try_or-0.2.0/.gitignore00006440000000000000000000000007127573406620013216 0ustar0000000000000000target try_or-0.2.0/.travis.yml00006440000000000000000000000767127573367630013363 0ustar0000000000000000language: rust rust: - stable - beta - nightly matrix: allow_failures: - rust: nightly after_success: | [ $TRAVIS_BRANCH = master ] && [ $TRAVIS_PULL_REQUEST = false ] && cargo doc && echo "" > target/doc/index.html && sudo pip install ghp-import && ghp-import -n target/doc && git push -fq https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git gh-pages try_or-0.2.0/Cargo.toml00006440000000000000000000001502127600357620013153 0ustar0000000000000000# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO # # When uploading crates to the registry Cargo will automatically # "normalize" Cargo.toml files for maximal compatibility # with all versions of Cargo and also rewrite `path` dependencies # to registry (e.g., crates.io) dependencies # # If you believe there's an error in this file please file an # issue against the rust-lang/cargo repository. If you're # editing this file be aware that the upstream Cargo.toml # will likely look very different (and much more reasonable) [package] name = "try_or" version = "0.2.0" authors = ["Georg Echterling "] description = "Contains helper macros for unwrapping Results and Options." documentation = "http://mixthos.github.com/try_or" readme = "README.md" license = "MIT" repository = "https://github.com/Mixthos/try_or" try_or-0.2.0/Cargo.toml.orig00006440000000000000000000000467127600357620014123 0ustar0000000000000000[package] name = "try_or" version = "0.2.0" authors = ["Georg Echterling "] description = "Contains helper macros for unwrapping Results and Options." readme = "README.md" license = "MIT" documentation = "http://mixthos.github.com/try_or" repository = "https://github.com/Mixthos/try_or" try_or-0.2.0/LICENSE00006440000000000000000000002066127600352670012236 0ustar0000000000000000Copyright (c) 2016 Georg Echterling Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. try_or-0.2.0/README.md00006440000000000000000000002411127600356000012471 0ustar0000000000000000# try_or [![Build Status](https://travis-ci.org/Mixthos/try_or.svg?branch=master)](https://travis-ci.org/Mixthos/try_or) Contains the macros `try_or!`, `try_or_else!`, `try_opt_or!` and `try_opt_or_else!`. These are helper macros for unwrapping a `Result` or an `Option` while returning early for `Err` and `None` values. The semantics are similar to `unwrap_or` and `unwrap_or_else`. If you want a `try_opt!` macro, there's already another crate (`try_opt`) for that. ## [Documentation](http://mixthos.github.com/try_or) ## Usage Add to your Cargo.toml: ```toml [dependencies] try_or = "0.1" ``` Use the macros like this: ```rust #[macro_use] extern crate try_or; fn main() { // test try_or! assert_eq!({ || try_or!("5".parse::(), 1) } (), 5); assert_eq!({ || try_or!("a".parse::(), 1) } (), 1); // test try_or_else! assert_eq!({ || try_or_else!("1".parse::(), |_| 5) } (), 1); assert_eq!({ || try_or_else!("a".parse::(), |_| 5) } (), 5); // test try_opt_or! assert_eq!({ || try_opt_or!(Some(1), 2) } (), 1); assert_eq!({ || try_opt_or!(None, 2) } (), 2); // test try_or_else! assert_eq!({ || try_opt_or_else!(Some(1), || 2) } (), 1); assert_eq!({ || try_opt_or_else!(None, || 2) } (), 2); } ``` try_or-0.2.0/src/lib.rs00006440000000000000000000004441127600347300013125 0ustar0000000000000000//! Contains the macros `try_or!`, `try_or_else!`, `try_opt_or!` and //! `try_opt_or_else!`. These are helper macros for unwrapping a `Result` or an //! `Option` while returning early for `Err` and `None` values. The semantics //! are similar to `unwrap_or` and `unwrap_or_else`. //! //! If you want a `try_opt!` macro, there's already another crate (`try_opt`) //! for that. #![no_std] /// Helper macro for unwrapping `Result` values. Returns early with the value /// of the second parameter if the first parameter is `Err`. #[macro_export] macro_rules! try_or { ( $expr:expr , $or:expr ) => {{ match { $expr } { Ok(res) => res, Err(_) => { return { $or }; }, } }} } /// Unwraps a `Result`. If the result is `Err`, calls the function `$or_fn` with /// its value and returns early with its result. #[macro_export] macro_rules! try_or_else { ( $expr:expr , $or_fn:expr ) => {{ match { $expr } { Ok(res) => res, Err(err) => { return { $or_fn }(err); }, } }} } /*/// Unwraps an `Option`, returning `None` if the option is `None`. #[macro_export] macro_rules! try_opt { ( $expr:expr ) => {{ match { $expr } { Some(val) => val, None => return None, } }} }*/ /// Unwraps an `Option`, returning the second parameter if the option is `None`. #[macro_export] macro_rules! try_opt_or { ( $expr:expr , $or:expr ) => {{ match { $expr } { Some(res) => res, None => return { $or }, } }} } /// Unwraps an `Option`. If the result is `None`, calls the function `$or_fn` /// and returns its result. #[macro_export] macro_rules! try_opt_or_else { ( $expr:expr , $or_fn:expr ) => {{ match { $expr } { Some(res) => res, None => return { $or_fn }(), } }} } #[cfg(test)] mod tests { #[test] fn it_works() { // test try_or! assert_eq!({ || try_or!("5".parse::(), 1) } (), 5); assert_eq!({ || try_or!("a".parse::(), 1) } (), 1); // test try_or_else! assert_eq!({ || try_or_else!("1".parse::(), |_| 5) } (), 1); assert_eq!({ || try_or_else!("a".parse::(), |_| 5) } (), 5); // test try_opt_or! assert_eq!({ || try_opt_or!(Some(1), 2) } (), 1); assert_eq!({ || try_opt_or!(None, 2) } (), 2); // test try_or_else! assert_eq!({ || try_opt_or_else!(Some(1), || 2) } (), 1); assert_eq!({ || try_opt_or_else!(None, || 2) } (), 2); } }