Sourcemap support for wasm #27
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OlivierNicole
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For now, we can probably run the command |
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I did that. Running |
| wat_file | ||
| output_file = | ||
| let sourcemap_file = | ||
| if Sys.command "wasm-merge -osm foo 2> /dev/null" <> 0 then None |
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| if Sys.command "wasm-merge -osm foo 2> /dev/null" <> 0 then None | |
| if Option.is_none sourcemap_file || Sys.command "wasm-merge -osm foo 2> /dev/null" <> 0 then None |
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This would still call wasm-metadce with the -osm option though.
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If sourcemap_file is None, one does not need to check for source map support, and wasm-metadce is not going to be called with the -osm option, right?
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Ah yes, I was confused. Done.
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Implement mapping between source and wasm locations. To work, this requires a version of Binaryen compiled with Jérôme's patch WebAssembly/binaryen#6372. Single-stepping can jump around in slightly surprising ways in the OCaml code, due to the different order of operations in wasm. This could be improved by modifying Binaryen to support “no location” annotations. Another future improvement can be to support mapping Wasm identifiers to OCaml ones. Co-authored-by: Jérôme Vouillon <jerome.vouillon@gmail.com>
OlivierNicole
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I rebased the PR and squashed the history as it looked a bit weird. |
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Thanks! |
Implement mapping between source and wasm locations.
To work, this requires a version of Binaryen compiled with Jérôme's patch WebAssembly/binaryen#6372, so I’m opening this a draft for now.
Single-stepping can jump around in slightly surprising ways in the OCaml code, due to the different order of operations in wasm. This could be improved by modifying Binaryen to support “no location” annotations. Another future improvement can be to support mapping Wasm identifiers to OCaml ones.