| <!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/serde-1.0.163/src/de/impls.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>impls.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="../../../serde/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="../../../serde/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="2733">2733</span> |
| <span id="2734">2734</span> |
| <span id="2735">2735</span> |
| </pre><pre class="rust"><code><span class="kw">use </span>lib::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span>de::{ |
| Deserialize, Deserializer, EnumAccess, Error, SeqAccess, Unexpected, VariantAccess, Visitor, |
| }; |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>, not(no_core_duration)))] |
| </span><span class="kw">use </span>de::MapAccess; |
| |
| <span class="kw">use </span>seed::InPlaceSeed; |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="kw">use </span>__private::size_hint; |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">struct </span>UnitVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>UnitVisitor { |
| <span class="kw">type </span>Value = (); |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"unit"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_unit<E>(<span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>() { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_unit(UnitVisitor) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"unstable"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>! { |
| <span class="kw">fn </span>deserialize<D>(_deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="prelude-val">Err</span>(Error::custom(<span class="string">"cannot deserialize `!`"</span>)) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">struct </span>BoolVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>BoolVisitor { |
| <span class="kw">type </span>Value = bool; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a boolean"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_bool<E>(<span class="self">self</span>, v: bool) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>bool { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_bool(BoolVisitor) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="macro">macro_rules! </span>impl_deserialize_num { |
| (<span class="macro-nonterminal">$primitive</span>:ident, <span class="macro-nonterminal">$nonzero</span>:ident $(cfg($(<span class="macro-nonterminal">$cfg</span>:tt)<span class="kw-2">*</span>))<span class="kw-2">*</span>, <span class="macro-nonterminal">$deserialize</span>:ident $(<span class="macro-nonterminal">$method</span>:<span class="macro">ident!</span>($(<span class="macro-nonterminal">$val</span>:ident : <span class="macro-nonterminal">$visit</span>:ident)<span class="kw-2">*</span>);)<span class="kw-2">*</span>) => { |
| <span class="macro">impl_deserialize_num!</span>(<span class="macro-nonterminal">$primitive</span>, <span class="macro-nonterminal">$deserialize </span>$(<span class="macro-nonterminal">$</span><span class="macro">method!</span>($(<span class="macro-nonterminal">$val </span>: <span class="macro-nonterminal">$visit</span>)<span class="kw-2">*</span>);)<span class="kw-2">*</span>); |
| |
| <span class="attribute">#[cfg(all(not(no_num_nonzero), $($(<span class="macro-nonterminal">$cfg</span>)<span class="kw-2">*</span>)<span class="kw-2">*</span>))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>num::<span class="macro-nonterminal">$nonzero </span>{ |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>NonZeroVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>NonZeroVisitor { |
| <span class="kw">type </span>Value = num::<span class="macro-nonterminal">$nonzero</span>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="macro">concat!</span>(<span class="string">"a nonzero "</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$primitive</span>))) |
| } |
| |
| $($(<span class="macro-nonterminal">$</span><span class="macro">method!</span>(<span class="macro-nonterminal">nonzero $primitive $val </span>: <span class="macro-nonterminal">$visit</span>);)<span class="kw-2">*</span>)* |
| } |
| |
| deserializer.<span class="macro-nonterminal">$deserialize</span>(NonZeroVisitor) |
| } |
| } |
| }; |
| |
| (<span class="macro-nonterminal">$primitive</span>:ident, <span class="macro-nonterminal">$deserialize</span>:ident $(<span class="macro-nonterminal">$method</span>:<span class="macro">ident!</span>($(<span class="macro-nonterminal">$val</span>:ident : <span class="macro-nonterminal">$visit</span>:ident)<span class="kw-2">*</span>);)<span class="kw-2">*</span>) => { |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="macro-nonterminal">$primitive </span>{ |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>PrimitiveVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>PrimitiveVisitor { |
| <span class="kw">type </span>Value = <span class="macro-nonterminal">$primitive</span>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="macro">stringify!</span>(<span class="macro-nonterminal">$primitive</span>)) |
| } |
| |
| $($(<span class="macro-nonterminal">$</span><span class="macro">method!</span>(<span class="macro-nonterminal">$val </span>: <span class="macro-nonterminal">$visit</span>);)<span class="kw-2">*</span>)* |
| } |
| |
| deserializer.<span class="macro-nonterminal">$deserialize</span>(PrimitiveVisitor) |
| } |
| } |
| }; |
| } |
| |
| <span class="macro">macro_rules! </span>num_self { |
| (<span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v) |
| } |
| }; |
| |
| (nonzero <span class="macro-nonterminal">$primitive</span>:ident <span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(nonzero) = <span class="self">Self</span>::Value::new(v) { |
| <span class="prelude-val">Ok</span>(nonzero) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Unsigned(<span class="number">0</span>), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| } |
| }; |
| } |
| |
| <span class="macro">macro_rules! </span>num_as_self { |
| (<span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v <span class="kw">as </span><span class="self">Self</span>::Value) |
| } |
| }; |
| |
| (nonzero <span class="macro-nonterminal">$primitive</span>:ident <span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(nonzero) = <span class="self">Self</span>::Value::new(v <span class="kw">as </span><span class="macro-nonterminal">$primitive</span>) { |
| <span class="prelude-val">Ok</span>(nonzero) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Unsigned(<span class="number">0</span>), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| } |
| }; |
| } |
| |
| <span class="macro">macro_rules! </span>int_to_int { |
| (<span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if </span><span class="self">Self</span>::Value::min_value() <span class="kw">as </span>i64 <= v <span class="kw">as </span>i64 |
| && v <span class="kw">as </span>i64 <= <span class="self">Self</span>::Value::max_value() <span class="kw">as </span>i64 |
| { |
| <span class="prelude-val">Ok</span>(v <span class="kw">as </span><span class="self">Self</span>::Value) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Signed(v <span class="kw">as </span>i64), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| } |
| }; |
| |
| (nonzero <span class="macro-nonterminal">$primitive</span>:ident <span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if </span><span class="macro-nonterminal">$primitive::min_value</span>() <span class="kw">as </span>i64 <= v <span class="kw">as </span>i64 |
| && v <span class="kw">as </span>i64 <= <span class="macro-nonterminal">$primitive::max_value</span>() <span class="kw">as </span>i64 |
| { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(nonzero) = <span class="self">Self</span>::Value::new(v <span class="kw">as </span><span class="macro-nonterminal">$primitive</span>) { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(nonzero); |
| } |
| } |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Signed(v <span class="kw">as </span>i64), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| }; |
| } |
| |
| <span class="macro">macro_rules! </span>int_to_uint { |
| (<span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if </span><span class="number">0 </span><= v && v <span class="kw">as </span>u64 <= <span class="self">Self</span>::Value::max_value() <span class="kw">as </span>u64 { |
| <span class="prelude-val">Ok</span>(v <span class="kw">as </span><span class="self">Self</span>::Value) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Signed(v <span class="kw">as </span>i64), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| } |
| }; |
| |
| (nonzero <span class="macro-nonterminal">$primitive</span>:ident <span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if </span><span class="number">0 </span>< v && v <span class="kw">as </span>u64 <= <span class="macro-nonterminal">$primitive::max_value</span>() <span class="kw">as </span>u64 { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(nonzero) = <span class="self">Self</span>::Value::new(v <span class="kw">as </span><span class="macro-nonterminal">$primitive</span>) { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(nonzero); |
| } |
| } |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Signed(v <span class="kw">as </span>i64), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| }; |
| } |
| |
| <span class="macro">macro_rules! </span>uint_to_self { |
| (<span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if </span>v <span class="kw">as </span>u64 <= <span class="self">Self</span>::Value::max_value() <span class="kw">as </span>u64 { |
| <span class="prelude-val">Ok</span>(v <span class="kw">as </span><span class="self">Self</span>::Value) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Unsigned(v <span class="kw">as </span>u64), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| } |
| }; |
| |
| (nonzero <span class="macro-nonterminal">$primitive</span>:ident <span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if </span>v <span class="kw">as </span>u64 <= <span class="macro-nonterminal">$primitive::max_value</span>() <span class="kw">as </span>u64 { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(nonzero) = <span class="self">Self</span>::Value::new(v <span class="kw">as </span><span class="macro-nonterminal">$primitive</span>) { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(nonzero); |
| } |
| } |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Unsigned(v <span class="kw">as </span>u64), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| }; |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| i8, NonZeroI8 cfg(not(no_num_nonzero_signed)), deserialize_i8 |
| <span class="macro">num_self!</span>(i8:visit_i8); |
| <span class="macro">int_to_int!</span>(i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| <span class="macro">uint_to_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| i16, NonZeroI16 cfg(not(no_num_nonzero_signed)), deserialize_i16 |
| <span class="macro">num_self!</span>(i16:visit_i16); |
| <span class="macro">num_as_self!</span>(i8:visit_i8); |
| <span class="macro">int_to_int!</span>(i32:visit_i32 i64:visit_i64); |
| <span class="macro">uint_to_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| i32, NonZeroI32 cfg(not(no_num_nonzero_signed)), deserialize_i32 |
| <span class="macro">num_self!</span>(i32:visit_i32); |
| <span class="macro">num_as_self!</span>(i8:visit_i8 i16:visit_i16); |
| <span class="macro">int_to_int!</span>(i64:visit_i64); |
| <span class="macro">uint_to_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| i64, NonZeroI64 cfg(not(no_num_nonzero_signed)), deserialize_i64 |
| <span class="macro">num_self!</span>(i64:visit_i64); |
| <span class="macro">num_as_self!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32); |
| <span class="macro">uint_to_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| isize, NonZeroIsize cfg(not(no_num_nonzero_signed)), deserialize_i64 |
| <span class="macro">num_as_self!</span>(i8:visit_i8 i16:visit_i16); |
| <span class="macro">int_to_int!</span>(i32:visit_i32 i64:visit_i64); |
| <span class="macro">uint_to_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| u8, NonZeroU8, deserialize_u8 |
| <span class="macro">num_self!</span>(u8:visit_u8); |
| <span class="macro">int_to_uint!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| <span class="macro">uint_to_self!</span>(u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| u16, NonZeroU16, deserialize_u16 |
| <span class="macro">num_self!</span>(u16:visit_u16); |
| <span class="macro">num_as_self!</span>(u8:visit_u8); |
| <span class="macro">int_to_uint!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| <span class="macro">uint_to_self!</span>(u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| u32, NonZeroU32, deserialize_u32 |
| <span class="macro">num_self!</span>(u32:visit_u32); |
| <span class="macro">num_as_self!</span>(u8:visit_u8 u16:visit_u16); |
| <span class="macro">int_to_uint!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| <span class="macro">uint_to_self!</span>(u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| u64, NonZeroU64, deserialize_u64 |
