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,CompoundStmt * tryBlock,ArrayRef<Stmt * > handlers)25 CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, SourceLocation tryLoc,
26 CompoundStmt *tryBlock,
27 ArrayRef<Stmt *> handlers) {
28 const size_t Size = totalSizeToAlloc<Stmt *>(handlers.size() + 1);
29 void *Mem = C.Allocate(Size, alignof(CXXTryStmt));
30 return new (Mem) CXXTryStmt(tryLoc, tryBlock, handlers);
31 }
32
Create(const ASTContext & C,EmptyShell Empty,unsigned numHandlers)33 CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, EmptyShell Empty,
34 unsigned numHandlers) {
35 const size_t Size = totalSizeToAlloc<Stmt *>(numHandlers + 1);
36 void *Mem = C.Allocate(Size, alignof(CXXTryStmt));
37 return new (Mem) CXXTryStmt(Empty, numHandlers);
38 }
39
CXXTryStmt(SourceLocation tryLoc,CompoundStmt * tryBlock,ArrayRef<Stmt * > handlers)40 CXXTryStmt::CXXTryStmt(SourceLocation tryLoc, CompoundStmt *tryBlock,
41 ArrayRef<Stmt *> handlers)
42 : Stmt(CXXTryStmtClass), TryLoc(tryLoc), NumHandlers(handlers.size()) {
43 Stmt **Stmts = getStmts();
44 Stmts[0] = tryBlock;
45 std::copy(handlers.begin(), handlers.end(), Stmts + 1);
46 }
47
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)48 CXXForRangeStmt::CXXForRangeStmt(Stmt *Init, DeclStmt *Range,
49 DeclStmt *BeginStmt, DeclStmt *EndStmt,
50 Expr *Cond, Expr *Inc, DeclStmt *LoopVar,
51 Stmt *Body, SourceLocation FL,
52 SourceLocation CAL, SourceLocation CL,
53 SourceLocation RPL)
54 : Stmt(CXXForRangeStmtClass), ForLoc(FL), CoawaitLoc(CAL), ColonLoc(CL),
55 RParenLoc(RPL) {
56 SubExprs[INIT] = Init;
57 SubExprs[RANGE] = Range;
58 SubExprs[BEGINSTMT] = BeginStmt;
59 SubExprs[ENDSTMT] = EndStmt;
60 SubExprs[COND] = Cond;
61 SubExprs[INC] = Inc;
62 SubExprs[LOOPVAR] = LoopVar;
63 SubExprs[BODY] = Body;
64 }
65
getRangeInit()66 Expr *CXXForRangeStmt::getRangeInit() {
67 DeclStmt *RangeStmt = getRangeStmt();
68 VarDecl *RangeDecl = dyn_cast_or_null<VarDecl>(RangeStmt->getSingleDecl());
69 assert(RangeDecl && "for-range should have a single var decl");
70 return RangeDecl->getInit();
71 }
72
getRangeInit() const73 const Expr *CXXForRangeStmt::getRangeInit() const {
74 return const_cast<CXXForRangeStmt *>(this)->getRangeInit();
75 }
76
getLoopVariable()77 VarDecl *CXXForRangeStmt::getLoopVariable() {
78 Decl *LV = cast<DeclStmt>(getLoopVarStmt())->getSingleDecl();
79 assert(LV && "No loop variable in CXXForRangeStmt");
80 return cast<VarDecl>(LV);
81 }
82
getLoopVariable() const83 const VarDecl *CXXForRangeStmt::getLoopVariable() const {
84 return const_cast<CXXForRangeStmt *>(this)->getLoopVariable();
85 }
86
Create(const ASTContext & C,CoroutineBodyStmt::CtorArgs const & Args)87 CoroutineBodyStmt *CoroutineBodyStmt::Create(
88 const ASTContext &C, CoroutineBodyStmt::CtorArgs const &Args) {
89 std::size_t Size = totalSizeToAlloc<Stmt *>(
90 CoroutineBodyStmt::FirstParamMove + Args.ParamMoves.size());
91
92 void *Mem = C.Allocate(Size, alignof(CoroutineBodyStmt));
93 return new (Mem) CoroutineBodyStmt(Args);
94 }
95
Create(const ASTContext & C,EmptyShell,unsigned NumParams)96 CoroutineBodyStmt *CoroutineBodyStmt::Create(const ASTContext &C, EmptyShell,
97 unsigned NumParams) {
98 std::size_t Size = totalSizeToAlloc<Stmt *>(
99 CoroutineBodyStmt::FirstParamMove + NumParams);
100
101 void *Mem = C.Allocate(Size, alignof(CoroutineBodyStmt));
102 auto *Result = new (Mem) CoroutineBodyStmt(CtorArgs());
103 Result->NumParams = NumParams;
104 auto *ParamBegin = Result->getStoredStmts() + SubStmt::FirstParamMove;
105 std::uninitialized_fill(ParamBegin, ParamBegin + NumParams,
106 static_cast<Stmt *>(nullptr));
107 return Result;
108 }
109
CoroutineBodyStmt(CoroutineBodyStmt::CtorArgs const & Args)110 CoroutineBodyStmt::CoroutineBodyStmt(CoroutineBodyStmt::CtorArgs const &Args)
111 : Stmt(CoroutineBodyStmtClass), NumParams(Args.ParamMoves.size()) {
112 Stmt **SubStmts = getStoredStmts();
113 SubStmts[CoroutineBodyStmt::Body] = Args.Body;
114 SubStmts[CoroutineBodyStmt::Promise] = Args.Promise;
115 SubStmts[CoroutineBodyStmt::InitSuspend] = Args.InitialSuspend;
116 SubStmts[CoroutineBodyStmt::FinalSuspend] = Args.FinalSuspend;
117 SubStmts[CoroutineBodyStmt::OnException] = Args.OnException;
118 SubStmts[CoroutineBodyStmt::OnFallthrough] = Args.OnFallthrough;
119 SubStmts[CoroutineBodyStmt::Allocate] = Args.Allocate;
120 SubStmts[CoroutineBodyStmt::Deallocate] = Args.Deallocate;
121 SubStmts[CoroutineBodyStmt::ResultDecl] = Args.ResultDecl;
122 SubStmts[CoroutineBodyStmt::ReturnValue] = Args.ReturnValue;
123 SubStmts[CoroutineBodyStmt::ReturnStmt] = Args.ReturnStmt;
124 SubStmts[CoroutineBodyStmt::ReturnStmtOnAllocFailure] =
125 Args.ReturnStmtOnAllocFailure;
126 std::copy(Args.ParamMoves.begin(), Args.ParamMoves.end(),
127 const_cast<Stmt **>(getParamMoves().data()));
128 }
129