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69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
//===- CoroutineStmtBuilder.h - Implicit coroutine stmt builder -*- 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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// This file defines CoroutineStmtBuilder, a class for building the implicit
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// statements required for building a coroutine body.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_SEMA_COROUTINESTMTBUILDER_H
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#define LLVM_CLANG_LIB_SEMA_COROUTINESTMTBUILDER_H
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#include "clang/AST/Decl.h"
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#include "clang/AST/ExprCXX.h"
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#include "clang/AST/StmtCXX.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Sema/SemaInternal.h"
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namespace clang {
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class CoroutineStmtBuilder : public CoroutineBodyStmt::CtorArgs {
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Sema &S;
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FunctionDecl &FD;
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sema::FunctionScopeInfo &Fn;
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bool IsValid = true;
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SourceLocation Loc;
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SmallVector<Stmt *, 4> ParamMovesVector;
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const bool IsPromiseDependentType;
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CXXRecordDecl *PromiseRecordDecl = nullptr;
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public:
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/// Construct a CoroutineStmtBuilder and initialize the promise
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/// statement and initial/final suspends from the FunctionScopeInfo.
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CoroutineStmtBuilder(Sema &S, FunctionDecl &FD, sema::FunctionScopeInfo &Fn,
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Stmt *Body);
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/// Build the coroutine body statements, including the
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/// "promise dependent" statements when the promise type is not dependent.
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bool buildStatements();
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/// Build the coroutine body statements that require a non-dependent
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/// promise type in order to construct.
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///
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/// For example different new/delete overloads are selected depending on
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/// if the promise type provides `unhandled_exception()`, and therefore they
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/// cannot be built until the promise type is complete so that we can perform
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/// name lookup.
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bool buildDependentStatements();
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bool isInvalid() const { return !this->IsValid; }
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private:
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bool makePromiseStmt();
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bool makeInitialAndFinalSuspend();
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bool makeNewAndDeleteExpr();
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bool makeOnFallthrough();
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bool makeOnException();
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bool makeReturnObject();
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bool makeGroDeclAndReturnStmt();
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bool makeReturnOnAllocFailure();
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};
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} // end namespace clang
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#endif // LLVM_CLANG_LIB_SEMA_COROUTINESTMTBUILDER_H
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