Expr.cpp revision 224605064a4ef87d1c3d35ad1cb363f8b534012b
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- Expr.cpp - Expression AST Node Implementation --------------------===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file implements the Expr class and subclasses. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar#include "clang/AST/Expr.h" 15a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner#include "clang/AST/APValue.h" 162eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner#include "clang/AST/ASTContext.h" 17a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner#include "clang/AST/DeclObjC.h" 1898cd599ee8a9b259ed7388ee2921a20d97658864Douglas Gregor#include "clang/AST/DeclCXX.h" 19aaba5e346dffdbad5d1c42765a89e4a7afb0da67Douglas Gregor#include "clang/AST/DeclTemplate.h" 20e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/RecordLayout.h" 215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/StmtVisitor.h" 22da5a6b6d9fd52899499d5b7b46273ec844dcaa6eChris Lattner#include "clang/Basic/TargetInfo.h" 235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Primary Expressions. 275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 29da8249e57f3badecf925571881fe57243935c6c1Chris Lattner/// getValueAsApproximateDouble - This returns the value as an inaccurate 30da8249e57f3badecf925571881fe57243935c6c1Chris Lattner/// double. Note that this may cause loss of precision, but is useful for 31da8249e57f3badecf925571881fe57243935c6c1Chris Lattner/// debugging dumps, etc. 32da8249e57f3badecf925571881fe57243935c6c1Chris Lattnerdouble FloatingLiteral::getValueAsApproximateDouble() const { 33da8249e57f3badecf925571881fe57243935c6c1Chris Lattner llvm::APFloat V = getValue(); 34ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen bool ignored; 35ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen V.convert(llvm::APFloat::IEEEdouble, llvm::APFloat::rmNearestTiesToEven, 36ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen &ignored); 37da8249e57f3badecf925571881fe57243935c6c1Chris Lattner return V.convertToDouble(); 38da8249e57f3badecf925571881fe57243935c6c1Chris Lattner} 39da8249e57f3badecf925571881fe57243935c6c1Chris Lattner 40da8249e57f3badecf925571881fe57243935c6c1Chris Lattner 416e94ef5696cfb005d3fc7bbac8dcf7690b64f0a5Ted KremenekStringLiteral::StringLiteral(ASTContext& C, const char *strData, 426e94ef5696cfb005d3fc7bbac8dcf7690b64f0a5Ted Kremenek unsigned byteLength, bool Wide, QualType t, 436e94ef5696cfb005d3fc7bbac8dcf7690b64f0a5Ted Kremenek SourceLocation firstLoc, 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation lastLoc) : 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Expr(StringLiteralClass, t) { 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // OPTIMIZE: could allocate this appended to the StringLiteral. 476e94ef5696cfb005d3fc7bbac8dcf7690b64f0a5Ted Kremenek char *AStrData = new (C, 1) char[byteLength]; 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer memcpy(AStrData, strData, byteLength); 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrData = AStrData; 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ByteLength = byteLength; 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IsWide = Wide; 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer firstTokLoc = firstLoc; 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer lastTokLoc = lastLoc; 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 566e94ef5696cfb005d3fc7bbac8dcf7690b64f0a5Ted Kremenekvoid StringLiteral::Destroy(ASTContext &C) { 576e94ef5696cfb005d3fc7bbac8dcf7690b64f0a5Ted Kremenek C.Deallocate(const_cast<char*>(StrData)); 586e94ef5696cfb005d3fc7bbac8dcf7690b64f0a5Ted Kremenek this->~StringLiteral(); 595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool UnaryOperator::isPostfix(Opcode Op) { 625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Op) { 635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PostInc: 645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PostDec: 655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 715a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenekbool UnaryOperator::isPrefix(Opcode Op) { 725a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek switch (Op) { 735a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek case PreInc: 745a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek case PreDec: 755a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek return true; 765a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek default: 775a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek return false; 785a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek } 795a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek} 805a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek 815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// corresponds to, e.g. "sizeof" or "[pre]++". 835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerconst char *UnaryOperator::getOpcodeStr(Opcode Op) { 845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Op) { 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: assert(0 && "Unknown unary operator"); 865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PostInc: return "++"; 875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PostDec: return "--"; 885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PreInc: return "++"; 895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PreDec: return "--"; 905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case AddrOf: return "&"; 915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Deref: return "*"; 925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Plus: return "+"; 935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Minus: return "-"; 945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Not: return "~"; 955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LNot: return "!"; 965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Real: return "__real"; 975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Imag: return "__imag"; 985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Extension: return "__extension__"; 9973d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner case OffsetOf: return "__builtin_offsetof"; 1005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Postfix Operators. 1055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 107b4609806e9232593ece09ce08b630836e825865cDouglas GregorCallExpr::CallExpr(StmtClass SC, Expr *fn, Expr **args, unsigned numargs, 108b4609806e9232593ece09ce08b630836e825865cDouglas Gregor QualType t, SourceLocation rparenloc) 109898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor : Expr(SC, t, 110898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor fn->isTypeDependent() || hasAnyTypeDependentArguments(args, numargs), 111898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor fn->isValueDependent() || hasAnyValueDependentArguments(args, numargs)), 112898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor NumArgs(numargs) { 113b4609806e9232593ece09ce08b630836e825865cDouglas Gregor SubExprs = new Stmt*[numargs+1]; 114b4609806e9232593ece09ce08b630836e825865cDouglas Gregor SubExprs[FN] = fn; 115b4609806e9232593ece09ce08b630836e825865cDouglas Gregor for (unsigned i = 0; i != numargs; ++i) 116b4609806e9232593ece09ce08b630836e825865cDouglas Gregor SubExprs[i+ARGS_START] = args[i]; 117b4609806e9232593ece09ce08b630836e825865cDouglas Gregor RParenLoc = rparenloc; 118b4609806e9232593ece09ce08b630836e825865cDouglas Gregor} 119e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerCallExpr::CallExpr(Expr *fn, Expr **args, unsigned numargs, QualType t, 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation rparenloc) 122898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor : Expr(CallExprClass, t, 123898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor fn->isTypeDependent() || hasAnyTypeDependentArguments(args, numargs), 124898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor fn->isValueDependent() || hasAnyValueDependentArguments(args, numargs)), 125898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor NumArgs(numargs) { 1265549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SubExprs = new Stmt*[numargs+1]; 12777ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek SubExprs[FN] = fn; 1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; i != numargs; ++i) 12977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek SubExprs[i+ARGS_START] = args[i]; 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer RParenLoc = rparenloc; 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 133d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner/// setNumArgs - This changes the number of arguments present in this call. 134d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner/// Any orphaned expressions are deleted by this, and any new operands are set 135d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner/// to null. 136d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattnervoid CallExpr::setNumArgs(unsigned NumArgs) { 137d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // No change, just return. 138d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner if (NumArgs == getNumArgs()) return; 139d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 140d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // If shrinking # arguments, just delete the extras and forgot them. 141d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner if (NumArgs < getNumArgs()) { 142d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner for (unsigned i = NumArgs, e = getNumArgs(); i != e; ++i) 143d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner delete getArg(i); 144d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner this->NumArgs = NumArgs; 145d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner return; 146d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner } 147d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 148d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // Otherwise, we are growing the # arguments. New an bigger argument array. 1495549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt **NewSubExprs = new Stmt*[NumArgs+1]; 150d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // Copy over args. 151d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner for (unsigned i = 0; i != getNumArgs()+ARGS_START; ++i) 152d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner NewSubExprs[i] = SubExprs[i]; 153d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // Null out new args. 154d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner for (unsigned i = getNumArgs()+ARGS_START; i != NumArgs+ARGS_START; ++i) 155d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner NewSubExprs[i] = 0; 156d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 157d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner delete[] SubExprs; 158d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner SubExprs = NewSubExprs; 159d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner this->NumArgs = NumArgs; 160d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner} 161d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 162cb888967400a03504c88acedd5248d6778a82f46Chris Lattner/// isBuiltinCall - If this is a call to a builtin, return the builtin ID. If 163cb888967400a03504c88acedd5248d6778a82f46Chris Lattner/// not, return 0. 164cb888967400a03504c88acedd5248d6778a82f46Chris Lattnerunsigned CallExpr::isBuiltinCall() const { 165c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff // All simple function calls (e.g. func()) are implicitly cast to pointer to 166c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff // function. As a result, we try and obtain the DeclRefExpr from the 167c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff // ImplicitCastExpr. 168c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(getCallee()); 169c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff if (!ICE) // FIXME: deal with more complex calls (e.g. (func)(), (*func)()). 170cb888967400a03504c88acedd5248d6778a82f46Chris Lattner return 0; 171cb888967400a03504c88acedd5248d6778a82f46Chris Lattner 172c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(ICE->getSubExpr()); 173c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff if (!DRE) 174cb888967400a03504c88acedd5248d6778a82f46Chris Lattner return 0; 175cb888967400a03504c88acedd5248d6778a82f46Chris Lattner 176bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson const FunctionDecl *FDecl = dyn_cast<FunctionDecl>(DRE->getDecl()); 177bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson if (!FDecl) 178cb888967400a03504c88acedd5248d6778a82f46Chris Lattner return 0; 179cb888967400a03504c88acedd5248d6778a82f46Chris Lattner 1804fcd399a52ae45ed8ebfdd3a25e01cfb76fa366dDouglas Gregor if (!FDecl->getIdentifier()) 1814fcd399a52ae45ed8ebfdd3a25e01cfb76fa366dDouglas Gregor return 0; 1824fcd399a52ae45ed8ebfdd3a25e01cfb76fa366dDouglas Gregor 183cb888967400a03504c88acedd5248d6778a82f46Chris Lattner return FDecl->getIdentifier()->getBuiltinID(); 184cb888967400a03504c88acedd5248d6778a82f46Chris Lattner} 185bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson 186cb888967400a03504c88acedd5248d6778a82f46Chris Lattner 1875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 1885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// corresponds to, e.g. "<<=". 1895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerconst char *BinaryOperator::getOpcodeStr(Opcode Op) { 1905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Op) { 1915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: assert(0 && "Unknown binary operator"); 1925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Mul: return "*"; 1935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Div: return "/"; 1945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Rem: return "%"; 1955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Add: return "+"; 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Sub: return "-"; 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Shl: return "<<"; 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Shr: return ">>"; 1995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LT: return "<"; 2005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case GT: return ">"; 2015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LE: return "<="; 2025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case GE: return ">="; 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case EQ: return "=="; 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case NE: return "!="; 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case And: return "&"; 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Xor: return "^"; 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Or: return "|"; 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LAnd: return "&&"; 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LOr: return "||"; 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Assign: return "="; 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case MulAssign: return "*="; 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DivAssign: return "/="; 2135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case RemAssign: return "%="; 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case AddAssign: return "+="; 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case SubAssign: return "-="; 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ShlAssign: return "<<="; 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ShrAssign: return ">>="; 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case AndAssign: return "&="; 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case XorAssign: return "^="; 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case OrAssign: return "|="; 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Comma: return ","; 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 22566b5a8a39088598c01a9fa6f032dc908612dc8ecAnders CarlssonInitListExpr::InitListExpr(SourceLocation lbraceloc, 226418f6c7d142e5ff4607f70cd8431d008442bafe9Chris Lattner Expr **initExprs, unsigned numInits, 2274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceLocation rbraceloc) 228c5ae899b4bbf65488445316c63168079177db0edSteve Naroff : Expr(InitListExprClass, QualType()), 2290bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor LBraceLoc(lbraceloc), RBraceLoc(rbraceloc), SyntacticForm(0), 230a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor UnionFieldInit(0), HadArrayRangeDesignator(false) { 231418f6c7d142e5ff4607f70cd8431d008442bafe9Chris Lattner 232418f6c7d142e5ff4607f70cd8431d008442bafe9Chris Lattner InitExprs.insert(InitExprs.end(), initExprs, initExprs+numInits); 23366b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson} 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorvoid InitListExpr::resizeInits(ASTContext &Context, unsigned NumInits) { 2364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor for (unsigned Idx = NumInits, LastIdx = InitExprs.size(); Idx < LastIdx; ++Idx) 2374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor delete InitExprs[Idx]; 2384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitExprs.resize(NumInits, 0); 2394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 2404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorExpr *InitListExpr::updateInit(unsigned Init, Expr *expr) { 2424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Init >= InitExprs.size()) { 2434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitExprs.insert(InitExprs.end(), Init - InitExprs.size() + 1, 0); 2444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitExprs.back() = expr; 2454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return 0; 2464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 2474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *Result = cast_or_null<Expr>(InitExprs[Init]); 2494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitExprs[Init] = expr; 2504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 2514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 2524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 253bfdcae678d44906293e21c0cddc6537f3ee8b5a4Steve Naroff/// getFunctionType - Return the underlying function type for this block. 