b5eb8da05f
Previously we'd need to eagerly compile upon access to function.length for a lazy function. The preparser already computes function.length, however, so we can store that information in the already available preparse data. Change-Id: I19007c9db5839e8038291fb4433866303935f089 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1564190 Commit-Queue: Toon Verwaest <verwaest@chromium.org> Reviewed-by: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#60767}
39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
// Copyright 2017 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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#include "src/api-inl.h"
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#include "src/objects-inl.h"
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#include "test/unittests/test-helpers.h"
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#include "test/unittests/test-utils.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace v8 {
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namespace internal {
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class PreParserTest : public TestWithNativeContext {
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public:
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PreParserTest() = default;
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private:
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DISALLOW_COPY_AND_ASSIGN(PreParserTest);
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};
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TEST_F(PreParserTest, LazyFunctionLength) {
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const char* script_source = "function lazy(a, b, c) { } lazy";
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Handle<JSFunction> lazy_function = RunJS<JSFunction>(script_source);
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Handle<SharedFunctionInfo> shared(lazy_function->shared(),
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lazy_function->GetIsolate());
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CHECK_EQ(3, shared->length());
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Handle<Smi> length = RunJS<Smi>("lazy.length");
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int32_t value;
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CHECK(length->ToInt32(&value));
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CHECK_EQ(3, value);
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}
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} // namespace internal
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} // namespace v8
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