Expr.cpp revision 4f6a7d7ead09b439216c32f2de806a998aeb222a
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" 15c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar#include "clang/AST/DeclObjC.h" 162eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner#include "clang/AST/ASTContext.h" 17e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/RecordLayout.h" 185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/StmtVisitor.h" 19da5a6b6d9fd52899499d5b7b46273ec844dcaa6eChris Lattner#include "clang/Basic/TargetInfo.h" 205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Primary Expressions. 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 26da8249e57f3badecf925571881fe57243935c6c1Chris Lattner/// getValueAsApproximateDouble - This returns the value as an inaccurate 27da8249e57f3badecf925571881fe57243935c6c1Chris Lattner/// double. Note that this may cause loss of precision, but is useful for 28da8249e57f3badecf925571881fe57243935c6c1Chris Lattner/// debugging dumps, etc. 29da8249e57f3badecf925571881fe57243935c6c1Chris Lattnerdouble FloatingLiteral::getValueAsApproximateDouble() const { 30da8249e57f3badecf925571881fe57243935c6c1Chris Lattner llvm::APFloat V = getValue(); 31da8249e57f3badecf925571881fe57243935c6c1Chris Lattner V.convert(llvm::APFloat::IEEEdouble, llvm::APFloat::rmNearestTiesToEven); 32da8249e57f3badecf925571881fe57243935c6c1Chris Lattner return V.convertToDouble(); 33da8249e57f3badecf925571881fe57243935c6c1Chris Lattner} 34da8249e57f3badecf925571881fe57243935c6c1Chris Lattner 35da8249e57f3badecf925571881fe57243935c6c1Chris Lattner 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerStringLiteral::StringLiteral(const char *strData, unsigned byteLength, 375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool Wide, QualType t, SourceLocation firstLoc, 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation lastLoc) : 395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Expr(StringLiteralClass, t) { 405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // OPTIMIZE: could allocate this appended to the StringLiteral. 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer char *AStrData = new char[byteLength]; 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer memcpy(AStrData, strData, byteLength); 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer StrData = AStrData; 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ByteLength = byteLength; 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IsWide = Wide; 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer firstTokLoc = firstLoc; 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer lastTokLoc = lastLoc; 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerStringLiteral::~StringLiteral() { 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer delete[] StrData; 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool UnaryOperator::isPostfix(Opcode Op) { 555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Op) { 565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PostInc: 575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PostDec: 585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 645a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenekbool UnaryOperator::isPrefix(Opcode Op) { 655a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek switch (Op) { 665a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek case PreInc: 675a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek case PreDec: 685a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek return true; 695a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek default: 705a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek return false; 715a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek } 725a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek} 735a56ac30d04e8f0431a08980885662a47a6308aaTed Kremenek 745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// corresponds to, e.g. "sizeof" or "[pre]++". 765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerconst char *UnaryOperator::getOpcodeStr(Opcode Op) { 775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Op) { 785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: assert(0 && "Unknown unary operator"); 795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PostInc: return "++"; 805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PostDec: return "--"; 815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PreInc: return "++"; 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case PreDec: return "--"; 835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case AddrOf: return "&"; 845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Deref: return "*"; 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Plus: return "+"; 865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Minus: return "-"; 875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Not: return "~"; 885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LNot: return "!"; 895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Real: return "__real"; 905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Imag: return "__imag"; 915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case SizeOf: return "sizeof"; 925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case AlignOf: return "alignof"; 935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Extension: return "__extension__"; 9473d0d4fac161ed12926e010dcf8b448a8de6a2ecChris Lattner case OffsetOf: return "__builtin_offsetof"; 955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Postfix Operators. 1005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 102e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerCallExpr::CallExpr(Expr *fn, Expr **args, unsigned numargs, QualType t, 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation rparenloc) 10577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek : Expr(CallExprClass, t), NumArgs(numargs) { 1065549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SubExprs = new Stmt*[numargs+1]; 10777ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek SubExprs[FN] = fn; 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; i != numargs; ++i) 10977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek SubExprs[i+ARGS_START] = args[i]; 1105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer RParenLoc = rparenloc; 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 113d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner/// setNumArgs - This changes the number of arguments present in this call. 114d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner/// Any orphaned expressions are deleted by this, and any new operands are set 115d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner/// to null. 116d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattnervoid CallExpr::setNumArgs(unsigned NumArgs) { 117d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // No change, just return. 118d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner if (NumArgs == getNumArgs()) return; 119d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 120d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // If shrinking # arguments, just delete the extras and forgot them. 121d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner if (NumArgs < getNumArgs()) { 122d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner for (unsigned i = NumArgs, e = getNumArgs(); i != e; ++i) 123d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner delete getArg(i); 124d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner this->NumArgs = NumArgs; 125d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner return; 126d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner } 127d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 128d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // Otherwise, we are growing the # arguments. New an bigger argument array. 1295549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek Stmt **NewSubExprs = new Stmt*[NumArgs+1]; 130d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // Copy over args. 131d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner for (unsigned i = 0; i != getNumArgs()+ARGS_START; ++i) 132d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner NewSubExprs[i] = SubExprs[i]; 133d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner // Null out new args. 134d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner for (unsigned i = getNumArgs()+ARGS_START; i != NumArgs+ARGS_START; ++i) 135d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner NewSubExprs[i] = 0; 136d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 137d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner delete[] SubExprs; 138d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner SubExprs = NewSubExprs; 139d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner this->NumArgs = NumArgs; 140d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner} 141d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 142c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroffbool CallExpr::isBuiltinConstantExpr() const { 143c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff // All simple function calls (e.g. func()) are implicitly cast to pointer to 144c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff // function. As a result, we try and obtain the DeclRefExpr from the 145c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff // ImplicitCastExpr. 146c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(getCallee()); 147c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff if (!ICE) // FIXME: deal with more complex calls (e.g. (func)(), (*func)()). 148c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff return false; 149c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff 150c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(ICE->getSubExpr()); 151c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff if (!DRE) 152c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff return false; 153c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff 154bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson const FunctionDecl *FDecl = dyn_cast<FunctionDecl>(DRE->getDecl()); 155bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson if (!FDecl) 156bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson return false; 157bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson 158bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson unsigned builtinID = FDecl->getIdentifier()->getBuiltinID(); 159bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson if (!builtinID) 160bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson return false; 161bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson 162bcba201a1118d7852b8b97187d495ae2a4f49519Anders Carlsson // We have a builtin that is a constant expression 163861dc46e3c53d64d8685fd9a0f95faac710b61c6Eli Friedman return builtinID == Builtin::BI__builtin___CFStringMakeConstantString || 1642ea2b5e2b044739f4f5840bc1271abfa15a3101dAnders Carlsson builtinID == Builtin::BI__builtin_classify_type || 1652ea2b5e2b044739f4f5840bc1271abfa15a3101dAnders Carlsson builtinID == Builtin::BI__builtin_huge_valf; 166c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff} 167d18b3299debb7b0dbd9d34d9369189dc98c87f53Chris Lattner 16813b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroffbool CallExpr::isBuiltinClassifyType(llvm::APSInt &Result) const { 16913b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff // The following enum mimics gcc's internal "typeclass.h" file. 17013b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff enum gcc_type_class { 17113b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff no_type_class = -1, 17213b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff void_type_class, integer_type_class, char_type_class, 17313b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff enumeral_type_class, boolean_type_class, 17413b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff pointer_type_class, reference_type_class, offset_type_class, 17513b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff real_type_class, complex_type_class, 17613b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff function_type_class, method_type_class, 17713b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff record_type_class, union_type_class, 17813b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff array_type_class, string_type_class, 17913b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff lang_type_class 18013b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff }; 18113b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result.setIsSigned(true); 18213b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff 18313b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff // All simple function calls (e.g. func()) are implicitly cast to pointer to 18413b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff // function. As a result, we try and obtain the DeclRefExpr from the 18513b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff // ImplicitCastExpr. 18613b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(getCallee()); 18713b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff if (!ICE) // FIXME: deal with more complex calls (e.g. (func)(), (*func)()). 18813b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff return false; 18913b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(ICE->getSubExpr()); 19013b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff if (!DRE) 19113b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff return false; 19213b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff 19313b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff // We have a DeclRefExpr. 