| <span class="macro">num_self!</span>(u64:visit_u64); |
| <span class="macro">num_as_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32); |
| <span class="macro">int_to_uint!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| usize, NonZeroUsize, deserialize_u64 |
| <span class="macro">num_as_self!</span>(u8:visit_u8 u16:visit_u16); |
| <span class="macro">int_to_uint!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| <span class="macro">uint_to_self!</span>(u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| f32, deserialize_f32 |
| <span class="macro">num_self!</span>(f32:visit_f32); |
| <span class="macro">num_as_self!</span>(f64:visit_f64); |
| <span class="macro">num_as_self!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| <span class="macro">num_as_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| f64, deserialize_f64 |
| <span class="macro">num_self!</span>(f64:visit_f64); |
| <span class="macro">num_as_self!</span>(f32:visit_f32); |
| <span class="macro">num_as_self!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| <span class="macro">num_as_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| } |
| |
| <span class="macro">serde_if_integer128! </span>{ |
| <span class="macro">macro_rules! </span>num_128 { |
| (<span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if </span>v <span class="kw">as </span>i128 >= <span class="self">Self</span>::Value::min_value() <span class="kw">as </span>i128 |
| && v <span class="kw">as </span>u128 <= <span class="self">Self</span>::Value::max_value() <span class="kw">as </span>u128 |
| { |
| <span class="prelude-val">Ok</span>(v <span class="kw">as </span><span class="self">Self</span>::Value) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(Error::invalid_value( |
| Unexpected::Other(<span class="macro">stringify!</span>(<span class="macro-nonterminal">$ty</span>)), |
| <span class="kw-2">&</span><span class="self">self</span>, |
| )) |
| } |
| } |
| }; |
| |
| (nonzero <span class="macro-nonterminal">$primitive</span>:ident <span class="macro-nonterminal">$ty</span>:ident : <span class="macro-nonterminal">$visit</span>:ident) => { |
| <span class="kw">fn </span><span class="macro-nonterminal">$visit</span><E>(<span class="self">self</span>, v: <span class="macro-nonterminal">$ty</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">if </span>v <span class="kw">as </span>i128 >= <span class="macro-nonterminal">$primitive::min_value</span>() <span class="kw">as </span>i128 |
| && v <span class="kw">as </span>u128 <= <span class="macro-nonterminal">$primitive::max_value</span>() <span class="kw">as </span>u128 |
| { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(nonzero) = <span class="self">Self</span>::Value::new(v <span class="kw">as </span><span class="macro-nonterminal">$primitive</span>) { |
| <span class="prelude-val">Ok</span>(nonzero) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Unsigned(<span class="number">0</span>), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(Error::invalid_value( |
| Unexpected::Other(<span class="macro">stringify!</span>(<span class="macro-nonterminal">$ty</span>)), |
| <span class="kw-2">&</span><span class="self">self</span>, |
| )) |
| } |
| } |
| }; |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| i128, NonZeroI128 cfg(not(no_num_nonzero_signed)), deserialize_i128 |
| <span class="macro">num_self!</span>(i128:visit_i128); |
| <span class="macro">num_as_self!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| <span class="macro">num_as_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| <span class="macro">num_128!</span>(u128:visit_u128); |
| } |
| |
| <span class="macro">impl_deserialize_num! </span>{ |
| u128, NonZeroU128, deserialize_u128 |
| <span class="macro">num_self!</span>(u128:visit_u128); |
| <span class="macro">num_as_self!</span>(u8:visit_u8 u16:visit_u16 u32:visit_u32 u64:visit_u64); |
| <span class="macro">int_to_uint!</span>(i8:visit_i8 i16:visit_i16 i32:visit_i32 i64:visit_i64); |
| <span class="macro">num_128!</span>(i128:visit_i128); |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">struct </span>CharVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>CharVisitor { |
| <span class="kw">type </span>Value = char; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a character"</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_char<E>(<span class="self">self</span>, v: char) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, v: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>iter = v.chars(); |
| <span class="kw">match </span>(iter.next(), iter.next()) { |
| (<span class="prelude-val">Some</span>(c), <span class="prelude-val">None</span>) => <span class="prelude-val">Ok</span>(c), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Str(v), <span class="kw-2">&</span><span class="self">self</span>)), |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>char { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_char(CharVisitor) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="kw">struct </span>StringVisitor; |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="kw">struct </span>StringInPlaceVisitor<<span class="lifetime">'a</span>>(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>String); |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>StringVisitor { |
| <span class="kw">type </span>Value = String; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a string"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, v: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v.to_owned()) |
| } |
| |
| <span class="kw">fn </span>visit_string<E>(<span class="self">self</span>, v: String) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v) |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, v: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>str::from_utf8(v) { |
| <span class="prelude-val">Ok</span>(s) => <span class="prelude-val">Ok</span>(s.to_owned()), |
| <span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Bytes(v), <span class="kw-2">&</span><span class="self">self</span>)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_byte_buf<E>(<span class="self">self</span>, v: Vec<u8>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>String::from_utf8(v) { |
| <span class="prelude-val">Ok</span>(s) => <span class="prelude-val">Ok</span>(s), |
| <span class="prelude-val">Err</span>(e) => <span class="prelude-val">Err</span>(Error::invalid_value( |
| Unexpected::Bytes(<span class="kw-2">&</span>e.into_bytes()), |
| <span class="kw-2">&</span><span class="self">self</span>, |
| )), |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>StringInPlaceVisitor<<span class="lifetime">'a</span>> { |
| <span class="kw">type </span>Value = (); |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a string"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, v: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="self">self</span>.<span class="number">0</span>.clear(); |
| <span class="self">self</span>.<span class="number">0</span>.push_str(v); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>visit_string<E>(<span class="self">self</span>, v: String) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw-2">*</span><span class="self">self</span>.<span class="number">0 </span>= v; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, v: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>str::from_utf8(v) { |
| <span class="prelude-val">Ok</span>(s) => { |
| <span class="self">self</span>.<span class="number">0</span>.clear(); |
| <span class="self">self</span>.<span class="number">0</span>.push_str(s); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| <span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Bytes(v), <span class="kw-2">&</span><span class="self">self</span>)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_byte_buf<E>(<span class="self">self</span>, v: Vec<u8>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>String::from_utf8(v) { |
| <span class="prelude-val">Ok</span>(s) => { |
| <span class="kw-2">*</span><span class="self">self</span>.<span class="number">0 </span>= s; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| <span class="prelude-val">Err</span>(e) => <span class="prelude-val">Err</span>(Error::invalid_value( |
| Unexpected::Bytes(<span class="kw-2">&</span>e.into_bytes()), |
| <span class="kw-2">&</span><span class="self">self</span>, |
| )), |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>String { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_string(StringVisitor) |
| } |
| |
| <span class="kw">fn </span>deserialize_in_place<D>(deserializer: D, place: <span class="kw-2">&mut </span><span class="self">Self</span>) -> <span class="prelude-ty">Result</span><(), D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_string(StringInPlaceVisitor(place)) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">struct </span>StrVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Visitor<<span class="lifetime">'a</span>> <span class="kw">for </span>StrVisitor { |
| <span class="kw">type </span>Value = <span class="kw-2">&</span><span class="lifetime">'a </span>str; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a borrowed string"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_borrowed_str<E>(<span class="self">self</span>, v: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v) <span class="comment">// so easy |
| </span>} |
| |
| <span class="kw">fn </span>visit_borrowed_bytes<E>(<span class="self">self</span>, v: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| str::from_utf8(v).map_err(|<span class="kw">_</span>| Error::invalid_value(Unexpected::Bytes(v), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>: <span class="lifetime">'a</span>, <span class="lifetime">'a</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>str { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_str(StrVisitor) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">struct </span>BytesVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Visitor<<span class="lifetime">'a</span>> <span class="kw">for </span>BytesVisitor { |
| <span class="kw">type </span>Value = <span class="kw-2">&</span><span class="lifetime">'a </span>[u8]; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a borrowed byte array"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_borrowed_bytes<E>(<span class="self">self</span>, v: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v) |
| } |
| |
| <span class="kw">fn </span>visit_borrowed_str<E>(<span class="self">self</span>, v: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v.as_bytes()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>: <span class="lifetime">'a</span>, <span class="lifetime">'a</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>[u8] { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_bytes(BytesVisitor) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, all(not(no_core_cstr), feature = <span class="string">"alloc"</span>)))] |
| </span><span class="kw">struct </span>CStringVisitor; |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, all(not(no_core_cstr), feature = <span class="string">"alloc"</span>)))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>CStringVisitor { |
| <span class="kw">type </span>Value = CString; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"byte array"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>len = size_hint::cautious(seq.size_hint()); |
| <span class="kw">let </span><span class="kw-2">mut </span>values = Vec::with_capacity(len); |
| |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(value) = <span class="macro">try!</span>(seq.next_element()) { |
| values.push(value); |
| } |
| |
| CString::new(values).map_err(Error::custom) |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, v: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| CString::new(v).map_err(Error::custom) |
| } |
| |
| <span class="kw">fn </span>visit_byte_buf<E>(<span class="self">self</span>, v: Vec<u8>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| CString::new(v).map_err(Error::custom) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, v: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| CString::new(v).map_err(Error::custom) |
| } |
| |
| <span class="kw">fn </span>visit_string<E>(<span class="self">self</span>, v: String) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| CString::new(v).map_err(Error::custom) |
| } |
| } |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, all(not(no_core_cstr), feature = <span class="string">"alloc"</span>)))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>CString { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_byte_buf(CStringVisitor) |
| } |
| } |
| |
| <span class="macro">macro_rules! </span>forwarded_impl { |
| ( |
| $(<span class="attribute">#[doc = <span class="macro-nonterminal">$doc</span>:tt]</span>)* |
| ($(<span class="macro-nonterminal">$id</span>:ident),<span class="kw-2">*</span>), <span class="macro-nonterminal">$ty</span>:ty, <span class="macro-nonterminal">$func</span>:expr |
| ) => { |