2544eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff/// 2554eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroffconst FunctionType *BlockExpr::getFunctionType() const { 2564eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff return getType()->getAsBlockPointerType()-> 2574eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff getPointeeType()->getAsFunctionType(); 2584eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff} 2594eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 26056ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve NaroffSourceLocation BlockExpr::getCaretLocation() const { 26156ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff return TheBlock->getCaretLocation(); 26256ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff} 26356ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroffconst Stmt *BlockExpr::getBody() const { return TheBlock->getBody(); } 26456ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve NaroffStmt *BlockExpr::getBody() { return TheBlock->getBody(); } 26556ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff 26656ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve Naroff 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Generic Expression Routines 2695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// hasLocalSideEffect - Return true if this immediate expression has side 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// effects, not counting any sub-expressions. 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Expr::hasLocalSideEffect() const { 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (getStmtClass()) { 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ParenExprClass: 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return cast<ParenExpr>(this)->getSubExpr()->hasLocalSideEffect(); 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperatorClass: { 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const UnaryOperator *UO = cast<UnaryOperator>(this); 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (UO->getOpcode()) { 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: return false; 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::PostInc: 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::PostDec: 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::PreInc: 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::PreDec: 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; // ++/-- 2895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Deref: 2915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Dereferencing a volatile pointer is a side-effect. 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return getType().isVolatileQualified(); 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Real: 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Imag: 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // accessing a piece of a volatile complex is a side-effect. 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return UO->getSubExpr()->getType().isVolatileQualified(); 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Extension: 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return UO->getSubExpr()->hasLocalSideEffect(); 3005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 302e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner case BinaryOperatorClass: { 303e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner const BinaryOperator *BinOp = cast<BinaryOperator>(this); 304e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner // Consider comma to have side effects if the LHS and RHS both do. 305e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner if (BinOp->getOpcode() == BinaryOperator::Comma) 306e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner return BinOp->getLHS()->hasLocalSideEffect() && 307e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner BinOp->getRHS()->hasLocalSideEffect(); 308e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner 309e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner return BinOp->isAssignmentOp(); 310e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner } 311eb14fe839ec24c2ca14e5f094be147a34e3d3339Chris Lattner case CompoundAssignOperatorClass: 3121f683e9cf2e855b32d3fb4b142aa121cd3cf1088Chris Lattner return true; 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 314ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian case ConditionalOperatorClass: { 315ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian const ConditionalOperator *Exp = cast<ConditionalOperator>(this); 316ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian return Exp->getCond()->hasLocalSideEffect() 317ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian || (Exp->getLHS() && Exp->getLHS()->hasLocalSideEffect()) 318ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian || (Exp->getRHS() && Exp->getRHS()->hasLocalSideEffect()); 319ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian } 320ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case MemberExprClass: 3225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ArraySubscriptExprClass: 3235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the base pointer or element is to a volatile pointer/field, accessing 3245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // if is a side effect. 3255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return getType().isVolatileQualified(); 326211f6adf1301a1461015fb6cb08a05f0a35b65f3Eli Friedman 3275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CallExprClass: 328b4609806e9232593ece09ce08b630836e825865cDouglas Gregor case CXXOperatorCallExprClass: 3295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: check attributes for pure/const. "void foo() { strlen("bar"); }" 3305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // should warn. 3315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 332a9c01021724b9b546d282b8609cbe559734812ecChris Lattner case ObjCMessageExprClass: 333a9c01021724b9b546d282b8609cbe559734812ecChris Lattner return true; 334611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner case StmtExprClass: { 335611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // Statement exprs don't logically have side effects themselves, but are 336611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // sometimes used in macros in ways that give them a type that is unused. 337611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // For example ({ blah; foo(); }) will end up with a type if foo has a type. 338611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // however, if the result of the stmt expr is dead, we don't want to emit a 339611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // warning. 340611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner const CompoundStmt *CS = cast<StmtExpr>(this)->getSubStmt(); 341611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner if (!CS->body_empty()) 342611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner if (const Expr *E = dyn_cast<Expr>(CS->body_back())) 343611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner return E->hasLocalSideEffect(); 344611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner return false; 345611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner } 3466eec8e883de118b431e3ead5b1e604a6ac68ff6bDouglas Gregor case CStyleCastExprClass: 347987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis case CXXFunctionalCastExprClass: 3485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is a cast to void, check the operand. Otherwise, the result of 3495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the cast is unused. 3505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (getType()->isVoidType()) 3515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return cast<CastExpr>(this)->getSubExpr()->hasLocalSideEffect(); 3525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 35304421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 3544be1f47de20525ad90f02ba8682a7e2cbd3205d1Eli Friedman case ImplicitCastExprClass: 3554be1f47de20525ad90f02ba8682a7e2cbd3205d1Eli Friedman // Check the operand, since implicit casts are inserted by Sema 3564be1f47de20525ad90f02ba8682a7e2cbd3205d1Eli Friedman return cast<ImplicitCastExpr>(this)->getSubExpr()->hasLocalSideEffect(); 3574be1f47de20525ad90f02ba8682a7e2cbd3205d1Eli Friedman 35804421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner case CXXDefaultArgExprClass: 35904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return cast<CXXDefaultArgExpr>(this)->getExpr()->hasLocalSideEffect(); 3604c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl 3614c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl case CXXNewExprClass: 3624c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl // FIXME: In theory, there might be new expressions that don't have side 3634c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl // effects (e.g. a placement new with an uninitialized POD). 3644c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl case CXXDeleteExprClass: 3654c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl return true; 3664c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl } 3675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 369ba7e210a999275695f58be03ef402758cfec3635Douglas Gregor/// DeclCanBeLvalue - Determine whether the given declaration can be 370ba7e210a999275695f58be03ef402758cfec3635Douglas Gregor/// an lvalue. This is a helper routine for isLvalue. 371ba7e210a999275695f58be03ef402758cfec3635Douglas Gregorstatic bool DeclCanBeLvalue(const NamedDecl *Decl, ASTContext &Ctx) { 37272c3f314d92d65c050ee1c07b7753623c044d6c7Douglas Gregor // C++ [temp.param]p6: 37372c3f314d92d65c050ee1c07b7753623c044d6c7Douglas Gregor // A non-type non-reference template-parameter is not an lvalue. 37472c3f314d92d65c050ee1c07b7753623c044d6c7Douglas Gregor if (const NonTypeTemplateParmDecl *NTTParm 37572c3f314d92d65c050ee1c07b7753623c044d6c7Douglas Gregor = dyn_cast<NonTypeTemplateParmDecl>(Decl)) 37672c3f314d92d65c050ee1c07b7753623c044d6c7Douglas Gregor return NTTParm->getType()->isReferenceType(); 37772c3f314d92d65c050ee1c07b7753623c044d6c7Douglas Gregor 37844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor return isa<VarDecl>(Decl) || isa<FieldDecl>(Decl) || 379ba7e210a999275695f58be03ef402758cfec3635Douglas Gregor // C++ 3.10p2: An lvalue refers to an object or function. 380ba7e210a999275695f58be03ef402758cfec3635Douglas Gregor (Ctx.getLangOptions().CPlusPlus && 381ba7e210a999275695f58be03ef402758cfec3635Douglas Gregor (isa<FunctionDecl>(Decl) || isa<OverloadedFunctionDecl>(Decl))); 382ba7e210a999275695f58be03ef402758cfec3635Douglas Gregor} 383ba7e210a999275695f58be03ef402758cfec3635Douglas Gregor 3845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// isLvalue - C99 6.3.2.1: an lvalue is an expression with an object type or an 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// incomplete type other than void. Nonarray expressions that can be lvalues: 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - name, where name must be a variable 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - e[i] 3885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - (e), where e must be an lvalue 3895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - e.name, where e must be an lvalue 3905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - e->name 3915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - *e, the type of e cannot be a function type 3925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - string-constant 3937da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner/// - (__real__ e) and (__imag__ e) where e is an lvalue [GNU extension] 39408ad47cbd1f81fcb31dbc731c13b885a07e12704Bill Wendling/// - reference type [C++ [expr]] 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 39628be73f74c9e241a23ea24fe5756623de6bf1084Chris LattnerExpr::isLvalueResult Expr::isLvalue(ASTContext &Ctx) const { 39798cd599ee8a9b259ed7388ee2921a20d97658864Douglas Gregor // first, check the type (C99 6.3.2.1). Expressions with function 39898cd599ee8a9b259ed7388ee2921a20d97658864Douglas Gregor // type in C are not lvalues, but they can be lvalues in C++. 39998cd599ee8a9b259ed7388ee2921a20d97658864Douglas Gregor if (!Ctx.getLangOptions().CPlusPlus && TR->isFunctionType()) 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return LV_NotObjectType; 4015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 402acb818a4f7d9b608826171094d6b5a555a8fe694Steve Naroff // Allow qualified void which is an incomplete type other than void (yuck). 40328be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner if (TR->isVoidType() && !Ctx.getCanonicalType(TR).getCVRQualifiers()) 404acb818a4f7d9b608826171094d6b5a555a8fe694Steve Naroff return LV_IncompleteVoidType; 405acb818a4f7d9b608826171094d6b5a555a8fe694Steve Naroff 40698cd599ee8a9b259ed7388ee2921a20d97658864Douglas Gregor /// FIXME: Expressions can't have reference type, so the following 40798cd599ee8a9b259ed7388ee2921a20d97658864Douglas Gregor /// isn't needed. 408cb4f9a6d0be445d84af35ba81323be6127816f9eChris Lattner if (TR->isReferenceType()) // C++ [expr] 40908ad47cbd1f81fcb31dbc731c13b885a07e12704Bill Wendling return LV_Valid; 41008ad47cbd1f81fcb31dbc731c13b885a07e12704Bill Wendling 4115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the type looks fine, now check the expression 4125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (getStmtClass()) { 4135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case StringLiteralClass: // C99 6.5.1p4 4147323a6297edad643c202594dcf3d9a174de96ca6Anders Carlsson return LV_Valid; 4155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ArraySubscriptExprClass: // C99 6.5.3p4 (e1[e2] == (*((e1)+(e2)))) 4165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // For vectors, make sure base is an lvalue (i.e. not a function call). 4175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (cast<ArraySubscriptExpr>(this)->getBase()->getType()->isVectorType()) 41828be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner return cast<ArraySubscriptExpr>(this)->getBase()->isLvalue(Ctx); 4195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return LV_Valid; 4201a49af9681c350fef58e677f85ccb9a77e8e9d0aDouglas Gregor case DeclRefExprClass: 4211a49af9681c350fef58e677f85ccb9a77e8e9d0aDouglas Gregor case QualifiedDeclRefExprClass: { // C99 6.5.1p2 422ba7e210a999275695f58be03ef402758cfec3635Douglas Gregor const NamedDecl *RefdDecl = cast<DeclRefExpr>(this)->getDecl(); 423ba7e210a999275695f58be03ef402758cfec3635Douglas Gregor if (DeclCanBeLvalue(RefdDecl, Ctx)) 4245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return LV_Valid; 4255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 4264111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner } 427dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff case BlockDeclRefExprClass: { 428dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff const BlockDeclRefExpr *BDR = cast<BlockDeclRefExpr>(this); 4294f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff if (isa<VarDecl>(BDR->getDecl())) 430dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff return LV_Valid; 431dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff break; 432dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff } 43386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor case MemberExprClass: { 4345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const MemberExpr *m = cast<MemberExpr>(this); 43586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (Ctx.getLangOptions().CPlusPlus) { // C++ [expr.ref]p4: 43686f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor NamedDecl *Member = m->getMemberDecl(); 43786f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // C++ [expr.ref]p4: 43886f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // If E2 is declared to have type "reference to T", then E1.E2 43986f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // is an lvalue. 44086f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (ValueDecl *Value = dyn_cast<ValueDecl>(Member)) 44186f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (Value->getType()->isReferenceType()) 44286f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return LV_Valid; 44386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 44486f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // -- If E2 is a static data member [...] then E1.E2 is an lvalue. 44586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (isa<CXXClassVarDecl>(Member)) 44686f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return LV_Valid; 44786f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 44886f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // -- If E2 is a non-static data member [...]. If E1 is an 44986f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // lvalue, then E1.E2 is an lvalue. 45086f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (isa<FieldDecl>(Member)) 45186f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return m->isArrow() ? LV_Valid : m->getBase()->isLvalue(Ctx); 45286f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 45386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // -- If it refers to a static member function [...], then 45486f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // E1.E2 is an lvalue. 45586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // -- Otherwise, if E1.E2 refers to a non-static member 45686f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // function [...], then E1.E2 is not an lvalue. 45786f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Member)) 45886f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return Method->isStatic()? LV_Valid : LV_MemberFunction; 45986f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 46086f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // -- If E2 is a member enumerator [...], the expression E1.E2 46186f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // is not an lvalue. 46286f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (isa<EnumConstantDecl>(Member)) 46386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return LV_InvalidExpression; 46486f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 46586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // Not an lvalue. 