Ted Kremenek | a758d09 | 2007-08-24 20:21:10 +0000 | [diff] [blame] | 1 | //===--- ExprCXX.cpp - (C++) Expression AST Node Implementation -----------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 0bc735f | 2007-12-29 19:59:25 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Ted Kremenek | a758d09 | 2007-08-24 20:21:10 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements the subclesses of Expr class declared in ExprCXX.h |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
Douglas Gregor | b460980 | 2008-11-14 16:09:21 +0000 | [diff] [blame] | 14 | #include "clang/Basic/IdentifierTable.h" |
| 15 | #include "clang/AST/DeclCXX.h" |
Ted Kremenek | a758d09 | 2007-08-24 20:21:10 +0000 | [diff] [blame] | 16 | #include "clang/AST/ExprCXX.h" |
| 17 | using namespace clang; |
| 18 | |
Argyrios Kyrtzidis | 4189a76 | 2008-09-10 02:14:49 +0000 | [diff] [blame] | 19 | void CXXConditionDeclExpr::Destroy(ASTContext& C) { |
| 20 | getVarDecl()->Destroy(C); |
| 21 | delete this; |
| 22 | } |
Argyrios Kyrtzidis | 9e922b1 | 2008-09-09 23:47:53 +0000 | [diff] [blame] | 23 | |
| 24 | |
Ted Kremenek | a758d09 | 2007-08-24 20:21:10 +0000 | [diff] [blame] | 25 | //===----------------------------------------------------------------------===// |
| 26 | // Child Iterators for iterating over subexpressions/substatements |
| 27 | //===----------------------------------------------------------------------===// |
| 28 | |
Sebastian Redl | c42e118 | 2008-11-11 11:37:55 +0000 | [diff] [blame] | 29 | // CXXTypeidExpr - has child iterators if the operand is an expression |
| 30 | Stmt::child_iterator CXXTypeidExpr::child_begin() { |
Sebastian Redl | d457589 | 2008-12-03 23:17:54 +0000 | [diff] [blame] | 31 | return isTypeOperand() ? child_iterator() : &Operand.Ex; |
Sebastian Redl | c42e118 | 2008-11-11 11:37:55 +0000 | [diff] [blame] | 32 | } |
| 33 | Stmt::child_iterator CXXTypeidExpr::child_end() { |
Sebastian Redl | d457589 | 2008-12-03 23:17:54 +0000 | [diff] [blame] | 34 | return isTypeOperand() ? child_iterator() : &Operand.Ex+1; |
Sebastian Redl | c42e118 | 2008-11-11 11:37:55 +0000 | [diff] [blame] | 35 | } |
Ted Kremenek | a758d09 | 2007-08-24 20:21:10 +0000 | [diff] [blame] | 36 | |
Ted Kremenek | a758d09 | 2007-08-24 20:21:10 +0000 | [diff] [blame] | 37 | // CXXBoolLiteralExpr |
Ted Kremenek | 9ac5928 | 2007-10-18 23:28:49 +0000 | [diff] [blame] | 38 | Stmt::child_iterator CXXBoolLiteralExpr::child_begin() { |
| 39 | return child_iterator(); |
| 40 | } |
| 41 | Stmt::child_iterator CXXBoolLiteralExpr::child_end() { |
| 42 | return child_iterator(); |
| 43 | } |
Chris Lattner | 50dd289 | 2008-02-26 00:51:44 +0000 | [diff] [blame] | 44 | |
Douglas Gregor | 796da18 | 2008-11-04 14:32:21 +0000 | [diff] [blame] | 45 | // CXXThisExpr |
| 46 | Stmt::child_iterator CXXThisExpr::child_begin() { return child_iterator(); } |
| 47 | Stmt::child_iterator CXXThisExpr::child_end() { return child_iterator(); } |
| 48 | |
Chris Lattner | 50dd289 | 2008-02-26 00:51:44 +0000 | [diff] [blame] | 49 | // CXXThrowExpr |
Ted Kremenek | 1060aff | 2008-06-17 03:11:08 +0000 | [diff] [blame] | 50 | Stmt::child_iterator CXXThrowExpr::child_begin() { return &Op; } |
Chris Lattner | 50dd289 | 2008-02-26 00:51:44 +0000 | [diff] [blame] | 51 | Stmt::child_iterator CXXThrowExpr::child_end() { |
| 52 | // If Op is 0, we are processing throw; which has no children. |
Ted Kremenek | 1060aff | 2008-06-17 03:11:08 +0000 | [diff] [blame] | 53 | return Op ? &Op+1 : &Op; |