| $(<span class="attribute">#[doc = <span class="macro-nonterminal">$doc</span>]</span>)* |
| <span class="kw">impl</span><<span class="lifetime">'de </span>$(, <span class="macro-nonterminal">$id </span>: Deserialize<<span class="lifetime">'de</span>>,)<span class="kw-2">*</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{ |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| Deserialize::deserialize(deserializer).map(<span class="macro-nonterminal">$func</span>) |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(all( |
| any(feature = <span class="string">"std"</span>, all(not(no_core_cstr), feature = <span class="string">"alloc"</span>)), |
| not(no_de_boxed_c_str) |
| ))] |
| </span><span class="macro">forwarded_impl!</span>((), Box<CStr>, CString::into_boxed_c_str); |
| |
| <span class="attribute">#[cfg(not(no_core_reverse))] |
| </span><span class="macro">forwarded_impl!</span>((T), Reverse<T>, Reverse); |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">struct </span>OptionVisitor<T> { |
| marker: PhantomData<T>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>OptionVisitor<T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">type </span>Value = <span class="prelude-ty">Option</span><T>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"option"</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_unit<E>(<span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_none<E>(<span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_some<D>(<span class="self">self</span>, deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| T::deserialize(deserializer).map(<span class="prelude-val">Some</span>) |
| } |
| |
| <span class="kw">fn </span>__private_visit_untagged_option<D>(<span class="self">self</span>, deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, ()> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="prelude-val">Ok</span>(T::deserialize(deserializer).ok()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="prelude-ty">Option</span><T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_option(OptionVisitor { |
| marker: PhantomData, |
| }) |
| } |
| |
| <span class="comment">// The Some variant's repr is opaque, so we can't play cute tricks with its |
| // tag to have deserialize_in_place build the content in place unconditionally. |
| // |
| // FIXME: investigate whether branching on the old value being Some to |
| // deserialize_in_place the value is profitable (probably data-dependent?) |
| </span>} |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">struct </span>PhantomDataVisitor<T: <span class="question-mark">?</span>Sized> { |
| marker: PhantomData<T>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T: <span class="question-mark">?</span>Sized> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>PhantomDataVisitor<T> { |
| <span class="kw">type </span>Value = PhantomData<T>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"unit"</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_unit<E>(<span class="self">self</span>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(PhantomData) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T: <span class="question-mark">?</span>Sized> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>PhantomData<T> { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>visitor = PhantomDataVisitor { |
| marker: PhantomData, |
| }; |
| deserializer.deserialize_unit_struct(<span class="string">"PhantomData"</span>, visitor) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">macro_rules! </span>seq_impl { |
| ( |
| <span class="macro-nonterminal">$ty</span>:ident <T $(: <span class="macro-nonterminal">$tbound1</span>:ident $(+ <span class="macro-nonterminal">$tbound2</span>:ident)<span class="kw-2">*</span>)* $(, <span class="macro-nonterminal">$typaram</span>:ident : <span class="macro-nonterminal">$bound1</span>:ident $(+ <span class="macro-nonterminal">$bound2</span>:ident)<span class="kw-2">*</span>)<span class="kw-2">*</span>>, |
| <span class="macro-nonterminal">$access</span>:ident, |
| <span class="macro-nonterminal">$clear</span>:expr, |
| <span class="macro-nonterminal">$with_capacity</span>:expr, |
| <span class="macro-nonterminal">$reserve</span>:expr, |
| <span class="macro-nonterminal">$insert</span>:expr |
| ) => { |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="macro-nonterminal">$ty</span><T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>> $(+ <span class="macro-nonterminal">$tbound1 </span>$(+ <span class="macro-nonterminal">$tbound2</span>)<span class="kw-2">*</span>)<span class="kw-2">*</span>, |
| $(<span class="macro-nonterminal">$typaram</span>: <span class="macro-nonterminal">$bound1 </span>$(+ <span class="macro-nonterminal">$bound2</span>)<span class="kw-2">*</span>,)* |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>SeqVisitor<T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> { |
| marker: PhantomData<<span class="macro-nonterminal">$ty</span><T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>>>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>SeqVisitor<T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>> $(+ <span class="macro-nonterminal">$tbound1 </span>$(+ <span class="macro-nonterminal">$tbound2</span>)<span class="kw-2">*</span>)<span class="kw-2">*</span>, |
| $(<span class="macro-nonterminal">$typaram</span>: <span class="macro-nonterminal">$bound1 </span>$(+ <span class="macro-nonterminal">$bound2</span>)<span class="kw-2">*</span>,)* |
| { |
| <span class="kw">type </span>Value = <span class="macro-nonterminal">$ty</span><T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a sequence"</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span><span class="macro-nonterminal">$access</span>: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>values = <span class="macro-nonterminal">$with_capacity</span>; |
| |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(value) = <span class="macro">try!</span>(<span class="macro-nonterminal">$access</span>.next_element()) { |
| <span class="macro-nonterminal">$insert</span>(<span class="kw-2">&mut </span>values, value); |
| } |
| |
| <span class="prelude-val">Ok</span>(values) |
| } |
| } |
| |
| <span class="kw">let </span>visitor = SeqVisitor { marker: PhantomData }; |
| deserializer.deserialize_seq(visitor) |
| } |
| |
| <span class="kw">fn </span>deserialize_in_place<D>(deserializer: D, place: <span class="kw-2">&mut </span><span class="self">Self</span>) -> <span class="prelude-ty">Result</span><(), D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>SeqInPlaceVisitor<<span class="lifetime">'a</span>, T: <span class="lifetime">'a </span>$(, <span class="macro-nonterminal">$typaram</span>: <span class="lifetime">'a</span>)<span class="kw-2">*</span>>(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span><span class="macro-nonterminal">$ty</span><T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>>); |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'de</span>, T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>SeqInPlaceVisitor<<span class="lifetime">'a</span>, T $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>> $(+ <span class="macro-nonterminal">$tbound1 </span>$(+ <span class="macro-nonterminal">$tbound2</span>)<span class="kw-2">*</span>)<span class="kw-2">*</span>, |
| $(<span class="macro-nonterminal">$typaram</span>: <span class="macro-nonterminal">$bound1 </span>$(+ <span class="macro-nonterminal">$bound2</span>)<span class="kw-2">*</span>,)* |
| { |
| <span class="kw">type </span>Value = (); |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a sequence"</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_seq<A>(<span class="kw-2">mut </span><span class="self">self</span>, <span class="kw-2">mut </span><span class="macro-nonterminal">$access</span>: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="macro-nonterminal">$clear</span>(<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>); |
| <span class="macro-nonterminal">$reserve</span>(<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>, size_hint::cautious(<span class="macro-nonterminal">$access</span>.size_hint())); |
| |
| <span class="comment">// FIXME: try to overwrite old values here? (Vec, VecDeque, LinkedList) |
| </span><span class="kw">while let </span><span class="prelude-val">Some</span>(value) = <span class="macro">try!</span>(<span class="macro-nonterminal">$access</span>.next_element()) { |
| <span class="macro-nonterminal">$insert</span>(<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>, value); |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| deserializer.deserialize_seq(SeqInPlaceVisitor(place)) |
| } |
| } |
| } |
| } |
| |
| <span class="comment">// Dummy impl of reserve |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="kw">fn </span>nop_reserve<T>(_seq: T, _n: usize) {} |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">seq_impl!</span>( |
| BinaryHeap<T: Ord>, |
| seq, |
| BinaryHeap::clear, |
| BinaryHeap::with_capacity(size_hint::cautious(seq.size_hint())), |
| BinaryHeap::reserve, |
| BinaryHeap::push |
| ); |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">seq_impl!</span>( |
| BTreeSet<T: Eq + Ord>, |
| seq, |
| BTreeSet::clear, |
| BTreeSet::new(), |
| nop_reserve, |
| BTreeSet::insert |
| ); |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">seq_impl!</span>( |
| LinkedList<T>, |
| seq, |
| LinkedList::clear, |
| LinkedList::new(), |
| nop_reserve, |
| LinkedList::push_back |
| ); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">seq_impl!</span>( |
| HashSet<T: Eq + Hash, S: BuildHasher + Default>, |
| seq, |
| HashSet::clear, |
| HashSet::with_capacity_and_hasher(size_hint::cautious(seq.size_hint()), S::default()), |
| HashSet::reserve, |
| HashSet::insert |
| ); |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">seq_impl!</span>( |
| VecDeque<T>, |
| seq, |
| VecDeque::clear, |
| VecDeque::with_capacity(size_hint::cautious(seq.size_hint())), |
| VecDeque::reserve, |
| VecDeque::push_back |
| ); |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, T> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Vec<T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>VecVisitor<T> { |
| marker: PhantomData<T>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>VecVisitor<T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">type </span>Value = Vec<T>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a sequence"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>values = Vec::with_capacity(size_hint::cautious(seq.size_hint())); |
| |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(value) = <span class="macro">try!</span>(seq.next_element()) { |
| values.push(value); |
| } |
| |
| <span class="prelude-val">Ok</span>(values) |
| } |
| } |
| |
| <span class="kw">let </span>visitor = VecVisitor { |
| marker: PhantomData, |
| }; |
| deserializer.deserialize_seq(visitor) |
| } |
| |
| <span class="kw">fn </span>deserialize_in_place<D>(deserializer: D, place: <span class="kw-2">&mut </span><span class="self">Self</span>) -> <span class="prelude-ty">Result</span><(), D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>VecInPlaceVisitor<<span class="lifetime">'a</span>, T: <span class="lifetime">'a</span>>(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>Vec<T>); |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'de</span>, T> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>VecInPlaceVisitor<<span class="lifetime">'a</span>, T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">type </span>Value = (); |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a sequence"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>hint = size_hint::cautious(seq.size_hint()); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(additional) = hint.checked_sub(<span class="self">self</span>.<span class="number">0</span>.len()) { |
| <span class="self">self</span>.<span class="number">0</span>.reserve(additional); |
| } |
| |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..<span class="self">self</span>.<span class="number">0</span>.len() { |
| <span class="kw">let </span>next = { |
| <span class="kw">let </span>next_place = InPlaceSeed(<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>[i]); |
| <span class="macro">try!</span>(seq.next_element_seed(next_place)) |
| }; |
| <span class="kw">if </span>next.is_none() { |
| <span class="self">self</span>.<span class="number">0</span>.truncate(i); |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| } |
| } |
| |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(value) = <span class="macro">try!</span>(seq.next_element()) { |
| <span class="self">self</span>.<span class="number">0</span>.push(value); |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| deserializer.deserialize_seq(VecInPlaceVisitor(place)) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">struct </span>ArrayVisitor<A> { |
| marker: PhantomData<A>, |
| } |
| <span class="kw">struct </span>ArrayInPlaceVisitor<<span class="lifetime">'a</span>, A: <span class="lifetime">'a</span>>(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>A); |
| |
| <span class="kw">impl</span><A> ArrayVisitor<A> { |