46686f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return LV_InvalidExpression; 46786f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor } 46886f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 46986f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // C99 6.5.2.3p4 47028be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner return m->isArrow() ? LV_Valid : m->getBase()->isLvalue(Ctx); 471fdd75663fffeb2058a7847975e50837e61200593Anton Korobeynikov } 4727da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner case UnaryOperatorClass: 4735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Deref) 4747da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner return LV_Valid; // C99 6.5.3p4 4757da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner 4767da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner if (cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Real || 477baf0d6678418e0dd9309438c3e50274253cfc7b2Chris Lattner cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Imag || 478baf0d6678418e0dd9309438c3e50274253cfc7b2Chris Lattner cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Extension) 47928be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner return cast<UnaryOperator>(this)->getSubExpr()->isLvalue(Ctx); // GNU. 48074253736184c0717a0649922551bf9d8b6815651Douglas Gregor 48174253736184c0717a0649922551bf9d8b6815651Douglas Gregor if (Ctx.getLangOptions().CPlusPlus && // C++ [expr.pre.incr]p1 48274253736184c0717a0649922551bf9d8b6815651Douglas Gregor (cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::PreInc || 48374253736184c0717a0649922551bf9d8b6815651Douglas Gregor cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::PreDec)) 48474253736184c0717a0649922551bf9d8b6815651Douglas Gregor return LV_Valid; 4855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 486eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor case ImplicitCastExprClass: 487eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor return cast<ImplicitCastExpr>(this)->isLvalueCast()? LV_Valid 488eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor : LV_InvalidExpression; 4895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ParenExprClass: // C99 6.5.1p5 49028be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner return cast<ParenExpr>(this)->getSubExpr()->isLvalue(Ctx); 491eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor case BinaryOperatorClass: 492eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor case CompoundAssignOperatorClass: { 493eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor const BinaryOperator *BinOp = cast<BinaryOperator>(this); 494337c6b9f5d502dc1c5acea628bf7bf9e828efc0eDouglas Gregor 495337c6b9f5d502dc1c5acea628bf7bf9e828efc0eDouglas Gregor if (Ctx.getLangOptions().CPlusPlus && // C++ [expr.comma]p1 496337c6b9f5d502dc1c5acea628bf7bf9e828efc0eDouglas Gregor BinOp->getOpcode() == BinaryOperator::Comma) 497337c6b9f5d502dc1c5acea628bf7bf9e828efc0eDouglas Gregor return BinOp->getRHS()->isLvalue(Ctx); 498337c6b9f5d502dc1c5acea628bf7bf9e828efc0eDouglas Gregor 499224605064a4ef87d1c3d35ad1cb363f8b534012bSebastian Redl // C++ [expr.mptr.oper]p6 500224605064a4ef87d1c3d35ad1cb363f8b534012bSebastian Redl if ((BinOp->getOpcode() == BinaryOperator::PtrMemD || 501224605064a4ef87d1c3d35ad1cb363f8b534012bSebastian Redl BinOp->getOpcode() == BinaryOperator::PtrMemI) && 502224605064a4ef87d1c3d35ad1cb363f8b534012bSebastian Redl !BinOp->getType()->isFunctionType()) 503224605064a4ef87d1c3d35ad1cb363f8b534012bSebastian Redl return BinOp->getLHS()->isLvalue(Ctx); 504224605064a4ef87d1c3d35ad1cb363f8b534012bSebastian Redl 505bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor if (!BinOp->isAssignmentOp()) 506eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor return LV_InvalidExpression; 507eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor 508bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor if (Ctx.getLangOptions().CPlusPlus) 509bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor // C++ [expr.ass]p1: 510bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor // The result of an assignment operation [...] is an lvalue. 511bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor return LV_Valid; 512bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor 513bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor 514bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor // C99 6.5.16: 515bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor // An assignment expression [...] is not an lvalue. 516bf3af056289893f58d37b05a2c80970708781d61Douglas Gregor return LV_InvalidExpression; 517eb8f3063257a392f15aea48d42fb73ec51afc548Douglas Gregor } 51859b5da6d853b4368b984700315adf7b37de05764Nate Begeman // FIXME: OverloadExprClass 519b4609806e9232593ece09ce08b630836e825865cDouglas Gregor case CallExprClass: 52088a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor case CXXOperatorCallExprClass: 52188a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor case CXXMemberCallExprClass: { 5229d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // C++ [expr.call]p10: 5239d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // A function call is an lvalue if and only if the result type 5249d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // is a reference. 52527c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregor QualType CalleeType = cast<CallExpr>(this)->getCallee()->getType(); 5269d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor if (const PointerType *FnTypePtr = CalleeType->getAsPointerType()) 52788a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor CalleeType = FnTypePtr->getPointeeType(); 52888a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor if (const FunctionType *FnType = CalleeType->getAsFunctionType()) 52988a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor if (FnType->getResultType()->isReferenceType()) 53088a3514f36de96b19cdf50141c640df1a5f13f6cDouglas Gregor return LV_Valid; 5319d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor 5329d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor break; 5339d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor } 534e6386394677ed4f77b20e2e3d5446a3a2f628e53Steve Naroff case CompoundLiteralExprClass: // C99 6.5.2.5p5 535e6386394677ed4f77b20e2e3d5446a3a2f628e53Steve Naroff return LV_Valid; 536670a62cd1d51042ea076cda5e93f26a1d8327fb3Chris Lattner case ChooseExprClass: 537670a62cd1d51042ea076cda5e93f26a1d8327fb3Chris Lattner // __builtin_choose_expr is an lvalue if the selected operand is. 538670a62cd1d51042ea076cda5e93f26a1d8327fb3Chris Lattner if (cast<ChooseExpr>(this)->isConditionTrue(Ctx)) 539670a62cd1d51042ea076cda5e93f26a1d8327fb3Chris Lattner return cast<ChooseExpr>(this)->getLHS()->isLvalue(Ctx); 540670a62cd1d51042ea076cda5e93f26a1d8327fb3Chris Lattner else 541670a62cd1d51042ea076cda5e93f26a1d8327fb3Chris Lattner return cast<ChooseExpr>(this)->getRHS()->isLvalue(Ctx); 542670a62cd1d51042ea076cda5e93f26a1d8327fb3Chris Lattner 543213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman case ExtVectorElementExprClass: 544213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman if (cast<ExtVectorElementExpr>(this)->containsDuplicateElements()) 545fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff return LV_DuplicateVectorComponents; 546fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff return LV_Valid; 547027282d1c1ac151aa7b1b3b45babc918b8ad456aSteve Naroff case ObjCIvarRefExprClass: // ObjC instance variables are lvalues. 548027282d1c1ac151aa7b1b3b45babc918b8ad456aSteve Naroff return LV_Valid; 549799a6a6850af625946bb8d88ca960bb6604e3858Steve Naroff case ObjCPropertyRefExprClass: // FIXME: check if read-only property. 550799a6a6850af625946bb8d88ca960bb6604e3858Steve Naroff return LV_Valid; 5515daf570d0ce027e18ed5f9d66e6b2a14a40b720dFariborz Jahanian case ObjCKVCRefExprClass: // FIXME: check if read-only property. 552670a62cd1d51042ea076cda5e93f26a1d8327fb3Chris Lattner return LV_Valid; 553d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner case PredefinedExprClass: 554796da18402f286b897782a298ae3b20c459c102eDouglas Gregor return LV_Valid; 5559d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor case VAArgExprClass: 5569d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor return LV_Valid; 55704421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner case CXXDefaultArgExprClass: 55828be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner return cast<CXXDefaultArgExpr>(this)->getExpr()->isLvalue(Ctx); 55924b41fa8239c63b9eb570d3e83c4a82840656a65Argyrios Kyrtzidis case CXXConditionDeclExprClass: 56024b41fa8239c63b9eb570d3e83c4a82840656a65Argyrios Kyrtzidis return LV_Valid; 5616eec8e883de118b431e3ead5b1e604a6ac68ff6bDouglas Gregor case CStyleCastExprClass: 5629d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor case CXXFunctionalCastExprClass: 5639d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor case CXXStaticCastExprClass: 5649d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor case CXXDynamicCastExprClass: 5659d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor case CXXReinterpretCastExprClass: 5669d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor case CXXConstCastExprClass: 5679d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // The result of an explicit cast is an lvalue if the type we are 5689d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // casting to is a reference type. See C++ [expr.cast]p1, 5699d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // C++ [expr.static.cast]p2, C++ [expr.dynamic.cast]p2, 5709d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor // C++ [expr.reinterpret.cast]p1, C++ [expr.const.cast]p1. 5719d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor if (cast<ExplicitCastExpr>(this)->getTypeAsWritten()->isReferenceType()) 5729d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor return LV_Valid; 5739d293dfc0ad7c44ae0b5eb9517f1ed8c8d8b7ff7Douglas Gregor break; 574c42e1183846228a7fa5143ad76507d6d60f5c6f3Sebastian Redl case CXXTypeidExprClass: 575c42e1183846228a7fa5143ad76507d6d60f5c6f3Sebastian Redl // C++ 5.2.8p1: The result of a typeid expression is an lvalue of ... 576c42e1183846228a7fa5143ad76507d6d60f5c6f3Sebastian Redl return LV_Valid; 5775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 5785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 5795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return LV_InvalidExpression; 5815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 5825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// isModifiableLvalue - C99 6.3.2.1: an lvalue that does not have array type, 5845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// does not have an incomplete type, does not have a const-qualified type, and 5855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// if it is a structure or union, does not have any member (including, 5865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// recursively, any member or element of all contained aggregates or unions) 5875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// with a const-qualified type. 58828be73f74c9e241a23ea24fe5756623de6bf1084Chris LattnerExpr::isModifiableLvalueResult Expr::isModifiableLvalue(ASTContext &Ctx) const { 58928be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner isLvalueResult lvalResult = isLvalue(Ctx); 5905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (lvalResult) { 592ae8d467e75a4e72b19e1eca199bf93dfaab47acfDouglas Gregor case LV_Valid: 593ae8d467e75a4e72b19e1eca199bf93dfaab47acfDouglas Gregor // C++ 3.10p11: Functions cannot be modified, but pointers to 594ae8d467e75a4e72b19e1eca199bf93dfaab47acfDouglas Gregor // functions can be modifiable. 595ae8d467e75a4e72b19e1eca199bf93dfaab47acfDouglas Gregor if (Ctx.getLangOptions().CPlusPlus && TR->isFunctionType()) 596ae8d467e75a4e72b19e1eca199bf93dfaab47acfDouglas Gregor return MLV_NotObjectType; 597ae8d467e75a4e72b19e1eca199bf93dfaab47acfDouglas Gregor break; 598ae8d467e75a4e72b19e1eca199bf93dfaab47acfDouglas Gregor 5995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LV_NotObjectType: return MLV_NotObjectType; 6005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LV_IncompleteVoidType: return MLV_IncompleteVoidType; 601fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff case LV_DuplicateVectorComponents: return MLV_DuplicateVectorComponents; 602ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner case LV_InvalidExpression: 603ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner // If the top level is a C-style cast, and the subexpression is a valid 604ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner // lvalue, then this is probably a use of the old-school "cast as lvalue" 605ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner // GCC extension. We don't support it, but we want to produce good 606ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner // diagnostics when it happens so that the user knows why. 607ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner if (const CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(this)) 608ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner if (CE->getSubExpr()->isLvalue(Ctx) == LV_Valid) 609ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner return MLV_LValueCast; 610ca354faa7e9b99af17070c82b9662a5fca76422cChris Lattner return MLV_InvalidExpression; 61186f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor case LV_MemberFunction: return MLV_MemberFunction; 6125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 613c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner 614c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner QualType CT = Ctx.getCanonicalType(getType()); 615c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner 616c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (CT.isConstQualified()) 6175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_ConstQualified; 618c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (CT->isArrayType()) 6195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_ArrayType; 620c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (CT->isIncompleteType()) 6215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_IncompleteType; 6225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 623c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const RecordType *r = CT->getAsRecordType()) { 6245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (r->hasConstFields()) 6255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_ConstQualified; 6265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6274f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff // The following is illegal: 6284f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff // void takeclosure(void (^C)(void)); 6294f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff // void func() { int x = 1; takeclosure(^{ x = 7 }); } 6304f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff // 6314f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff if (getStmtClass() == BlockDeclRefExprClass) { 6324f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff const BlockDeclRefExpr *BDR = cast<BlockDeclRefExpr>(this); 6334f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff if (!BDR->isByRef() && isa<VarDecl>(BDR->getDecl())) 6344f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff return MLV_NotBlockQualified; 6354f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff } 636d1fa6449e9dbdd667466e9e1e971aa17c9793e8aFariborz Jahanian 637ba8d2d684e74a20bef03828c21c991d222c7e9e5Fariborz Jahanian // Assigning to an 'implicit' property? 6386669db9d80d77d10f101aa9f8e488bbd2d98f76cFariborz Jahanian else if (getStmtClass() == ObjCKVCRefExprClass) { 639ba8d2d684e74a20bef03828c21c991d222c7e9e5Fariborz Jahanian const ObjCKVCRefExpr* KVCExpr = cast<ObjCKVCRefExpr>(this); 640ba8d2d684e74a20bef03828c21c991d222c7e9e5Fariborz Jahanian if (KVCExpr->getSetterMethod() == 0) 641ba8d2d684e74a20bef03828c21c991d222c7e9e5Fariborz Jahanian return MLV_NoSetterProperty; 642ba8d2d684e74a20bef03828c21c991d222c7e9e5Fariborz Jahanian } 6435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_Valid; 6445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6462e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek/// hasGlobalStorage - Return true if this expression has static storage 6474cc627111453b75519d5130b57e06256da7b00e8Chris Lattner/// duration. This means that the address of this expression is a link-time 6484cc627111453b75519d5130b57e06256da7b00e8Chris Lattner/// constant. 6492e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenekbool Expr::hasGlobalStorage() const { 6501d09ecca892185ba067e47ba879f424de59950efChris Lattner switch (getStmtClass()) { 6511d09ecca892185ba067e47ba879f424de59950efChris Lattner default: 6521d09ecca892185ba067e47ba879f424de59950efChris Lattner return false; 6534cc627111453b75519d5130b57e06256da7b00e8Chris Lattner case ParenExprClass: 6542e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return cast<ParenExpr>(this)->getSubExpr()->hasGlobalStorage(); 6554cc627111453b75519d5130b57e06256da7b00e8Chris Lattner case ImplicitCastExprClass: 6562e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return cast<ImplicitCastExpr>(this)->getSubExpr()->hasGlobalStorage(); 657e9b12198c4cc7f5687960100351b4af006c14469Steve Naroff case CompoundLiteralExprClass: 658e9b12198c4cc7f5687960100351b4af006c14469Steve Naroff return cast<CompoundLiteralExpr>(this)->isFileScope(); 6591a49af9681c350fef58e677f85ccb9a77e8e9d0aDouglas Gregor case DeclRefExprClass: 6601a49af9681c350fef58e677f85ccb9a77e8e9d0aDouglas Gregor case QualifiedDeclRefExprClass: { 6611d09ecca892185ba067e47ba879f424de59950efChris Lattner const Decl *D = cast<DeclRefExpr>(this)->getDecl(); 6621d09ecca892185ba067e47ba879f424de59950efChris Lattner if (const VarDecl *VD = dyn_cast<VarDecl>(D)) 6632e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return VD->hasGlobalStorage(); 66463f067f5a75ae97b53dc7a6a6530e2c72c8bb7f8Seo Sanghyeon if (isa<FunctionDecl>(D)) 66563f067f5a75ae97b53dc7a6a6530e2c72c8bb7f8Seo Sanghyeon return true; 6661d09ecca892185ba067e47ba879f424de59950efChris Lattner return false; 6671d09ecca892185ba067e47ba879f424de59950efChris Lattner } 668fb7080663a0f0abd687a6f58ac917d9a76318b73Chris Lattner case MemberExprClass: { 6691d09ecca892185ba067e47ba879f424de59950efChris Lattner const MemberExpr *M = cast<MemberExpr>(this); 6702e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return !M->isArrow() && M->getBase()->hasGlobalStorage(); 671fb7080663a0f0abd687a6f58ac917d9a76318b73Chris Lattner } 6724cc627111453b75519d5130b57e06256da7b00e8Chris Lattner case ArraySubscriptExprClass: 6732e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return cast<ArraySubscriptExpr>(this)->getBase()->hasGlobalStorage(); 674d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner case PredefinedExprClass: 675fa28b30d5a1e93e5263be33e343532b900d2c643Chris Lattner return true; 67604421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner case CXXDefaultArgExprClass: 67704421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return cast<CXXDefaultArgExpr>(this)->getExpr()->hasGlobalStorage(); 6781d09ecca892185ba067e47ba879f424de59950efChris Lattner } 6791d09ecca892185ba067e47ba879f424de59950efChris Lattner} 6801d09ecca892185ba067e47ba879f424de59950efChris Lattner 6814e99a5fc3b203397a91136c6e695e405fb8fc606Ted KremenekExpr* Expr::IgnoreParens() { 6824e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek Expr* E = this; 6834e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek while (ParenExpr* P = dyn_cast<ParenExpr>(E)) 6844e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek E = P->getSubExpr(); 6854e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek 6864e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek return E; 6874e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek} 6884e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek 68956f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner/// IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr 69056f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner/// or CastExprs or ImplicitCastExprs, returning their operand. 