
| hir_alt(<span class="macro">vec!</span>[Hir::empty(), hir_lit(<span class="string">"quux"</span>)]), |
| ]), |
| ); |
| <span class="macro">assert_eq!</span>( |
| t(<span class="string">"[A-Z]foo|[A-Z]foobar"</span>), |
| hir_cat(<span class="macro">vec!</span>[ |
| hir_uclass(<span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>)]), |
| hir_alt(<span class="macro">vec!</span>[hir_lit(<span class="string">"foo"</span>), hir_lit(<span class="string">"foobar"</span>)]), |
| ]), |
| ); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="regex_syntax" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