| <span class="kw">fn </span>new() -> <span class="self">Self </span>{ |
| ArrayVisitor { |
| marker: PhantomData, |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>ArrayVisitor<[T; <span class="number">0</span>]> { |
| <span class="kw">type </span>Value = [T; <span class="number">0</span>]; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"an empty array"</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw">_</span>: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="prelude-val">Ok</span>([]) |
| } |
| } |
| |
| <span class="comment">// Does not require T: Deserialize<'de>. |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, T> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>[T; <span class="number">0</span>] { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_tuple(<span class="number">0</span>, ArrayVisitor::<[T; <span class="number">0</span>]>::new()) |
| } |
| } |
| |
| <span class="macro">macro_rules! </span>array_impls { |
| ($(<span class="macro-nonterminal">$len</span>:expr => ($(<span class="macro-nonterminal">$n</span>:tt)+))+) => { |
| $( |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>ArrayVisitor<[T; <span class="macro-nonterminal">$len</span>]> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">type </span>Value = [T; <span class="macro-nonterminal">$len</span>]; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="macro">concat!</span>(<span class="string">"an array of length "</span>, <span class="macro-nonterminal">$len</span>)) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="prelude-val">Ok</span>([$( |
| <span class="kw">match </span><span class="macro">try!</span>(seq.next_element()) { |
| <span class="prelude-val">Some</span>(val) => val, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(<span class="macro-nonterminal">$n</span>, <span class="kw-2">&</span><span class="self">self</span>)), |
| } |
| ),+]) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'de</span>, T> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>ArrayInPlaceVisitor<<span class="lifetime">'a</span>, [T; <span class="macro-nonterminal">$len</span>]> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">type </span>Value = (); |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="macro">concat!</span>(<span class="string">"an array of length "</span>, <span class="macro-nonterminal">$len</span>)) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>fail_idx = <span class="prelude-val">None</span>; |
| <span class="kw">for </span>(idx, dest) <span class="kw">in </span><span class="self">self</span>.<span class="number">0</span>[..].iter_mut().enumerate() { |
| <span class="kw">if </span><span class="macro">try!</span>(seq.next_element_seed(InPlaceSeed(dest))).is_none() { |
| fail_idx = <span class="prelude-val">Some</span>(idx); |
| <span class="kw">break</span>; |
| } |
| } |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(idx) = fail_idx { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(idx, <span class="kw-2">&</span><span class="self">self</span>)); |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>[T; <span class="macro-nonterminal">$len</span>] |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_tuple(<span class="macro-nonterminal">$len</span>, ArrayVisitor::<[T; <span class="macro-nonterminal">$len</span>]>::new()) |
| } |
| |
| <span class="kw">fn </span>deserialize_in_place<D>(deserializer: D, place: <span class="kw-2">&mut </span><span class="self">Self</span>) -> <span class="prelude-ty">Result</span><(), D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_tuple(<span class="macro-nonterminal">$len</span>, ArrayInPlaceVisitor(place)) |
| } |
| } |
| )+ |
| } |
| } |
| |
| <span class="macro">array_impls! </span>{ |
| <span class="number">1 </span>=> (<span class="number">0</span>) |
| <span class="number">2 </span>=> (<span class="number">0 1</span>) |
| <span class="number">3 </span>=> (<span class="number">0 1 2</span>) |
| <span class="number">4 </span>=> (<span class="number">0 1 2 3</span>) |
| <span class="number">5 </span>=> (<span class="number">0 1 2 3 4</span>) |
| <span class="number">6 </span>=> (<span class="number">0 1 2 3 4 5</span>) |
| <span class="number">7 </span>=> (<span class="number">0 1 2 3 4 5 6</span>) |
| <span class="number">8 </span>=> (<span class="number">0 1 2 3 4 5 6 7</span>) |
| <span class="number">9 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8</span>) |
| <span class="number">10 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9</span>) |
| <span class="number">11 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10</span>) |
| <span class="number">12 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11</span>) |
| <span class="number">13 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12</span>) |
| <span class="number">14 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13</span>) |
| <span class="number">15 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14</span>) |
| <span class="number">16 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15</span>) |
| <span class="number">17 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16</span>) |
| <span class="number">18 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17</span>) |
| <span class="number">19 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18</span>) |
| <span class="number">20 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19</span>) |
| <span class="number">21 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20</span>) |
| <span class="number">22 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21</span>) |
| <span class="number">23 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22</span>) |
| <span class="number">24 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23</span>) |
| <span class="number">25 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24</span>) |
| <span class="number">26 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25</span>) |
| <span class="number">27 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26</span>) |
| <span class="number">28 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27</span>) |
| <span class="number">29 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28</span>) |
| <span class="number">30 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29</span>) |
| <span class="number">31 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30</span>) |
| <span class="number">32 </span>=> (<span class="number">0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31</span>) |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="macro">macro_rules! </span>tuple_impls { |
| ($(<span class="macro-nonterminal">$len</span>:tt => ($(<span class="macro-nonterminal">$n</span>:tt <span class="macro-nonterminal">$name</span>:ident)+))+) => { |
| $( |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, $(<span class="macro-nonterminal">$name</span>: Deserialize<<span class="lifetime">'de</span>>),+> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>($(<span class="macro-nonterminal">$name</span>,)+) { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>TupleVisitor<$(<span class="macro-nonterminal">$name</span>,)+> { |
| marker: PhantomData<($(<span class="macro-nonterminal">$name</span>,)+)>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, $(<span class="macro-nonterminal">$name</span>: Deserialize<<span class="lifetime">'de</span>>),+> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>TupleVisitor<$(<span class="macro-nonterminal">$name</span>,)+> { |
| <span class="kw">type </span>Value = ($(<span class="macro-nonterminal">$name</span>,)+); |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="macro">concat!</span>(<span class="string">"a tuple of size "</span>, <span class="macro-nonterminal">$len</span>)) |
| } |
| |
| <span class="attribute">#[inline] |
| #[allow(non_snake_case)] |
| </span><span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| $( |
| <span class="kw">let </span><span class="macro-nonterminal">$name </span>= <span class="kw">match </span><span class="macro">try!</span>(seq.next_element()) { |
| <span class="prelude-val">Some</span>(value) => value, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(<span class="macro-nonterminal">$n</span>, <span class="kw-2">&</span><span class="self">self</span>)), |
| }; |
| )+ |
| |
| <span class="prelude-val">Ok</span>(($(<span class="macro-nonterminal">$name</span>,)+)) |
| } |
| } |
| |
| deserializer.deserialize_tuple(<span class="macro-nonterminal">$len</span>, TupleVisitor { marker: PhantomData }) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>deserialize_in_place<D>(deserializer: D, place: <span class="kw-2">&mut </span><span class="self">Self</span>) -> <span class="prelude-ty">Result</span><(), D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>TupleInPlaceVisitor<<span class="lifetime">'a</span>, $(<span class="macro-nonterminal">$name</span>: <span class="lifetime">'a</span>,)+>(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>($(<span class="macro-nonterminal">$name</span>,)+)); |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'de</span>, $(<span class="macro-nonterminal">$name</span>: Deserialize<<span class="lifetime">'de</span>>),+> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>TupleInPlaceVisitor<<span class="lifetime">'a</span>, $(<span class="macro-nonterminal">$name</span>,)+> { |
| <span class="kw">type </span>Value = (); |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="macro">concat!</span>(<span class="string">"a tuple of size "</span>, <span class="macro-nonterminal">$len</span>)) |
| } |
| |
| <span class="attribute">#[inline] |
| #[allow(non_snake_case)] |
| </span><span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| $( |
| <span class="kw">if </span><span class="macro">try!</span>(seq.next_element_seed(InPlaceSeed(<span class="kw-2">&mut </span>(<span class="self">self</span>.<span class="number">0</span>).<span class="macro-nonterminal">$n</span>))).is_none() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(<span class="macro-nonterminal">$n</span>, <span class="kw-2">&</span><span class="self">self</span>)); |
| } |
| )+ |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| deserializer.deserialize_tuple(<span class="macro-nonterminal">$len</span>, TupleInPlaceVisitor(place)) |
| } |
| } |
| )+ |
| } |
| } |
| |
| <span class="macro">tuple_impls! </span>{ |
| <span class="number">1 </span>=> (<span class="number">0 </span>T0) |
| <span class="number">2 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1) |
| <span class="number">3 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2) |
| <span class="number">4 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3) |
| <span class="number">5 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4) |
| <span class="number">6 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5) |
| <span class="number">7 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6) |
| <span class="number">8 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6 <span class="number">7 </span>T7) |
| <span class="number">9 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6 <span class="number">7 </span>T7 <span class="number">8 </span>T8) |
| <span class="number">10 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6 <span class="number">7 </span>T7 <span class="number">8 </span>T8 <span class="number">9 </span>T9) |
| <span class="number">11 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6 <span class="number">7 </span>T7 <span class="number">8 </span>T8 <span class="number">9 </span>T9 <span class="number">10 </span>T10) |
| <span class="number">12 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6 <span class="number">7 </span>T7 <span class="number">8 </span>T8 <span class="number">9 </span>T9 <span class="number">10 </span>T10 <span class="number">11 </span>T11) |
| <span class="number">13 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6 <span class="number">7 </span>T7 <span class="number">8 </span>T8 <span class="number">9 </span>T9 <span class="number">10 </span>T10 <span class="number">11 </span>T11 <span class="number">12 </span>T12) |
| <span class="number">14 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6 <span class="number">7 </span>T7 <span class="number">8 </span>T8 <span class="number">9 </span>T9 <span class="number">10 </span>T10 <span class="number">11 </span>T11 <span class="number">12 </span>T12 <span class="number">13 </span>T13) |
| <span class="number">15 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6 <span class="number">7 </span>T7 <span class="number">8 </span>T8 <span class="number">9 </span>T9 <span class="number">10 </span>T10 <span class="number">11 </span>T11 <span class="number">12 </span>T12 <span class="number">13 </span>T13 <span class="number">14 </span>T14) |