69156f349400c5932a196509c0480ff6f99a9a0b48fChris LattnerExpr *Expr::IgnoreParenCasts() { 69256f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner Expr *E = this; 69356f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner while (true) { 69456f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner if (ParenExpr *P = dyn_cast<ParenExpr>(E)) 69556f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner E = P->getSubExpr(); 69656f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner else if (CastExpr *P = dyn_cast<CastExpr>(E)) 69756f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner E = P->getSubExpr(); 69856f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner else 69956f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner return E; 70056f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner } 70156f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner} 70256f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner 703898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor/// hasAnyTypeDependentArguments - Determines if any of the expressions 704898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor/// in Exprs is type-dependent. 705898574e7496ba8fd76290079d3a9d06954992734Douglas Gregorbool Expr::hasAnyTypeDependentArguments(Expr** Exprs, unsigned NumExprs) { 706898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor for (unsigned I = 0; I < NumExprs; ++I) 707898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor if (Exprs[I]->isTypeDependent()) 708898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor return true; 709898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 710898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor return false; 711898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor} 712898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 713898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor/// hasAnyValueDependentArguments - Determines if any of the expressions 714898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor/// in Exprs is value-dependent. 715898574e7496ba8fd76290079d3a9d06954992734Douglas Gregorbool Expr::hasAnyValueDependentArguments(Expr** Exprs, unsigned NumExprs) { 716898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor for (unsigned I = 0; I < NumExprs; ++I) 717898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor if (Exprs[I]->isValueDependent()) 718898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor return true; 719898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 720898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor return false; 721898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor} 722898574e7496ba8fd76290079d3a9d06954992734Douglas Gregor 723c9e8f606787b0bc0c3b08e566b87cc1751694168Eli Friedmanbool Expr::isConstantInitializer(ASTContext &Ctx) const { 724c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman // This function is attempting whether an expression is an initializer 725c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman // which can be evaluated at compile-time. isEvaluatable handles most 726c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman // of the cases, but it can't deal with some initializer-specific 727c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman // expressions, and it can't deal with aggregates; we deal with those here, 728c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman // and fall back to isEvaluatable for the other cases. 729c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman 730e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson switch (getStmtClass()) { 731c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman default: break; 732e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson case StringLiteralClass: 733e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson return true; 73459b5da6d853b4368b984700315adf7b37de05764Nate Begeman case CompoundLiteralExprClass: { 73559b5da6d853b4368b984700315adf7b37de05764Nate Begeman const Expr *Exp = cast<CompoundLiteralExpr>(this)->getInitializer(); 736c9e8f606787b0bc0c3b08e566b87cc1751694168Eli Friedman return Exp->isConstantInitializer(Ctx); 73759b5da6d853b4368b984700315adf7b37de05764Nate Begeman } 738e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson case InitListExprClass: { 739e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson const InitListExpr *Exp = cast<InitListExpr>(this); 740e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson unsigned numInits = Exp->getNumInits(); 741e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson for (unsigned i = 0; i < numInits; i++) { 742c9e8f606787b0bc0c3b08e566b87cc1751694168Eli Friedman if (!Exp->getInit(i)->isConstantInitializer(Ctx)) 743e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson return false; 744e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson } 745c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman return true; 746e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson } 7473498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor case ImplicitValueInitExprClass: 7483498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return true; 749c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman case ParenExprClass: { 750c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman return cast<ParenExpr>(this)->getSubExpr()->isConstantInitializer(Ctx); 751c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman } 752c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman case UnaryOperatorClass: { 753c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman const UnaryOperator* Exp = cast<UnaryOperator>(this); 754c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman if (Exp->getOpcode() == UnaryOperator::Extension) 755c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman return Exp->getSubExpr()->isConstantInitializer(Ctx); 756c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman break; 757c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman } 758c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman case CStyleCastExprClass: 759c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman // Handle casts with a destination that's a struct or union; this 760c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman // deals with both the gcc no-op struct cast extension and the 761c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman // cast-to-union extension. 762c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman if (getType()->isRecordType()) 763c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman return cast<CastExpr>(this)->getSubExpr()->isConstantInitializer(Ctx); 764c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman break; 76532a311e276cd4bcafddd38db679aff9804e66bd4Eli Friedman case DesignatedInitExprClass: 7664e716e07d90a18ac83dd94d157ec676530bc78f9Sebastian Redl return cast<DesignatedInitExpr>(this)-> 7674e716e07d90a18ac83dd94d157ec676530bc78f9Sebastian Redl getInit()->isConstantInitializer(Ctx); 768e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson } 769e8a32b855ce4e8580a191f8d29d2f3f459834302Anders Carlsson 770c39dc9a25a9d74a5302e8567a4d3fc008212024cEli Friedman return isEvaluatable(Ctx); 77138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff} 77238374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff 7735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// isIntegerConstantExpr - this recursive routine will test if an expression is 7745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// an integer constant expression. Note: With the introduction of VLA's in 7755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// C99 the result of the sizeof operator is no longer always a constant 7765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// expression. The generalization of the wording to include any subexpression 7775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that is not evaluated (C99 6.6p3) means that nonconstant subexpressions 7785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// can appear as operands to other operators (e.g. &&, ||, ?:). For instance, 7795f6b632391e24b08ead3e62ba2e2765e770382edNuno Lopes/// "0 || f()" can be treated as a constant expression. In C90 this expression, 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// occurring in a context requiring a constant, would have been a constraint 7815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// violation. FIXME: This routine currently implements C90 semantics. 7825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// To properly implement C99 semantics this routine will need to evaluate 7835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// expressions involving operators previously mentioned. 7845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// FIXME: Pass up a reason why! Invalid operation in i-c-e, division by zero, 7865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// comma, etc 7875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 7885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// FIXME: This should ext-warn on overflow during evaluation! ISO C does not 789ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner/// permit this. This includes things like (int)1e1000 790ce0afc0b09accbf7370b2ba87574b2c4be7fb032Chris Lattner/// 791ce0afc0b09accbf7370b2ba87574b2c4be7fb032Chris Lattner/// FIXME: Handle offsetof. Two things to do: Handle GCC's __builtin_offsetof 792ce0afc0b09accbf7370b2ba87574b2c4be7fb032Chris Lattner/// to support gcc 4.0+ and handle the idiom GCC recognizes with a null pointer 793ce0afc0b09accbf7370b2ba87574b2c4be7fb032Chris Lattner/// cast+dereference. 794590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattnerbool Expr::isIntegerConstantExpr(llvm::APSInt &Result, ASTContext &Ctx, 795590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner SourceLocation *Loc, bool isEvaluated) const { 796a6afa768aa7bd3102a2807aa720917e4a1771e4eEli Friedman // Pretest for integral type; some parts of the code crash for types that 797a6afa768aa7bd3102a2807aa720917e4a1771e4eEli Friedman // can't be sized. 798a6afa768aa7bd3102a2807aa720917e4a1771e4eEli Friedman if (!getType()->isIntegralType()) { 799a6afa768aa7bd3102a2807aa720917e4a1771e4eEli Friedman if (Loc) *Loc = getLocStart(); 800a6afa768aa7bd3102a2807aa720917e4a1771e4eEli Friedman return false; 801a6afa768aa7bd3102a2807aa720917e4a1771e4eEli Friedman } 8025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (getStmtClass()) { 8035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 8045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 8055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 8065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ParenExprClass: 8075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return cast<ParenExpr>(this)->getSubExpr()-> 808590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated); 8095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case IntegerLiteralClass: 8105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = cast<IntegerLiteral>(this)->getValue(); 8115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8122eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner case CharacterLiteralClass: { 8132eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner const CharacterLiteral *CL = cast<CharacterLiteral>(this); 81498be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 8152eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner Result = CL->getValue(); 816f0fbcb356bc4eb5f6467dc4fc4bc447e9a630102Chris Lattner Result.setIsUnsigned(!getType()->isSignedIntegerType()); 8175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8182eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner } 819b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson case CXXBoolLiteralExprClass: { 820b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson const CXXBoolLiteralExpr *BL = cast<CXXBoolLiteralExpr>(this); 821b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 822b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson Result = BL->getValue(); 823b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson Result.setIsUnsigned(!getType()->isSignedIntegerType()); 824b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson break; 825b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson } 8267267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis case CXXZeroInitValueExprClass: 8277267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis Result.clear(); 8287267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis break; 8297b658aa315784fa489a32daeacfe400512ce468dSteve Naroff case TypesCompatibleExprClass: { 8307b658aa315784fa489a32daeacfe400512ce468dSteve Naroff const TypesCompatibleExpr *TCE = cast<TypesCompatibleExpr>(this); 83198be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 832ac620decb68aad1a2cf6c0c191b56d78981d9aaaDaniel Dunbar // Per gcc docs "this built-in function ignores top level 833ac620decb68aad1a2cf6c0c191b56d78981d9aaaDaniel Dunbar // qualifiers". We need to use the canonical version to properly 834ac620decb68aad1a2cf6c0c191b56d78981d9aaaDaniel Dunbar // be able to strip CRV qualifiers from the type. 835ac620decb68aad1a2cf6c0c191b56d78981d9aaaDaniel Dunbar QualType T0 = Ctx.getCanonicalType(TCE->getArgType1()); 836ac620decb68aad1a2cf6c0c191b56d78981d9aaaDaniel Dunbar QualType T1 = Ctx.getCanonicalType(TCE->getArgType2()); 837ac620decb68aad1a2cf6c0c191b56d78981d9aaaDaniel Dunbar Result = Ctx.typesAreCompatible(T0.getUnqualifiedType(), 838ac620decb68aad1a2cf6c0c191b56d78981d9aaaDaniel Dunbar T1.getUnqualifiedType()); 839389cecc83f33e93c8ba6bf2e8269b8690404416fSteve Naroff break; 8407b658aa315784fa489a32daeacfe400512ce468dSteve Naroff } 841b4609806e9232593ece09ce08b630836e825865cDouglas Gregor case CallExprClass: 842b4609806e9232593ece09ce08b630836e825865cDouglas Gregor case CXXOperatorCallExprClass: { 84313b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff const CallExpr *CE = cast<CallExpr>(this); 84498be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 845a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner 846a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner // If this is a call to a builtin function, constant fold it otherwise 847a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner // reject it. 848a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner if (CE->isBuiltinCall()) { 8491c0cfd4599e816cfd7a8f348286bf0ad79652ffcAnders Carlsson EvalResult EvalResult; 8501c0cfd4599e816cfd7a8f348286bf0ad79652ffcAnders Carlsson if (CE->Evaluate(EvalResult, Ctx)) { 8511c0cfd4599e816cfd7a8f348286bf0ad79652ffcAnders Carlsson assert(!EvalResult.HasSideEffects && 8521c0cfd4599e816cfd7a8f348286bf0ad79652ffcAnders Carlsson "Foldable builtin call should not have side effects!"); 8531c0cfd4599e816cfd7a8f348286bf0ad79652ffcAnders Carlsson Result = EvalResult.Val.getInt(); 854a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner break; // It is a constant, expand it. 855a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner } 856a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner } 857a4d55d89c8076b402bb168e3edeef0c2cd2a78c3Chris Lattner 85813b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff if (Loc) *Loc = getLocStart(); 85913b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff return false; 86013b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff } 8615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclRefExprClass: 8621a49af9681c350fef58e677f85ccb9a77e8e9d0aDouglas Gregor case QualifiedDeclRefExprClass: 8635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (const EnumConstantDecl *D = 8645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer dyn_cast<EnumConstantDecl>(cast<DeclRefExpr>(this)->getDecl())) { 8655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = D->getInitVal(); 8665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 8695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 8705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperatorClass: { 8715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const UnaryOperator *Exp = cast<UnaryOperator>(this); 8725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8730518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // Get the operand value. If this is offsetof, do not evalute the 8745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // operand. This affects C99 6.6p3. 8750518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl if (!Exp->isOffsetOfOp() && !Exp->getSubExpr()-> 8760518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated)) 8775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 8785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Exp->getOpcode()) { 8805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Address, indirect, pre/post inc/dec, etc are not valid constant exprs. 8815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // See C99 6.6p3. 8825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 8835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = Exp->getOperatorLoc(); 8845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 8855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Extension: 88676e773a443be9f006610f46529e07d4c8d857680Chris Lattner return true; // FIXME: this is wrong. 