Source code
Revision control
Copy as Markdown
Other Tools
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include <string.h>
#include "jsapi.h"
#include "frontend/CompilationStencil.h"
#include "js/CompilationAndEvaluation.h"
#include "js/experimental/CompileScript.h"
#include "js/experimental/JSStencil.h"
#include "js/Modules.h"
#include "js/PropertyAndElement.h" // JS_GetProperty, JS_HasOwnProperty, JS_SetProperty
#include "js/Transcoding.h"
#include "jsapi-tests/tests.h"
#include "vm/HelperThreads.h" // js::RunPendingSourceCompressions
#include "vm/Monitor.h" // js::Monitor, js::AutoLockMonitor
BEGIN_TEST(testStencil_Basic) {
const char* chars =
"function f() { return 42; }"
"f();";
auto result = basic_test<char, mozilla::Utf8Unit>(chars);
CHECK(result);
const char16_t* chars16 =
u"function f() { return 42; }"
u"f();";
auto result16 = basic_test<char16_t, char16_t>(chars16);
CHECK(result16);
return true;
}
template <typename CharT, typename SourceT>
bool basic_test(const CharT* chars) {
size_t length = std::char_traits<CharT>::length(chars);
JS::SourceText<SourceT> srcBuf;
CHECK(srcBuf.init(cx, chars, length, JS::SourceOwnership::Borrowed));
JS::CompileOptions options(cx);
RefPtr<JS::Stencil> stencil =
JS::CompileGlobalScriptToStencil(cx, options, srcBuf);
CHECK(stencil);
JS::InstantiateOptions instantiateOptions(options);
JS::RootedScript script(
cx, JS::InstantiateGlobalStencil(cx, instantiateOptions, stencil));
CHECK(script);
JS::RootedValue rval(cx);
CHECK(JS_ExecuteScript(cx, script, &rval));
CHECK(rval.isNumber() && rval.toNumber() == 42);
return true;
}
END_TEST(testStencil_Basic)
BEGIN_TEST(testStencil_Module) {
const char* chars =
"export function f() { return 42; }"
"globalThis.x = f();";
auto result = basic_test<char, mozilla::Utf8Unit>(chars);
CHECK(result);
const char16_t* chars16 =
u"export function f() { return 42; }"
u"globalThis.x = f();";
auto result16 = basic_test<char16_t, char16_t>(chars16);
CHECK(result16);
return true;
}
template <typename CharT, typename SourceT>
bool basic_test(const CharT* chars) {
size_t length = std::char_traits<CharT>::length(chars);
JS::SourceText<SourceT> srcBuf;
CHECK(srcBuf.init(cx, chars, length, JS::SourceOwnership::Borrowed));
JS::CompileOptions options(cx);
options.setFile("testStencil_Module");
RefPtr<JS::Stencil> stencil =
JS::CompileModuleScriptToStencil(cx, options, srcBuf);
CHECK(stencil);
JS::InstantiateOptions instantiateOptions(options);
JS::RootedObject moduleObject(
cx, JS::InstantiateModuleStencil(cx, instantiateOptions, stencil));
CHECK(moduleObject);
// Link and evaluate the module graph. The link step used to be call
// "instantiate" but is unrelated to the concept in Stencil with same name.
JS::RootedValue rval(cx);
CHECK(JS::ModuleLink(cx, moduleObject));
CHECK(JS::ModuleEvaluate(cx, moduleObject, &rval));
CHECK(!rval.isUndefined());
js::RunJobs(cx);
CHECK(JS_GetProperty(cx, global, "x", &rval));
CHECK(rval.isNumber() && rval.toNumber() == 42);
return true;
}
END_TEST(testStencil_Module)
BEGIN_TEST(testStencil_NonSyntactic) {
const char* chars =
"function f() { return x; }"
"f();";
JS::SourceText<mozilla::Utf8Unit> srcBuf;
CHECK(srcBuf.init(cx, chars, strlen(chars), JS::SourceOwnership::Borrowed));
JS::CompileOptions options(cx);
options.setNonSyntacticScope(true);
RefPtr<JS::Stencil> stencil =
JS::CompileGlobalScriptToStencil(cx, options, srcBuf);
CHECK(stencil);
JS::InstantiateOptions instantiateOptions(options);
JS::RootedScript script(
cx, JS::InstantiateGlobalStencil(cx, instantiateOptions, stencil));
CHECK(script);
JS::RootedObject obj(cx, JS_NewPlainObject(cx));
JS::RootedValue val(cx, JS::Int32Value(42));
CHECK(obj);
CHECK(JS_SetProperty(cx, obj, "x", val));
JS::RootedObjectVector chain(cx);
CHECK(chain.append(obj));
JS::RootedValue rval(cx);
CHECK(JS_ExecuteScript(cx, chain, script, &rval));
CHECK(rval.isNumber() && rval.toNumber() == 42);
return true;
}
END_TEST(testStencil_NonSyntactic)
BEGIN_TEST(testStencil_MultiGlobal) {
const char* chars =
"/**************************************/"
"/**************************************/"
"/**************************************/"
"/**************************************/"
"/**************************************/"
"/**************************************/"
"function f() { return 42; }"
"f();";
JS::SourceText<mozilla::Utf8Unit> srcBuf;
CHECK(srcBuf.init(cx, chars, strlen(chars), JS::SourceOwnership::Borrowed));
JS::CompileOptions options(cx);
RefPtr<JS::Stencil> stencil =
JS::CompileGlobalScriptToStencil(cx, options, srcBuf);
CHECK(stencil);
CHECK(RunInNewGlobal(cx, stencil));
CHECK(RunInNewGlobal(cx, stencil));
CHECK(RunInNewGlobal(cx, stencil));
// Start any pending SourceCompressionTasks now to confirm nothing fell apart
// when using a JS::Stencil multiple times.