| <span class="number">16 </span>=> (<span class="number">0 </span>T0 <span class="number">1 </span>T1 <span class="number">2 </span>T2 <span class="number">3 </span>T3 <span class="number">4 </span>T4 <span class="number">5 </span>T5 <span class="number">6 </span>T6 <span class="number">7 </span>T7 <span class="number">8 </span>T8 <span class="number">9 </span>T9 <span class="number">10 </span>T10 <span class="number">11 </span>T11 <span class="number">12 </span>T12 <span class="number">13 </span>T13 <span class="number">14 </span>T14 <span class="number">15 </span>T15) |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">macro_rules! </span>map_impl { |
| ( |
| <span class="macro-nonterminal">$ty</span>:ident <K $(: <span class="macro-nonterminal">$kbound1</span>:ident $(+ <span class="macro-nonterminal">$kbound2</span>:ident)<span class="kw-2">*</span>)<span class="kw-2">*</span>, V $(, <span class="macro-nonterminal">$typaram</span>:ident : <span class="macro-nonterminal">$bound1</span>:ident $(+ <span class="macro-nonterminal">$bound2</span>:ident)<span class="kw-2">*</span>)<span class="kw-2">*</span>>, |
| <span class="macro-nonterminal">$access</span>:ident, |
| <span class="macro-nonterminal">$with_capacity</span>:expr |
| ) => { |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, K, V $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="macro-nonterminal">$ty</span><K, V $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> |
| <span class="kw">where |
| </span>K: Deserialize<<span class="lifetime">'de</span>> $(+ <span class="macro-nonterminal">$kbound1 </span>$(+ <span class="macro-nonterminal">$kbound2</span>)<span class="kw-2">*</span>)<span class="kw-2">*</span>, |
| V: Deserialize<<span class="lifetime">'de</span>>, |
| $(<span class="macro-nonterminal">$typaram</span>: <span class="macro-nonterminal">$bound1 </span>$(+ <span class="macro-nonterminal">$bound2</span>)<span class="kw-2">*</span>),* |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>MapVisitor<K, V $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> { |
| marker: PhantomData<<span class="macro-nonterminal">$ty</span><K, V $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>>>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, K, V $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>MapVisitor<K, V $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>> |
| <span class="kw">where |
| </span>K: Deserialize<<span class="lifetime">'de</span>> $(+ <span class="macro-nonterminal">$kbound1 </span>$(+ <span class="macro-nonterminal">$kbound2</span>)<span class="kw-2">*</span>)<span class="kw-2">*</span>, |
| V: Deserialize<<span class="lifetime">'de</span>>, |
| $(<span class="macro-nonterminal">$typaram</span>: <span class="macro-nonterminal">$bound1 </span>$(+ <span class="macro-nonterminal">$bound2</span>)<span class="kw-2">*</span>),* |
| { |
| <span class="kw">type </span>Value = <span class="macro-nonterminal">$ty</span><K, V $(, <span class="macro-nonterminal">$typaram</span>)<span class="kw-2">*</span>>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a map"</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>visit_map<A>(<span class="self">self</span>, <span class="kw-2">mut </span><span class="macro-nonterminal">$access</span>: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: MapAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>values = <span class="macro-nonterminal">$with_capacity</span>; |
| |
| <span class="kw">while let </span><span class="prelude-val">Some</span>((key, value)) = <span class="macro">try!</span>(<span class="macro-nonterminal">$access</span>.next_entry()) { |
| values.insert(key, value); |
| } |
| |
| <span class="prelude-val">Ok</span>(values) |
| } |
| } |
| |
| <span class="kw">let </span>visitor = MapVisitor { marker: PhantomData }; |
| deserializer.deserialize_map(visitor) |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">map_impl!</span>(BTreeMap<K: Ord, V>, map, BTreeMap::new()); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">map_impl!</span>( |
| HashMap<K: Eq + Hash, V, S: BuildHasher + Default>, |
| map, |
| HashMap::with_capacity_and_hasher(size_hint::cautious(map.size_hint()), S::default()) |
| ); |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">macro_rules! </span>parse_ip_impl { |
| (<span class="macro-nonterminal">$expecting</span>:tt <span class="macro-nonterminal">$ty</span>:ty; <span class="macro-nonterminal">$size</span>:tt) => { |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{ |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">if </span>deserializer.is_human_readable() { |
| deserializer.deserialize_str(FromStrVisitor::new(<span class="macro-nonterminal">$expecting</span>)) |
| } <span class="kw">else </span>{ |
| <[u8; <span class="macro-nonterminal">$size</span>]>::deserialize(deserializer).map(<<span class="macro-nonterminal">$ty</span>>::from) |
| } |
| } |
| } |
| }; |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">macro_rules! </span>variant_identifier { |
| ( |
| <span class="macro-nonterminal">$name_kind</span>:ident ($(<span class="macro-nonterminal">$variant</span>:ident; <span class="macro-nonterminal">$bytes</span>:expr; <span class="macro-nonterminal">$index</span>:expr),<span class="kw-2">*</span>) |
| <span class="macro-nonterminal">$expecting_message</span>:expr, |
| <span class="macro-nonterminal">$variants_name</span>:ident |
| ) => { |
| <span class="kw">enum </span><span class="macro-nonterminal">$name_kind </span>{ |
| $(<span class="macro-nonterminal">$variant</span>),* |
| } |
| |
| <span class="kw">static </span><span class="macro-nonterminal">$variants_name</span>: <span class="kw-2">&</span><span class="lifetime">'static </span>[<span class="kw-2">&</span><span class="lifetime">'static </span>str] = <span class="kw-2">&</span>[$(<span class="macro">stringify!</span>(<span class="macro-nonterminal">$variant</span>)),<span class="kw-2">*</span>]; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="macro-nonterminal">$name_kind </span>{ |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>KindVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>KindVisitor { |
| <span class="kw">type </span>Value = <span class="macro-nonterminal">$name_kind</span>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="macro-nonterminal">$expecting_message</span>) |
| } |
| |
| <span class="kw">fn </span>visit_u64<E>(<span class="self">self</span>, value: u64) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| $( |
| <span class="macro-nonterminal">$index </span>=> <span class="prelude-val">Ok</span>(<span class="macro-nonterminal">$name_kind </span>:: <span class="macro-nonterminal">$variant</span>), |
| )* |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Unsigned(value), <span class="kw-2">&</span><span class="self">self</span>),), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| $( |
| <span class="macro">stringify!</span>(<span class="macro-nonterminal">$variant</span>) => <span class="prelude-val">Ok</span>(<span class="macro-nonterminal">$name_kind </span>:: <span class="macro-nonterminal">$variant</span>), |
| )* |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::unknown_variant(value, <span class="macro-nonterminal">$variants_name</span>)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| $( |
| <span class="macro-nonterminal">$bytes </span>=> <span class="prelude-val">Ok</span>(<span class="macro-nonterminal">$name_kind </span>:: <span class="macro-nonterminal">$variant</span>), |
| )* |
| <span class="kw">_ </span>=> { |
| <span class="kw">match </span>str::from_utf8(value) { |
| <span class="prelude-val">Ok</span>(value) => <span class="prelude-val">Err</span>(Error::unknown_variant(value, <span class="macro-nonterminal">$variants_name</span>)), |
| <span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Bytes(value), <span class="kw-2">&</span><span class="self">self</span>)), |
| } |
| } |
| } |
| } |
| } |
| |
| deserializer.deserialize_identifier(KindVisitor) |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">macro_rules! </span>deserialize_enum { |
| ( |
| <span class="macro-nonterminal">$name</span>:ident <span class="macro-nonterminal">$name_kind</span>:ident ($(<span class="macro-nonterminal">$variant</span>:ident; <span class="macro-nonterminal">$bytes</span>:expr; <span class="macro-nonterminal">$index</span>:expr),<span class="kw-2">*</span>) |
| <span class="macro-nonterminal">$expecting_message</span>:expr, |
| <span class="macro-nonterminal">$deserializer</span>:expr |
| ) => { |
| <span class="macro">variant_identifier! </span>{ |
| <span class="macro-nonterminal">$name_kind </span>($(<span class="macro-nonterminal">$variant</span>; <span class="macro-nonterminal">$bytes</span>; <span class="macro-nonterminal">$index</span>),<span class="kw-2">*</span>) |
| <span class="macro-nonterminal">$expecting_message</span>, |
| VARIANTS |
| } |
| |
| <span class="kw">struct </span>EnumVisitor; |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>EnumVisitor { |
| <span class="kw">type </span>Value = <span class="macro-nonterminal">$name</span>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="macro">concat!</span>(<span class="string">"a "</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$name</span>))) |
| } |
| |
| |
| <span class="kw">fn </span>visit_enum<A>(<span class="self">self</span>, data: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: EnumAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">match </span><span class="macro">try!</span>(data.variant()) { |
| $( |
| (<span class="macro-nonterminal">$name_kind </span>:: <span class="macro-nonterminal">$variant</span>, v) => v.newtype_variant().map(<span class="macro-nonterminal">$name </span>:: <span class="macro-nonterminal">$variant</span>), |
| )* |
| } |
| } |
| } |
| <span class="macro-nonterminal">$deserializer</span>.deserialize_enum(<span class="macro">stringify!</span>(<span class="macro-nonterminal">$name</span>), VARIANTS, EnumVisitor) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>net::IpAddr { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">if </span>deserializer.is_human_readable() { |
| deserializer.deserialize_str(FromStrVisitor::new(<span class="string">"IP address"</span>)) |
| } <span class="kw">else </span>{ |
| <span class="kw">use </span>lib::net::IpAddr; |
| <span class="macro">deserialize_enum! </span>{ |
| IpAddr IpAddrKind (V4; <span class="string">b"V4"</span>; <span class="number">0</span>, V6; <span class="string">b"V6"</span>; <span class="number">1</span>) |
| <span class="string">"`V4` or `V6`"</span>, |
| deserializer |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">parse_ip_impl!</span>(<span class="string">"IPv4 address" </span>net::Ipv4Addr; <span class="number">4</span>); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">parse_ip_impl!</span>(<span class="string">"IPv6 address" </span>net::Ipv6Addr; <span class="number">16</span>); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">macro_rules! </span>parse_socket_impl { |
| (<span class="macro-nonterminal">$expecting</span>:tt <span class="macro-nonterminal">$ty</span>:ty, <span class="macro-nonterminal">$new</span>:expr) => { |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{ |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">if </span>deserializer.is_human_readable() { |
| deserializer.deserialize_str(FromStrVisitor::new(<span class="macro-nonterminal">$expecting</span>)) |
| } <span class="kw">else </span>{ |
| <(<span class="kw">_</span>, u16)>::deserialize(deserializer).map(|(ip, port)| <span class="macro-nonterminal">$new</span>(ip, port)) |
| } |
| } |
| } |
| }; |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>net::SocketAddr { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">if </span>deserializer.is_human_readable() { |
| deserializer.deserialize_str(FromStrVisitor::new(<span class="string">"socket address"</span>)) |
| } <span class="kw">else </span>{ |
| <span class="kw">use </span>lib::net::SocketAddr; |
| <span class="macro">deserialize_enum! </span>{ |
| SocketAddr SocketAddrKind (V4; <span class="string">b"V4"</span>; <span class="number">0</span>, V6; <span class="string">b"V6"</span>; <span class="number">1</span>) |
| <span class="string">"`V4` or `V6`"</span>, |
| deserializer |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">parse_socket_impl!</span>(<span class="string">"IPv4 socket address" </span>net::SocketAddrV4, net::SocketAddrV4::new); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">parse_socket_impl!</span>(<span class="string">"IPv6 socket address" </span>net::SocketAddrV6, |ip, port| net::SocketAddrV6::new( |
| ip, port, <span class="number">0</span>, <span class="number">0 |
| </span>)); |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">struct </span>PathVisitor; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'a</span>> Visitor<<span class="lifetime">'a</span>> <span class="kw">for </span>PathVisitor { |
| <span class="kw">type </span>Value = <span class="kw-2">&</span><span class="lifetime">'a </span>Path; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a borrowed path"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_borrowed_str<E>(<span class="self">self</span>, v: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(v.as_ref()) |
| } |
| |
| <span class="kw">fn </span>visit_borrowed_bytes<E>(<span class="self">self</span>, v: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| str::from_utf8(v) |