8875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::LNot: { 888bf7553889594886213e05cd3f94a6d6f7747bf7bChris Lattner bool Val = Result == 0; 88998be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 8905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = Val; 8915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Plus: 8945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Minus: 8965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = -Result; 8975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Not: 8995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = ~Result; 9005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9015a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson case UnaryOperator::OffsetOf: 902aa1f9f1d50adf294674b74510b62e863b68572bcDaniel Dunbar Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 9035a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson Result = Exp->evaluateOffsetOf(Ctx); 9045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9070518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl case SizeOfAlignOfExprClass: { 9080518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl const SizeOfAlignOfExpr *Exp = cast<SizeOfAlignOfExpr>(this); 909a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 910a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner // Return the result in the right width. 91198be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 912a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 9130518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl QualType ArgTy = Exp->getTypeOfArgument(); 914a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner // sizeof(void) and __alignof__(void) = 1 as a gcc extension. 9150518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl if (ArgTy->isVoidType()) { 916a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner Result = 1; 917a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner break; 918a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner } 919a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 920a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner // alignof always evaluates to a constant, sizeof does if arg is not VLA. 9210518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl if (Exp->isSizeOf() && !ArgTy->isConstantSizeType()) { 92265383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner if (Loc) *Loc = Exp->getOperatorLoc(); 9235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 92465383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner } 9255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 92676e773a443be9f006610f46529e07d4c8d857680Chris Lattner // Get information about the size or align. 9270518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl if (ArgTy->isFunctionType()) { 928efdd1574e3cca00ef0410aee8b7ee36eda5a2f71Chris Lattner // GCC extension: sizeof(function) = 1. 929efdd1574e3cca00ef0410aee8b7ee36eda5a2f71Chris Lattner Result = Exp->isSizeOf() ? 1 : 4; 9306a24acbb3dbb3bea9426716bee6ad6023ad15f3fAnders Carlsson } else { 93198be4943e8dc4f3905629a7102668960873cf863Chris Lattner unsigned CharSize = Ctx.Target.getCharWidth(); 9326a24acbb3dbb3bea9426716bee6ad6023ad15f3fAnders Carlsson if (Exp->isSizeOf()) 9330518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl Result = Ctx.getTypeSize(ArgTy) / CharSize; 9346a24acbb3dbb3bea9426716bee6ad6023ad15f3fAnders Carlsson else 9350518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl Result = Ctx.getTypeAlign(ArgTy) / CharSize; 936060e470e53b73167114284eb0b8c3e25bb3dad99Ted Kremenek } 9375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperatorClass: { 9405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const BinaryOperator *Exp = cast<BinaryOperator>(this); 941e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar llvm::APSInt LHS, RHS; 942e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar 943e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar // Initialize result to have correct signedness and width. 944e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = llvm::APSInt(static_cast<uint32_t>(Ctx.getTypeSize(getType())), 945b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman !getType()->isSignedIntegerType()); 946b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman 9475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The LHS of a constant expr is always evaluated and needed. 948e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar if (!Exp->getLHS()->isIntegerConstantExpr(LHS, Ctx, Loc, isEvaluated)) 9495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The short-circuiting &&/|| operators don't necessarily evaluate their 9525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // RHS. Make sure to pass isEvaluated down correctly. 9535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Exp->isLogicalOp()) { 9545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool RHSEval; 9555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Exp->getOpcode() == BinaryOperator::LAnd) 956e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar RHSEval = LHS != 0; 9575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else { 9585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Exp->getOpcode() == BinaryOperator::LOr &&"Unexpected logical"); 959e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar RHSEval = LHS == 0; 9605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 962590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner if (!Exp->getRHS()->isIntegerConstantExpr(RHS, Ctx, Loc, 9635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer isEvaluated & RHSEval)) 9645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 966590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner if (!Exp->getRHS()->isIntegerConstantExpr(RHS, Ctx, Loc, isEvaluated)) 9675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Exp->getOpcode()) { 9715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 9725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 9735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Mul: 975e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS * RHS; 9765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Div: 9785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (RHS == 0) { 9795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!isEvaluated) break; 9805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 9815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 983e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS / RHS; 9845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Rem: 9865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (RHS == 0) { 9875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!isEvaluated) break; 9885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 9895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 991e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS % RHS; 9925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 993e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::Add: Result = LHS + RHS; break; 994e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::Sub: Result = LHS - RHS; break; 9955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Shl: 996e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS << 997e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar static_cast<uint32_t>(RHS.getLimitedValue(LHS.getBitWidth()-1)); 998e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar break; 9995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Shr: 1000e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS >> 1001e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar static_cast<uint32_t>(RHS.getLimitedValue(LHS.getBitWidth()-1)); 10025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 1003e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::LT: Result = LHS < RHS; break; 1004e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::GT: Result = LHS > RHS; break; 1005e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::LE: Result = LHS <= RHS; break; 1006e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::GE: Result = LHS >= RHS; break; 1007e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::EQ: Result = LHS == RHS; break; 1008e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::NE: Result = LHS != RHS; break; 1009e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::And: Result = LHS & RHS; break; 1010e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::Xor: Result = LHS ^ RHS; break; 1011e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::Or: Result = LHS | RHS; break; 10125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::LAnd: 1013e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS != 0 && RHS != 0; 10145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 10155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::LOr: 1016e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS != 0 || RHS != 0; 10175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 1018b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman 1019b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman case BinaryOperator::Comma: 1020b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman // C99 6.6p3: "shall not contain assignment, ..., or comma operators, 1021b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman // *except* when they are contained within a subexpression that is not 1022b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman // evaluated". Note that Assignment can never happen due to constraints 1023b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman // on the LHS subexpr, so we don't need to check it here. 1024b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman if (isEvaluated) { 1025b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman if (Loc) *Loc = getLocStart(); 1026b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman return false; 1027b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman } 1028b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman 1029b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman // The result of the constant expr is the RHS. 1030b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman Result = RHS; 1031b11e77836dd0867955c5abf32baf1c3e6c7f81e1Eli Friedman return true; 10325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(!Exp->isAssignmentOp() && "LHS can't be a constant expr!"); 10355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 10365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 103726dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner case ImplicitCastExprClass: 10386eec8e883de118b431e3ead5b1e604a6ac68ff6bDouglas Gregor case CStyleCastExprClass: 1039987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis case CXXFunctionalCastExprClass: { 10400835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis const Expr *SubExpr = cast<CastExpr>(this)->getSubExpr(); 10410835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis SourceLocation CastLoc = getLocStart(); 104226dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner 10435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.6p6: shall only convert arithmetic types to integer types. 104426dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner if (!SubExpr->getType()->isArithmeticType() || 104526dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner !getType()->isIntegerType()) { 104626dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner if (Loc) *Loc = SubExpr->getLocStart(); 10475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 10485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1049987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner 105098be4943e8dc4f3905629a7102668960873cf863Chris Lattner uint32_t DestWidth = static_cast<uint32_t>(Ctx.getTypeSize(getType())); 1051987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner 10525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Handle simple integer->integer casts. 105326dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner if (SubExpr->getType()->isIntegerType()) { 105426dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner if (!SubExpr->isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated)) 10555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 105626dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner 105726dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner // Figure out if this is a truncate, extend or noop cast. 105826dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner // If the input is signed, do a sign extend, noop, or truncate. 1059c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner if (getType()->isBooleanType()) { 1060c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner // Conversion to bool compares against zero. 1061c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner Result = Result != 0; 1062c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner Result.zextOrTrunc(DestWidth); 1063c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner } else if (SubExpr->getType()->isSignedIntegerType()) 106426dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner Result.sextOrTrunc(DestWidth); 106526dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner else // If the input is unsigned, do a zero extend, noop, or truncate. 106626dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner Result.zextOrTrunc(DestWidth); 10675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 10685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Allow floating constants that are the immediate operands of casts or that 10715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // are parenthesized. 107226dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner const Expr *Operand = SubExpr; 10735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (const ParenExpr *PE = dyn_cast<ParenExpr>(Operand)) 10745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Operand = PE->getSubExpr(); 1075987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner 1076987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner // If this isn't a floating literal, we can't handle it. 1077987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner const FloatingLiteral *FL = dyn_cast<FloatingLiteral>(Operand); 1078987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner if (!FL) { 1079987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner if (Loc) *Loc = Operand->getLocStart(); 1080987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner return false; 1081987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner } 1082c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner 1083c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner // If the destination is boolean, compare against zero. 1084c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner if (getType()->isBooleanType()) { 1085c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner Result = !FL->getValue().isZero(); 1086c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner Result.zextOrTrunc(DestWidth); 1087c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner break; 1088c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner } 10895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1090987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner // Determine whether we are converting to unsigned or signed. 1091987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner bool DestSigned = getType()->isSignedIntegerType(); 1092ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner 1093ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner // TODO: Warn on overflow, but probably not here: isIntegerConstantExpr can 1094ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner // be called multiple times per AST. 1095ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen uint64_t Space[4]; 1096ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen bool ignored; 1097ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner (void)FL->getValue().convertToInteger(Space, DestWidth, DestSigned, 1098ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen llvm::APFloat::rmTowardZero, 1099ee5a700af3fe9ae1a639c271f093f40677dddc04Dale Johannesen &ignored); 1100987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner Result = llvm::APInt(DestWidth, 4, Space); 1101987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner break; 11025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 11035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ConditionalOperatorClass: { 11045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const ConditionalOperator *Exp = cast<ConditionalOperator>(this); 11055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 110628daa53db73341b7ee7f269924ccfca1c6d179acChris Lattner const Expr *Cond = Exp->getCond(); 110728daa53db73341b7ee7f269924ccfca1c6d179acChris Lattner 110828daa53db73341b7ee7f269924ccfca1c6d179acChris Lattner if (!Cond->isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated)) 11095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 11105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const Expr *TrueExp = Exp->getLHS(); 11125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const Expr *FalseExp = Exp->getRHS(); 11135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Result == 0) std::swap(TrueExp, FalseExp); 11145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 111528daa53db73341b7ee7f269924ccfca1c6d179acChris Lattner // If the condition (ignoring parens) is a __builtin_constant_p call, 111628daa53db73341b7ee7f269924ccfca1c6d179acChris Lattner // then only the true side is actually considered in an integer constant 111742b83dde7c700b34f9435ad746984169888ae705Chris Lattner // expression, and it is fully evaluated. This is an important GNU 111842b83dde7c700b34f9435ad746984169888ae705Chris Lattner // extension. See GCC PR38377 for discussion. 111928daa53db73341b7ee7f269924ccfca1c6d179acChris Lattner if (const CallExpr *CallCE = dyn_cast<CallExpr>(Cond->IgnoreParenCasts())) 112042b83dde7c700b34f9435ad746984169888ae705Chris Lattner if (CallCE->isBuiltinCall() == Builtin::BI__builtin_constant_p) { 112142b83dde7c700b34f9435ad746984169888ae705Chris Lattner EvalResult EVResult; 112242b83dde7c700b34f9435ad746984169888ae705Chris Lattner if (!Evaluate(EVResult, Ctx) || EVResult.HasSideEffects) 112342b83dde7c700b34f9435ad746984169888ae705Chris Lattner return false; 112442b83dde7c700b34f9435ad746984169888ae705Chris Lattner assert(EVResult.Val.isInt() && "FP conditional expr not expected"); 112542b83dde7c700b34f9435ad746984169888ae705Chris Lattner Result = EVResult.Val.getInt(); 112642b83dde7c700b34f9435ad746984169888ae705Chris Lattner if (Loc) *Loc = EVResult.DiagLoc; 112742b83dde7c700b34f9435ad746984169888ae705Chris Lattner return true; 112842b83dde7c700b34f9435ad746984169888ae705Chris Lattner } 112928daa53db73341b7ee7f269924ccfca1c6d179acChris Lattner 11305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Evaluate the false one first, discard the result. 