b83c5a06c5
Make WasmFeatures a proper class which uses an EnumSet under the hood. This way, it inherits all behaviour of EnumSet like comparison, merge, etc. Accesses change from being simple field access into the struct to actually bit tests in the EnumSet. R=mstarzinger@chromium.org Bug: v8:10019 Change-Id: I768f92b90ac0294156f4482defba5ce00bc70165 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1934334 Commit-Queue: Clemens Backes <clemensb@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#65184}
69 lines
1.6 KiB
C++
69 lines
1.6 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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#ifndef V8_TEST_COMMON_FLAG_UTILS_H
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#define V8_TEST_COMMON_FLAG_UTILS_H
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#include "src/wasm/wasm-features.h"
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namespace v8 {
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namespace internal {
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template <typename T>
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class FlagScope {
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public:
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FlagScope(T* flag, T new_value) : flag_(flag), previous_value_(*flag) {
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*flag = new_value;
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}
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~FlagScope() { *flag_ = previous_value_; }
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private:
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T* flag_;
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T previous_value_;
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};
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#define FLAG_SCOPE(flag) \
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FlagScope<bool> __scope_##flag##__LINE__(&FLAG_##flag, true)
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#define EXPERIMENTAL_FLAG_SCOPE(flag) FLAG_SCOPE(experimental_wasm_##flag)
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namespace wasm {
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class WasmFeatureScope {
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public:
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explicit WasmFeatureScope(WasmFeatures* features, WasmFeature feature,
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bool val = true)
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: prev_(features->contains(feature)),
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feature_(feature),
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features_(features) {
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set(val);
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}
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~WasmFeatureScope() { set(prev_); }
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private:
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void set(bool val) {
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if (val) {
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features_->Add(feature_);
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} else {
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features_->Remove(feature_);
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}
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}
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bool const prev_;
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WasmFeature const feature_;
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WasmFeatures* const features_;
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};
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#define WASM_FEATURE_SCOPE(feat) \
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WasmFeatureScope feat##_scope(&this->enabled_features_, kFeature_##feat)
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#define WASM_FEATURE_SCOPE_VAL(feat, val) \
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WasmFeatureScope feat##_scope(&this->enabled_features_, kFeature_##feat, val)
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} // namespace wasm
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} // namespace internal
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} // namespace v8
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#endif // V8_TEST_COMMON_FLAG_UTILS_H
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