1 //===--- StmtCXX.cpp - Classes for representing C++ statements ------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the subclesses of Stmt class declared in StmtCXX.h
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/AST/StmtCXX.h"
15 
16 #include "clang/AST/ASTContext.h"
17 
18 using namespace clang;
19 
20 QualType CXXCatchStmt::getCaughtType() const {
21   if (ExceptionDecl)
22     return ExceptionDecl->getType();
23   return QualType();
24 }
25 
26 CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, SourceLocation tryLoc,
27                                Stmt *tryBlock, ArrayRef<Stmt *> handlers) {
28   std::size_t Size = sizeof(CXXTryStmt);
29   Size += ((handlers.size() + 1) * sizeof(Stmt *));
30 
31   void *Mem = C.Allocate(Size, llvm::alignOf<CXXTryStmt>());
32   return new (Mem) CXXTryStmt(tryLoc, tryBlock, handlers);
33 }
34 
35 CXXTryStmt *CXXTryStmt::Create(const ASTContext &C, EmptyShell Empty,
36                                unsigned numHandlers) {
37   std::size_t Size = sizeof(CXXTryStmt);
38   Size += ((numHandlers + 1) * sizeof(Stmt *));
39 
40   void *Mem = C.Allocate(Size, llvm::alignOf<CXXTryStmt>());
41   return new (Mem) CXXTryStmt(Empty, numHandlers);
42 }
43 
44 CXXTryStmt::CXXTryStmt(SourceLocation tryLoc, Stmt *tryBlock,
45                        ArrayRef<Stmt *> handlers)
46     : Stmt(CXXTryStmtClass), TryLoc(tryLoc), NumHandlers(handlers.size()) {
47   Stmt **Stmts = reinterpret_cast<Stmt **>(this + 1);
48   Stmts[0] = tryBlock;
49   std::copy(handlers.begin(), handlers.end(), Stmts + 1);
50 }
51 
52 CXXForRangeStmt::CXXForRangeStmt(DeclStmt *Range, DeclStmt *BeginEndStmt,
53                                  Expr *Cond, Expr *Inc, DeclStmt *LoopVar,
54                                  Stmt *Body, SourceLocation FL,
55                                  SourceLocation CL, SourceLocation RPL)
56     : Stmt(CXXForRangeStmtClass), ForLoc(FL), ColonLoc(CL), RParenLoc(RPL) {
57   SubExprs[RANGE] = Range;
58   SubExprs[BEGINEND] = BeginEndStmt;
59   SubExprs[COND] = Cond;
60   SubExprs[INC] = Inc;
61   SubExprs[LOOPVAR] = LoopVar;
62   SubExprs[BODY] = Body;
63 }
64 
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 
72 const Expr *CXXForRangeStmt::getRangeInit() const {
73   return const_cast<CXXForRangeStmt *>(this)->getRangeInit();
74 }
75 
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 
82 const VarDecl *CXXForRangeStmt::getLoopVariable() const {
83   return const_cast<CXXForRangeStmt *>(this)->getLoopVariable();
84 }
85