11313907323dd6665c0c4e383435cb145233f4533406Anders Carlsson if (FalseExp && !FalseExp->isIntegerConstantExpr(Result, Ctx, Loc, false)) 11325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 11335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Evalute the true one, capture the result. 11343907323dd6665c0c4e383435cb145233f4533406Anders Carlsson if (TrueExp && 11353907323dd6665c0c4e383435cb145233f4533406Anders Carlsson !TrueExp->isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated)) 11365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 11375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 11385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 113904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner case CXXDefaultArgExprClass: 114004421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return cast<CXXDefaultArgExpr>(this) 114104421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner ->isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated); 114264b45f7e0d3167f040841ac2920aead7f080730dSebastian Redl 114364b45f7e0d3167f040841ac2920aead7f080730dSebastian Redl case UnaryTypeTraitExprClass: 114464b45f7e0d3167f040841ac2920aead7f080730dSebastian Redl Result = cast<UnaryTypeTraitExpr>(this)->Evaluate(); 114564b45f7e0d3167f040841ac2920aead7f080730dSebastian Redl return true; 11465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 11475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Cases that are valid constant exprs fall through to here. 11495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result.setIsUnsigned(getType()->isUnsignedIntegerType()); 11505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 11515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 11525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// isNullPointerConstant - C99 6.3.2.3p3 - Return true if this is either an 11545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// integer constant expression with the value zero, or if this is one that is 11555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// cast to void*. 1156efa9b3877ef298bcb792600ac33521827e1f7fafAnders Carlssonbool Expr::isNullPointerConstant(ASTContext &Ctx) const 1157efa9b3877ef298bcb792600ac33521827e1f7fafAnders Carlsson{ 11580777972d38a3125efed962b045704c30ae6965cfSebastian Redl // Strip off a cast to void*, if it exists. Except in C++. 11590835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis if (const ExplicitCastExpr *CE = dyn_cast<ExplicitCastExpr>(this)) { 11606215dee86c0e715b9f2b0d401ab2a5fcf629f1afSebastian Redl if (!Ctx.getLangOptions().CPlusPlus) { 11610777972d38a3125efed962b045704c30ae6965cfSebastian Redl // Check that it is a cast to void*. 11620777972d38a3125efed962b045704c30ae6965cfSebastian Redl if (const PointerType *PT = CE->getType()->getAsPointerType()) { 11630777972d38a3125efed962b045704c30ae6965cfSebastian Redl QualType Pointee = PT->getPointeeType(); 11640777972d38a3125efed962b045704c30ae6965cfSebastian Redl if (Pointee.getCVRQualifiers() == 0 && 11650777972d38a3125efed962b045704c30ae6965cfSebastian Redl Pointee->isVoidType() && // to void* 11660777972d38a3125efed962b045704c30ae6965cfSebastian Redl CE->getSubExpr()->getType()->isIntegerType()) // from int. 1167d26527708b2b2f3b1d747f570efd10149d48364eAnders Carlsson return CE->getSubExpr()->isNullPointerConstant(Ctx); 11680777972d38a3125efed962b045704c30ae6965cfSebastian Redl } 11695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1170aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff } else if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(this)) { 1171aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // Ignore the ImplicitCastExpr type entirely. 1172d26527708b2b2f3b1d747f570efd10149d48364eAnders Carlsson return ICE->getSubExpr()->isNullPointerConstant(Ctx); 1173aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff } else if (const ParenExpr *PE = dyn_cast<ParenExpr>(this)) { 1174aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // Accept ((void*)0) as a null pointer constant, as many other 1175aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // implementations do. 1176d26527708b2b2f3b1d747f570efd10149d48364eAnders Carlsson return PE->getSubExpr()->isNullPointerConstant(Ctx); 11778123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner } else if (const CXXDefaultArgExpr *DefaultArg 11788123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner = dyn_cast<CXXDefaultArgExpr>(this)) { 117904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // See through default argument expressions 1180d26527708b2b2f3b1d747f570efd10149d48364eAnders Carlsson return DefaultArg->getExpr()->isNullPointerConstant(Ctx); 11812d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor } else if (isa<GNUNullExpr>(this)) { 11822d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor // The GNU __null extension is always a null pointer constant. 11832d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor return true; 1184aaffbf7c790a324ed114184db771aae2d2e9151cSteve Naroff } 11852d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 1186aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // This expression must be an integer type. 1187aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff if (!getType()->isIntegerType()) 1188aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff return false; 1189aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff 11905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we have an integer constant expression, we need to *evaluate* it and 11915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // test for the value 0. 1192d26527708b2b2f3b1d747f570efd10149d48364eAnders Carlsson // FIXME: We should probably return false if we're compiling in strict mode 1193d26527708b2b2f3b1d747f570efd10149d48364eAnders Carlsson // and Diag is not null (this indicates that the value was foldable but not 1194d26527708b2b2f3b1d747f570efd10149d48364eAnders Carlsson // an ICE. 1195d26527708b2b2f3b1d747f570efd10149d48364eAnders Carlsson EvalResult Result; 1196efa9b3877ef298bcb792600ac33521827e1f7fafAnders Carlsson return Evaluate(Result, Ctx) && !Result.HasSideEffects && 1197d26527708b2b2f3b1d747f570efd10149d48364eAnders Carlsson Result.Val.isInt() && Result.Val.getInt() == 0; 11985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 119931a458462c6cf417a84e0c47852b18fb22d79acbSteve Naroff 120027c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregor/// isBitField - Return true if this expression is a bit-field. 120127c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregorbool Expr::isBitField() { 120227c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregor Expr *E = this->IgnoreParenCasts(); 120327c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregor if (MemberExpr *MemRef = dyn_cast<MemberExpr>(E)) 120486f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (FieldDecl *Field = dyn_cast<FieldDecl>(MemRef->getMemberDecl())) 120586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return Field->isBitField(); 120627c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregor return false; 120727c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregor} 120827c8dc06f65d7abcf6a7e7f64a7960c9a150ca01Douglas Gregor 1209213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begemanunsigned ExtVectorElementExpr::getNumElements() const { 12108a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman if (const VectorType *VT = getType()->getAsVectorType()) 12118a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman return VT->getNumElements(); 12128a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman return 1; 12134d0ac88428b3ed7c6f3a2f4e758ea5424ecd70aeChris Lattner} 12144d0ac88428b3ed7c6f3a2f4e758ea5424ecd70aeChris Lattner 12158a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman/// containsDuplicateElements - Return true if any element access is repeated. 1216213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begemanbool ExtVectorElementExpr::containsDuplicateElements() const { 1217fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff const char *compStr = Accessor.getName(); 12187e3e9b152e06edf329ceb32190d3255f248d4d5fChris Lattner unsigned length = Accessor.getLength(); 1219190d6a25393995b42e32086949a68285ee423fb9Nate Begeman 1220190d6a25393995b42e32086949a68285ee423fb9Nate Begeman // Halving swizzles do not contain duplicate elements. 1221190d6a25393995b42e32086949a68285ee423fb9Nate Begeman if (!strcmp(compStr, "hi") || !strcmp(compStr, "lo") || 1222190d6a25393995b42e32086949a68285ee423fb9Nate Begeman !strcmp(compStr, "even") || !strcmp(compStr, "odd")) 1223190d6a25393995b42e32086949a68285ee423fb9Nate Begeman return false; 1224190d6a25393995b42e32086949a68285ee423fb9Nate Begeman 1225190d6a25393995b42e32086949a68285ee423fb9Nate Begeman // Advance past s-char prefix on hex swizzles. 1226190d6a25393995b42e32086949a68285ee423fb9Nate Begeman if (*compStr == 's') { 1227190d6a25393995b42e32086949a68285ee423fb9Nate Begeman compStr++; 1228190d6a25393995b42e32086949a68285ee423fb9Nate Begeman length--; 1229190d6a25393995b42e32086949a68285ee423fb9Nate Begeman } 1230fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff 12317e3e9b152e06edf329ceb32190d3255f248d4d5fChris Lattner for (unsigned i = 0; i != length-1; i++) { 1232fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff const char *s = compStr+i; 1233fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff for (const char c = *s++; *s; s++) 1234fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff if (c == *s) 1235fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff return true; 1236fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff } 1237fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff return false; 1238fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff} 1239b8f849da3cedee2f61ad98389115ddd04e439d60Chris Lattner 12408a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman/// getEncodedElementAccess - We encode the fields as a llvm ConstantArray. 12413b8d116703db8018f855cbb4733ace426422623bNate Begemanvoid ExtVectorElementExpr::getEncodedElementAccess( 12423b8d116703db8018f855cbb4733ace426422623bNate Begeman llvm::SmallVectorImpl<unsigned> &Elts) const { 12437e3e9b152e06edf329ceb32190d3255f248d4d5fChris Lattner const char *compStr = Accessor.getName(); 1244353417af9d254d4fd0eb7d0a3ff71c4d8594ac58Nate Begeman if (*compStr == 's') 1245353417af9d254d4fd0eb7d0a3ff71c4d8594ac58Nate Begeman compStr++; 1246353417af9d254d4fd0eb7d0a3ff71c4d8594ac58Nate Begeman 1247353417af9d254d4fd0eb7d0a3ff71c4d8594ac58Nate Begeman bool isHi = !strcmp(compStr, "hi"); 1248353417af9d254d4fd0eb7d0a3ff71c4d8594ac58Nate Begeman bool isLo = !strcmp(compStr, "lo"); 1249353417af9d254d4fd0eb7d0a3ff71c4d8594ac58Nate Begeman bool isEven = !strcmp(compStr, "even"); 1250353417af9d254d4fd0eb7d0a3ff71c4d8594ac58Nate Begeman bool isOdd = !strcmp(compStr, "odd"); 1251353417af9d254d4fd0eb7d0a3ff71c4d8594ac58Nate Begeman 12528a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman for (unsigned i = 0, e = getNumElements(); i != e; ++i) { 12538a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman uint64_t Index; 12548a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman 12558a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman if (isHi) 12568a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = e + i; 12578a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman else if (isLo) 12588a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = i; 12598a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman else if (isEven) 12608a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = 2 * i; 12618a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman else if (isOdd) 12628a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = 2 * i + 1; 12638a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman else 12648a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = ExtVectorType::getAccessorIdx(compStr[i]); 1265b8f849da3cedee2f61ad98389115ddd04e439d60Chris Lattner 12663b8d116703db8018f855cbb4733ace426422623bNate Begeman Elts.push_back(Index); 1267b8f849da3cedee2f61ad98389115ddd04e439d60Chris Lattner } 12688a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman} 12698a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman 127068d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff// constructor for instance messages. 1271bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve NaroffObjCMessageExpr::ObjCMessageExpr(Expr *receiver, Selector selInfo, 1272a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek QualType retType, ObjCMethodDecl *mproto, 1273db611d556f71f98b66b69514d45958d76e5727abSteve Naroff SourceLocation LBrac, SourceLocation RBrac, 127449f109c786f99eb7468dac3976db083a65493444Steve Naroff Expr **ArgExprs, unsigned nargs) 1275db611d556f71f98b66b69514d45958d76e5727abSteve Naroff : Expr(ObjCMessageExprClass, retType), SelName(selInfo), 1276ea958e57a370b641c5a69347b75e9f8e3b5a41a2Ted Kremenek MethodProto(mproto) { 127749f109c786f99eb7468dac3976db083a65493444Steve Naroff NumArgs = nargs; 12785549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SubExprs = new Stmt*[NumArgs+1]; 127968d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff SubExprs[RECEIVER] = receiver; 128049f109c786f99eb7468dac3976db083a65493444Steve Naroff if (NumArgs) { 128149f109c786f99eb7468dac3976db083a65493444Steve Naroff for (unsigned i = 0; i != NumArgs; ++i) 128268d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff SubExprs[i+ARGS_START] = static_cast<Expr *>(ArgExprs[i]); 128368d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff } 1284563477da25f824e37c535131695dc4dc9b68c465Steve Naroff LBracloc = LBrac; 1285563477da25f824e37c535131695dc4dc9b68c465Steve Naroff RBracloc = RBrac; 1286563477da25f824e37c535131695dc4dc9b68c465Steve Naroff} 1287563477da25f824e37c535131695dc4dc9b68c465Steve Naroff 128868d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff// constructor for class messages. 128968d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff// FIXME: clsName should be typed to ObjCInterfaceType 1290bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve NaroffObjCMessageExpr::ObjCMessageExpr(IdentifierInfo *clsName, Selector selInfo, 1291a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek QualType retType, ObjCMethodDecl *mproto, 1292db611d556f71f98b66b69514d45958d76e5727abSteve Naroff SourceLocation LBrac, SourceLocation RBrac, 129349f109c786f99eb7468dac3976db083a65493444Steve Naroff Expr **ArgExprs, unsigned nargs) 1294db611d556f71f98b66b69514d45958d76e5727abSteve Naroff : Expr(ObjCMessageExprClass, retType), SelName(selInfo), 1295ea958e57a370b641c5a69347b75e9f8e3b5a41a2Ted Kremenek MethodProto(mproto) { 129649f109c786f99eb7468dac3976db083a65493444Steve Naroff NumArgs = nargs; 12975549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SubExprs = new Stmt*[NumArgs+1]; 12984df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SubExprs[RECEIVER] = (Expr*) ((uintptr_t) clsName | IsClsMethDeclUnknown); 129949f109c786f99eb7468dac3976db083a65493444Steve Naroff if (NumArgs) { 130049f109c786f99eb7468dac3976db083a65493444Steve Naroff for (unsigned i = 0; i != NumArgs; ++i) 130168d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff SubExprs[i+ARGS_START] = static_cast<Expr *>(ArgExprs[i]); 130268d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff } 1303563477da25f824e37c535131695dc4dc9b68c465Steve Naroff LBracloc = LBrac; 1304563477da25f824e37c535131695dc4dc9b68c465Steve Naroff RBracloc = RBrac; 1305563477da25f824e37c535131695dc4dc9b68c465Steve Naroff} 1306563477da25f824e37c535131695dc4dc9b68c465Steve Naroff 13074df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek// constructor for class messages. 13084df728e368fa1f65ffc57572fed613dcca5b4fe8Ted KremenekObjCMessageExpr::ObjCMessageExpr(ObjCInterfaceDecl *cls, Selector selInfo, 13094df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek QualType retType, ObjCMethodDecl *mproto, 13104df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SourceLocation LBrac, SourceLocation RBrac, 13114df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek Expr **ArgExprs, unsigned nargs) 13124df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek: Expr(ObjCMessageExprClass, retType), SelName(selInfo), 13134df728e368fa1f65ffc57572fed613dcca5b4fe8Ted KremenekMethodProto(mproto) { 13144df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek NumArgs = nargs; 13154df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SubExprs = new Stmt*[NumArgs+1]; 13164df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SubExprs[RECEIVER] = (Expr*) ((uintptr_t) cls | IsClsMethDeclKnown); 13174df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek if (NumArgs) { 13184df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek for (unsigned i = 0; i != NumArgs; ++i) 13194df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SubExprs[i+ARGS_START] = static_cast<Expr *>(ArgExprs[i]); 13204df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek } 13214df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek LBracloc = LBrac; 13224df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek RBracloc = RBrac; 13234df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek} 13244df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek 13254df728e368fa1f65ffc57572fed613dcca5b4fe8Ted KremenekObjCMessageExpr::ClassInfo ObjCMessageExpr::getClassInfo() const { 13264df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek uintptr_t x = (uintptr_t) SubExprs[RECEIVER]; 13274df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek switch (x & Flags) { 13284df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek default: 13294df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek assert(false && "Invalid ObjCMessageExpr."); 13304df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek case IsInstMeth: 13314df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek return ClassInfo(0, 0); 13324df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek case IsClsMethDeclUnknown: 13334df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek return ClassInfo(0, (IdentifierInfo*) (x & ~Flags)); 13344df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek case IsClsMethDeclKnown: { 13354df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek ObjCInterfaceDecl* D = (ObjCInterfaceDecl*) (x & ~Flags); 13364df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek return ClassInfo(D, D->getIdentifier()); 13374df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek } 13384df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek } 13394df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek} 13404df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek 134127437caadea35f84d550cd29f024fcf3ea240eecChris Lattnerbool ChooseExpr::isConditionTrue(ASTContext &C) const { 134232442bbc98bafa512fa42d46fedf60ed7d79f574Daniel Dunbar return getCond()->getIntegerConstantExprValue(C) != 0; 134327437caadea35f84d550cd29f024fcf3ea240eecChris Lattner} 134427437caadea35f84d550cd29f024fcf3ea240eecChris Lattner 1345670a62cd1d51042ea076cda5e93f26a1d8327fb3Chris Lattnerstatic int64_t evaluateOffsetOf(ASTContext& C, const Expr *E) { 13465a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { 13475a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson QualType Ty = ME->getBase()->getType(); 13485a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 13495a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson RecordDecl *RD = Ty->getAsRecordType()->getDecl(); 135098be4943e8dc4f3905629a7102668960873cf863Chris Lattner const ASTRecordLayout &RL = C.getASTRecordLayout(RD); 135186f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (FieldDecl *FD = dyn_cast<FieldDecl>(ME->getMemberDecl())) { 135286f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // FIXME: This is linear time. And the fact that we're indexing 135386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // into the layout by position in the record means that we're 135486f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // either stuck numbering the fields in the AST or we have to keep 135586f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor // the linear search (yuck and yuck). 