19413b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff if (strcmp(DRE->getDecl()->getName(), "__builtin_classify_type") == 0) { 19513b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff // If no argument was supplied, default to "no_type_class". This isn't 19613b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff // ideal, however it's what gcc does. 19713b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = static_cast<uint64_t>(no_type_class); 19813b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff if (NumArgs >= 1) { 19913b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff QualType argType = getArg(0)->getType(); 20013b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff 20113b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff if (argType->isVoidType()) 20213b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = void_type_class; 20313b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isEnumeralType()) 20413b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = enumeral_type_class; 20513b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isBooleanType()) 20613b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = boolean_type_class; 20713b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isCharType()) 20813b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = string_type_class; // gcc doesn't appear to use char_type_class 20913b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isIntegerType()) 21013b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = integer_type_class; 21113b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isPointerType()) 21213b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = pointer_type_class; 21313b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isReferenceType()) 21413b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = reference_type_class; 21513b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isRealType()) 21613b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = real_type_class; 21713b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isComplexType()) 21813b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = complex_type_class; 21913b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isFunctionType()) 22013b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = function_type_class; 22113b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isStructureType()) 22213b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = record_type_class; 22313b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isUnionType()) 22413b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = union_type_class; 22513b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isArrayType()) 22613b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = array_type_class; 22713b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else if (argType->isUnionType()) 22813b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff Result = union_type_class; 22913b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff else // FIXME: offset_type_class, method_type_class, & lang_type_class? 2303ef5bc03d0bfc05fd76fc83beeb1b7ddbbb463daChris Lattner assert(0 && "CallExpr::isBuiltinClassifyType(): unimplemented type"); 23113b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff } 23213b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff return true; 23313b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff } 23413b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff return false; 23513b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff} 23613b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it 2385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// corresponds to, e.g. "<<=". 2395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerconst char *BinaryOperator::getOpcodeStr(Opcode Op) { 2405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Op) { 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: assert(0 && "Unknown binary operator"); 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Mul: return "*"; 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Div: return "/"; 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Rem: return "%"; 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Add: return "+"; 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Sub: return "-"; 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Shl: return "<<"; 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Shr: return ">>"; 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LT: return "<"; 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case GT: return ">"; 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LE: return "<="; 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case GE: return ">="; 2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case EQ: return "=="; 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case NE: return "!="; 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case And: return "&"; 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Xor: return "^"; 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Or: return "|"; 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LAnd: return "&&"; 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LOr: return "||"; 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Assign: return "="; 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case MulAssign: return "*="; 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DivAssign: return "/="; 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case RemAssign: return "%="; 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case AddAssign: return "+="; 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case SubAssign: return "-="; 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ShlAssign: return "<<="; 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ShrAssign: return ">>="; 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case AndAssign: return "&="; 2695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case XorAssign: return "^="; 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case OrAssign: return "|="; 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Comma: return ","; 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 27566b5a8a39088598c01a9fa6f032dc908612dc8ecAnders CarlssonInitListExpr::InitListExpr(SourceLocation lbraceloc, 27666b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson Expr **initexprs, unsigned numinits, 27766b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson SourceLocation rbraceloc) 278c5ae899b4bbf65488445316c63168079177db0edSteve Naroff : Expr(InitListExprClass, QualType()), 279c5ae899b4bbf65488445316c63168079177db0edSteve Naroff LBraceLoc(lbraceloc), RBraceLoc(rbraceloc) 28066b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson{ 28166b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson for (unsigned i = 0; i != numinits; i++) 282c5ae899b4bbf65488445316c63168079177db0edSteve Naroff InitExprs.push_back(initexprs[i]); 28366b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson} 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 285bfdcae678d44906293e21c0cddc6537f3ee8b5a4Steve Naroff/// getFunctionType - Return the underlying function type for this block. 2864eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff/// 2874eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroffconst FunctionType *BlockExpr::getFunctionType() const { 2884eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff return getType()->getAsBlockPointerType()-> 2894eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff getPointeeType()->getAsFunctionType(); 2904eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff} 2914eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Generic Expression Routines 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// hasLocalSideEffect - Return true if this immediate expression has side 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// effects, not counting any sub-expressions. 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Expr::hasLocalSideEffect() const { 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (getStmtClass()) { 3005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ParenExprClass: 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return cast<ParenExpr>(this)->getSubExpr()->hasLocalSideEffect(); 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperatorClass: { 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const UnaryOperator *UO = cast<UnaryOperator>(this); 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (UO->getOpcode()) { 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: return false; 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::PostInc: 3105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::PostDec: 3115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::PreInc: 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::PreDec: 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; // ++/-- 3145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Deref: 3165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Dereferencing a volatile pointer is a side-effect. 3175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return getType().isVolatileQualified(); 3185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Real: 3195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Imag: 3205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // accessing a piece of a volatile complex is a side-effect. 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return UO->getSubExpr()->getType().isVolatileQualified(); 3225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Extension: 3245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return UO->getSubExpr()->hasLocalSideEffect(); 3255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 327e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner case BinaryOperatorClass: { 328e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner const BinaryOperator *BinOp = cast<BinaryOperator>(this); 329e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner // Consider comma to have side effects if the LHS and RHS both do. 330e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner if (BinOp->getOpcode() == BinaryOperator::Comma) 331e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner return BinOp->getLHS()->hasLocalSideEffect() && 332e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner BinOp->getRHS()->hasLocalSideEffect(); 333e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner 334e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner return BinOp->isAssignmentOp(); 335e7716e6133e23e4a89248a65a388bc840d8c130cChris Lattner } 336eb14fe839ec24c2ca14e5f094be147a34e3d3339Chris Lattner case CompoundAssignOperatorClass: 3371f683e9cf2e855b32d3fb4b142aa121cd3cf1088Chris Lattner return true; 3385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 339ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian case ConditionalOperatorClass: { 340ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian const ConditionalOperator *Exp = cast<ConditionalOperator>(this); 341ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian return Exp->getCond()->hasLocalSideEffect() 342ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian || (Exp->getLHS() && Exp->getLHS()->hasLocalSideEffect()) 343ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian || (Exp->getRHS() && Exp->getRHS()->hasLocalSideEffect()); 344ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian } 345ab38e4b50268633f037a10841fdfb612513f8d33Fariborz Jahanian 3465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case MemberExprClass: 3475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ArraySubscriptExprClass: 3485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the base pointer or element is to a volatile pointer/field, accessing 3495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // if is a side effect. 3505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return getType().isVolatileQualified(); 351211f6adf1301a1461015fb6cb08a05f0a35b65f3Eli Friedman 3525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case CallExprClass: 3535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: check attributes for pure/const. "void foo() { strlen("bar"); }" 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // should warn. 3555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 356a9c01021724b9b546d282b8609cbe559734812ecChris Lattner case ObjCMessageExprClass: 357a9c01021724b9b546d282b8609cbe559734812ecChris Lattner return true; 358611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner case StmtExprClass: { 359611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // Statement exprs don't logically have side effects themselves, but are 360611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // sometimes used in macros in ways that give them a type that is unused. 361611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // For example ({ blah; foo(); }) will end up with a type if foo has a type. 362611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // however, if the result of the stmt expr is dead, we don't want to emit a 363611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner // warning. 364611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner const CompoundStmt *CS = cast<StmtExpr>(this)->getSubStmt(); 365611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner if (!CS->body_empty()) 366611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner if (const Expr *E = dyn_cast<Expr>(CS->body_back())) 367611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner return E->hasLocalSideEffect(); 368611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner return false; 369611b2eccaf3869f32de51ecc02985426d1c0aaefChris Lattner } 3700835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis case ExplicitCastExprClass: 371987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis case CXXFunctionalCastExprClass: 3725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is a cast to void, check the operand. Otherwise, the result of 3735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the cast is unused. 