211d569a2b
As noted in the attached bug, accurately counting this would require significant changes to the parser and is thus infeasible. Bug: v8:7211 Change-Id: I61f14c948f50e0f97e596a9696d72a3570ad588a Reviewed-on: https://chromium-review.googlesource.com/853214 Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org> Commit-Queue: Adam Klein <adamk@chromium.org> Cr-Commit-Position: refs/heads/master@{#50393}
66 lines
3.0 KiB
C++
66 lines
3.0 KiB
C++
// Copyright 2016 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#include "src/v8.h"
|
|
|
|
#include "test/cctest/cctest.h"
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
namespace test_usecounters {
|
|
|
|
int* global_use_counts = nullptr;
|
|
|
|
void MockUseCounterCallback(v8::Isolate* isolate,
|
|
v8::Isolate::UseCounterFeature feature) {
|
|
++global_use_counts[feature];
|
|
}
|
|
|
|
TEST(AssigmentExpressionLHSIsCall) {
|
|
v8::Isolate* isolate = CcTest::isolate();
|
|
v8::HandleScope scope(isolate);
|
|
LocalContext env;
|
|
int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
|
|
global_use_counts = use_counts;
|
|
CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
|
|
|
|
// AssignmentExpressions whose LHS is not a call do not increment counters
|
|
CompileRun("function f(){ a = 0; a()[b] = 0; }");
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
|
|
CompileRun("function f(){ ++a; ++a()[b]; }");
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
|
|
CompileRun("function f(){ 'use strict'; a = 0; a()[b] = 0; }");
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
|
|
CompileRun("function f(){ 'use strict'; ++a; ++a()[b]; }");
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
|
|
|
|
// AssignmentExpressions whose LHS is a call increment appropriate counters
|
|
CompileRun("function f(){ a() = 0; }");
|
|
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
|
|
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy] = 0;
|
|
CompileRun("function f(){ 'use strict'; a() = 0; }");
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
|
|
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
|
|
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict] = 0;
|
|
|
|
// UpdateExpressions whose LHS is a call increment appropriate counters
|
|
CompileRun("function f(){ ++a(); }");
|
|
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
|
|
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy] = 0;
|
|
CompileRun("function f(){ 'use strict'; ++a(); }");
|
|
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
|
|
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
|
|
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict] = 0;
|
|
}
|
|
|
|
} // namespace test_usecounters
|
|
} // namespace internal
|
|
} // namespace v8
|