135686f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor unsigned i = 0; 135786f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor for (RecordDecl::field_iterator Field = RD->field_begin(), 135886f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor FieldEnd = RD->field_end(); 135986f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor Field != FieldEnd; (void)++Field, ++i) { 136086f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor if (*Field == FD) 136186f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor break; 136286f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor } 136386f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor 136486f194083504938df72135b5b66bf0c5cafd9498Douglas Gregor return RL.getFieldOffset(i) + evaluateOffsetOf(C, ME->getBase()); 13655a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson } 13665a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson } else if (const ArraySubscriptExpr *ASE = dyn_cast<ArraySubscriptExpr>(E)) { 13675a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson const Expr *Base = ASE->getBase(); 13685a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 136998be4943e8dc4f3905629a7102668960873cf863Chris Lattner int64_t size = C.getTypeSize(ASE->getType()); 137032442bbc98bafa512fa42d46fedf60ed7d79f574Daniel Dunbar size *= ASE->getIdx()->getIntegerConstantExprValue(C).getSExtValue(); 13715a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 13725a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson return size + evaluateOffsetOf(C, Base); 13735a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson } else if (isa<CompoundLiteralExpr>(E)) 13745a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson return 0; 13755a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 13765a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson assert(0 && "Unknown offsetof subexpression!"); 13775a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson return 0; 13785a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson} 13795a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 13805a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlssonint64_t UnaryOperator::evaluateOffsetOf(ASTContext& C) const 13815a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson{ 13825a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson assert(Opc == OffsetOf && "Unary operator not offsetof!"); 13835a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 138498be4943e8dc4f3905629a7102668960873cf863Chris Lattner unsigned CharSize = C.Target.getCharWidth(); 13855549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return ::evaluateOffsetOf(C, cast<Expr>(Val)) / CharSize; 13865a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson} 13875a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 13880518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redlvoid SizeOfAlignOfExpr::Destroy(ASTContext& C) { 13890518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // Override default behavior of traversing children. If this has a type 13900518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // operand and the type is a variable-length array, the child iteration 13910518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // will iterate over the size expression. However, this expression belongs 13920518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // to the type, not to this, so we don't want to delete it. 13930518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // We still want to delete this expression. 13940518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // FIXME: Same as in Stmt::Destroy - will be eventually in ASTContext's 13950518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // pool allocator. 13960518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl if (isArgumentType()) 13970518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl delete this; 13980518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl else 13990518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl Expr::Destroy(C); 14009048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar} 14019048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar 140277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek//===----------------------------------------------------------------------===// 140305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor// DesignatedInitExpr 140405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor//===----------------------------------------------------------------------===// 140505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 140605c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorIdentifierInfo *DesignatedInitExpr::Designator::getFieldName() { 140705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert(Kind == FieldDesignator && "Only valid on a field designator"); 140805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field.NameOrField & 0x01) 140905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return reinterpret_cast<IdentifierInfo *>(Field.NameOrField&~0x01); 141005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else 141105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return getField()->getIdentifier(); 141205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 141305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 141405c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorDesignatedInitExpr * 141505c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorDesignatedInitExpr::Create(ASTContext &C, Designator *Designators, 141605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned NumDesignators, 141705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr **IndexExprs, unsigned NumIndexExprs, 141805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation ColonOrEqualLoc, 141905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool UsesColonSyntax, Expr *Init) { 1420c0ac4923f08b25ae973a8ee7942cf3eb89da57b7Steve Naroff void *Mem = C.Allocate(sizeof(DesignatedInitExpr) + 1421c0ac4923f08b25ae973a8ee7942cf3eb89da57b7Steve Naroff sizeof(Designator) * NumDesignators + 1422c0ac4923f08b25ae973a8ee7942cf3eb89da57b7Steve Naroff sizeof(Stmt *) * (NumIndexExprs + 1), 8); 142305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor DesignatedInitExpr *DIE 142405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor = new (Mem) DesignatedInitExpr(C.VoidTy, NumDesignators, 142505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ColonOrEqualLoc, UsesColonSyntax, 142605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor NumIndexExprs + 1); 142705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 142805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Fill in the designators 142905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor unsigned ExpectedNumSubExprs = 0; 143005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor designators_iterator Desig = DIE->designators_begin(); 143105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor for (unsigned Idx = 0; Idx < NumDesignators; ++Idx, ++Desig) { 143205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor new (static_cast<void*>(Desig)) Designator(Designators[Idx]); 143305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Designators[Idx].isArrayDesignator()) 143405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++ExpectedNumSubExprs; 143505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else if (Designators[Idx].isArrayRangeDesignator()) 143605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ExpectedNumSubExprs += 2; 143705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 143805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert(ExpectedNumSubExprs == NumIndexExprs && "Wrong number of indices!"); 143905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 144005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Fill in the subexpressions, including the initializer expression. 144105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor child_iterator Child = DIE->child_begin(); 144205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor *Child++ = Init; 144305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor for (unsigned Idx = 0; Idx < NumIndexExprs; ++Idx, ++Child) 144405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor *Child = IndexExprs[Idx]; 144505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 144605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return DIE; 144705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 144805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 144905c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorSourceRange DesignatedInitExpr::getSourceRange() const { 145005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation StartLoc; 145105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Designator &First = *const_cast<DesignatedInitExpr*>(this)->designators_begin(); 145205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (First.isFieldDesignator()) { 145305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (UsesColonSyntax) 145405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor StartLoc = SourceLocation::getFromRawEncoding(First.Field.FieldLoc); 145505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else 145605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor StartLoc = SourceLocation::getFromRawEncoding(First.Field.DotLoc); 145705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } else 145805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor StartLoc = SourceLocation::getFromRawEncoding(First.ArrayOrRange.LBracketLoc); 145905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return SourceRange(StartLoc, getInit()->getSourceRange().getEnd()); 146005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 146105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 146205c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorDesignatedInitExpr::designators_iterator DesignatedInitExpr::designators_begin() { 146305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor char* Ptr = static_cast<char*>(static_cast<void *>(this)); 146405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Ptr += sizeof(DesignatedInitExpr); 146505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return static_cast<Designator*>(static_cast<void*>(Ptr)); 146605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 146705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 146805c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorDesignatedInitExpr::designators_iterator DesignatedInitExpr::designators_end() { 146905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return designators_begin() + NumDesignators; 147005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 147105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 147205c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorExpr *DesignatedInitExpr::getArrayIndex(const Designator& D) { 147305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert(D.Kind == Designator::ArrayDesignator && "Requires array designator"); 147405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor char* Ptr = static_cast<char*>(static_cast<void *>(this)); 147505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Ptr += sizeof(DesignatedInitExpr); 147605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Ptr += sizeof(Designator) * NumDesignators; 147705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Stmt **SubExprs = reinterpret_cast<Stmt**>(reinterpret_cast<void**>(Ptr)); 147805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return cast<Expr>(*(SubExprs + D.ArrayOrRange.Index + 1)); 147905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 148005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 148105c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorExpr *DesignatedInitExpr::getArrayRangeStart(const Designator& D) { 148205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert(D.Kind == Designator::ArrayRangeDesignator && 148305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor "Requires array range designator"); 148405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor char* Ptr = static_cast<char*>(static_cast<void *>(this)); 148505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Ptr += sizeof(DesignatedInitExpr); 148605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Ptr += sizeof(Designator) * NumDesignators; 148705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Stmt **SubExprs = reinterpret_cast<Stmt**>(reinterpret_cast<void**>(Ptr)); 148805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return cast<Expr>(*(SubExprs + D.ArrayOrRange.Index + 1)); 148905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 149005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 149105c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorExpr *DesignatedInitExpr::getArrayRangeEnd(const Designator& D) { 149205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor assert(D.Kind == Designator::ArrayRangeDesignator && 149305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor "Requires array range designator"); 149405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor char* Ptr = static_cast<char*>(static_cast<void *>(this)); 149505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Ptr += sizeof(DesignatedInitExpr); 149605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Ptr += sizeof(Designator) * NumDesignators; 149705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Stmt **SubExprs = reinterpret_cast<Stmt**>(reinterpret_cast<void**>(Ptr)); 149805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return cast<Expr>(*(SubExprs + D.ArrayOrRange.Index + 2)); 149905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 150005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 150105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor//===----------------------------------------------------------------------===// 1502ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenek// ExprIterator. 