3745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (getType()->isVoidType()) 3755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return cast<CastExpr>(this)->getSubExpr()->hasLocalSideEffect(); 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 37704421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 3784be1f47de20525ad90f02ba8682a7e2cbd3205d1Eli Friedman case ImplicitCastExprClass: 3794be1f47de20525ad90f02ba8682a7e2cbd3205d1Eli Friedman // Check the operand, since implicit casts are inserted by Sema 3804be1f47de20525ad90f02ba8682a7e2cbd3205d1Eli Friedman return cast<ImplicitCastExpr>(this)->getSubExpr()->hasLocalSideEffect(); 3814be1f47de20525ad90f02ba8682a7e2cbd3205d1Eli Friedman 38204421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner case CXXDefaultArgExprClass: 38304421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return cast<CXXDefaultArgExpr>(this)->getExpr()->hasLocalSideEffect(); 3845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// isLvalue - C99 6.3.2.1: an lvalue is an expression with an object type or an 3885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// incomplete type other than void. Nonarray expressions that can be lvalues: 3895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - name, where name must be a variable 3905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - e[i] 3915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - (e), where e must be an lvalue 3925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - e.name, where e must be an lvalue 3935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - e->name 3945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - *e, the type of e cannot be a function type 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// - string-constant 3967da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner/// - (__real__ e) and (__imag__ e) where e is an lvalue [GNU extension] 39708ad47cbd1f81fcb31dbc731c13b885a07e12704Bill Wendling/// - reference type [C++ [expr]] 3985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 39928be73f74c9e241a23ea24fe5756623de6bf1084Chris LattnerExpr::isLvalueResult Expr::isLvalue(ASTContext &Ctx) const { 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // first, check the type (C99 6.3.2.1) 401cb4f9a6d0be445d84af35ba81323be6127816f9eChris Lattner if (TR->isFunctionType()) // from isObjectType() 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return LV_NotObjectType; 4035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 404acb818a4f7d9b608826171094d6b5a555a8fe694Steve Naroff // Allow qualified void which is an incomplete type other than void (yuck). 40528be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner if (TR->isVoidType() && !Ctx.getCanonicalType(TR).getCVRQualifiers()) 406acb818a4f7d9b608826171094d6b5a555a8fe694Steve Naroff return LV_IncompleteVoidType; 407acb818a4f7d9b608826171094d6b5a555a8fe694Steve Naroff 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; 4204111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner case DeclRefExprClass: { // C99 6.5.1p2 4214111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner const Decl *RefdDecl = cast<DeclRefExpr>(this)->getDecl(); 4224111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner if (isa<VarDecl>(RefdDecl) || isa<ImplicitParamDecl>(RefdDecl)) 4235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return LV_Valid; 4245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 4254111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner } 426dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff case BlockDeclRefExprClass: { 427dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff const BlockDeclRefExpr *BDR = cast<BlockDeclRefExpr>(this); 4284f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff if (isa<VarDecl>(BDR->getDecl())) 429dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff return LV_Valid; 430dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff break; 431dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve Naroff } 432fdd75663fffeb2058a7847975e50837e61200593Anton Korobeynikov case MemberExprClass: { // C99 6.5.2.3p4 4335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const MemberExpr *m = cast<MemberExpr>(this); 43428be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner return m->isArrow() ? LV_Valid : m->getBase()->isLvalue(Ctx); 435fdd75663fffeb2058a7847975e50837e61200593Anton Korobeynikov } 4367da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner case UnaryOperatorClass: 4375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Deref) 4387da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner return LV_Valid; // C99 6.5.3p4 4397da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner 4407da36f642e907ff5a5ba4b18b5bfebfabf36ecc7Chris Lattner if (cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Real || 441baf0d6678418e0dd9309438c3e50274253cfc7b2Chris Lattner cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Imag || 442baf0d6678418e0dd9309438c3e50274253cfc7b2Chris Lattner cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Extension) 44328be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner return cast<UnaryOperator>(this)->getSubExpr()->isLvalue(Ctx); // GNU. 4445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 4455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ParenExprClass: // C99 6.5.1p5 44628be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner return cast<ParenExpr>(this)->getSubExpr()->isLvalue(Ctx); 447e6386394677ed4f77b20e2e3d5446a3a2f628e53Steve Naroff case CompoundLiteralExprClass: // C99 6.5.2.5p5 448e6386394677ed4f77b20e2e3d5446a3a2f628e53Steve Naroff return LV_Valid; 449213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman case ExtVectorElementExprClass: 450213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman if (cast<ExtVectorElementExpr>(this)->containsDuplicateElements()) 451fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff return LV_DuplicateVectorComponents; 452fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff return LV_Valid; 453027282d1c1ac151aa7b1b3b45babc918b8ad456aSteve Naroff case ObjCIvarRefExprClass: // ObjC instance variables are lvalues. 454027282d1c1ac151aa7b1b3b45babc918b8ad456aSteve Naroff return LV_Valid; 455799a6a6850af625946bb8d88ca960bb6604e3858Steve Naroff case ObjCPropertyRefExprClass: // FIXME: check if read-only property. 456799a6a6850af625946bb8d88ca960bb6604e3858Steve Naroff return LV_Valid; 457d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner case PredefinedExprClass: 458d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner return (cast<PredefinedExpr>(this)->getIdentType() 459d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner == PredefinedExpr::CXXThis 4607c4a191d8be7eac565a64369de072b2a52bf6749Chris Lattner ? LV_InvalidExpression : LV_Valid); 46104421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner case CXXDefaultArgExprClass: 46228be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner return cast<CXXDefaultArgExpr>(this)->getExpr()->isLvalue(Ctx); 46324b41fa8239c63b9eb570d3e83c4a82840656a65Argyrios Kyrtzidis case CXXConditionDeclExprClass: 46424b41fa8239c63b9eb570d3e83c4a82840656a65Argyrios Kyrtzidis return LV_Valid; 4655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 4665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 4675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return LV_InvalidExpression; 4695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// isModifiableLvalue - C99 6.3.2.1: an lvalue that does not have array type, 4725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// does not have an incomplete type, does not have a const-qualified type, and 4735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// if it is a structure or union, does not have any member (including, 4745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// recursively, any member or element of all contained aggregates or unions) 4755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// with a const-qualified type. 47628be73f74c9e241a23ea24fe5756623de6bf1084Chris LattnerExpr::isModifiableLvalueResult Expr::isModifiableLvalue(ASTContext &Ctx) const { 47728be73f74c9e241a23ea24fe5756623de6bf1084Chris Lattner isLvalueResult lvalResult = isLvalue(Ctx); 4785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (lvalResult) { 4805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LV_Valid: break; 4815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LV_NotObjectType: return MLV_NotObjectType; 4825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LV_IncompleteVoidType: return MLV_IncompleteVoidType; 483fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff case LV_DuplicateVectorComponents: return MLV_DuplicateVectorComponents; 4845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case LV_InvalidExpression: return MLV_InvalidExpression; 4855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 486c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner 487c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner QualType CT = Ctx.getCanonicalType(getType()); 488c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner 489c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (CT.isConstQualified()) 4905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_ConstQualified; 491c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (CT->isArrayType()) 4925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_ArrayType; 493c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (CT->isIncompleteType()) 4945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_IncompleteType; 4955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 496c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const RecordType *r = CT->getAsRecordType()) { 4975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (r->hasConstFields()) 4985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_ConstQualified; 4995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5004f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff // The following is illegal: 5014f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff // void takeclosure(void (^C)(void)); 5024f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff // void func() { int x = 1; takeclosure(^{ x = 7 }); } 5034f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff // 5044f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff if (getStmtClass() == BlockDeclRefExprClass) { 5054f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff const BlockDeclRefExpr *BDR = cast<BlockDeclRefExpr>(this); 5064f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff if (!BDR->isByRef() && isa<VarDecl>(BDR->getDecl())) 5074f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff return MLV_NotBlockQualified; 5084f6a7d7ead09b439216c32f2de806a998aeb222aSteve Naroff } 5095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return MLV_Valid; 5105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 5115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5122e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek/// hasGlobalStorage - Return true if this expression has static storage 5134cc627111453b75519d5130b57e06256da7b00e8Chris Lattner/// duration. This means that the address of this expression is a link-time 5144cc627111453b75519d5130b57e06256da7b00e8Chris Lattner/// constant. 5152e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenekbool Expr::hasGlobalStorage() const { 5161d09ecca892185ba067e47ba879f424de59950efChris Lattner switch (getStmtClass()) { 5171d09ecca892185ba067e47ba879f424de59950efChris Lattner default: 5181d09ecca892185ba067e47ba879f424de59950efChris Lattner return false; 5194cc627111453b75519d5130b57e06256da7b00e8Chris Lattner case ParenExprClass: 5202e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return cast<ParenExpr>(this)->getSubExpr()->hasGlobalStorage(); 5214cc627111453b75519d5130b57e06256da7b00e8Chris Lattner case ImplicitCastExprClass: 5222e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return cast<ImplicitCastExpr>(this)->getSubExpr()->hasGlobalStorage(); 523e9b12198c4cc7f5687960100351b4af006c14469Steve Naroff case CompoundLiteralExprClass: 524e9b12198c4cc7f5687960100351b4af006c14469Steve Naroff return cast<CompoundLiteralExpr>(this)->isFileScope(); 5251d09ecca892185ba067e47ba879f424de59950efChris Lattner case DeclRefExprClass: { 5261d09ecca892185ba067e47ba879f424de59950efChris Lattner const Decl *D = cast<DeclRefExpr>(this)->getDecl(); 5271d09ecca892185ba067e47ba879f424de59950efChris Lattner if (const VarDecl *VD = dyn_cast<VarDecl>(D)) 5282e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return VD->hasGlobalStorage(); 52963f067f5a75ae97b53dc7a6a6530e2c72c8bb7f8Seo Sanghyeon if (isa<FunctionDecl>(D)) 53063f067f5a75ae97b53dc7a6a6530e2c72c8bb7f8Seo Sanghyeon return true; 5311d09ecca892185ba067e47ba879f424de59950efChris Lattner return false; 5321d09ecca892185ba067e47ba879f424de59950efChris Lattner } 533fb7080663a0f0abd687a6f58ac917d9a76318b73Chris Lattner case MemberExprClass: { 5341d09ecca892185ba067e47ba879f424de59950efChris Lattner const MemberExpr *M = cast<MemberExpr>(this); 5352e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return !M->isArrow() && M->getBase()->hasGlobalStorage(); 536fb7080663a0f0abd687a6f58ac917d9a76318b73Chris Lattner } 5374cc627111453b75519d5130b57e06256da7b00e8Chris Lattner case ArraySubscriptExprClass: 5382e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek return cast<ArraySubscriptExpr>(this)->getBase()->hasGlobalStorage(); 539d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner case PredefinedExprClass: 540fa28b30d5a1e93e5263be33e343532b900d2c643Chris Lattner return true; 54104421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner case CXXDefaultArgExprClass: 54204421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return cast<CXXDefaultArgExpr>(this)->getExpr()->hasGlobalStorage(); 5431d09ecca892185ba067e47ba879f424de59950efChris Lattner } 5441d09ecca892185ba067e47ba879f424de59950efChris Lattner} 5451d09ecca892185ba067e47ba879f424de59950efChris Lattner 5464e99a5fc3b203397a91136c6e695e405fb8fc606Ted KremenekExpr* Expr::IgnoreParens() { 5474e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek Expr* E = this; 5484e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek while (ParenExpr* P = dyn_cast<ParenExpr>(E)) 5494e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek E = P->getSubExpr(); 5504e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek 5514e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek return E; 5524e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek} 5534e99a5fc3b203397a91136c6e695e405fb8fc606Ted Kremenek 55456f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner/// IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr 55556f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner/// or CastExprs or ImplicitCastExprs, returning their operand. 