| .map(AsRef::as_ref) |
| .map_err(|<span class="kw">_</span>| Error::invalid_value(Unexpected::Bytes(v), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>: <span class="lifetime">'a</span>, <span class="lifetime">'a</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>Path { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_str(PathVisitor) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">struct </span>PathBufVisitor; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>PathBufVisitor { |
| <span class="kw">type </span>Value = PathBuf; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"path string"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, v: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(From::from(v)) |
| } |
| |
| <span class="kw">fn </span>visit_string<E>(<span class="self">self</span>, v: String) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="prelude-val">Ok</span>(From::from(v)) |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, v: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| str::from_utf8(v) |
| .map(From::from) |
| .map_err(|<span class="kw">_</span>| Error::invalid_value(Unexpected::Bytes(v), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| |
| <span class="kw">fn </span>visit_byte_buf<E>(<span class="self">self</span>, v: Vec<u8>) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| String::from_utf8(v) |
| .map(From::from) |
| .map_err(|e| Error::invalid_value(Unexpected::Bytes(<span class="kw-2">&</span>e.into_bytes()), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>PathBuf { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_string(PathBufVisitor) |
| } |
| } |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_de_boxed_path)))] |
| </span><span class="macro">forwarded_impl!</span>((), Box<Path>, PathBuf::into_boxed_path); |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| // If this were outside of the serde crate, it would just use: |
| // |
| // #[derive(Deserialize)] |
| // #[serde(variant_identifier)] |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, any(unix, windows)))] |
| </span><span class="macro">variant_identifier! </span>{ |
| OsStringKind (Unix; <span class="string">b"Unix"</span>; <span class="number">0</span>, Windows; <span class="string">b"Windows"</span>; <span class="number">1</span>) |
| <span class="string">"`Unix` or `Windows`"</span>, |
| OSSTR_VARIANTS |
| } |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, any(unix, windows)))] |
| </span><span class="kw">struct </span>OsStringVisitor; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, any(unix, windows)))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>OsStringVisitor { |
| <span class="kw">type </span>Value = OsString; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"os string"</span>) |
| } |
| |
| <span class="attribute">#[cfg(unix)] |
| </span><span class="kw">fn </span>visit_enum<A>(<span class="self">self</span>, data: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: EnumAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">use </span>std::os::unix::ffi::OsStringExt; |
| |
| <span class="kw">match </span><span class="macro">try!</span>(data.variant()) { |
| (OsStringKind::Unix, v) => v.newtype_variant().map(OsString::from_vec), |
| (OsStringKind::Windows, <span class="kw">_</span>) => <span class="prelude-val">Err</span>(Error::custom( |
| <span class="string">"cannot deserialize Windows OS string on Unix"</span>, |
| )), |
| } |
| } |
| |
| <span class="attribute">#[cfg(windows)] |
| </span><span class="kw">fn </span>visit_enum<A>(<span class="self">self</span>, data: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: EnumAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">use </span>std::os::windows::ffi::OsStringExt; |
| |
| <span class="kw">match </span><span class="macro">try!</span>(data.variant()) { |
| (OsStringKind::Windows, v) => v |
| .newtype_variant::<Vec<u16>>() |
| .map(|vec| OsString::from_wide(<span class="kw-2">&</span>vec)), |
| (OsStringKind::Unix, <span class="kw">_</span>) => <span class="prelude-val">Err</span>(Error::custom( |
| <span class="string">"cannot deserialize Unix OS string on Windows"</span>, |
| )), |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, any(unix, windows)))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>OsString { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_enum(<span class="string">"OsString"</span>, OSSTR_VARIANTS, OsStringVisitor) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">forwarded_impl!</span>((T), Box<T>, Box::new); |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">forwarded_impl!</span>((T), Box<[T]>, Vec::into_boxed_slice); |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="macro">forwarded_impl!</span>((), Box<str>, String::into_boxed_str); |
| |
| <span class="attribute">#[cfg(all(no_de_rc_dst, feature = <span class="string">"rc"</span>, any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>)))] |
| </span><span class="macro">forwarded_impl! </span>{ |
| <span class="doccomment">/// This impl requires the [`"rc"`] Cargo feature of Serde. |
| /// |
| /// Deserializing a data structure containing `Arc` will not attempt to |
| /// deduplicate `Arc` references to the same data. Every deserialized `Arc` |
| /// will end up with a strong count of 1. |
| /// |
| /// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc |
| </span>(T), Arc<T>, Arc::new |
| } |
| |
| <span class="attribute">#[cfg(all(no_de_rc_dst, feature = <span class="string">"rc"</span>, any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>)))] |
| </span><span class="macro">forwarded_impl! </span>{ |
| <span class="doccomment">/// This impl requires the [`"rc"`] Cargo feature of Serde. |
| /// |
| /// Deserializing a data structure containing `Rc` will not attempt to |
| /// deduplicate `Rc` references to the same data. Every deserialized `Rc` |
| /// will end up with a strong count of 1. |
| /// |
| /// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc |
| </span>(T), Rc<T>, Rc::new |
| } |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, <span class="lifetime">'a</span>, T: <span class="question-mark">?</span>Sized> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Cow<<span class="lifetime">'a</span>, T> |
| <span class="kw">where |
| </span>T: ToOwned, |
| T::Owned: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| T::Owned::deserialize(deserializer).map(Cow::Owned) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="doccomment">/// This impl requires the [`"rc"`] Cargo feature of Serde. The resulting |
| /// `Weak<T>` has a reference count of 0 and cannot be upgraded. |
| /// |
| /// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"rc"</span>, any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>)))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, T: <span class="question-mark">?</span>Sized> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>RcWeak<T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="macro">try!</span>(<span class="prelude-ty">Option</span>::<T>::deserialize(deserializer)); |
| <span class="prelude-val">Ok</span>(RcWeak::new()) |
| } |
| } |
| |
| <span class="doccomment">/// This impl requires the [`"rc"`] Cargo feature of Serde. The resulting |
| /// `Weak<T>` has a reference count of 0 and cannot be upgraded. |
| /// |
| /// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"rc"</span>, any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>)))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, T: <span class="question-mark">?</span>Sized> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>ArcWeak<T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="macro">try!</span>(<span class="prelude-ty">Option</span>::<T>::deserialize(deserializer)); |
| <span class="prelude-val">Ok</span>(ArcWeak::new()) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(all( |
| not(no_de_rc_dst), |
| feature = <span class="string">"rc"</span>, |
| any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>) |
| ))] |
| </span><span class="macro">macro_rules! </span>box_forwarded_impl { |
| ( |
| $(<span class="attribute">#[doc = <span class="macro-nonterminal">$doc</span>:tt]</span>)* |
| <span class="macro-nonterminal">$t</span>:ident |
| ) => { |
| $(<span class="attribute">#[doc = <span class="macro-nonterminal">$doc</span>]</span>)* |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T: <span class="question-mark">?</span>Sized> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="macro-nonterminal">$t</span><T> |
| <span class="kw">where |
| </span>Box<T>: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| Box::deserialize(deserializer).map(Into::into) |
| } |
| } |
| }; |
| } |
| |
| <span class="attribute">#[cfg(all( |
| not(no_de_rc_dst), |
| feature = <span class="string">"rc"</span>, |
| any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>) |
| ))] |
| </span><span class="macro">box_forwarded_impl! </span>{ |
| <span class="doccomment">/// This impl requires the [`"rc"`] Cargo feature of Serde. |
| /// |
| /// Deserializing a data structure containing `Rc` will not attempt to |
| /// deduplicate `Rc` references to the same data. Every deserialized `Rc` |
| /// will end up with a strong count of 1. |
| /// |
| /// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc |
| </span>Rc |
| } |
| |
| <span class="attribute">#[cfg(all( |
| not(no_de_rc_dst), |
| feature = <span class="string">"rc"</span>, |
| any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>) |
| ))] |
| </span><span class="macro">box_forwarded_impl! </span>{ |
| <span class="doccomment">/// This impl requires the [`"rc"`] Cargo feature of Serde. |
| /// |
| /// Deserializing a data structure containing `Arc` will not attempt to |
| /// deduplicate `Arc` references to the same data. Every deserialized `Arc` |
| /// will end up with a strong count of 1. |
| /// |
| /// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc |
| </span>Arc |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, T> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Cell<T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>> + Copy, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| T::deserialize(deserializer).map(Cell::new) |
| } |
| } |
| |
| <span class="macro">forwarded_impl!</span>((T), RefCell<T>, RefCell::new); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">forwarded_impl!</span>((T), Mutex<T>, Mutex::new); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="macro">forwarded_impl!</span>((T), RwLock<T>, RwLock::new); |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| // This is a cleaned-up version of the impl generated by: |
| // |
| // #[derive(Deserialize)] |
| // #[serde(deny_unknown_fields)] |
| // struct Duration { |
| // secs: u64, |
| // nanos: u32, |
| // } |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, not(no_core_duration)))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Duration { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="comment">// If this were outside of the serde crate, it would just use: |
| // |
| // #[derive(Deserialize)] |
| // #[serde(field_identifier, rename_all = "lowercase")] |
| </span><span class="kw">enum </span>Field { |
| Secs, |
| Nanos, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Field { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>FieldVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>FieldVisitor { |
| <span class="kw">type </span>Value = Field; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"`secs` or `nanos`"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">"secs" </span>=> <span class="prelude-val">Ok</span>(Field::Secs), |
| <span class="string">"nanos" </span>=> <span class="prelude-val">Ok</span>(Field::Nanos), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::unknown_field(value, FIELDS)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">b"secs" </span>=> <span class="prelude-val">Ok</span>(Field::Secs), |
| <span class="string">b"nanos" </span>=> <span class="prelude-val">Ok</span>(Field::Nanos), |
| <span class="kw">_ </span>=> { |
| <span class="kw">let </span>value = ::__private::from_utf8_lossy(value); |
| <span class="prelude-val">Err</span>(Error::unknown_field(<span class="kw-2">&*</span>value, FIELDS)) |
| } |
| } |
| } |
| } |
| |
| deserializer.deserialize_identifier(FieldVisitor) |
| } |
| } |
| |
| <span class="kw">fn </span>check_overflow<E>(secs: u64, nanos: u32) -> <span class="prelude-ty">Result</span><(), E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">static </span>NANOS_PER_SEC: u32 = <span class="number">1_000_000_000</span>; |
| <span class="kw">match </span>secs.checked_add((nanos / NANOS_PER_SEC) <span class="kw">as </span>u64) { |
| <span class="prelude-val">Some</span>(<span class="kw">_</span>) => <span class="prelude-val">Ok</span>(()), |
| <span class="prelude-val">None </span>=> <span class="prelude-val">Err</span>(E::custom(<span class="string">"overflow deserializing Duration"</span>)), |
| } |
| } |
| |