Chris Lattner | 50dd289 | 2008-02-26 00:51:44 +0000 | [diff] [blame] | 54 | } |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 55 | |
| 56 | // CXXDefaultArgExpr |
| 57 | Stmt::child_iterator CXXDefaultArgExpr::child_begin() { |
Chris Lattner | 8123a95 | 2008-04-10 02:22:51 +0000 | [diff] [blame] | 58 | return child_iterator(); |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 59 | } |
| 60 | Stmt::child_iterator CXXDefaultArgExpr::child_end() { |
Chris Lattner | 8123a95 | 2008-04-10 02:22:51 +0000 | [diff] [blame] | 61 | return child_iterator(); |
Chris Lattner | 0442108 | 2008-04-08 04:40:51 +0000 | [diff] [blame] | 62 | } |
Argyrios Kyrtzidis | 987a14b | 2008-08-22 15:38:55 +0000 | [diff] [blame] | 63 | |
Douglas Gregor | 506ae41 | 2009-01-16 18:33:17 +0000 | [diff] [blame^] | 64 | // CXXTemporaryObjectExpr |
| 65 | Stmt::child_iterator CXXTemporaryObjectExpr::child_begin() { |
| 66 | return child_iterator(Args); |
| 67 | } |
| 68 | Stmt::child_iterator CXXTemporaryObjectExpr::child_end() { |
| 69 | return child_iterator(Args + NumArgs); |
| 70 | } |
| 71 | |
Argyrios Kyrtzidis | 987a14b | 2008-08-22 15:38:55 +0000 | [diff] [blame] | 72 | // CXXZeroInitValueExpr |
| 73 | Stmt::child_iterator CXXZeroInitValueExpr::child_begin() { |
| 74 | return child_iterator(); |
| 75 | } |
| 76 | Stmt::child_iterator CXXZeroInitValueExpr::child_end() { |
| 77 | return child_iterator(); |
| 78 | } |
Argyrios Kyrtzidis | 9e922b1 | 2008-09-09 23:47:53 +0000 | [diff] [blame] | 79 | |
| 80 | // CXXConditionDeclExpr |
| 81 | Stmt::child_iterator CXXConditionDeclExpr::child_begin() { |
| 82 | return getVarDecl(); |
| 83 | } |
| 84 | Stmt::child_iterator CXXConditionDeclExpr::child_end() { |
| 85 | return child_iterator(); |
| 86 | } |
Douglas Gregor | 49badde | 2008-10-27 19:41:14 +0000 | [diff] [blame] | 87 | |
Sebastian Redl | 4c5d320 | 2008-11-21 19:14:01 +0000 | [diff] [blame] | 88 | // CXXNewExpr |
| 89 | CXXNewExpr::CXXNewExpr(bool globalNew, FunctionDecl *operatorNew, |
| 90 | Expr **placementArgs, unsigned numPlaceArgs, |
Sebastian Redl | cee63fb | 2008-12-02 14:43:59 +0000 | [diff] [blame] | 91 | bool parenTypeId, Expr *arraySize, |
Sebastian Redl | 4c5d320 | 2008-11-21 19:14:01 +0000 | [diff] [blame] | 92 | CXXConstructorDecl *constructor, bool initializer, |
| 93 | Expr **constructorArgs, unsigned numConsArgs, |
| 94 | FunctionDecl *operatorDelete, QualType ty, |
| 95 | SourceLocation startLoc, SourceLocation endLoc) |
| 96 | : Expr(CXXNewExprClass, ty), GlobalNew(globalNew), ParenTypeId(parenTypeId), |
Sebastian Redl | cee63fb | 2008-12-02 14:43:59 +0000 | [diff] [blame] | 97 | Initializer(initializer), Array(arraySize), NumPlacementArgs(numPlaceArgs), |
Sebastian Redl | 4c5d320 | 2008-11-21 19:14:01 +0000 | [diff] [blame] | 98 | NumConstructorArgs(numConsArgs), OperatorNew(operatorNew), |
Sebastian Redl | cee63fb | 2008-12-02 14:43:59 +0000 | [diff] [blame] | 99 | OperatorDelete(operatorDelete), Constructor(constructor), |
Sebastian Redl | 4c5d320 | 2008-11-21 19:14:01 +0000 | [diff] [blame] | 100 | StartLoc(startLoc), EndLoc(endLoc) |
| 101 | { |
Sebastian Redl | cee63fb | 2008-12-02 14:43:59 +0000 | [diff] [blame] | 102 | unsigned TotalSize = Array + NumPlacementArgs + NumConstructorArgs; |
Sebastian Redl | 4c5d320 | 2008-11-21 19:14:01 +0000 | [diff] [blame] | 103 | SubExprs = new Stmt*[TotalSize]; |
| 104 | unsigned i = 0; |
Sebastian Redl | cee63fb | 2008-12-02 14:43:59 +0000 | [diff] [blame] | 105 | if (Array) |
| 106 | SubExprs[i++] = arraySize; |
| 107 | for (unsigned j = 0; j < NumPlacementArgs; ++j) |