55656f349400c5932a196509c0480ff6f99a9a0b48fChris LattnerExpr *Expr::IgnoreParenCasts() { 55756f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner Expr *E = this; 55856f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner while (true) { 55956f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner if (ParenExpr *P = dyn_cast<ParenExpr>(E)) 56056f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner E = P->getSubExpr(); 56156f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner else if (CastExpr *P = dyn_cast<CastExpr>(E)) 56256f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner E = P->getSubExpr(); 56356f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner else 56456f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner return E; 56556f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner } 56656f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner} 56756f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner 56856f349400c5932a196509c0480ff6f99a9a0b48fChris Lattner 56938374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroffbool Expr::isConstantExpr(ASTContext &Ctx, SourceLocation *Loc) const { 57038374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff switch (getStmtClass()) { 57138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff default: 57238374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff if (Loc) *Loc = getLocStart(); 57338374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 57438374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case ParenExprClass: 57538374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return cast<ParenExpr>(this)->getSubExpr()->isConstantExpr(Ctx, Loc); 57638374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case StringLiteralClass: 5775d37e32a5bfefacdd7b4d0664199d72c703d489dSteve Naroff case ObjCStringLiteralClass: 57838374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case FloatingLiteralClass: 57938374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case IntegerLiteralClass: 58038374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case CharacterLiteralClass: 58138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case ImaginaryLiteralClass: 5821a86b33c1870fee08d281c9f07ac1280195a7faeAnders Carlsson case TypesCompatibleExprClass: 5831a86b33c1870fee08d281c9f07ac1280195a7faeAnders Carlsson case CXXBoolLiteralExprClass: 58415425f9d2d92e2a5f99b09b8e2fc00025631e593Anders Carlsson case AddrLabelExprClass: 5852777e494c96bee69141a10a0174d5da16e7b927bChris Lattner return true; 58638374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case CallExprClass: { 58738374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff const CallExpr *CE = cast<CallExpr>(this); 588c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff if (CE->isBuiltinConstantExpr()) 589c4f8e8b645b8e0e685c089dde0674c6f29a24168Steve Naroff return true; 59038374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff if (Loc) *Loc = getLocStart(); 59138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 59238374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff } 5934ef8dd6e8736097bf9e3c387139c668565d89dcaChris Lattner case DeclRefExprClass: { 5944ef8dd6e8736097bf9e3c387139c668565d89dcaChris Lattner const Decl *D = cast<DeclRefExpr>(this)->getDecl(); 5954ef8dd6e8736097bf9e3c387139c668565d89dcaChris Lattner // Accept address of function. 5964ef8dd6e8736097bf9e3c387139c668565d89dcaChris Lattner if (isa<EnumConstantDecl>(D) || isa<FunctionDecl>(D)) 5972777e494c96bee69141a10a0174d5da16e7b927bChris Lattner return true; 59838374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff if (Loc) *Loc = getLocStart(); 5991d09ecca892185ba067e47ba879f424de59950efChris Lattner if (isa<VarDecl>(D)) 6001d09ecca892185ba067e47ba879f424de59950efChris Lattner return TR->isArrayType(); 60138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 6024ef8dd6e8736097bf9e3c387139c668565d89dcaChris Lattner } 603b8f13a8baff3df080fe024fec47746e9a79fe649Steve Naroff case CompoundLiteralExprClass: 604b8f13a8baff3df080fe024fec47746e9a79fe649Steve Naroff if (Loc) *Loc = getLocStart(); 605b8f13a8baff3df080fe024fec47746e9a79fe649Steve Naroff // Allow "(int []){2,4}", since the array will be converted to a pointer. 606d47d4f518e43eaa716e2d18359bd725a03b87f58Nate Begeman // Allow "(vector type){2,4}" since the elements are all constant. 607d47d4f518e43eaa716e2d18359bd725a03b87f58Nate Begeman return TR->isArrayType() || TR->isVectorType(); 60838374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case UnaryOperatorClass: { 60938374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff const UnaryOperator *Exp = cast<UnaryOperator>(this); 61038374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff 6111d09ecca892185ba067e47ba879f424de59950efChris Lattner // C99 6.6p9 612239c15e5b07a6cc84278ede87edf638922767520Chris Lattner if (Exp->getOpcode() == UnaryOperator::AddrOf) { 6132e5f54aa1dd15a62c34a9d1d24a5a0692f43934aTed Kremenek if (!Exp->getSubExpr()->hasGlobalStorage()) { 614239c15e5b07a6cc84278ede87edf638922767520Chris Lattner if (Loc) *Loc = getLocStart(); 615239c15e5b07a6cc84278ede87edf638922767520Chris Lattner return false; 616239c15e5b07a6cc84278ede87edf638922767520Chris Lattner } 617239c15e5b07a6cc84278ede87edf638922767520Chris Lattner return true; 618239c15e5b07a6cc84278ede87edf638922767520Chris Lattner } 6191d09ecca892185ba067e47ba879f424de59950efChris Lattner 62038374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff // Get the operand value. If this is sizeof/alignof, do not evalute the 62138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff // operand. This affects C99 6.6p3. 622d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff if (!Exp->isSizeOfAlignOfOp() && 623d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff Exp->getOpcode() != UnaryOperator::OffsetOf && 62438374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff !Exp->getSubExpr()->isConstantExpr(Ctx, Loc)) 62538374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 62638374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff 62738374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff switch (Exp->getOpcode()) { 62838374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff // Address, indirect, pre/post inc/dec, etc are not valid constant exprs. 62938374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff // See C99 6.6p3. 63038374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff default: 63138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff if (Loc) *Loc = Exp->getOperatorLoc(); 63238374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 63338374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case UnaryOperator::Extension: 63438374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return true; // FIXME: this is wrong. 63538374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case UnaryOperator::SizeOf: 63638374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case UnaryOperator::AlignOf: 637d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff case UnaryOperator::OffsetOf: 63838374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff // sizeof(vla) is not a constantexpr: C99 6.5.3.4p2. 6393c2b3170041f69a92904e3bab9b6d654eaf260acEli Friedman if (!Exp->getSubExpr()->getType()->isConstantSizeType()) { 64065383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner if (Loc) *Loc = Exp->getOperatorLoc(); 64138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 64265383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner } 6432777e494c96bee69141a10a0174d5da16e7b927bChris Lattner return true; 64438374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case UnaryOperator::LNot: 64538374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case UnaryOperator::Plus: 64638374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case UnaryOperator::Minus: 64738374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case UnaryOperator::Not: 6482777e494c96bee69141a10a0174d5da16e7b927bChris Lattner return true; 64938374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff } 65038374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff } 65138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case SizeOfAlignOfTypeExprClass: { 65238374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff const SizeOfAlignOfTypeExpr *Exp = cast<SizeOfAlignOfTypeExpr>(this); 65338374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff // alignof always evaluates to a constant. 654a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner if (Exp->isSizeOf() && !Exp->getArgumentType()->isVoidType() && 655a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner !Exp->getArgumentType()->isConstantSizeType()) { 65665383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner if (Loc) *Loc = Exp->getOperatorLoc(); 65738374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 65865383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner } 6592777e494c96bee69141a10a0174d5da16e7b927bChris Lattner return true; 66038374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff } 66138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case BinaryOperatorClass: { 66238374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff const BinaryOperator *Exp = cast<BinaryOperator>(this); 66338374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff 66438374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff // The LHS of a constant expr is always evaluated and needed. 66538374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff if (!Exp->getLHS()->isConstantExpr(Ctx, Loc)) 66638374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 66738374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff 66838374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff if (!Exp->getRHS()->isConstantExpr(Ctx, Loc)) 66938374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 6702777e494c96bee69141a10a0174d5da16e7b927bChris Lattner return true; 67138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff } 67238374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case ImplicitCastExprClass: 673987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis case ExplicitCastExprClass: 674987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis case CXXFunctionalCastExprClass: { 6750835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis const Expr *SubExpr = cast<CastExpr>(this)->getSubExpr(); 6760835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis SourceLocation CastLoc = getLocStart(); 67738374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff if (!SubExpr->isConstantExpr(Ctx, Loc)) { 67838374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff if (Loc) *Loc = SubExpr->getLocStart(); 67938374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 68038374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff } 6812777e494c96bee69141a10a0174d5da16e7b927bChris Lattner return true; 68238374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff } 68338374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff case ConditionalOperatorClass: { 68438374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff const ConditionalOperator *Exp = cast<ConditionalOperator>(this); 6852777e494c96bee69141a10a0174d5da16e7b927bChris Lattner if (!Exp->getCond()->isConstantExpr(Ctx, Loc) || 6863907323dd6665c0c4e383435cb145233f4533406Anders Carlsson // Handle the GNU extension for missing LHS. 6873907323dd6665c0c4e383435cb145233f4533406Anders Carlsson !(Exp->getLHS() && Exp->getLHS()->isConstantExpr(Ctx, Loc)) || 6882777e494c96bee69141a10a0174d5da16e7b927bChris Lattner !Exp->getRHS()->isConstantExpr(Ctx, Loc)) 68938374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff return false; 6902777e494c96bee69141a10a0174d5da16e7b927bChris Lattner return true; 69138374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff } 692d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff case InitListExprClass: { 693d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff const InitListExpr *Exp = cast<InitListExpr>(this); 694d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff unsigned numInits = Exp->getNumInits(); 695d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff for (unsigned i = 0; i < numInits; i++) { 696d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff if (!Exp->getInit(i)->isConstantExpr(Ctx, Loc)) { 697d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff if (Loc) *Loc = Exp->getInit(i)->getLocStart(); 698d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff return false; 699d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff } 700d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff } 701d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff return true; 702d0091aa3850a8c8be94c68710ed4ef1317729ba0Steve Naroff } 70304421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner case CXXDefaultArgExprClass: 70404421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return cast<CXXDefaultArgExpr>(this)->getExpr()->isConstantExpr(Ctx, Loc); 70538374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff } 70638374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff} 70738374b05791ee93300b9fbe8ceb3957f54184b37Steve Naroff 7085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// isIntegerConstantExpr - this recursive routine will test if an expression is 7095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// an integer constant expression. Note: With the introduction of VLA's in 7105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// C99 the result of the sizeof operator is no longer always a constant 7115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// expression. The generalization of the wording to include any subexpression 7125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that is not evaluated (C99 6.6p3) means that nonconstant subexpressions 7135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// can appear as operands to other operators (e.g. &&, ||, ?:). For instance, 7145f6b632391e24b08ead3e62ba2e2765e770382edNuno Lopes/// "0 || f()" can be treated as a constant expression. In C90 this expression, 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// occurring in a context requiring a constant, would have been a constraint 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// violation. FIXME: This routine currently implements C90 semantics. 