1503ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenek//===----------------------------------------------------------------------===// 1504ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenek 1505ce2fc3a343ea6098a96d587071cee7299f11957aTed KremenekExpr* ExprIterator::operator[](size_t idx) { return cast<Expr>(I[idx]); } 1506ce2fc3a343ea6098a96d587071cee7299f11957aTed KremenekExpr* ExprIterator::operator*() const { return cast<Expr>(*I); } 1507ce2fc3a343ea6098a96d587071cee7299f11957aTed KremenekExpr* ExprIterator::operator->() const { return cast<Expr>(*I); } 1508ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenekconst Expr* ConstExprIterator::operator[](size_t idx) const { 1509ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenek return cast<Expr>(I[idx]); 1510ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenek} 1511ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenekconst Expr* ConstExprIterator::operator*() const { return cast<Expr>(*I); } 1512ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenekconst Expr* ConstExprIterator::operator->() const { return cast<Expr>(*I); } 1513ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenek 1514ce2fc3a343ea6098a96d587071cee7299f11957aTed Kremenek//===----------------------------------------------------------------------===// 151577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// Child Iterators for iterating over subexpressions/substatements 151677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek//===----------------------------------------------------------------------===// 151777ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 151877ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// DeclRefExpr 15199ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator DeclRefExpr::child_begin() { return child_iterator(); } 15209ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator DeclRefExpr::child_end() { return child_iterator(); } 152177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 15227779db42c94405ecbd6ee45efb293483fa6cbeffSteve Naroff// ObjCIvarRefExpr 15235549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ObjCIvarRefExpr::child_begin() { return &Base; } 15245549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ObjCIvarRefExpr::child_end() { return &Base+1; } 15257779db42c94405ecbd6ee45efb293483fa6cbeffSteve Naroff 1526e3e9add4fd788927df6f545570e7838db59c01d7Steve Naroff// ObjCPropertyRefExpr 15275549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ObjCPropertyRefExpr::child_begin() { return &Base; } 15285549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ObjCPropertyRefExpr::child_end() { return &Base+1; } 1529ae7840776d6cd31b4d7a4a345b61bcbb3744df6cSteve Naroff 15305daf570d0ce027e18ed5f9d66e6b2a14a40b720dFariborz Jahanian// ObjCKVCRefExpr 15315daf570d0ce027e18ed5f9d66e6b2a14a40b720dFariborz JahanianStmt::child_iterator ObjCKVCRefExpr::child_begin() { return &Base; } 15325daf570d0ce027e18ed5f9d66e6b2a14a40b720dFariborz JahanianStmt::child_iterator ObjCKVCRefExpr::child_end() { return &Base+1; } 15335daf570d0ce027e18ed5f9d66e6b2a14a40b720dFariborz Jahanian 1534cd9b46e5442a3ef17f83f75177d8545cb5b3e2b9Douglas Gregor// ObjCSuperExpr 1535cd9b46e5442a3ef17f83f75177d8545cb5b3e2b9Douglas GregorStmt::child_iterator ObjCSuperExpr::child_begin() { return child_iterator(); } 1536cd9b46e5442a3ef17f83f75177d8545cb5b3e2b9Douglas GregorStmt::child_iterator ObjCSuperExpr::child_end() { return child_iterator(); } 1537cd9b46e5442a3ef17f83f75177d8545cb5b3e2b9Douglas Gregor 1538d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner// PredefinedExpr 1539d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris LattnerStmt::child_iterator PredefinedExpr::child_begin() { return child_iterator(); } 1540d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris LattnerStmt::child_iterator PredefinedExpr::child_end() { return child_iterator(); } 154177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 154277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// IntegerLiteral 15439ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator IntegerLiteral::child_begin() { return child_iterator(); } 15449ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator IntegerLiteral::child_end() { return child_iterator(); } 154577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 154677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// CharacterLiteral 15479ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator CharacterLiteral::child_begin() { return child_iterator(); } 15489ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator CharacterLiteral::child_end() { return child_iterator(); } 154977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 155077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// FloatingLiteral 15519ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator FloatingLiteral::child_begin() { return child_iterator(); } 15529ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator FloatingLiteral::child_end() { return child_iterator(); } 155377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 15545d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner// ImaginaryLiteral 15555549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ImaginaryLiteral::child_begin() { return &Val; } 15565549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ImaginaryLiteral::child_end() { return &Val+1; } 15575d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner 155877ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// StringLiteral 15599ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator StringLiteral::child_begin() { return child_iterator(); } 15609ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator StringLiteral::child_end() { return child_iterator(); } 156177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 156277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// ParenExpr 15635549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ParenExpr::child_begin() { return &Val; } 15645549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ParenExpr::child_end() { return &Val+1; } 156577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 156677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// UnaryOperator 15675549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator UnaryOperator::child_begin() { return &Val; } 15685549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator UnaryOperator::child_end() { return &Val+1; } 156977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 15700518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl// SizeOfAlignOfExpr 15710518999d3adcc289997bd974dce90cc97f5c1c44Sebastian RedlStmt::child_iterator SizeOfAlignOfExpr::child_begin() { 15720518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // If this is of a type and the type is a VLA type (and not a typedef), the 15730518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // size expression of the VLA needs to be treated as an executable expression. 15740518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl // Why isn't this weirdness documented better in StmtIterator? 15750518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl if (isArgumentType()) { 15760518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl if (VariableArrayType* T = dyn_cast<VariableArrayType>( 15770518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl getArgumentType().getTypePtr())) 15780518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl return child_iterator(T); 15790518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl return child_iterator(); 15800518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl } 1581d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl return child_iterator(&Argument.Ex); 15829ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 15830518999d3adcc289997bd974dce90cc97f5c1c44Sebastian RedlStmt::child_iterator SizeOfAlignOfExpr::child_end() { 15840518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl if (isArgumentType()) 15850518999d3adcc289997bd974dce90cc97f5c1c44Sebastian Redl return child_iterator(); 1586d457589fc69dc7a9c80cd74d317c0b81a35a27c9Sebastian Redl return child_iterator(&Argument.Ex + 1); 15879ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 158877ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 158977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// ArraySubscriptExpr 15901237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator ArraySubscriptExpr::child_begin() { 15915549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 159277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek} 15931237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator ArraySubscriptExpr::child_end() { 15945549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+END_EXPR; 159577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek} 159677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 159777ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// CallExpr 15981237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator CallExpr::child_begin() { 15995549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 160077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek} 16011237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator CallExpr::child_end() { 16025549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+NumArgs+ARGS_START; 160377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek} 16041237c673c07f9d827129ba02720108816abde562Ted Kremenek 16051237c673c07f9d827129ba02720108816abde562Ted Kremenek// MemberExpr 16065549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator MemberExpr::child_begin() { return &Base; } 16075549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator MemberExpr::child_end() { return &Base+1; } 16081237c673c07f9d827129ba02720108816abde562Ted Kremenek 1609213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman// ExtVectorElementExpr 16105549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ExtVectorElementExpr::child_begin() { return &Base; } 16115549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ExtVectorElementExpr::child_end() { return &Base+1; } 16121237c673c07f9d827129ba02720108816abde562Ted Kremenek 16131237c673c07f9d827129ba02720108816abde562Ted Kremenek// CompoundLiteralExpr 16145549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator CompoundLiteralExpr::child_begin() { return &Init; } 16155549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator CompoundLiteralExpr::child_end() { return &Init+1; } 16161237c673c07f9d827129ba02720108816abde562Ted Kremenek 16171237c673c07f9d827129ba02720108816abde562Ted Kremenek// CastExpr 16185549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator CastExpr::child_begin() { return &Op; } 16195549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator CastExpr::child_end() { return &Op+1; } 16201237c673c07f9d827129ba02720108816abde562Ted Kremenek 16211237c673c07f9d827129ba02720108816abde562Ted Kremenek// BinaryOperator 16221237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator BinaryOperator::child_begin() { 16235549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 16241237c673c07f9d827129ba02720108816abde562Ted Kremenek} 16251237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator BinaryOperator::child_end() { 16265549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+END_EXPR; 16271237c673c07f9d827129ba02720108816abde562Ted Kremenek} 16281237c673c07f9d827129ba02720108816abde562Ted Kremenek 16291237c673c07f9d827129ba02720108816abde562Ted Kremenek// ConditionalOperator 16301237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator ConditionalOperator::child_begin() { 16315549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 16321237c673c07f9d827129ba02720108816abde562Ted Kremenek} 16331237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator ConditionalOperator::child_end() { 16345549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+END_EXPR; 16351237c673c07f9d827129ba02720108816abde562Ted Kremenek} 16361237c673c07f9d827129ba02720108816abde562Ted Kremenek 16371237c673c07f9d827129ba02720108816abde562Ted Kremenek// AddrLabelExpr 16389ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator AddrLabelExpr::child_begin() { return child_iterator(); } 16399ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator AddrLabelExpr::child_end() { return child_iterator(); } 16401237c673c07f9d827129ba02720108816abde562Ted Kremenek 16411237c673c07f9d827129ba02720108816abde562Ted Kremenek// StmtExpr 16425549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator StmtExpr::child_begin() { return &SubStmt; } 16435549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator StmtExpr::child_end() { return &SubStmt+1; } 16441237c673c07f9d827129ba02720108816abde562Ted Kremenek 16451237c673c07f9d827129ba02720108816abde562Ted Kremenek// TypesCompatibleExpr 16469ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator TypesCompatibleExpr::child_begin() { 16479ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 16489ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 16499ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek 16509ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator TypesCompatibleExpr::child_end() { 16519ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 16529ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 16531237c673c07f9d827129ba02720108816abde562Ted Kremenek 16541237c673c07f9d827129ba02720108816abde562Ted Kremenek// ChooseExpr 16555549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ChooseExpr::child_begin() { return &SubExprs[0]; } 16565549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ChooseExpr::child_end() { return &SubExprs[0]+END_EXPR; } 16572d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor 16582d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas Gregor// GNUNullExpr 16592d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas GregorStmt::child_iterator GNUNullExpr::child_begin() { return child_iterator(); } 16602d8b273470684a9cd47f0ce24743cc1f71ef7cbcDouglas GregorStmt::child_iterator GNUNullExpr::child_end() { return child_iterator(); } 16611237c673c07f9d827129ba02720108816abde562Ted Kremenek 1662e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman// OverloadExpr 16635549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator OverloadExpr::child_begin() { return &SubExprs[0]; } 16645549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator OverloadExpr::child_end() { return &SubExprs[0]+NumExprs; } 1665e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman 1666d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman// ShuffleVectorExpr 1667d38617c8a50f9729c254ab76cd359af797c6739bEli FriedmanStmt::child_iterator ShuffleVectorExpr::child_begin() { 16685549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 1669d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman} 1670d38617c8a50f9729c254ab76cd359af797c6739bEli FriedmanStmt::child_iterator ShuffleVectorExpr::child_end() { 16715549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+NumExprs; 1672d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman} 1673d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 16747c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson// VAArgExpr 16755549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator VAArgExpr::child_begin() { return &Val; } 16765549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator VAArgExpr::child_end() { return &Val+1; } 16777c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson 167866b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson// InitListExpr 167966b5a8a39088598c01a9fa6f032dc908612dc8ecAnders CarlssonStmt::child_iterator InitListExpr::child_begin() { 16805549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return InitExprs.size() ? &InitExprs[0] : 0; 168166b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson} 168266b5a8a39088598c01a9fa6f032dc908612dc8ecAnders CarlssonStmt::child_iterator InitListExpr::child_end() { 16835549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return InitExprs.size() ? &InitExprs[0] + InitExprs.size() : 0; 168466b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson} 168566b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson 16863498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor// DesignatedInitExpr 168705c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorStmt::child_iterator DesignatedInitExpr::child_begin() { 168805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor char* Ptr = static_cast<char*>(static_cast<void *>(this)); 168905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Ptr += sizeof(DesignatedInitExpr); 169005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Ptr += sizeof(Designator) * NumDesignators; 169105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return reinterpret_cast<Stmt**>(reinterpret_cast<void**>(Ptr)); 169205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 169305c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorStmt::child_iterator DesignatedInitExpr::child_end() { 169405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return child_iterator(&*child_begin() + NumSubExprs); 169505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 169605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 16973498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor// ImplicitValueInitExpr 16983498bdb9e9cb300de74c7b51c92608e2902b2348Douglas GregorStmt::child_iterator ImplicitValueInitExpr::child_begin() { 16993498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return child_iterator(); 17003498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor} 17013498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 17023498bdb9e9cb300de74c7b51c92608e2902b2348Douglas GregorStmt::child_iterator ImplicitValueInitExpr::child_end() { 17033498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return child_iterator(); 17043498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor} 17053498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 17061237c673c07f9d827129ba02720108816abde562Ted Kremenek// ObjCStringLiteral 17079ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCStringLiteral::child_begin() { 17089ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 17099ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 17109ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCStringLiteral::child_end() { 17119ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 17129ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 17131237c673c07f9d827129ba02720108816abde562Ted Kremenek 17141237c673c07f9d827129ba02720108816abde562Ted Kremenek// ObjCEncodeExpr 17159ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCEncodeExpr::child_begin() { return child_iterator(); } 17169ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCEncodeExpr::child_end() { return child_iterator(); } 17171237c673c07f9d827129ba02720108816abde562Ted Kremenek 1718b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian// ObjCSelectorExpr 17199ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCSelectorExpr::child_begin() { 17209ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 17219ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 17229ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCSelectorExpr::child_end() { 17239ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 17249ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 1725b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian 1726390d50a725497e99247dc104a7d2c2a255d3af14Fariborz Jahanian// ObjCProtocolExpr 17279ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCProtocolExpr::child_begin() { 17289ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 17299ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 17309ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCProtocolExpr::child_end() { 17319ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 17329ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 1733390d50a725497e99247dc104a7d2c2a255d3af14Fariborz Jahanian 1734563477da25f824e37c535131695dc4dc9b68c465Steve Naroff// ObjCMessageExpr 1735ea958e57a370b641c5a69347b75e9f8e3b5a41a2Ted KremenekStmt::child_iterator ObjCMessageExpr::child_begin() { 17365549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return getReceiver() ? &SubExprs[0] : &SubExprs[0] + ARGS_START; 1737563477da25f824e37c535131695dc4dc9b68c465Steve Naroff} 1738563477da25f824e37c535131695dc4dc9b68c465Steve NaroffStmt::child_iterator ObjCMessageExpr::child_end() { 17395549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+ARGS_START+getNumArgs(); 1740563477da25f824e37c535131695dc4dc9b68c465Steve Naroff} 1741563477da25f824e37c535131695dc4dc9b68c465Steve Naroff 17424eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff// Blocks 174356ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve NaroffStmt::child_iterator BlockExpr::child_begin() { return child_iterator(); } 174456ee6896f2efebffb4a2cce5a7610cdf1eddbbbeSteve NaroffStmt::child_iterator BlockExpr::child_end() { return child_iterator(); } 17454eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 17469da13f9ddb2567e36f4bbee7b3c32f54aeb76d5bTed KremenekStmt::child_iterator BlockDeclRefExpr::child_begin() { return child_iterator();} 17479da13f9ddb2567e36f4bbee7b3c32f54aeb76d5bTed KremenekStmt::child_iterator BlockDeclRefExpr::child_end() { return child_iterator(); } 1748