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Necessary preparations for a later PR that adds bulk memory
support to wasm2js (splitting this out so the next PR is less big):
* Fix logging of print functions in wasm2js spec tests, there
was an extra space in the output (which console.log adds
automatically between items).
* Don't assume the output is always empty, as some tests
(like bulk memory) do have expected output.
* Rename test/bulk-memory.wast as it "conflicts" with
test/spec/bulk-memory.wast - the problem is that we scan
both places, and emit files in test/wasm2js/*, so those
would collide if the names overlap.
* Extend the parsing and emitting of JS for (assert.. ) lines such as
(assert_return (invoke "foo" (i32.const 1)) (i32.const 2))
to also handle
(invoke "foo" (i32.const 1)) (i32.const 2))
Without this, we skip (invoke ..) lines in spec tests, which normally is
fine, but in bulk memory at least they have side effects we need - we
must run them before the later assertions.
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This updates spec test suite to that of the current up-to-date version
of https://github.com/WebAssembly/spec repo.
- All failing tests are added in `BLACKLIST` in shared.py with reasons.
- For tests that already existed and was passing and started failing
after the update, we add the new test to the blacklist and preserve
the old file by renaming it to 'old_[FILENAME].wast' not to lose test
coverage. When the cause of the error is fixed or the unsupported
construct gets support so the new test passes, we can delete the
corresponding 'old_[FILENAME].wast' file.
- Adds support for `spectest.print_[type] style imports.
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* Rename the `wasm2asm` tool to `wasm2js`
This commit performs a relatively simple rename of the `wasm2asm` tool to
`wasm2js`. The functionality of the tool doesn't change just yet but it's
intended that we'll start generating an ES module instead of just an `asm.js`
function soon.
* wasm2js: Support `*.wasm` input files
Previously `wasm2js` only supported `*.wast` files but to make it a bit easier
to use in tooling pipelines this commit adds support for reading in a `*.wasm`
file directly. Determining which parser to use depends on the input filename,
where the binary parser is used with `*.wasm` files and the wast parser is used
for all other files.
* wasm2js: Emit ESM imports/exports by default
This commit alters the default behavior of `wasm2js` to emit an ESM by default,
either importing items from the environment or exporting. Items like
initialization of memory are also handled here.
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