| <!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 `common/rusty_leveldb_sgx/src/error.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>error.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="../../rusty_leveldb/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="../../rusty_leveldb/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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| </pre><pre class="rust"><code><span class="kw">use </span>std::convert::From; |
| <span class="kw">use </span>std::error::Error; |
| <span class="kw">use </span>std::fmt::{<span class="self">self</span>, Display, Formatter}; |
| <span class="kw">use </span>std::io; |
| <span class="kw">use </span>std::result; |
| <span class="kw">use </span>std::sync; |
| |
| <span class="kw">use </span>libc::c_int; |
| <span class="kw">use </span>snap; |
| |
| <span class="doccomment">/// StatusCode describes various failure modes of database operations. |
| </span><span class="attribute">#[derive(Clone, Debug, PartialEq)] |
| #[allow(dead_code)] |
| </span><span class="kw">pub enum </span>StatusCode { |
| OK, |
| |
| AlreadyExists, |
| Corruption, |
| CompressionError, |
| IOError, |
| InvalidArgument, |
| InvalidData, |
| LockError, |
| NotFound, |
| NotSupported, |
| PermissionDenied, |
| Unknown, |
| Errno(c_int), |
| } |
| |
| <span class="doccomment">/// Status encapsulates a `StatusCode` and an error message. It can be displayed, and also |
| /// implements `Error`. |
| </span><span class="attribute">#[derive(Clone, Debug, PartialEq)] |
| </span><span class="kw">pub struct </span>Status { |
| <span class="kw">pub </span>code: StatusCode, |
| <span class="kw">pub </span>err: String, |
| } |
| |
| <span class="kw">impl </span>Default <span class="kw">for </span>Status { |
| <span class="kw">fn </span>default() -> Status { |
| Status { |
| code: StatusCode::OK, |
| err: String::new(), |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>Display <span class="kw">for </span>Status { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, fmt: <span class="kw-2">&mut </span>Formatter) -> result::Result<(), fmt::Error> { |
| fmt.write_str(<span class="kw-2">&</span><span class="self">self</span>.err) |
| } |
| } |
| |
| <span class="kw">impl </span>Error <span class="kw">for </span>Status { |
| <span class="kw">fn </span>description(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="kw-2">&</span><span class="self">self</span>.err |
| } |
| } |
| |
| <span class="kw">impl </span>Status { |
| <span class="kw">pub fn </span>new(code: StatusCode, msg: <span class="kw-2">&</span>str) -> Status { |
| <span class="kw">let </span>err; |
| <span class="kw">if </span>msg.is_empty() { |
| err = <span class="macro">format!</span>(<span class="string">"{:?}"</span>, code) |
| } <span class="kw">else </span>{ |
| err = <span class="macro">format!</span>(<span class="string">"{:?}: {}"</span>, code, msg); |
| } |
| <span class="kw">return </span>Status { code, err }; |
| } |
| |
| <span class="kw">pub fn </span>annotate<S: AsRef<str>>(<span class="self">self</span>, msg: S) -> Status { |
| Status { |
| code: <span class="self">self</span>.code, |
| err: <span class="macro">format!</span>(<span class="string">"{}: {}"</span>, msg.as_ref(), <span class="self">self</span>.err), |
| } |
| } |
| } |
| |
| <span class="doccomment">/// LevelDB's result type |
| </span><span class="kw">pub type </span><span class="prelude-ty">Result</span><T> = result::Result<T, Status>; |
| |
| <span class="doccomment">/// err returns a new Status wrapped in a Result. |
| </span><span class="kw">pub fn </span>err<T>(code: StatusCode, msg: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><T> { |
| <span class="prelude-val">Err</span>(Status::new(code, msg)) |
| } |
| |
| <span class="kw">impl </span>From<io::Error> <span class="kw">for </span>Status { |
| <span class="kw">fn </span>from(e: io::Error) -> Status { |
| <span class="kw">let </span>c = <span class="kw">match </span>e.kind() { |
| io::ErrorKind::NotFound => StatusCode::NotFound, |
| io::ErrorKind::InvalidData => StatusCode::Corruption, |
| io::ErrorKind::InvalidInput => StatusCode::InvalidArgument, |
| io::ErrorKind::PermissionDenied => StatusCode::PermissionDenied, |
| <span class="kw">_ </span>=> StatusCode::IOError, |
| }; |
| |
| Status::new(c, <span class="kw-2">&</span>e.to_string()) |
| } |
| } |
| |
| <span class="kw">impl</span><T> From<sync::PoisonError<T>> <span class="kw">for </span>Status { |
| <span class="kw">fn </span>from(<span class="kw">_</span>: sync::PoisonError<T>) -> Status { |
| Status::new(StatusCode::LockError, <span class="string">"lock poisoned"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>From<snap::Error> <span class="kw">for </span>Status { |
| <span class="kw">fn </span>from(e: snap::Error) -> Status { |
| Status { |
| code: StatusCode::CompressionError, |
| err: e.to_string(), |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"enclave_unit_test"</span>)] |
| </span><span class="kw">pub mod </span>tests { |
| <span class="kw">use super</span>::{Status, StatusCode}; |
| <span class="kw">use </span>teaclave_test_utils::<span class="kw-2">*</span>; |
| |
| <span class="kw">pub fn </span>run_tests() -> bool { |
| <span class="macro">run_tests!</span>(test_status_to_string,) |
| } |
| |
| <span class="kw">fn </span>test_status_to_string() { |
| <span class="kw">let </span>s = Status::new(StatusCode::InvalidData, <span class="string">"Invalid data!"</span>); |
| <span class="macro">assert_eq!</span>(<span class="string">"InvalidData: Invalid data!"</span>, s.to_string()); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="rusty_leveldb" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |