1 //===- CoroutineStmtBuilder.h - Implicit coroutine stmt builder -*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //===----------------------------------------------------------------------===//
9 // This file defines CoroutineStmtBuilder, a class for building the implicit
10 // statements required for building a coroutine body.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_CLANG_LIB_SEMA_COROUTINESTMTBUILDER_H
15 #define LLVM_CLANG_LIB_SEMA_COROUTINESTMTBUILDER_H
17 #include "clang/AST/Decl.h"
18 #include "clang/AST/ExprCXX.h"
19 #include "clang/AST/StmtCXX.h"
20 #include "clang/Lex/Preprocessor.h"
21 #include "clang/Sema/SemaInternal.h"
25 class CoroutineStmtBuilder : public CoroutineBodyStmt::CtorArgs {
28 sema::FunctionScopeInfo &Fn;
32 SmallVector<Stmt *, 4> ParamMovesVector;
33 const bool IsPromiseDependentType;
34 CXXRecordDecl *PromiseRecordDecl = nullptr;
37 /// \brief Construct a CoroutineStmtBuilder and initialize the promise
38 /// statement and initial/final suspends from the FunctionScopeInfo.
39 CoroutineStmtBuilder(Sema &S, FunctionDecl &FD, sema::FunctionScopeInfo &Fn,
42 /// \brief Build the coroutine body statements, including the
43 /// "promise dependent" statements when the promise type is not dependent.
44 bool buildStatements();
46 /// \brief Build the coroutine body statements that require a non-dependent
47 /// promise type in order to construct.
49 /// For example different new/delete overloads are selected depending on
50 /// if the promise type provides `unhandled_exception()`, and therefore they
51 /// cannot be built until the promise type is complete so that we can perform
53 bool buildDependentStatements();
55 bool isInvalid() const { return !this->IsValid; }
58 bool makePromiseStmt();
59 bool makeInitialAndFinalSuspend();
60 bool makeNewAndDeleteExpr();
61 bool makeOnFallthrough();
62 bool makeOnException();
63 bool makeReturnObject();
64 bool makeReturnOnAllocFailure();
65 bool makeParamMoves();
68 } // end namespace clang
70 #endif // LLVM_CLANG_LIB_SEMA_COROUTINESTMTBUILDER_H