1 //===--- StmtCXX.cpp - Classes for representing C++ statements ------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the subclesses of Stmt class declared in StmtCXX.h
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "clang/AST/StmtCXX.h"
14
15 #include "clang/AST/ASTContext.h"
16
17 using namespace clang;
18
getCaughtType() const19 QualType CXXCatchStmt::getCaughtType() const {
20 if (ExceptionDecl)
21 return ExceptionDecl->getType();
22 return QualType();
23 }
24
Create(const ASTContext & C,SourceLocation tryLoc,Stmt * tryBlock,ArrayRef<Stmt * > handlers)25 CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, SourceLocation tryLoc,
26 Stmt *tryBlock, ArrayRef<Stmt *> handlers) {
27 const size_t Size = totalSizeToAlloc<Stmt *>(handlers.size() + 1);
28 void *Mem = C.Allocate(Size, alignof(CXXTryStmt));
29 return new (Mem) CXXTryStmt(tryLoc, tryBlock, handlers);
30 }
31
Create(const ASTContext & C,EmptyShell Empty,unsigned numHandlers)32 CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, EmptyShell Empty,
33 unsigned numHandlers) {
34 const size_t Size = totalSizeToAlloc<Stmt *>(numHandlers + 1);
35 void *Mem = C.Allocate(Size, alignof(CXXTryStmt));
36 return new (Mem) CXXTryStmt(Empty, numHandlers);
37 }
38
CXXTryStmt(SourceLocation tryLoc,Stmt * tryBlock,ArrayRef<Stmt * > handlers)39 CXXTryStmt::CXXTryStmt(SourceLocation tryLoc, Stmt *tryBlock,
40 ArrayRef<Stmt *> handlers)
41 : Stmt(CXXTryStmtClass), TryLoc(tryLoc), NumHandlers(handlers.size()) {
42 Stmt **Stmts = getStmts();
43 Stmts[0] = tryBlock;
44 std::copy(handlers.begin(), handlers.end(), Stmts + 1);
45 }
46
CXXForRangeStmt(Stmt * Init,DeclStmt * Range,DeclStmt * BeginStmt,DeclStmt * EndStmt,Expr * Cond,Expr * Inc,DeclStmt * LoopVar,Stmt * Body,SourceLocation FL,SourceLocation CAL,SourceLocation CL,SourceLocation RPL)47 CXXForRangeStmt::CXXForRangeStmt(Stmt *Init, DeclStmt *Range,
48 DeclStmt *BeginStmt, DeclStmt *EndStmt,
49 Expr *Cond, Expr *Inc, DeclStmt *LoopVar,
50 Stmt *Body, SourceLocation FL,
51 SourceLocation CAL, SourceLocation CL,
52 SourceLocation RPL)
53 : Stmt(CXXForRangeStmtClass), ForLoc(FL), CoawaitLoc(CAL), ColonLoc(CL),
54 RParenLoc(RPL) {
55 SubExprs[INIT] = Init;
56 SubExprs[RANGE] = Range;
57 SubExprs[BEGINSTMT] = BeginStmt;
58 SubExprs[ENDSTMT] = EndStmt;
59 SubExprs[COND] = Cond;
60 SubExprs[INC] = Inc;
61 SubExprs[LOOPVAR] = LoopVar;
62 SubExprs[BODY] = Body;
63 }
64
getRangeInit()65 Expr *CXXForRangeStmt::getRangeInit() {
66 DeclStmt *RangeStmt = getRangeStmt();
67 VarDecl *RangeDecl = dyn_cast_or_null<VarDecl>(RangeStmt->getSingleDecl());
68 assert(RangeDecl && "for-range should have a single var decl");
69 return RangeDecl->getInit();
70 }
71
getRangeInit() const72 const Expr *CXXForRangeStmt::getRangeInit() const {
73 return const_cast<CXXForRangeStmt *>(this)->getRangeInit();
74 }
75
getLoopVariable()76 VarDecl *CXXForRangeStmt::getLoopVariable() {
77 Decl *LV = cast<DeclStmt>(getLoopVarStmt())->getSingleDecl();
78 assert(LV && "No loop variable in CXXForRangeStmt");
79 return cast<VarDecl>(LV);
80 }
81
getLoopVariable() const82 const VarDecl *CXXForRangeStmt::getLoopVariable() const {
83 return const_cast<CXXForRangeStmt *>(this)->getLoopVariable();
84 }
85
Create(const ASTContext & C,CoroutineBodyStmt::CtorArgs const & Args)86 CoroutineBodyStmt *CoroutineBodyStmt::Create(
87 const ASTContext &C, CoroutineBodyStmt::CtorArgs const &Args) {
88 std::size_t Size = totalSizeToAlloc<Stmt *>(
89 CoroutineBodyStmt::FirstParamMove + Args.ParamMoves.size());
90
91 void *Mem = C.Allocate(Size, alignof(CoroutineBodyStmt));
92 return new (Mem) CoroutineBodyStmt(Args);
93 }
94
Create(const ASTContext & C,EmptyShell,unsigned NumParams)95 CoroutineBodyStmt *CoroutineBodyStmt::Create(const ASTContext &C, EmptyShell,
96 unsigned NumParams) {
97 std::size_t Size = totalSizeToAlloc<Stmt *>(
98 CoroutineBodyStmt::FirstParamMove + NumParams);
99
100 void *Mem = C.Allocate(Size, alignof(CoroutineBodyStmt));
101 auto *Result = new (Mem) CoroutineBodyStmt(CtorArgs());
102 Result->NumParams = NumParams;
103 auto *ParamBegin = Result->getStoredStmts() + SubStmt::FirstParamMove;
104 std::uninitialized_fill(ParamBegin, ParamBegin + NumParams,
105 static_cast<Stmt *>(nullptr));
106 return Result;
107 }
108
CoroutineBodyStmt(CoroutineBodyStmt::CtorArgs const & Args)109 CoroutineBodyStmt::CoroutineBodyStmt(CoroutineBodyStmt::CtorArgs const &Args)
110 : Stmt(CoroutineBodyStmtClass), NumParams(Args.ParamMoves.size()) {
111 Stmt **SubStmts = getStoredStmts();
112 SubStmts[CoroutineBodyStmt::Body] = Args.Body;
113 SubStmts[CoroutineBodyStmt::Promise] = Args.Promise;
114 SubStmts[CoroutineBodyStmt::InitSuspend] = Args.InitialSuspend;
115 SubStmts[CoroutineBodyStmt::FinalSuspend] = Args.FinalSuspend;
116 SubStmts[CoroutineBodyStmt::OnException] = Args.OnException;
117 SubStmts[CoroutineBodyStmt::OnFallthrough] = Args.OnFallthrough;
118 SubStmts[CoroutineBodyStmt::Allocate] = Args.Allocate;
119 SubStmts[CoroutineBodyStmt::Deallocate] = Args.Deallocate;
120 SubStmts[CoroutineBodyStmt::ReturnValue] = Args.ReturnValue;
121 SubStmts[CoroutineBodyStmt::ReturnStmt] = Args.ReturnStmt;
122 SubStmts[CoroutineBodyStmt::ReturnStmtOnAllocFailure] =
123 Args.ReturnStmtOnAllocFailure;
124 std::copy(Args.ParamMoves.begin(), Args.ParamMoves.end(),
125 const_cast<Stmt **>(getParamMoves().data()));
126 }
127