| <span class="kw">struct </span>DurationVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>DurationVisitor { |
| <span class="kw">type </span>Value = Duration; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"struct Duration"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>secs: u64 = <span class="kw">match </span><span class="macro">try!</span>(seq.next_element()) { |
| <span class="prelude-val">Some</span>(value) => value, |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(<span class="number">0</span>, <span class="kw-2">&</span><span class="self">self</span>)); |
| } |
| }; |
| <span class="kw">let </span>nanos: u32 = <span class="kw">match </span><span class="macro">try!</span>(seq.next_element()) { |
| <span class="prelude-val">Some</span>(value) => value, |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(<span class="number">1</span>, <span class="kw-2">&</span><span class="self">self</span>)); |
| } |
| }; |
| <span class="macro">try!</span>(check_overflow(secs, nanos)); |
| <span class="prelude-val">Ok</span>(Duration::new(secs, nanos)) |
| } |
| |
| <span class="kw">fn </span>visit_map<A>(<span class="self">self</span>, <span class="kw-2">mut </span>map: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: MapAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>secs: <span class="prelude-ty">Option</span><u64> = <span class="prelude-val">None</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>nanos: <span class="prelude-ty">Option</span><u32> = <span class="prelude-val">None</span>; |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(key) = <span class="macro">try!</span>(map.next_key()) { |
| <span class="kw">match </span>key { |
| Field::Secs => { |
| <span class="kw">if </span>secs.is_some() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::duplicate_field(<span class="string">"secs"</span>)); |
| } |
| secs = <span class="prelude-val">Some</span>(<span class="macro">try!</span>(map.next_value())); |
| } |
| Field::Nanos => { |
| <span class="kw">if </span>nanos.is_some() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::duplicate_field(<span class="string">"nanos"</span>)); |
| } |
| nanos = <span class="prelude-val">Some</span>(<span class="macro">try!</span>(map.next_value())); |
| } |
| } |
| } |
| <span class="kw">let </span>secs = <span class="kw">match </span>secs { |
| <span class="prelude-val">Some</span>(secs) => secs, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::missing_field(<span class="string">"secs"</span>)), |
| }; |
| <span class="kw">let </span>nanos = <span class="kw">match </span>nanos { |
| <span class="prelude-val">Some</span>(nanos) => nanos, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::missing_field(<span class="string">"nanos"</span>)), |
| }; |
| <span class="macro">try!</span>(check_overflow(secs, nanos)); |
| <span class="prelude-val">Ok</span>(Duration::new(secs, nanos)) |
| } |
| } |
| |
| <span class="kw">const </span>FIELDS: <span class="kw-2">&</span><span class="lifetime">'static </span>[<span class="kw-2">&</span><span class="lifetime">'static </span>str] = <span class="kw-2">&</span>[<span class="string">"secs"</span>, <span class="string">"nanos"</span>]; |
| deserializer.deserialize_struct(<span class="string">"Duration"</span>, FIELDS, DurationVisitor) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>SystemTime { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="comment">// Reuse duration |
| </span><span class="kw">enum </span>Field { |
| Secs, |
| Nanos, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Field { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>FieldVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>FieldVisitor { |
| <span class="kw">type </span>Value = Field; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"`secs_since_epoch` or `nanos_since_epoch`"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">"secs_since_epoch" </span>=> <span class="prelude-val">Ok</span>(Field::Secs), |
| <span class="string">"nanos_since_epoch" </span>=> <span class="prelude-val">Ok</span>(Field::Nanos), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::unknown_field(value, FIELDS)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">b"secs_since_epoch" </span>=> <span class="prelude-val">Ok</span>(Field::Secs), |
| <span class="string">b"nanos_since_epoch" </span>=> <span class="prelude-val">Ok</span>(Field::Nanos), |
| <span class="kw">_ </span>=> { |
| <span class="kw">let </span>value = String::from_utf8_lossy(value); |
| <span class="prelude-val">Err</span>(Error::unknown_field(<span class="kw-2">&</span>value, FIELDS)) |
| } |
| } |
| } |
| } |
| |
| deserializer.deserialize_identifier(FieldVisitor) |
| } |
| } |
| |
| <span class="kw">fn </span>check_overflow<E>(secs: u64, nanos: u32) -> <span class="prelude-ty">Result</span><(), E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">static </span>NANOS_PER_SEC: u32 = <span class="number">1_000_000_000</span>; |
| <span class="kw">match </span>secs.checked_add((nanos / NANOS_PER_SEC) <span class="kw">as </span>u64) { |
| <span class="prelude-val">Some</span>(<span class="kw">_</span>) => <span class="prelude-val">Ok</span>(()), |
| <span class="prelude-val">None </span>=> <span class="prelude-val">Err</span>(E::custom(<span class="string">"overflow deserializing SystemTime epoch offset"</span>)), |
| } |
| } |
| |
| <span class="kw">struct </span>DurationVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>DurationVisitor { |
| <span class="kw">type </span>Value = Duration; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"struct SystemTime"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>secs: u64 = <span class="kw">match </span><span class="macro">try!</span>(seq.next_element()) { |
| <span class="prelude-val">Some</span>(value) => value, |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(<span class="number">0</span>, <span class="kw-2">&</span><span class="self">self</span>)); |
| } |
| }; |
| <span class="kw">let </span>nanos: u32 = <span class="kw">match </span><span class="macro">try!</span>(seq.next_element()) { |
| <span class="prelude-val">Some</span>(value) => value, |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(<span class="number">1</span>, <span class="kw-2">&</span><span class="self">self</span>)); |
| } |
| }; |
| <span class="macro">try!</span>(check_overflow(secs, nanos)); |
| <span class="prelude-val">Ok</span>(Duration::new(secs, nanos)) |
| } |
| |
| <span class="kw">fn </span>visit_map<A>(<span class="self">self</span>, <span class="kw-2">mut </span>map: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: MapAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>secs: <span class="prelude-ty">Option</span><u64> = <span class="prelude-val">None</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>nanos: <span class="prelude-ty">Option</span><u32> = <span class="prelude-val">None</span>; |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(key) = <span class="macro">try!</span>(map.next_key()) { |
| <span class="kw">match </span>key { |
| Field::Secs => { |
| <span class="kw">if </span>secs.is_some() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::duplicate_field( |
| <span class="string">"secs_since_epoch"</span>, |
| )); |
| } |
| secs = <span class="prelude-val">Some</span>(<span class="macro">try!</span>(map.next_value())); |
| } |
| Field::Nanos => { |
| <span class="kw">if </span>nanos.is_some() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::duplicate_field( |
| <span class="string">"nanos_since_epoch"</span>, |
| )); |
| } |
| nanos = <span class="prelude-val">Some</span>(<span class="macro">try!</span>(map.next_value())); |
| } |
| } |
| } |
| <span class="kw">let </span>secs = <span class="kw">match </span>secs { |
| <span class="prelude-val">Some</span>(secs) => secs, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::missing_field(<span class="string">"secs_since_epoch"</span>)), |
| }; |
| <span class="kw">let </span>nanos = <span class="kw">match </span>nanos { |
| <span class="prelude-val">Some</span>(nanos) => nanos, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::missing_field(<span class="string">"nanos_since_epoch"</span>)), |
| }; |
| <span class="macro">try!</span>(check_overflow(secs, nanos)); |
| <span class="prelude-val">Ok</span>(Duration::new(secs, nanos)) |
| } |
| } |
| |
| <span class="kw">const </span>FIELDS: <span class="kw-2">&</span><span class="lifetime">'static </span>[<span class="kw-2">&</span><span class="lifetime">'static </span>str] = <span class="kw-2">&</span>[<span class="string">"secs_since_epoch"</span>, <span class="string">"nanos_since_epoch"</span>]; |
| <span class="kw">let </span>duration = <span class="macro">try!</span>(deserializer.deserialize_struct(<span class="string">"SystemTime"</span>, FIELDS, DurationVisitor)); |
| <span class="attribute">#[cfg(not(no_systemtime_checked_add))] |
| </span><span class="kw">let </span>ret = UNIX_EPOCH |
| .checked_add(duration) |
| .ok_or_else(|| D::Error::custom(<span class="string">"overflow deserializing SystemTime"</span>)); |
| <span class="attribute">#[cfg(no_systemtime_checked_add)] |
| </span><span class="kw">let </span>ret = <span class="prelude-val">Ok</span>(UNIX_EPOCH + duration); |
| ret |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| // Similar to: |
| // |
| // #[derive(Deserialize)] |
| // #[serde(deny_unknown_fields)] |
| // struct Range { |
| // start: u64, |
| // end: u32, |
| // } |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, Idx> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Range<Idx> |
| <span class="kw">where |
| </span>Idx: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>(start, end) = <span class="macro">try!</span>(deserializer.deserialize_struct( |
| <span class="string">"Range"</span>, |
| range::FIELDS, |
| range::RangeVisitor { |
| expecting: <span class="string">"struct Range"</span>, |
| phantom: PhantomData, |
| }, |
| )); |
| <span class="prelude-val">Ok</span>(start..end) |
| } |
| } |
| |
| <span class="attribute">#[cfg(not(no_range_inclusive))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, Idx> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>RangeInclusive<Idx> |
| <span class="kw">where |
| </span>Idx: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>(start, end) = <span class="macro">try!</span>(deserializer.deserialize_struct( |
| <span class="string">"RangeInclusive"</span>, |
| range::FIELDS, |
| range::RangeVisitor { |
| expecting: <span class="string">"struct RangeInclusive"</span>, |
| phantom: PhantomData, |
| }, |
| )); |
| <span class="prelude-val">Ok</span>(RangeInclusive::new(start, end)) |
| } |
| } |
| |
| <span class="kw">mod </span>range { |
| <span class="kw">use </span>lib::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span>de::{Deserialize, Deserializer, Error, MapAccess, SeqAccess, Visitor}; |
| |
| <span class="kw">pub const </span>FIELDS: <span class="kw-2">&</span><span class="lifetime">'static </span>[<span class="kw-2">&</span><span class="lifetime">'static </span>str] = <span class="kw-2">&</span>[<span class="string">"start"</span>, <span class="string">"end"</span>]; |
| |
| <span class="comment">// If this were outside of the serde crate, it would just use: |
| // |
| // #[derive(Deserialize)] |
| // #[serde(field_identifier, rename_all = "lowercase")] |
| </span><span class="kw">enum </span>Field { |
| Start, |
| End, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Field { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>FieldVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>FieldVisitor { |
| <span class="kw">type </span>Value = Field; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"`start` or `end`"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">"start" </span>=> <span class="prelude-val">Ok</span>(Field::Start), |
| <span class="string">"end" </span>=> <span class="prelude-val">Ok</span>(Field::End), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::unknown_field(value, FIELDS)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">b"start" </span>=> <span class="prelude-val">Ok</span>(Field::Start), |
| <span class="string">b"end" </span>=> <span class="prelude-val">Ok</span>(Field::End), |
| <span class="kw">_ </span>=> { |
| <span class="kw">let </span>value = ::__private::from_utf8_lossy(value); |
| <span class="prelude-val">Err</span>(Error::unknown_field(<span class="kw-2">&*</span>value, FIELDS)) |
| } |
| } |
| } |
| } |
| |
| deserializer.deserialize_identifier(FieldVisitor) |
| } |
| } |
| |
| <span class="kw">pub struct </span>RangeVisitor<Idx> { |
| <span class="kw">pub </span>expecting: <span class="kw-2">&</span><span class="lifetime">'static </span>str, |
| <span class="kw">pub </span>phantom: PhantomData<Idx>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, Idx> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>RangeVisitor<Idx> |
| <span class="kw">where |
| </span>Idx: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">type </span>Value = (Idx, Idx); |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="self">self</span>.expecting) |
| } |
| |