Sebastian Redl | 4c5d320 | 2008-11-21 19:14:01 +0000 | [diff] [blame] | 108 | SubExprs[i++] = placementArgs[j]; |
Sebastian Redl | cee63fb | 2008-12-02 14:43:59 +0000 | [diff] [blame] | 109 | for (unsigned j = 0; j < NumConstructorArgs; ++j) |
Sebastian Redl | 4c5d320 | 2008-11-21 19:14:01 +0000 | [diff] [blame] | 110 | SubExprs[i++] = constructorArgs[j]; |
| 111 | assert(i == TotalSize); |
| 112 | } |
| 113 | |
| 114 | Stmt::child_iterator CXXNewExpr::child_begin() { return &SubExprs[0]; } |
| 115 | Stmt::child_iterator CXXNewExpr::child_end() { |
Sebastian Redl | cee63fb | 2008-12-02 14:43:59 +0000 | [diff] [blame] | 116 | return &SubExprs[0] + Array + getNumPlacementArgs() + getNumConstructorArgs(); |
Sebastian Redl | 4c5d320 | 2008-11-21 19:14:01 +0000 | [diff] [blame] | 117 | } |
| 118 | |
| 119 | // CXXDeleteExpr |
| 120 | Stmt::child_iterator CXXDeleteExpr::child_begin() { return &Argument; } |
| 121 | Stmt::child_iterator CXXDeleteExpr::child_end() { return &Argument+1; } |
| 122 | |
Douglas Gregor | 5c37de7 | 2008-12-06 00:22:45 +0000 | [diff] [blame] | 123 | // CXXDependentNameExpr |
| 124 | Stmt::child_iterator CXXDependentNameExpr::child_begin() { |
| 125 | return child_iterator(); |
| 126 | } |
| 127 | Stmt::child_iterator CXXDependentNameExpr::child_end() { |
| 128 | return child_iterator(); |
| 129 | } |
| 130 | |
Sebastian Redl | 64b45f7 | 2009-01-05 20:52:13 +0000 | [diff] [blame] | 131 | // UnaryTypeTraitExpr |
| 132 | Stmt::child_iterator UnaryTypeTraitExpr::child_begin() { |
| 133 | return child_iterator(); |
| 134 | } |
| 135 | Stmt::child_iterator UnaryTypeTraitExpr::child_end() { |
| 136 | return child_iterator(); |
| 137 | } |
| 138 | |
| 139 | bool UnaryTypeTraitExpr::Evaluate() const { |
| 140 | switch(UTT) { |
| 141 | default: assert(false && "Unknown type trait or not implemented"); |
| 142 | case UTT_IsPOD: return QueriedType->isPODType(); |
| 143 | case UTT_IsClass: // Fallthrough |
| 144 | case UTT_IsUnion: |
| 145 | if (const RecordType *Record = QueriedType->getAsRecordType()) { |
| 146 | bool Union = Record->getDecl()->isUnion(); |
| 147 | return UTT == UTT_IsUnion ? Union : !Union; |
| 148 | } |
| 149 | return false; |
| 150 | case UTT_IsEnum: return QueriedType->isEnumeralType(); |
| 151 | case UTT_IsPolymorphic: |
| 152 | if (const RecordType *Record = QueriedType->getAsRecordType()) { |
| 153 | // Type traits are only parsed in C++, so we've got CXXRecords. |
| 154 | return cast<CXXRecordDecl>(Record->getDecl())->isPolymorphic(); |
| 155 | } |
| 156 | return false; |
| 157 | } |
| 158 | } |
| 159 | |
Douglas Gregor | b460980 | 2008-11-14 16:09:21 +0000 | [diff] [blame] | 160 | OverloadedOperatorKind CXXOperatorCallExpr::getOperator() const { |
| 161 | // All simple function calls (e.g. func()) are implicitly cast to pointer to |
| 162 | // function. As a result, we try and obtain the DeclRefExpr from the |
| 163 | // ImplicitCastExpr. |
| 164 | const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(getCallee()); |
| 165 | if (!ICE) // FIXME: deal with more complex calls (e.g. (func)(), (*func)()). |
| 166 | return OO_None; |
| 167 | |
| 168 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(ICE->getSubExpr()); |
| 169 | if (!DRE) |
| 170 | return OO_None; |
| 171 | |
| 172 | if (const FunctionDecl *FDecl = dyn_cast<FunctionDecl>(DRE->getDecl())) |
Douglas Gregor | e94ca9e4 | 2008-11-18 14:39:36 +0000 | [diff] [blame] | 173 | return FDecl->getDeclName().getCXXOverloadedOperator(); |
Douglas Gregor | b460980 | 2008-11-14 16:09:21 +0000 | [diff] [blame] | 174 | else if (const OverloadedFunctionDecl *Ovl |
