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rust/src/rustbook/error.rs

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"The Rust Programming Language" This pulls all of our long-form documentation into a single document, nicknamed "the book" and formally titled "The Rust Programming Language." A few things motivated this change: * People knew of The Guide, but not the individual Guides. This merges them together, helping discoverability. * You can get all of Rust's longform documentation in one place, which is nice. * We now have rustbook in-tree, which can generate this kind of documentation. While its style is basic, the general idea is much better: a table of contents on the left-hand side. * Rather than a almost 10,000-line guide.md, there are now smaller files per section.
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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Error handling utilities. WIP.
std: Deprecate std::old_io::fs This commit deprecates the majority of std::old_io::fs in favor of std::fs and its new functionality. Some functions remain non-deprecated but are now behind a feature gate called `old_fs`. These functions will be deprecated once suitable replacements have been implemented. The compiler has been migrated to new `std::fs` and `std::path` APIs where appropriate as part of this change.
2015-02-26 23:00:43 -06:00
use std::error::Error;
"The Rust Programming Language" This pulls all of our long-form documentation into a single document, nicknamed "the book" and formally titled "The Rust Programming Language." A few things motivated this change: * People knew of The Guide, but not the individual Guides. This merges them together, helping discoverability. * You can get all of Rust's longform documentation in one place, which is nice. * We now have rustbook in-tree, which can generate this kind of documentation. While its style is basic, the general idea is much better: a table of contents on the left-hand side. * Rather than a almost 10,000-line guide.md, there are now smaller files per section.
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use std::fmt;
pub type CliError = Box<Error + 'static>;
pub type CliResult<T> = Result<T, CliError>;
pub type CommandError = Box<Error + 'static>;
pub type CommandResult<T> = Result<T, CommandError>;
std: Deprecate std::old_io::fs This commit deprecates the majority of std::old_io::fs in favor of std::fs and its new functionality. Some functions remain non-deprecated but are now behind a feature gate called `old_fs`. These functions will be deprecated once suitable replacements have been implemented. The compiler has been migrated to new `std::fs` and `std::path` APIs where appropriate as part of this change.
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pub fn err(s: &str) -> CliError {
Stabilize the Error trait This small commit stabilizes the `Error` trait as-is, except that `Send` and `Debug` are added as constraints. The `Send` constraint is because most uses of `Error` will be for trait objects, and by default we would like these objects to be transferrable between threads. The `Debug` constraint is to ensure that e.g. `Box<Error>` is `Debug`, and because types that implement `Display` should certainly implement `Debug` in any case. In the near future we expect to add `Any`-like downcasting features to `Error`, but this is waiting on some additional mechanisms (`Reflect`). It will be added before 1.0 via default methods. [breaking-change]
2015-03-19 18:37:34 -05:00
#[derive(Debug)]
std: Deprecate std::old_io::fs This commit deprecates the majority of std::old_io::fs in favor of std::fs and its new functionality. Some functions remain non-deprecated but are now behind a feature gate called `old_fs`. These functions will be deprecated once suitable replacements have been implemented. The compiler has been migrated to new `std::fs` and `std::path` APIs where appropriate as part of this change.
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struct E(String);
"The Rust Programming Language" This pulls all of our long-form documentation into a single document, nicknamed "the book" and formally titled "The Rust Programming Language." A few things motivated this change: * People knew of The Guide, but not the individual Guides. This merges them together, helping discoverability. * You can get all of Rust's longform documentation in one place, which is nice. * We now have rustbook in-tree, which can generate this kind of documentation. While its style is basic, the general idea is much better: a table of contents on the left-hand side. * Rather than a almost 10,000-line guide.md, there are now smaller files per section.
2014-12-02 08:20:48 -06:00
std: Deprecate std::old_io::fs This commit deprecates the majority of std::old_io::fs in favor of std::fs and its new functionality. Some functions remain non-deprecated but are now behind a feature gate called `old_fs`. These functions will be deprecated once suitable replacements have been implemented. The compiler has been migrated to new `std::fs` and `std::path` APIs where appropriate as part of this change.
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impl Error for E {
fn description(&self) -> &str { &self.0 }
"The Rust Programming Language" This pulls all of our long-form documentation into a single document, nicknamed "the book" and formally titled "The Rust Programming Language." A few things motivated this change: * People knew of The Guide, but not the individual Guides. This merges them together, helping discoverability. * You can get all of Rust's longform documentation in one place, which is nice. * We now have rustbook in-tree, which can generate this kind of documentation. While its style is basic, the general idea is much better: a table of contents on the left-hand side. * Rather than a almost 10,000-line guide.md, there are now smaller files per section.
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}
std: Deprecate std::old_io::fs This commit deprecates the majority of std::old_io::fs in favor of std::fs and its new functionality. Some functions remain non-deprecated but are now behind a feature gate called `old_fs`. These functions will be deprecated once suitable replacements have been implemented. The compiler has been migrated to new `std::fs` and `std::path` APIs where appropriate as part of this change.
2015-02-26 23:00:43 -06:00
impl fmt::Display for E {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.0.fmt(f)
}
"The Rust Programming Language" This pulls all of our long-form documentation into a single document, nicknamed "the book" and formally titled "The Rust Programming Language." A few things motivated this change: * People knew of The Guide, but not the individual Guides. This merges them together, helping discoverability. * You can get all of Rust's longform documentation in one place, which is nice. * We now have rustbook in-tree, which can generate this kind of documentation. While its style is basic, the general idea is much better: a table of contents on the left-hand side. * Rather than a almost 10,000-line guide.md, there are now smaller files per section.
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}
std: Deprecate std::old_io::fs This commit deprecates the majority of std::old_io::fs in favor of std::fs and its new functionality. Some functions remain non-deprecated but are now behind a feature gate called `old_fs`. These functions will be deprecated once suitable replacements have been implemented. The compiler has been migrated to new `std::fs` and `std::path` APIs where appropriate as part of this change.
2015-02-26 23:00:43 -06:00
Box::new(E(s.to_string()))
"The Rust Programming Language" This pulls all of our long-form documentation into a single document, nicknamed "the book" and formally titled "The Rust Programming Language." A few things motivated this change: * People knew of The Guide, but not the individual Guides. This merges them together, helping discoverability. * You can get all of Rust's longform documentation in one place, which is nice. * We now have rustbook in-tree, which can generate this kind of documentation. While its style is basic, the general idea is much better: a table of contents on the left-hand side. * Rather than a almost 10,000-line guide.md, there are now smaller files per section.
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}
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