1
0
mirror of https://github.com/fluencelabs/wasm-bindgen synced 2025-07-09 09:31:33 +00:00
Files
.cargo
crates
backend
cli
cli-support
futures
js-sys
macro
src
ui-tests
Cargo.toml
attribute-fails-to-parse.rs
attribute-fails-to-parse.stderr
bad-signatures.rs
bad-signatures.stderr
invalid-attr.rs
invalid-attr.stderr
invalid-enums.rs
invalid-enums.stderr
invalid-imports.rs
invalid-imports.stderr
invalid-items.rs
invalid-items.stderr
invalid-methods.rs
invalid-methods.stderr
non-public-function.rs
non-public-function.stderr
test.rs
update-all-references.sh
update-references.sh
Cargo.toml
README.md
macro-support
shared
test
test-macro
typescript
web-sys
webidl
webidl-tests
examples
guide
releases
src
tests
.appveyor.yml
.eslintignore
.eslintrc
.gitattributes
.gitignore
.travis.yml
CHANGELOG.md
CONTRIBUTING.md
Cargo.toml
LICENSE-APACHE
LICENSE-MIT
README.md
package-lock.json
package.json
yarn.lock
wasm-bindgen/crates/macro/ui-tests/attribute-fails-to-parse.rs

9 lines
133 B
Rust
Raw Normal View History

Prepare to have targeted error diagnostics (#604) This commit starts to add infrastructure for targeted diagnostics in the `#[wasm_bindgen]` attribute, intended eventually at providing much better errors as they'll be pointing to exactly the code in question rather than always to a `#[wasm_bindgen]` attribute. The general changes are are: * A new `Diagnostic` error type is added to the backend. A `Diagnostic` is created with a textual error or with a span, and it can also be created from a list of diagnostics. A `Diagnostic` implements `ToTokens` which emits a bunch of invocations of `compile_error!` that will cause rustc to later generate errors. * Fallible implementations of `ToTokens` have switched to using a new trait, `TryToTokens`, which returns a `Result` to use `?` with. * The `MacroParse` trait has changed to returning a `Result` to propagate errors upwards. * A new `ui-tests` crate was added which uses `compiletest_rs` to add UI tests. These UI tests will verify that our output improves over time and does not regress. This test suite is added to CI as a new builder as well. * No `Diagnostic` instances are created just yet, everything continues to panic and return `Ok`, with the one exception of the top-level invocations of `syn::parse` which now create a `Diagnostic` and pass it along. This commit does not immediately improve diagnostics but the intention is that it is laying the groundwork for improving diagnostics over time. It should ideally be much easier to contribute improved diagnostics after this commit! cc #601
2018-08-01 17:15:27 -05:00
#![feature(use_extern_macros)]
extern crate wasm_bindgen;
use wasm_bindgen::prelude::*;
#[wasm_bindgen(nonsense)]
pub fn foo() {}