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10742d9a12
This implements generating source maps for the generated Wasm files. Copying dart2js's command line interface, a source map file with the name `<program name>.wasm.map` is generated unless `--no-source-maps` is passed. When a source map is generated, the generated .wasm file gets a new section `sourceMappingURL` with the contents `<program name>.wasm.map`. This section seems to be undocumented, but Chrome and binaryen recognize it as the URI to the source map file. Chrome is then loads it automatically in the DevTools. ## Implementation - `wasm_builder` package is updated with the new `source_map` library, which describes the source mapping entries. - `wasm_builder`'s `InstructionsBuilder` is updated with the new public members: - `startSourceMapping`: starts mapping the instructions generated to the given source code. - `stopSourceMapping`: stops mapping the instructions generated to a source code. These instructions won't have a mapping in the source map. - `CodeGenerator` sets the source file URI and location in the file when: - Starting compiling a new member - Compiling an expression and statement Change-Id: Ic8f723f7a154402c0d34710689db57d640b83b86 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/370500 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Ömer Ağacan <omersa@google.com> |
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analysis_options.yaml | ||
OWNERS | ||
pubspec.yaml |