| 175 | = dyn_cast<OverloadedFunctionDecl>(DRE->getDecl())) |
Douglas Gregor | e94ca9e4 | 2008-11-18 14:39:36 +0000 | [diff] [blame] | 176 | return Ovl->getDeclName().getCXXOverloadedOperator(); |
Douglas Gregor | b460980 | 2008-11-14 16:09:21 +0000 | [diff] [blame] | 177 | else |
| 178 | return OO_None; |
| 179 | } |
| 180 | |
| 181 | SourceRange CXXOperatorCallExpr::getSourceRange() const { |
| 182 | OverloadedOperatorKind Kind = getOperator(); |
| 183 | if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) { |
| 184 | if (getNumArgs() == 1) |
| 185 | // Prefix operator |
| 186 | return SourceRange(getOperatorLoc(), |
| 187 | getArg(0)->getSourceRange().getEnd()); |
| 188 | else |
| 189 | // Postfix operator |
| 190 | return SourceRange(getArg(0)->getSourceRange().getEnd(), |
| 191 | getOperatorLoc()); |
| 192 | } else if (Kind == OO_Call) { |
| 193 | return SourceRange(getArg(0)->getSourceRange().getBegin(), getRParenLoc()); |
| 194 | } else if (Kind == OO_Subscript) { |
| 195 | return SourceRange(getArg(0)->getSourceRange().getBegin(), getRParenLoc()); |
| 196 | } else if (getNumArgs() == 1) { |
| 197 | return SourceRange(getOperatorLoc(), getArg(0)->getSourceRange().getEnd()); |
| 198 | } else if (getNumArgs() == 2) { |
| 199 | return SourceRange(getArg(0)->getSourceRange().getBegin(), |
| 200 | getArg(1)->getSourceRange().getEnd()); |
| 201 | } else { |
| 202 | return SourceRange(); |
| 203 | } |
| 204 | } |
| 205 | |
Douglas Gregor | 88a3514 | 2008-12-22 05:46:06 +0000 | [diff] [blame] | 206 | Expr *CXXMemberCallExpr::getImplicitObjectArgument() { |
| 207 | if (MemberExpr *MemExpr = dyn_cast<MemberExpr>(getCallee()->IgnoreParens())) |
| 208 | return MemExpr->getBase(); |
| 209 | |
| 210 | // FIXME: Will eventually need to cope with member pointers. |
| 211 | return 0; |
| 212 | } |
| 213 | |
Douglas Gregor | 49badde | 2008-10-27 19:41:14 +0000 | [diff] [blame] | 214 | //===----------------------------------------------------------------------===// |
| 215 | // Named casts |
| 216 | //===----------------------------------------------------------------------===// |
| 217 | |
| 218 | /// getCastName - Get the name of the C++ cast being used, e.g., |
| 219 | /// "static_cast", "dynamic_cast", "reinterpret_cast", or |
| 220 | /// "const_cast". The returned pointer must not be freed. |
| 221 | const char *CXXNamedCastExpr::getCastName() const { |
| 222 | switch (getStmtClass()) { |
| 223 | case CXXStaticCastExprClass: return "static_cast"; |
| 224 | case CXXDynamicCastExprClass: return "dynamic_cast"; |
| 225 | case CXXReinterpretCastExprClass: return "reinterpret_cast"; |
| 226 | case CXXConstCastExprClass: return "const_cast"; |
| 227 | default: return "<invalid cast>"; |
| 228 | } |
| 229 | } |
Douglas Gregor | 506ae41 | 2009-01-16 18:33:17 +0000 | [diff] [blame^] | 230 | |
| 231 | CXXTemporaryObjectExpr::CXXTemporaryObjectExpr(CXXConstructorDecl *Cons, |
| 232 | QualType writtenTy, |
| 233 | SourceLocation tyBeginLoc, |
| 234 | Expr **Args, |
| 235 | unsigned NumArgs, |
| 236 | SourceLocation rParenLoc) |
| 237 | : Expr(CXXTemporaryObjectExprClass, writtenTy), |
| 238 | TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc), |
| 239 | Constructor(Cons), Args(0), NumArgs(NumArgs) { |
| 240 | if (NumArgs > 0) { |
| 241 | this->Args = new Stmt*[NumArgs]; |
| 242 | for (unsigned i = 0; i < NumArgs; ++i) |
| 243 | this->Args[i] = Args[i]; |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | CXXTemporaryObjectExpr::~CXXTemporaryObjectExpr() { |
| 248 | delete [] Args; |
| 249 | } |