CHECK(strlen(chars) > js::ScriptSource::MinimumCompressibleLength);
js::RunPendingSourceCompressions(cx->runtime());
return true;
}
bool RunInNewGlobal(JSContext* cx, RefPtr<JS::Stencil> stencil) {
JS::RootedObject otherGlobal(cx, createGlobal());
CHECK(otherGlobal);
JSAutoRealm ar(cx, otherGlobal);
JS::InstantiateOptions instantiateOptions;
JS::RootedScript script(
cx, JS::InstantiateGlobalStencil(cx, instantiateOptions, stencil));
CHECK(script);
JS::RootedValue rval(cx);
CHECK(JS_ExecuteScript(cx, script, &rval));
CHECK(rval.isNumber() && rval.toNumber() == 42);
return true;
}
END_TEST(testStencil_MultiGlobal)
BEGIN_TEST(testStencil_Transcode) {
JS::SetProcessBuildIdOp(TestGetBuildId);
JS::TranscodeBuffer buffer;
{
const char* chars =
"function f() { return 42; }"
"f();";
JS::SourceText<mozilla::Utf8Unit> srcBuf;
CHECK(srcBuf.init(cx, chars, strlen(chars), JS::SourceOwnership::Borrowed));
JS::CompileOptions options(cx);
RefPtr<JS::Stencil> stencil =
JS::CompileGlobalScriptToStencil(cx, options, srcBuf);
CHECK(stencil);
// Encode Stencil to XDR
JS::TranscodeResult res = JS::EncodeStencil(cx, stencil, buffer);
CHECK(res == JS::TranscodeResult::Ok);
CHECK(!buffer.empty());
// Instantiate and Run
JS::InstantiateOptions instantiateOptions(options);
JS::RootedScript script(
cx, JS::InstantiateGlobalStencil(cx, instantiateOptions, stencil));
JS::RootedValue rval(cx);
CHECK(script);
CHECK(JS_ExecuteScript(cx, script, &rval));
CHECK(rval.isNumber() && rval.toNumber() == 42);
}
// Create a new global
CHECK(createGlobal());
JSAutoRealm ar(cx, global);
// Confirm it doesn't have the old code
bool found = false;
CHECK(JS_HasOwnProperty(cx, global, "f", &found));
CHECK(!found);
{
// Decode the stencil into new range
RefPtr<JS::Stencil> stencil;
{
JS::DecodeOptions decodeOptions;
JS::TranscodeRange range(buffer.begin(), buffer.length());
JS::TranscodeResult res =
JS::DecodeStencil(cx, decodeOptions, range, getter_AddRefs(stencil));
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());
buffer.clear();
// Instantiate and Run
JS::InstantiateOptions instantiateOptions;
JS::RootedScript script(
cx, JS::InstantiateGlobalStencil(cx, instantiateOptions, stencil));
stencil = nullptr;
JS::RootedValue rval(cx);
CHECK(script);
CHECK(JS_ExecuteScript(cx, script, &rval));
CHECK(rval.isNumber() && rval.toNumber() == 42);
}
return true;
}
static bool TestGetBuildId(JS::BuildIdCharVector* buildId) {
const char buildid[] = "testXDR";
return buildId->append(buildid, sizeof(buildid));
}
END_TEST(testStencil_Transcode)
BEGIN_TEST(testStencil_TranscodeBorrowing) {
JS::SetProcessBuildIdOp(TestGetBuildId);
JS::TranscodeBuffer buffer;
{
const char* chars =
"function f() { return 42; }"
"f();";
JS::SourceText<mozilla::Utf8Unit> srcBuf;
CHECK(srcBuf.init(cx, chars, strlen(chars), JS::SourceOwnership::Borrowed));
JS::CompileOptions options(cx);
RefPtr<JS::Stencil> stencil =
JS::CompileGlobalScriptToStencil(cx, options, srcBuf);
CHECK(stencil);
// Encode Stencil to XDR
JS::TranscodeResult res = JS::EncodeStencil(cx, stencil, buffer);
CHECK(res == JS::TranscodeResult::Ok);
CHECK(!buffer.empty());
}
JS::RootedScript script(cx);
{
JS::TranscodeRange range(buffer.begin(), buffer.length());
JS::DecodeOptions decodeOptions;
decodeOptions.borrowBuffer = true;
RefPtr<JS::Stencil> stencil;
JS::TranscodeResult res =
JS::DecodeStencil(cx, decodeOptions, range, getter_AddRefs(stencil));
CHECK(res == JS::TranscodeResult::Ok);
JS::InstantiateOptions instantiateOptions;
script = JS::InstantiateGlobalStencil(cx, instantiateOptions, stencil);
CHECK(script);
}
// Delete the buffer to verify that the instantiated script has no dependency
// to the buffer.
memset(buffer.begin(), 0, buffer.length());
buffer.clear();
JS::RootedValue rval(cx);
CHECK(JS_ExecuteScript(cx, script, &rval));
CHECK(rval.isNumber() && rval.toNumber() == 42);
return true;
}
static bool TestGetBuildId(JS::BuildIdCharVector* buildId) {
const char buildid[] = "testXDR";
return buildId->append(buildid, sizeof(buildid));
}
END_TEST(testStencil_TranscodeBorrowing)