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
17using namespace clang;
18
19QualType CXXCatchStmt::getCaughtType() const {
20 if (ExceptionDecl)
21 return ExceptionDecl->getType();
22 return QualType();
23}
24
25CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, SourceLocation tryLoc,
26 CompoundStmt *tryBlock,
27 ArrayRef<Stmt *> handlers) {
28 const size_t Size = totalSizeToAlloc<Stmt *>(Counts: handlers.size() + 1);
29 void *Mem = C.Allocate(Size, Align: alignof(CXXTryStmt));
30 return new (Mem) CXXTryStmt(tryLoc, tryBlock, handlers);
31}
32
33CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, EmptyShell Empty,
34 unsigned numHandlers) {
35 const size_t Size = totalSizeToAlloc<Stmt *>(Counts: numHandlers + 1);
36 void *Mem = C.Allocate(Size, Align: alignof(CXXTryStmt));
37 return new (Mem) CXXTryStmt(Empty, numHandlers);
38}
39
40CXXTryStmt::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(first: handlers.begin(), last: handlers.end(), result: Stmts + 1);
46}
47
48CXXForRangeStmt::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
66Expr *CXXForRangeStmt::getRangeInit() {
67 DeclStmt *RangeStmt = getRangeStmt();
68 VarDecl *RangeDecl = dyn_cast_or_null<VarDecl>(Val: RangeStmt->getSingleDecl());
69 assert(RangeDecl && "for-range should have a single var decl");
70 return RangeDecl->getInit();
71}
72
73const Expr *CXXForRangeStmt::getRangeInit() const {
74 return const_cast<CXXForRangeStmt *>(this)->getRangeInit();
75}
76
77VarDecl *CXXForRangeStmt::getLoopVariable() {
78 Decl *LV = cast<DeclStmt>(Val: getLoopVarStmt())->getSingleDecl();
79 assert(LV && "No loop variable in CXXForRangeStmt");
80 return cast<VarDecl>(Val: LV);
81}
82
83const VarDecl *CXXForRangeStmt::getLoopVariable() const {
84 return const_cast<CXXForRangeStmt *>(this)->getLoopVariable();
85}
86
87CoroutineBodyStmt *CoroutineBodyStmt::Create(
88 const ASTContext &C, CoroutineBodyStmt::CtorArgs const &Args) {
89 std::size_t Size = totalSizeToAlloc<Stmt *>(
90 Counts: CoroutineBodyStmt::FirstParamMove + Args.ParamMoves.size());
91
92 void *Mem = C.Allocate(Size, Align: alignof(CoroutineBodyStmt));
93 return new (Mem) CoroutineBodyStmt(Args);
94}
95
96CoroutineBodyStmt *CoroutineBodyStmt::Create(const ASTContext &C, EmptyShell,
97 unsigned NumParams) {
98 std::size_t Size = totalSizeToAlloc<Stmt *>(
99 Counts: CoroutineBodyStmt::FirstParamMove + NumParams);
100
101 void *Mem = C.Allocate(Size, Align: alignof(CoroutineBodyStmt));
102 auto *Result = new (Mem) CoroutineBodyStmt(CtorArgs());
103 Result->NumParams = NumParams;
104 auto *ParamBegin = Result->getStoredStmts() + SubStmt::FirstParamMove;
105 std::uninitialized_fill(first: ParamBegin, last: ParamBegin + NumParams,
106 x: static_cast<Stmt *>(nullptr));
107 return Result;
108}
109
110CoroutineBodyStmt::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(first: Args.ParamMoves.begin(), last: Args.ParamMoves.end(),
127 result: const_cast<Stmt **>(getParamMoves().data()));
128}
129

source code of clang/lib/AST/StmtCXX.cpp