81620900e9
Bug: v8:3770 Change-Id: If405611d359d29ae1958beebd9202e068434a621 Reviewed-on: https://chromium-review.googlesource.com/c/1350286 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by: Leszek Swirski <leszeks@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#57918}
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Test specific cases of the lazy/eager-parse decision.
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//
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// Note that presently most unit tests for parsing are found in
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// cctest/test-parsing.cc.
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#include <unordered_map>
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#include "include/v8.h"
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#include "src/api-inl.h"
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#include "src/handles-inl.h"
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#include "src/isolate.h"
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#include "src/objects-inl.h"
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#include "src/utils.h"
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#include "test/cctest/cctest.h"
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namespace v8 {
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namespace internal {
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namespace {
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// Record the 'compiled' state of all top level functions.
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void GetTopLevelFunctionInfo(
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v8::Local<v8::Script> script,
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std::unordered_map<std::string, bool>* is_compiled) {
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// Get the v8::internal::Script object from the API v8::Script.
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// The API object 'wraps' the compiled top-level function, not the i::Script.
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Handle<JSFunction> toplevel_fn = v8::Utils::OpenHandle(*script);
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SharedFunctionInfo::ScriptIterator iterator(
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toplevel_fn->GetIsolate(), Script::cast(toplevel_fn->shared()->script()));
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for (SharedFunctionInfo shared = iterator.Next(); !shared.is_null();
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shared = iterator.Next()) {
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std::unique_ptr<char[]> name = String::cast(shared->Name())->ToCString();
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is_compiled->insert(std::make_pair(name.get(), shared->is_compiled()));
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}
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}
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} // anonymous namespace
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TEST(GetTopLevelFunctionInfo) {
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if (!FLAG_lazy) return;
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Isolate* isolate = CcTest::i_isolate();
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HandleScope scope(isolate);
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LocalContext env;
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const char src[] = "function foo() { var a; }\n";
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std::unordered_map<std::string, bool> is_compiled;
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GetTopLevelFunctionInfo(v8_compile(src), &is_compiled);
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// Test that our helper function GetTopLevelFunctionInfo does what it claims:
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DCHECK(is_compiled.find("foo") != is_compiled.end());
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DCHECK(is_compiled.find("bar") == is_compiled.end());
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}
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TEST(EagerlyCompileImmediateUseFunctions) {
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if (!FLAG_lazy) return;
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Isolate* isolate = CcTest::i_isolate();
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HandleScope scope(isolate);
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LocalContext env;
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// Test parenthesized, exclaimed, and regular functions. Make sure these
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// occur both intermixed and after each other, to make sure the 'reset'
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// mechanism works.
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const char src[] =
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"function normal() { var a; }\n" // Normal: Should lazy parse.
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"(function parenthesized() { var b; })()\n" // Parenthesized: Pre-parse.
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"!function exclaimed() { var c; }() \n" // Exclaimed: Pre-parse.
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"function normal2() { var d; }\n"
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"(function parenthesized2() { var e; })()\n"
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"function normal3() { var f; }\n"
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"!function exclaimed2() { var g; }() \n"
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"function normal4() { var h; }\n";
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std::unordered_map<std::string, bool> is_compiled;
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GetTopLevelFunctionInfo(v8_compile(src), &is_compiled);
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DCHECK(is_compiled["parenthesized"]);
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DCHECK(is_compiled["parenthesized2"]);
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DCHECK(is_compiled["exclaimed"]);
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DCHECK(is_compiled["exclaimed2"]);
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DCHECK(!is_compiled["normal"]);
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DCHECK(!is_compiled["normal2"]);
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DCHECK(!is_compiled["normal3"]);
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DCHECK(!is_compiled["normal4"]);
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}
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TEST(CommaFunctionSequence) {
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if (!FLAG_lazy) return;
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Isolate* isolate = CcTest::i_isolate();
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HandleScope scope(isolate);
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LocalContext env;
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const char src[] = "!function a(){}(),function b(){}(),function c(){}();";
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std::unordered_map<std::string, bool> is_compiled;
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GetTopLevelFunctionInfo(v8_compile(src), &is_compiled);
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DCHECK(is_compiled["a"]);
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DCHECK(is_compiled["b"]);
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DCHECK(is_compiled["c"]);
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}
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} // namespace internal
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} // namespace v8
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