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Bug 1834809 - Add JS::DecodeStencil with JS::FrontendContext. r=nbp

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Differential Revision: https://phabricator.services.mozilla.com/D179013
This commit is contained in:
Tooru Fujisawa 2023-05-31 01:26:46 +00:00
parent c053846bd3
commit 345e3894a3
3 changed files with 25 additions and 3 deletions
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4
js/public/experimental/JSStencil.h
View File

@ -206,6 +206,10 @@ extern JS_PUBLIC_API TranscodeResult DecodeStencil(JSContext* cx,
const DecodeOptions& options,
const TranscodeRange& range,
Stencil** stencilOut);
extern JS_PUBLIC_API TranscodeResult DecodeStencil(JS::FrontendContext* fc,
const DecodeOptions& options,
const TranscodeRange& range,
Stencil** stencilOut);
// Register an encoder on its script source, such that all functions can be
// encoded as they are delazified.

13
js/src/frontend/Stencil.cpp
View File

@ -5325,16 +5325,23 @@ JS::TranscodeResult JS::DecodeStencil(JSContext* cx,
const JS::TranscodeRange& range,
JS::Stencil** stencilOut) {
AutoReportFrontendContext fc(cx);
RefPtr<ScriptSource> source = fc.getAllocator()->new_<ScriptSource>();
return JS::DecodeStencil(&fc, options, range, stencilOut);
}
JS::TranscodeResult JS::DecodeStencil(JS::FrontendContext* fc,
const JS::DecodeOptions& options,
const JS::TranscodeRange& range,
JS::Stencil** stencilOut) {
RefPtr<ScriptSource> source = fc->getAllocator()->new_<ScriptSource>();
if (!source) {
return TranscodeResult::Throw;
}
RefPtr<JS::Stencil> stencil(
fc.getAllocator()->new_<CompilationStencil>(source));
fc->getAllocator()->new_<CompilationStencil>(source));
if (!stencil) {
return TranscodeResult::Throw;
}
XDRStencilDecoder decoder(&fc, range);
XDRStencilDecoder decoder(fc, range);
XDRResult res = decoder.codeStencil(options, *stencil);
if (res.isErr()) {
return res.unwrapErr();

11
js/src/jsapi-tests/testStencil.cpp
View File

@ -11,6 +11,7 @@
#include "frontend/CompilationStencil.h"
#include "js/CompilationAndEvaluation.h"
#include "js/experimental/CompileScript.h"
#include "js/experimental/JSStencil.h"
#include "js/Modules.h"
#include "js/OffThreadScriptCompilation.h"
@ -248,6 +249,16 @@ BEGIN_TEST(testStencil_Transcode) {
CHECK(res == JS::TranscodeResult::Ok);
}
{
JS::FrontendContext* fc = JS::NewFrontendContext();
JS::DecodeOptions decodeOptions;
JS::TranscodeRange range(buffer.begin(), buffer.length());
JS::TranscodeResult res =
JS::DecodeStencil(fc, decodeOptions, range, getter_AddRefs(stencil));
CHECK(res == JS::TranscodeResult::Ok);
JS::DestroyFrontendContext(fc);
}
// Delete the buffer to verify that the decoded stencil has no dependency
// to the buffer.
memset(buffer.begin(), 0, buffer.length());