7175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// To properly implement C99 semantics this routine will need to evaluate 7185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// expressions involving operators previously mentioned. 7195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// FIXME: Pass up a reason why! Invalid operation in i-c-e, division by zero, 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// comma, etc 7225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 7235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// FIXME: This should ext-warn on overflow during evaluation! ISO C does not 724ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner/// permit this. This includes things like (int)1e1000 725ce0afc0b09accbf7370b2ba87574b2c4be7fb032Chris Lattner/// 726ce0afc0b09accbf7370b2ba87574b2c4be7fb032Chris Lattner/// FIXME: Handle offsetof. Two things to do: Handle GCC's __builtin_offsetof 727ce0afc0b09accbf7370b2ba87574b2c4be7fb032Chris Lattner/// to support gcc 4.0+ and handle the idiom GCC recognizes with a null pointer 728ce0afc0b09accbf7370b2ba87574b2c4be7fb032Chris Lattner/// cast+dereference. 729590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattnerbool Expr::isIntegerConstantExpr(llvm::APSInt &Result, ASTContext &Ctx, 730590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner SourceLocation *Loc, bool isEvaluated) const { 7315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (getStmtClass()) { 7325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 7335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 7345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 7355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ParenExprClass: 7365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return cast<ParenExpr>(this)->getSubExpr()-> 737590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated); 7385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case IntegerLiteralClass: 7395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = cast<IntegerLiteral>(this)->getValue(); 7405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 7412eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner case CharacterLiteralClass: { 7422eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner const CharacterLiteral *CL = cast<CharacterLiteral>(this); 74398be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 7442eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner Result = CL->getValue(); 745f0fbcb356bc4eb5f6467dc4fc4bc447e9a630102Chris Lattner Result.setIsUnsigned(!getType()->isSignedIntegerType()); 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 7472eadfb638eb1bb6ccfd6fd0453e764d47e27eed9Chris Lattner } 748b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson case CXXBoolLiteralExprClass: { 749b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson const CXXBoolLiteralExpr *BL = cast<CXXBoolLiteralExpr>(this); 750b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 751b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson Result = BL->getValue(); 752b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson Result.setIsUnsigned(!getType()->isSignedIntegerType()); 753b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson break; 754b88d45ea7eb835d36c4a4b3ea84b1260b120dd0aAnders Carlsson } 7557267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis case CXXZeroInitValueExprClass: 7567267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis Result.clear(); 7577267f7832e5f0c7f951765e201c5a2650eb1637bArgyrios Kyrtzidis break; 7587b658aa315784fa489a32daeacfe400512ce468dSteve Naroff case TypesCompatibleExprClass: { 7597b658aa315784fa489a32daeacfe400512ce468dSteve Naroff const TypesCompatibleExpr *TCE = cast<TypesCompatibleExpr>(this); 76098be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 761ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff Result = Ctx.typesAreCompatible(TCE->getArgType1(), TCE->getArgType2()); 762389cecc83f33e93c8ba6bf2e8269b8690404416fSteve Naroff break; 7637b658aa315784fa489a32daeacfe400512ce468dSteve Naroff } 76413b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff case CallExprClass: { 76513b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff const CallExpr *CE = cast<CallExpr>(this); 76698be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 76713b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff if (CE->isBuiltinClassifyType(Result)) 76813b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff break; 76913b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff if (Loc) *Loc = getLocStart(); 77013b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff return false; 77113b7c5ff42d6077a8d59e2c9ec9e7fedd0150ae6Steve Naroff } 7725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclRefExprClass: 7735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (const EnumConstantDecl *D = 7745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer dyn_cast<EnumConstantDecl>(cast<DeclRefExpr>(this)->getDecl())) { 7755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = D->getInitVal(); 7765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 7775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 7795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperatorClass: { 7815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const UnaryOperator *Exp = cast<UnaryOperator>(this); 7825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the operand value. If this is sizeof/alignof, do not evalute the 7845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // operand. This affects C99 6.6p3. 7855a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson if (!Exp->isSizeOfAlignOfOp() && !Exp->isOffsetOfOp() && 786602dafdea34b78c7bc1f4601f94062afa4139e76Chris Lattner !Exp->getSubExpr()->isIntegerConstantExpr(Result, Ctx, Loc,isEvaluated)) 7875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 7885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Exp->getOpcode()) { 7905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Address, indirect, pre/post inc/dec, etc are not valid constant exprs. 7915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // See C99 6.6p3. 7925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 7935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = Exp->getOperatorLoc(); 7945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 7955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Extension: 79676e773a443be9f006610f46529e07d4c8d857680Chris Lattner return true; // FIXME: this is wrong. 7975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::SizeOf: 7985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::AlignOf: 799a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner // Return the result in the right width. 80098be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 801a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 802a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner // sizeof(void) and __alignof__(void) = 1 as a gcc extension. 803a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner if (Exp->getSubExpr()->getType()->isVoidType()) { 804a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner Result = 1; 805a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner break; 806a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner } 807a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 8085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // sizeof(vla) is not a constantexpr: C99 6.5.3.4p2. 8093c2b3170041f69a92904e3bab9b6d654eaf260acEli Friedman if (!Exp->getSubExpr()->getType()->isConstantSizeType()) { 81065383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner if (Loc) *Loc = Exp->getOperatorLoc(); 8115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 81265383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner } 8135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 81476e773a443be9f006610f46529e07d4c8d857680Chris Lattner // Get information about the size or align. 815efdd1574e3cca00ef0410aee8b7ee36eda5a2f71Chris Lattner if (Exp->getSubExpr()->getType()->isFunctionType()) { 816efdd1574e3cca00ef0410aee8b7ee36eda5a2f71Chris Lattner // GCC extension: sizeof(function) = 1. 817efdd1574e3cca00ef0410aee8b7ee36eda5a2f71Chris Lattner Result = Exp->getOpcode() == UnaryOperator::AlignOf ? 4 : 1; 818da5a6b6d9fd52899499d5b7b46273ec844dcaa6eChris Lattner } else { 81998be4943e8dc4f3905629a7102668960873cf863Chris Lattner unsigned CharSize = Ctx.Target.getCharWidth(); 82064a31ef8d46fcdf2bca38098e3206a45052b515dAnders Carlsson if (Exp->getOpcode() == UnaryOperator::AlignOf) 82198be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result = Ctx.getTypeAlign(Exp->getSubExpr()->getType()) / CharSize; 82264a31ef8d46fcdf2bca38098e3206a45052b515dAnders Carlsson else 82398be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result = Ctx.getTypeSize(Exp->getSubExpr()->getType()) / CharSize; 824da5a6b6d9fd52899499d5b7b46273ec844dcaa6eChris Lattner } 8255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::LNot: { 827bf7553889594886213e05cd3f94a6d6f7747bf7bChris Lattner bool Val = Result == 0; 82898be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 8295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = Val; 8305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Plus: 8335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Minus: 8355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = -Result; 8365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case UnaryOperator::Not: 8385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = ~Result; 8395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8405a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson case UnaryOperator::OffsetOf: 841aa1f9f1d50adf294674b74510b62e863b68572bcDaniel Dunbar Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 8425a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson Result = Exp->evaluateOffsetOf(Ctx); 8435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case SizeOfAlignOfTypeExprClass: { 8475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const SizeOfAlignOfTypeExpr *Exp = cast<SizeOfAlignOfTypeExpr>(this); 848a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 849a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner // Return the result in the right width. 85098be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType()))); 851a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 852a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner // sizeof(void) and __alignof__(void) = 1 as a gcc extension. 853a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner if (Exp->getArgumentType()->isVoidType()) { 854a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner Result = 1; 855a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner break; 856a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner } 857a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner 858a269ebfd91c4fa47e051fa1fa904833a022fe025Chris Lattner // alignof always evaluates to a constant, sizeof does if arg is not VLA. 8593c2b3170041f69a92904e3bab9b6d654eaf260acEli Friedman if (Exp->isSizeOf() && !Exp->getArgumentType()->isConstantSizeType()) { 86065383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner if (Loc) *Loc = Exp->getOperatorLoc(); 8615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 86265383479cb2caf0f136f58fecdbdbaf9c497b7a1Chris Lattner } 8635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 86476e773a443be9f006610f46529e07d4c8d857680Chris Lattner // Get information about the size or align. 865efdd1574e3cca00ef0410aee8b7ee36eda5a2f71Chris Lattner if (Exp->getArgumentType()->isFunctionType()) { 866efdd1574e3cca00ef0410aee8b7ee36eda5a2f71Chris Lattner // GCC extension: sizeof(function) = 1. 867efdd1574e3cca00ef0410aee8b7ee36eda5a2f71Chris Lattner Result = Exp->isSizeOf() ? 1 : 4; 8686a24acbb3dbb3bea9426716bee6ad6023ad15f3fAnders Carlsson } else { 86998be4943e8dc4f3905629a7102668960873cf863Chris Lattner unsigned CharSize = Ctx.Target.getCharWidth(); 8706a24acbb3dbb3bea9426716bee6ad6023ad15f3fAnders Carlsson if (Exp->isSizeOf()) 87198be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result = Ctx.getTypeSize(Exp->getArgumentType()) / CharSize; 8726a24acbb3dbb3bea9426716bee6ad6023ad15f3fAnders Carlsson else 87398be4943e8dc4f3905629a7102668960873cf863Chris Lattner Result = Ctx.getTypeAlign(Exp->getArgumentType()) / CharSize; 874060e470e53b73167114284eb0b8c3e25bb3dad99Ted Kremenek } 8755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 8765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperatorClass: { 8785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const BinaryOperator *Exp = cast<BinaryOperator>(this); 879e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar llvm::APSInt LHS, RHS; 880e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar 881e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar // Initialize result to have correct signedness and width. 