| <span class="kw">fn </span>visit_seq<A>(<span class="self">self</span>, <span class="kw-2">mut </span>seq: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: SeqAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>start: Idx = <span class="kw">match </span><span class="macro">try!</span>(seq.next_element()) { |
| <span class="prelude-val">Some</span>(value) => value, |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(<span class="number">0</span>, <span class="kw-2">&</span><span class="self">self</span>)); |
| } |
| }; |
| <span class="kw">let </span>end: Idx = <span class="kw">match </span><span class="macro">try!</span>(seq.next_element()) { |
| <span class="prelude-val">Some</span>(value) => value, |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(Error::invalid_length(<span class="number">1</span>, <span class="kw-2">&</span><span class="self">self</span>)); |
| } |
| }; |
| <span class="prelude-val">Ok</span>((start, end)) |
| } |
| |
| <span class="kw">fn </span>visit_map<A>(<span class="self">self</span>, <span class="kw-2">mut </span>map: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: MapAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>start: <span class="prelude-ty">Option</span><Idx> = <span class="prelude-val">None</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>end: <span class="prelude-ty">Option</span><Idx> = <span class="prelude-val">None</span>; |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(key) = <span class="macro">try!</span>(map.next_key()) { |
| <span class="kw">match </span>key { |
| Field::Start => { |
| <span class="kw">if </span>start.is_some() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::duplicate_field(<span class="string">"start"</span>)); |
| } |
| start = <span class="prelude-val">Some</span>(<span class="macro">try!</span>(map.next_value())); |
| } |
| Field::End => { |
| <span class="kw">if </span>end.is_some() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::duplicate_field(<span class="string">"end"</span>)); |
| } |
| end = <span class="prelude-val">Some</span>(<span class="macro">try!</span>(map.next_value())); |
| } |
| } |
| } |
| <span class="kw">let </span>start = <span class="kw">match </span>start { |
| <span class="prelude-val">Some</span>(start) => start, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::missing_field(<span class="string">"start"</span>)), |
| }; |
| <span class="kw">let </span>end = <span class="kw">match </span>end { |
| <span class="prelude-val">Some</span>(end) => end, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(<A::Error <span class="kw">as </span>Error>::missing_field(<span class="string">"end"</span>)), |
| }; |
| <span class="prelude-val">Ok</span>((start, end)) |
| } |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(any(not(no_ops_bound), all(feature = <span class="string">"std"</span>, not(no_collections_bound))))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, T> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Bound<T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">enum </span>Field { |
| Unbounded, |
| Included, |
| Excluded, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Field { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>FieldVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>FieldVisitor { |
| <span class="kw">type </span>Value = Field; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"`Unbounded`, `Included` or `Excluded`"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_u64<E>(<span class="self">self</span>, value: u64) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="number">0 </span>=> <span class="prelude-val">Ok</span>(Field::Unbounded), |
| <span class="number">1 </span>=> <span class="prelude-val">Ok</span>(Field::Included), |
| <span class="number">2 </span>=> <span class="prelude-val">Ok</span>(Field::Excluded), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Unsigned(value), <span class="kw-2">&</span><span class="self">self</span>)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">"Unbounded" </span>=> <span class="prelude-val">Ok</span>(Field::Unbounded), |
| <span class="string">"Included" </span>=> <span class="prelude-val">Ok</span>(Field::Included), |
| <span class="string">"Excluded" </span>=> <span class="prelude-val">Ok</span>(Field::Excluded), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::unknown_variant(value, VARIANTS)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">b"Unbounded" </span>=> <span class="prelude-val">Ok</span>(Field::Unbounded), |
| <span class="string">b"Included" </span>=> <span class="prelude-val">Ok</span>(Field::Included), |
| <span class="string">b"Excluded" </span>=> <span class="prelude-val">Ok</span>(Field::Excluded), |
| <span class="kw">_ </span>=> <span class="kw">match </span>str::from_utf8(value) { |
| <span class="prelude-val">Ok</span>(value) => <span class="prelude-val">Err</span>(Error::unknown_variant(value, VARIANTS)), |
| <span class="prelude-val">Err</span>(<span class="kw">_</span>) => { |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Bytes(value), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| }, |
| } |
| } |
| } |
| |
| deserializer.deserialize_identifier(FieldVisitor) |
| } |
| } |
| |
| <span class="kw">struct </span>BoundVisitor<T>(PhantomData<Bound<T>>); |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>BoundVisitor<T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">type </span>Value = Bound<T>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"enum Bound"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_enum<A>(<span class="self">self</span>, data: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: EnumAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">match </span><span class="macro">try!</span>(data.variant()) { |
| (Field::Unbounded, v) => v.unit_variant().map(|()| Bound::Unbounded), |
| (Field::Included, v) => v.newtype_variant().map(Bound::Included), |
| (Field::Excluded, v) => v.newtype_variant().map(Bound::Excluded), |
| } |
| } |
| } |
| |
| <span class="kw">const </span>VARIANTS: <span class="kw-2">&</span><span class="lifetime">'static </span>[<span class="kw-2">&</span><span class="lifetime">'static </span>str] = <span class="kw-2">&</span>[<span class="string">"Unbounded"</span>, <span class="string">"Included"</span>, <span class="string">"Excluded"</span>]; |
| |
| deserializer.deserialize_enum(<span class="string">"Bound"</span>, VARIANTS, BoundVisitor(PhantomData)) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, T, E> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="prelude-ty">Result</span><T, E> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| E: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="comment">// If this were outside of the serde crate, it would just use: |
| // |
| // #[derive(Deserialize)] |
| // #[serde(variant_identifier)] |
| </span><span class="kw">enum </span>Field { |
| <span class="prelude-val">Ok</span>, |
| <span class="prelude-val">Err</span>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Field { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>FieldVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>FieldVisitor { |
| <span class="kw">type </span>Value = Field; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"`Ok` or `Err`"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_u64<E>(<span class="self">self</span>, value: u64) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="number">0 </span>=> <span class="prelude-val">Ok</span>(Field::Ok), |
| <span class="number">1 </span>=> <span class="prelude-val">Ok</span>(Field::Err), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Unsigned(value), <span class="kw-2">&</span><span class="self">self</span>)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">"Ok" </span>=> <span class="prelude-val">Ok</span>(Field::Ok), |
| <span class="string">"Err" </span>=> <span class="prelude-val">Ok</span>(Field::Err), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(Error::unknown_variant(value, VARIANTS)), |
| } |
| } |
| |
| <span class="kw">fn </span>visit_bytes<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| <span class="kw">match </span>value { |
| <span class="string">b"Ok" </span>=> <span class="prelude-val">Ok</span>(Field::Ok), |
| <span class="string">b"Err" </span>=> <span class="prelude-val">Ok</span>(Field::Err), |
| <span class="kw">_ </span>=> <span class="kw">match </span>str::from_utf8(value) { |
| <span class="prelude-val">Ok</span>(value) => <span class="prelude-val">Err</span>(Error::unknown_variant(value, VARIANTS)), |
| <span class="prelude-val">Err</span>(<span class="kw">_</span>) => { |
| <span class="prelude-val">Err</span>(Error::invalid_value(Unexpected::Bytes(value), <span class="kw-2">&</span><span class="self">self</span>)) |
| } |
| }, |
| } |
| } |
| } |
| |
| deserializer.deserialize_identifier(FieldVisitor) |
| } |
| } |
| |
| <span class="kw">struct </span>ResultVisitor<T, E>(PhantomData<<span class="prelude-ty">Result</span><T, E>>); |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>, T, E> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>ResultVisitor<T, E> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| E: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">type </span>Value = <span class="prelude-ty">Result</span><T, E>; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"enum Result"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_enum<A>(<span class="self">self</span>, data: A) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, A::Error> |
| <span class="kw">where |
| </span>A: EnumAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">match </span><span class="macro">try!</span>(data.variant()) { |
| (Field::Ok, v) => v.newtype_variant().map(<span class="prelude-val">Ok</span>), |
| (Field::Err, v) => v.newtype_variant().map(<span class="prelude-val">Err</span>), |
| } |
| } |
| } |
| |
| <span class="kw">const </span>VARIANTS: <span class="kw-2">&</span><span class="lifetime">'static </span>[<span class="kw-2">&</span><span class="lifetime">'static </span>str] = <span class="kw-2">&</span>[<span class="string">"Ok"</span>, <span class="string">"Err"</span>]; |
| |
| deserializer.deserialize_enum(<span class="string">"Result"</span>, VARIANTS, ResultVisitor(PhantomData)) |
| } |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, T> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Wrapping<T> |
| <span class="kw">where |
| </span>T: Deserialize<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| Deserialize::deserialize(deserializer).map(Wrapping) |
| } |
| } |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_std_atomic)))] |
| </span><span class="macro">macro_rules! </span>atomic_impl { |
| ($(<span class="macro-nonterminal">$ty</span>:ident <span class="macro-nonterminal">$size</span>:expr)<span class="kw-2">*</span>) => { |
| $( |
| <span class="attribute">#[cfg(any(no_target_has_atomic, target_has_atomic = <span class="macro-nonterminal">$size</span>))] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>> Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{ |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: Deserializer<<span class="lifetime">'de</span>>, |
| { |
| Deserialize::deserialize(deserializer).map(<span class="self">Self</span>::new) |
| } |
| } |
| )* |
| }; |
| } |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_std_atomic)))] |
| </span><span class="macro">atomic_impl! </span>{ |
| AtomicBool <span class="string">"8" |
| </span>AtomicI8 <span class="string">"8" |
| </span>AtomicI16 <span class="string">"16" |
| </span>AtomicI32 <span class="string">"32" |
| </span>AtomicIsize <span class="string">"ptr" |
| </span>AtomicU8 <span class="string">"8" |
| </span>AtomicU16 <span class="string">"16" |
| </span>AtomicU32 <span class="string">"32" |
| </span>AtomicUsize <span class="string">"ptr" |
| </span>} |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_std_atomic64)))] |
| </span><span class="macro">atomic_impl! </span>{ |
| AtomicI64 <span class="string">"64" |
| </span>AtomicU64 <span class="string">"64" |
| </span>} |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">struct </span>FromStrVisitor<T> { |
| expecting: <span class="kw-2">&</span><span class="lifetime">'static </span>str, |
| ty: PhantomData<T>, |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><T> FromStrVisitor<T> { |
| <span class="kw">fn </span>new(expecting: <span class="kw-2">&</span><span class="lifetime">'static </span>str) -> <span class="self">Self </span>{ |
| FromStrVisitor { |
| expecting: expecting, |
| ty: PhantomData, |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">impl</span><<span class="lifetime">'de</span>, T> Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>FromStrVisitor<T> |
| <span class="kw">where |
| </span>T: str::FromStr, |
| T::Err: fmt::Display, |
| { |
| <span class="kw">type </span>Value = T; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="self">self</span>.expecting) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: Error, |
| { |
| s.parse().map_err(Error::custom) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="serde" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |