6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
//===--- EnterExpressionEvaluationContext.h ---------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_SEMA_ENTEREXPRESSIONEVALUATIONCONTEXT_H
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#define LLVM_CLANG_SEMA_ENTEREXPRESSIONEVALUATIONCONTEXT_H
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#include "clang/Sema/Sema.h"
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namespace clang {
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class Decl;
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/// RAII object that enters a new expression evaluation context.
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class EnterExpressionEvaluationContext {
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Sema &Actions;
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bool Entered = true;
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public:
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EnterExpressionEvaluationContext(
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Sema &Actions, Sema::ExpressionEvaluationContext NewContext,
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Decl *LambdaContextDecl = nullptr,
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Sema::ExpressionEvaluationContextRecord::ExpressionKind ExprContext =
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Sema::ExpressionEvaluationContextRecord::EK_Other,
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bool ShouldEnter = true)
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: Actions(Actions), Entered(ShouldEnter) {
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if (Entered)
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Actions.PushExpressionEvaluationContext(NewContext, LambdaContextDecl,
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ExprContext);
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}
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EnterExpressionEvaluationContext(
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Sema &Actions, Sema::ExpressionEvaluationContext NewContext,
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Sema::ReuseLambdaContextDecl_t,
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Sema::ExpressionEvaluationContextRecord::ExpressionKind ExprContext =
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Sema::ExpressionEvaluationContextRecord::EK_Other)
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: Actions(Actions) {
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Actions.PushExpressionEvaluationContext(
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NewContext, Sema::ReuseLambdaContextDecl, ExprContext);
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}
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enum InitListTag { InitList };
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EnterExpressionEvaluationContext(Sema &Actions, InitListTag,
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bool ShouldEnter = true)
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: Actions(Actions), Entered(false) {
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// In C++11 onwards, narrowing checks are performed on the contents of
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// braced-init-lists, even when they occur within unevaluated operands.
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// Therefore we still need to instantiate constexpr functions used in such
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// a context.
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if (ShouldEnter && Actions.isUnevaluatedContext() &&
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Actions.getLangOpts().CPlusPlus11) {
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Actions.PushExpressionEvaluationContext(
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Sema::ExpressionEvaluationContext::UnevaluatedList);
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Entered = true;
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}
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}
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~EnterExpressionEvaluationContext() {
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if (Entered)
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Actions.PopExpressionEvaluationContext();
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}
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};
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} // namespace clang
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#endif
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