882e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = llvm::APSInt(static_cast<uint32_t>(Ctx.getTypeSize(getType())), 883e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar !getType()->isSignedIntegerType()); 8845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The LHS of a constant expr is always evaluated and needed. 886e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar if (!Exp->getLHS()->isIntegerConstantExpr(LHS, Ctx, Loc, isEvaluated)) 8875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 8885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The short-circuiting &&/|| operators don't necessarily evaluate their 8905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // RHS. Make sure to pass isEvaluated down correctly. 8915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Exp->isLogicalOp()) { 8925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool RHSEval; 8935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Exp->getOpcode() == BinaryOperator::LAnd) 894e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar RHSEval = LHS != 0; 8955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else { 8965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Exp->getOpcode() == BinaryOperator::LOr &&"Unexpected logical"); 897e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar RHSEval = LHS == 0; 8985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 900590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner if (!Exp->getRHS()->isIntegerConstantExpr(RHS, Ctx, Loc, 9015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer isEvaluated & RHSEval)) 9025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 904590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner if (!Exp->getRHS()->isIntegerConstantExpr(RHS, Ctx, Loc, isEvaluated)) 9055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Exp->getOpcode()) { 9095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 9105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 9115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Mul: 913e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS * RHS; 9145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Div: 9165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (RHS == 0) { 9175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!isEvaluated) break; 9185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 9195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 921e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS / RHS; 9225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Rem: 9245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (RHS == 0) { 9255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!isEvaluated) break; 9265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 9275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 929e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS % RHS; 9305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 931e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::Add: Result = LHS + RHS; break; 932e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::Sub: Result = LHS - RHS; break; 9335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Shl: 934e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS << 935e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar static_cast<uint32_t>(RHS.getLimitedValue(LHS.getBitWidth()-1)); 936e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar break; 9375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Shr: 938e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS >> 939e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar static_cast<uint32_t>(RHS.getLimitedValue(LHS.getBitWidth()-1)); 9405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 941e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::LT: Result = LHS < RHS; break; 942e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::GT: Result = LHS > RHS; break; 943e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::LE: Result = LHS <= RHS; break; 944e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::GE: Result = LHS >= RHS; break; 945e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::EQ: Result = LHS == RHS; break; 946e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::NE: Result = LHS != RHS; break; 947e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::And: Result = LHS & RHS; break; 948e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::Xor: Result = LHS ^ RHS; break; 949e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar case BinaryOperator::Or: Result = LHS | RHS; break; 9505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::LAnd: 951e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS != 0 && RHS != 0; 9525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::LOr: 954e1226d24d23510e422160eb2413d9bb90de9b144Daniel Dunbar Result = LHS != 0 || RHS != 0; 9555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BinaryOperator::Comma: 9585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.6p3: "shall not contain assignment, ..., or comma operators, 9595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // *except* when they are contained within a subexpression that is not 9605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // evaluated". Note that Assignment can never happen due to constraints 9615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // on the LHS subexpr, so we don't need to check it here. 9625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isEvaluated) { 9635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Loc) *Loc = getLocStart(); 9645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The result of the constant expr is the RHS. 9685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result = RHS; 9695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 9705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(!Exp->isAssignmentOp() && "LHS can't be a constant expr!"); 9735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 9745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 97526dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner case ImplicitCastExprClass: 976987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis case ExplicitCastExprClass: 977987a14bf5883ef6e5d07f1c83eb6d41a8212a78cArgyrios Kyrtzidis case CXXFunctionalCastExprClass: { 9780835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis const Expr *SubExpr = cast<CastExpr>(this)->getSubExpr(); 9790835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis SourceLocation CastLoc = getLocStart(); 98026dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner 9815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.6p6: shall only convert arithmetic types to integer types. 98226dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner if (!SubExpr->getType()->isArithmeticType() || 98326dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner !getType()->isIntegerType()) { 98426dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner if (Loc) *Loc = SubExpr->getLocStart(); 9855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 9865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 987987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner 98898be4943e8dc4f3905629a7102668960873cf863Chris Lattner uint32_t DestWidth = static_cast<uint32_t>(Ctx.getTypeSize(getType())); 989987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner 9905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Handle simple integer->integer casts. 99126dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner if (SubExpr->getType()->isIntegerType()) { 99226dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner if (!SubExpr->isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated)) 9935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 99426dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner 99526dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner // Figure out if this is a truncate, extend or noop cast. 99626dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner // If the input is signed, do a sign extend, noop, or truncate. 997c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner if (getType()->isBooleanType()) { 998c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner // Conversion to bool compares against zero. 999c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner Result = Result != 0; 1000c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner Result.zextOrTrunc(DestWidth); 1001c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner } else if (SubExpr->getType()->isSignedIntegerType()) 100226dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner Result.sextOrTrunc(DestWidth); 100326dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner else // If the input is unsigned, do a zero extend, noop, or truncate. 100426dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner Result.zextOrTrunc(DestWidth); 10055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 10065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Allow floating constants that are the immediate operands of casts or that 10095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // are parenthesized. 101026dc7b39267b7d29b35a7887a5b8e54697192192Chris Lattner const Expr *Operand = SubExpr; 10115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (const ParenExpr *PE = dyn_cast<ParenExpr>(Operand)) 10125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Operand = PE->getSubExpr(); 1013987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner 1014987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner // If this isn't a floating literal, we can't handle it. 1015987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner const FloatingLiteral *FL = dyn_cast<FloatingLiteral>(Operand); 1016987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner if (!FL) { 1017987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner if (Loc) *Loc = Operand->getLocStart(); 1018987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner return false; 1019987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner } 1020c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner 1021c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner // If the destination is boolean, compare against zero. 1022c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner if (getType()->isBooleanType()) { 1023c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner Result = !FL->getValue().isZero(); 1024c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner Result.zextOrTrunc(DestWidth); 1025c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner break; 1026c0a356b4fa35bf3f7d6031c229c071eef1a8f7a9Chris Lattner } 10275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1028987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner // Determine whether we are converting to unsigned or signed. 1029987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner bool DestSigned = getType()->isSignedIntegerType(); 1030ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner 1031ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner // TODO: Warn on overflow, but probably not here: isIntegerConstantExpr can 1032ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner // be called multiple times per AST. 1033987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner uint64_t Space[4]; 1034ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner (void)FL->getValue().convertToInteger(Space, DestWidth, DestSigned, 1035ccc213f5d4034bb6fcda14cad112d9029a508b66Chris Lattner llvm::APFloat::rmTowardZero); 1036987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner Result = llvm::APInt(DestWidth, 4, Space); 1037987b15db39745cd7fb2e634ba1a4b85469ac9131Chris Lattner break; 10385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case ConditionalOperatorClass: { 10405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const ConditionalOperator *Exp = cast<ConditionalOperator>(this); 10415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1042590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattner if (!Exp->getCond()->isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated)) 10435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 10445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const Expr *TrueExp = Exp->getLHS(); 10465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const Expr *FalseExp = Exp->getRHS(); 10475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Result == 0) std::swap(TrueExp, FalseExp); 10485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Evaluate the false one first, discard the result. 10503907323dd6665c0c4e383435cb145233f4533406Anders Carlsson if (FalseExp && !FalseExp->isIntegerConstantExpr(Result, Ctx, Loc, false)) 10515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 10525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Evalute the true one, capture the result. 