clang 17.0.0git
StmtCXX.cpp
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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
16
17using namespace clang;
18
20 if (ExceptionDecl)
21 return ExceptionDecl->getType();
22 return QualType();
23}
24
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
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
39CXXTryStmt::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
48 DeclStmt *BeginStmt, DeclStmt *EndStmt,
49 Expr *Cond, Expr *Inc, DeclStmt *LoopVar,
50 Stmt *Body, SourceLocation FL,
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
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
73 return const_cast<CXXForRangeStmt *>(this)->getRangeInit();
74}
75
77 Decl *LV = cast<DeclStmt>(getLoopVarStmt())->getSingleDecl();
78 assert(LV && "No loop variable in CXXForRangeStmt");
79 return cast<VarDecl>(LV);
80}
81
83 return const_cast<CXXForRangeStmt *>(this)->getLoopVariable();
84}
85
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
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
109CoroutineBodyStmt::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] =
124 std::copy(Args.ParamMoves.begin(), Args.ParamMoves.end(),
125 const_cast<Stmt **>(getParamMoves().data()));
126}
Defines the clang::ASTContext interface.
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:182
QualType getCaughtType() const
Definition: StmtCXX.cpp:19
CXXForRangeStmt - This represents C++0x [stmt.ranged]'s ranged for statement, represented as 'for (ra...
Definition: StmtCXX.h:134
CXXForRangeStmt(Stmt *InitStmt, DeclStmt *Range, DeclStmt *Begin, DeclStmt *End, Expr *Cond, Expr *Inc, DeclStmt *LoopVar, Stmt *Body, SourceLocation FL, SourceLocation CAL, SourceLocation CL, SourceLocation RPL)
Definition: StmtCXX.cpp:47
DeclStmt * getLoopVarStmt()
Definition: StmtCXX.h:168
DeclStmt * getRangeStmt()
Definition: StmtCXX.h:161
VarDecl * getLoopVariable()
Definition: StmtCXX.cpp:76
CXXTryStmt - A C++ try block, including all handlers.
Definition: StmtCXX.h:69
static CXXTryStmt * Create(const ASTContext &C, SourceLocation tryLoc, Stmt *tryBlock, ArrayRef< Stmt * > handlers)
Definition: StmtCXX.cpp:25
Represents the body of a coroutine.
Definition: StmtCXX.h:319
static CoroutineBodyStmt * Create(const ASTContext &C, CtorArgs const &Args)
Definition: StmtCXX.cpp:86
ArrayRef< Stmt const * > getParamMoves() const
Definition: StmtCXX.h:419
DeclStmt - Adaptor class for mixing declarations with statements and expressions.
Definition: Stmt.h:1311
const Decl * getSingleDecl() const
Definition: Stmt.h:1326
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:83
This represents one expression.
Definition: Expr.h:110
A (possibly-)qualified type.
Definition: Type.h:736
Encodes a location in the source.
Stmt - This represents one statement.
Definition: Stmt.h:72
QualType getType() const
Definition: Decl.h:714
Represents a variable declaration or definition.
Definition: Decl.h:915
const Expr * getInit() const
Definition: Decl.h:1327
@ C
Languages that the frontend can parse and compile.
@ Result
The result type of a method or function.
ArrayRef< Stmt * > ParamMoves
Definition: StmtCXX.h:358
A placeholder type used to construct an empty shell of a type, that will be filled in later (e....
Definition: Stmt.h:1117