10533907323dd6665c0c4e383435cb145233f4533406Anders Carlsson if (TrueExp && 10543907323dd6665c0c4e383435cb145233f4533406Anders Carlsson !TrueExp->isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated)) 10555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 10565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 10575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 105804421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner case CXXDefaultArgExprClass: 105904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return cast<CXXDefaultArgExpr>(this) 106004421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner ->isIntegerConstantExpr(Result, Ctx, Loc, isEvaluated); 10615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Cases that are valid constant exprs fall through to here. 10645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result.setIsUnsigned(getType()->isUnsignedIntegerType()); 10655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 10665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 10675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// isNullPointerConstant - C99 6.3.2.3p3 - Return true if this is either an 10695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// integer constant expression with the value zero, or if this is one that is 10705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// cast to void*. 1071590b6646ef747d2f7b42e5f40487ff07642d7b6fChris Lattnerbool Expr::isNullPointerConstant(ASTContext &Ctx) const { 1072aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // Strip off a cast to void*, if it exists. 10730835a3cdeefe714b4959d31127ea155e56393125Argyrios Kyrtzidis if (const ExplicitCastExpr *CE = dyn_cast<ExplicitCastExpr>(this)) { 1074aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // Check that it is a cast to void*. 10754b3f9b367c16e494c181d6f03d53497ae1275fbeEli Friedman if (const PointerType *PT = CE->getType()->getAsPointerType()) { 10765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer QualType Pointee = PT->getPointeeType(); 1077f46699ce225811d8d9dbab9d00189a0e54469457Chris Lattner if (Pointee.getCVRQualifiers() == 0 && 1078f46699ce225811d8d9dbab9d00189a0e54469457Chris Lattner Pointee->isVoidType() && // to void* 1079aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff CE->getSubExpr()->getType()->isIntegerType()) // from int. 1080aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff return CE->getSubExpr()->isNullPointerConstant(Ctx); 10815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1082aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff } else if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(this)) { 1083aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // Ignore the ImplicitCastExpr type entirely. 1084aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff return ICE->getSubExpr()->isNullPointerConstant(Ctx); 1085aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff } else if (const ParenExpr *PE = dyn_cast<ParenExpr>(this)) { 1086aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // Accept ((void*)0) as a null pointer constant, as many other 1087aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // implementations do. 1088aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff return PE->getSubExpr()->isNullPointerConstant(Ctx); 10898123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner } else if (const CXXDefaultArgExpr *DefaultArg 10908123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner = dyn_cast<CXXDefaultArgExpr>(this)) { 109104421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // See through default argument expressions 109204421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner return DefaultArg->getExpr()->isNullPointerConstant(Ctx); 1093aaffbf7c790a324ed114184db771aae2d2e9151cSteve Naroff } 1094aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff 1095aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff // This expression must be an integer type. 1096aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff if (!getType()->isIntegerType()) 1097aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff return false; 1098aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff 10995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we have an integer constant expression, we need to *evaluate* it and 11005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // test for the value 0. 11015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::APSInt Val(32); 1102aa58f00ebba5f14955001736b7aea20bb5bd91e6Steve Naroff return isIntegerConstantExpr(Val, Ctx, 0, true) && Val == 0; 11035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 110431a458462c6cf417a84e0c47852b18fb22d79acbSteve Naroff 1105213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begemanunsigned ExtVectorElementExpr::getNumElements() const { 11068a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman if (const VectorType *VT = getType()->getAsVectorType()) 11078a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman return VT->getNumElements(); 11088a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman return 1; 11094d0ac88428b3ed7c6f3a2f4e758ea5424ecd70aeChris Lattner} 11104d0ac88428b3ed7c6f3a2f4e758ea5424ecd70aeChris Lattner 11118a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman/// containsDuplicateElements - Return true if any element access is repeated. 1112213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begemanbool ExtVectorElementExpr::containsDuplicateElements() const { 1113fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff const char *compStr = Accessor.getName(); 1114fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff unsigned length = strlen(compStr); 1115fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff 1116fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff for (unsigned i = 0; i < length-1; i++) { 1117fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff const char *s = compStr+i; 1118fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff for (const char c = *s++; *s; s++) 1119fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff if (c == *s) 1120fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff return true; 1121fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff } 1122fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff return false; 1123fec0b49c3fa621fbf63e420f3d54a5bb3a0265d2Steve Naroff} 1124b8f849da3cedee2f61ad98389115ddd04e439d60Chris Lattner 11258a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman/// getEncodedElementAccess - We encode the fields as a llvm ConstantArray. 11263b8d116703db8018f855cbb4733ace426422623bNate Begemanvoid ExtVectorElementExpr::getEncodedElementAccess( 11273b8d116703db8018f855cbb4733ace426422623bNate Begeman llvm::SmallVectorImpl<unsigned> &Elts) const { 1128b8f849da3cedee2f61ad98389115ddd04e439d60Chris Lattner const char *compStr = Accessor.getName(); 11298a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman 11308a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman bool isHi = !strcmp(compStr, "hi"); 11318a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman bool isLo = !strcmp(compStr, "lo"); 11328a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman bool isEven = !strcmp(compStr, "e"); 11338a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman bool isOdd = !strcmp(compStr, "o"); 11348a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman 11358a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman for (unsigned i = 0, e = getNumElements(); i != e; ++i) { 11368a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman uint64_t Index; 11378a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman 11388a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman if (isHi) 11398a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = e + i; 11408a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman else if (isLo) 11418a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = i; 11428a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman else if (isEven) 11438a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = 2 * i; 11448a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman else if (isOdd) 11458a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = 2 * i + 1; 11468a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman else 11478a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman Index = ExtVectorType::getAccessorIdx(compStr[i]); 1148b8f849da3cedee2f61ad98389115ddd04e439d60Chris Lattner 11493b8d116703db8018f855cbb4733ace426422623bNate Begeman Elts.push_back(Index); 1150b8f849da3cedee2f61ad98389115ddd04e439d60Chris Lattner } 11518a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman} 11528a99764f9b778a54e7440b1ee06a1e48f25d76d8Nate Begeman 115368d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff// constructor for instance messages. 1154bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve NaroffObjCMessageExpr::ObjCMessageExpr(Expr *receiver, Selector selInfo, 1155a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek QualType retType, ObjCMethodDecl *mproto, 1156db611d556f71f98b66b69514d45958d76e5727abSteve Naroff SourceLocation LBrac, SourceLocation RBrac, 115749f109c786f99eb7468dac3976db083a65493444Steve Naroff Expr **ArgExprs, unsigned nargs) 1158db611d556f71f98b66b69514d45958d76e5727abSteve Naroff : Expr(ObjCMessageExprClass, retType), SelName(selInfo), 1159ea958e57a370b641c5a69347b75e9f8e3b5a41a2Ted Kremenek MethodProto(mproto) { 116049f109c786f99eb7468dac3976db083a65493444Steve Naroff NumArgs = nargs; 11615549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SubExprs = new Stmt*[NumArgs+1]; 116268d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff SubExprs[RECEIVER] = receiver; 116349f109c786f99eb7468dac3976db083a65493444Steve Naroff if (NumArgs) { 116449f109c786f99eb7468dac3976db083a65493444Steve Naroff for (unsigned i = 0; i != NumArgs; ++i) 116568d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff SubExprs[i+ARGS_START] = static_cast<Expr *>(ArgExprs[i]); 116668d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff } 1167563477da25f824e37c535131695dc4dc9b68c465Steve Naroff LBracloc = LBrac; 1168563477da25f824e37c535131695dc4dc9b68c465Steve Naroff RBracloc = RBrac; 1169563477da25f824e37c535131695dc4dc9b68c465Steve Naroff} 1170563477da25f824e37c535131695dc4dc9b68c465Steve Naroff 117168d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff// constructor for class messages. 117268d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff// FIXME: clsName should be typed to ObjCInterfaceType 1173bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve NaroffObjCMessageExpr::ObjCMessageExpr(IdentifierInfo *clsName, Selector selInfo, 1174a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek QualType retType, ObjCMethodDecl *mproto, 1175db611d556f71f98b66b69514d45958d76e5727abSteve Naroff SourceLocation LBrac, SourceLocation RBrac, 117649f109c786f99eb7468dac3976db083a65493444Steve Naroff Expr **ArgExprs, unsigned nargs) 1177db611d556f71f98b66b69514d45958d76e5727abSteve Naroff : Expr(ObjCMessageExprClass, retType), SelName(selInfo), 1178ea958e57a370b641c5a69347b75e9f8e3b5a41a2Ted Kremenek MethodProto(mproto) { 117949f109c786f99eb7468dac3976db083a65493444Steve Naroff NumArgs = nargs; 11805549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek SubExprs = new Stmt*[NumArgs+1]; 11814df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SubExprs[RECEIVER] = (Expr*) ((uintptr_t) clsName | IsClsMethDeclUnknown); 118249f109c786f99eb7468dac3976db083a65493444Steve Naroff if (NumArgs) { 118349f109c786f99eb7468dac3976db083a65493444Steve Naroff for (unsigned i = 0; i != NumArgs; ++i) 118468d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff SubExprs[i+ARGS_START] = static_cast<Expr *>(ArgExprs[i]); 118568d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff } 1186563477da25f824e37c535131695dc4dc9b68c465Steve Naroff LBracloc = LBrac; 1187563477da25f824e37c535131695dc4dc9b68c465Steve Naroff RBracloc = RBrac; 1188563477da25f824e37c535131695dc4dc9b68c465Steve Naroff} 1189563477da25f824e37c535131695dc4dc9b68c465Steve Naroff 11904df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek// constructor for class messages. 11914df728e368fa1f65ffc57572fed613dcca5b4fe8Ted KremenekObjCMessageExpr::ObjCMessageExpr(ObjCInterfaceDecl *cls, Selector selInfo, 11924df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek QualType retType, ObjCMethodDecl *mproto, 11934df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SourceLocation LBrac, SourceLocation RBrac, 11944df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek Expr **ArgExprs, unsigned nargs) 11954df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek: Expr(ObjCMessageExprClass, retType), SelName(selInfo), 11964df728e368fa1f65ffc57572fed613dcca5b4fe8Ted KremenekMethodProto(mproto) { 11974df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek NumArgs = nargs; 11984df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SubExprs = new Stmt*[NumArgs+1]; 11994df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SubExprs[RECEIVER] = (Expr*) ((uintptr_t) cls | IsClsMethDeclKnown); 12004df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek if (NumArgs) { 12014df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek for (unsigned i = 0; i != NumArgs; ++i) 12024df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek SubExprs[i+ARGS_START] = static_cast<Expr *>(ArgExprs[i]); 12034df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek } 12044df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek LBracloc = LBrac; 12054df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek RBracloc = RBrac; 12064df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek} 12074df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek 12084df728e368fa1f65ffc57572fed613dcca5b4fe8Ted KremenekObjCMessageExpr::ClassInfo ObjCMessageExpr::getClassInfo() const { 12094df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek uintptr_t x = (uintptr_t) SubExprs[RECEIVER]; 12104df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek switch (x & Flags) { 12114df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek default: 12124df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek assert(false && "Invalid ObjCMessageExpr."); 12134df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek case IsInstMeth: 12144df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek return ClassInfo(0, 0); 12154df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek case IsClsMethDeclUnknown: 12164df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek return ClassInfo(0, (IdentifierInfo*) (x & ~Flags)); 12174df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek case IsClsMethDeclKnown: { 12184df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek ObjCInterfaceDecl* D = (ObjCInterfaceDecl*) (x & ~Flags); 12194df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek return ClassInfo(D, D->getIdentifier()); 12204df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek } 12214df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek } 12224df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek} 12234df728e368fa1f65ffc57572fed613dcca5b4fe8Ted Kremenek 122427437caadea35f84d550cd29f024fcf3ea240eecChris Lattnerbool ChooseExpr::isConditionTrue(ASTContext &C) const { 122532442bbc98bafa512fa42d46fedf60ed7d79f574Daniel Dunbar return getCond()->getIntegerConstantExprValue(C) != 0; 122627437caadea35f84d550cd29f024fcf3ea240eecChris Lattner} 122727437caadea35f84d550cd29f024fcf3ea240eecChris Lattner 12285a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlssonstatic int64_t evaluateOffsetOf(ASTContext& C, const Expr *E) 12295a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson{ 12305a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { 12315a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson QualType Ty = ME->getBase()->getType(); 12325a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 12335a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson RecordDecl *RD = Ty->getAsRecordType()->getDecl(); 123498be4943e8dc4f3905629a7102668960873cf863Chris Lattner const ASTRecordLayout &RL = C.getASTRecordLayout(RD); 12355a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson FieldDecl *FD = ME->getMemberDecl(); 12365a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 12375a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson // FIXME: This is linear time. 12385a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson unsigned i = 0, e = 0; 12395a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson for (i = 0, e = RD->getNumMembers(); i != e; i++) { 12405a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson if (RD->getMember(i) == FD) 12415a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson break; 12425a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson } 12435a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 12445a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson return RL.getFieldOffset(i) + evaluateOffsetOf(C, ME->getBase()); 12455a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson } else if (const ArraySubscriptExpr *ASE = dyn_cast<ArraySubscriptExpr>(E)) { 12465a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson const Expr *Base = ASE->getBase(); 12475a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 124898be4943e8dc4f3905629a7102668960873cf863Chris Lattner int64_t size = C.getTypeSize(ASE->getType()); 124932442bbc98bafa512fa42d46fedf60ed7d79f574Daniel Dunbar size *= ASE->getIdx()->getIntegerConstantExprValue(C).getSExtValue(); 12505a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 12515a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson return size + evaluateOffsetOf(C, Base); 12525a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson } else if (isa<CompoundLiteralExpr>(E)) 12535a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson return 0; 12545a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 12555a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson assert(0 && "Unknown offsetof subexpression!"); 12565a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson return 0; 12575a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson} 12585a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 12595a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlssonint64_t UnaryOperator::evaluateOffsetOf(ASTContext& C) const 12605a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson{ 12615a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson assert(Opc == OffsetOf && "Unary operator not offsetof!"); 12625a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 126398be4943e8dc4f3905629a7102668960873cf863Chris Lattner unsigned CharSize = C.Target.getCharWidth(); 12645549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return ::evaluateOffsetOf(C, cast<Expr>(Val)) / CharSize; 12655a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson} 12665a1deb8d9c0722beae28d693fa137bbb942bd11fAnders Carlsson 12679048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbarvoid SizeOfAlignOfTypeExpr::Destroy(ASTContext& C) { 12689048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar // Override default behavior of traversing children. We do not want 12699048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar // to delete the type. 12709048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar} 12719048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar 127277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek//===----------------------------------------------------------------------===// 127377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// Child Iterators for iterating over subexpressions/substatements 127477ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek//===----------------------------------------------------------------------===// 127577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 127677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// DeclRefExpr 12779ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator DeclRefExpr::child_begin() { return child_iterator(); } 12789ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator DeclRefExpr::child_end() { return child_iterator(); } 127977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 12807779db42c94405ecbd6ee45efb293483fa6cbeffSteve Naroff// ObjCIvarRefExpr 12815549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ObjCIvarRefExpr::child_begin() { return &Base; } 12825549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ObjCIvarRefExpr::child_end() { return &Base+1; } 12837779db42c94405ecbd6ee45efb293483fa6cbeffSteve Naroff 1284e3e9add4fd788927df6f545570e7838db59c01d7Steve Naroff// ObjCPropertyRefExpr 12855549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ObjCPropertyRefExpr::child_begin() { return &Base; } 12865549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ObjCPropertyRefExpr::child_end() { return &Base+1; } 1287ae7840776d6cd31b4d7a4a345b61bcbb3744df6cSteve Naroff 1288d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris Lattner// PredefinedExpr 1289d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris LattnerStmt::child_iterator PredefinedExpr::child_begin() { return child_iterator(); } 1290d9f6910f4ef37c0e8eeee2a01287d9572c3176efChris LattnerStmt::child_iterator PredefinedExpr::child_end() { return child_iterator(); } 129177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 129277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// IntegerLiteral 12939ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator IntegerLiteral::child_begin() { return child_iterator(); } 12949ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator IntegerLiteral::child_end() { return child_iterator(); } 129577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 129677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// CharacterLiteral 12979ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator CharacterLiteral::child_begin() { return child_iterator(); } 12989ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator CharacterLiteral::child_end() { return child_iterator(); } 129977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 130077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// FloatingLiteral 13019ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator FloatingLiteral::child_begin() { return child_iterator(); } 13029ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator FloatingLiteral::child_end() { return child_iterator(); } 130377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 13045d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner// ImaginaryLiteral 13055549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ImaginaryLiteral::child_begin() { return &Val; } 13065549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ImaginaryLiteral::child_end() { return &Val+1; } 13075d66145eed1c319df5a69977cb8ff74f597ea544Chris Lattner 130877ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// StringLiteral 13099ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator StringLiteral::child_begin() { return child_iterator(); } 13109ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator StringLiteral::child_end() { return child_iterator(); } 131177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 131277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// ParenExpr 13135549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ParenExpr::child_begin() { return &Val; } 13145549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ParenExpr::child_end() { return &Val+1; } 131577ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 131677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// UnaryOperator 13175549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator UnaryOperator::child_begin() { return &Val; } 13185549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator UnaryOperator::child_end() { return &Val+1; } 131977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 132077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// SizeOfAlignOfTypeExpr 13219ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator SizeOfAlignOfTypeExpr::child_begin() { 1322699e9fbeae34cdd651b8e6308649c8939f090cbdTed Kremenek // If the type is a VLA type (and not a typedef), the size expression of the 1323699e9fbeae34cdd651b8e6308649c8939f090cbdTed Kremenek // VLA needs to be treated as an executable expression. 1324699e9fbeae34cdd651b8e6308649c8939f090cbdTed Kremenek if (VariableArrayType* T = dyn_cast<VariableArrayType>(Ty.getTypePtr())) 1325699e9fbeae34cdd651b8e6308649c8939f090cbdTed Kremenek return child_iterator(T); 1326699e9fbeae34cdd651b8e6308649c8939f090cbdTed Kremenek else 1327699e9fbeae34cdd651b8e6308649c8939f090cbdTed Kremenek return child_iterator(); 13289ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 13299ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator SizeOfAlignOfTypeExpr::child_end() { 1330699e9fbeae34cdd651b8e6308649c8939f090cbdTed Kremenek return child_iterator(); 13319ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 133277ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 133377ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// ArraySubscriptExpr 13341237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator ArraySubscriptExpr::child_begin() { 13355549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 133677ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek} 13371237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator ArraySubscriptExpr::child_end() { 13385549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+END_EXPR; 133977ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek} 134077ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek 134177ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek// CallExpr 13421237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator CallExpr::child_begin() { 13435549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 134477ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek} 13451237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator CallExpr::child_end() { 13465549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+NumArgs+ARGS_START; 134777ed8e4edf6ed78c53fb20ec3210aff2a59c9d87Ted Kremenek} 13481237c673c07f9d827129ba02720108816abde562Ted Kremenek 13491237c673c07f9d827129ba02720108816abde562Ted Kremenek// MemberExpr 13505549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator MemberExpr::child_begin() { return &Base; } 13515549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator MemberExpr::child_end() { return &Base+1; } 13521237c673c07f9d827129ba02720108816abde562Ted Kremenek 1353213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman// ExtVectorElementExpr 13545549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ExtVectorElementExpr::child_begin() { return &Base; } 13555549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ExtVectorElementExpr::child_end() { return &Base+1; } 13561237c673c07f9d827129ba02720108816abde562Ted Kremenek 13571237c673c07f9d827129ba02720108816abde562Ted Kremenek// CompoundLiteralExpr 13585549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator CompoundLiteralExpr::child_begin() { return &Init; } 13595549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator CompoundLiteralExpr::child_end() { return &Init+1; } 13601237c673c07f9d827129ba02720108816abde562Ted Kremenek 13611237c673c07f9d827129ba02720108816abde562Ted Kremenek// CastExpr 13625549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator CastExpr::child_begin() { return &Op; } 13635549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator CastExpr::child_end() { return &Op+1; } 13641237c673c07f9d827129ba02720108816abde562Ted Kremenek 13651237c673c07f9d827129ba02720108816abde562Ted Kremenek// BinaryOperator 13661237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator BinaryOperator::child_begin() { 13675549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 13681237c673c07f9d827129ba02720108816abde562Ted Kremenek} 13691237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator BinaryOperator::child_end() { 13705549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+END_EXPR; 13711237c673c07f9d827129ba02720108816abde562Ted Kremenek} 13721237c673c07f9d827129ba02720108816abde562Ted Kremenek 13731237c673c07f9d827129ba02720108816abde562Ted Kremenek// ConditionalOperator 13741237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator ConditionalOperator::child_begin() { 13755549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 13761237c673c07f9d827129ba02720108816abde562Ted Kremenek} 13771237c673c07f9d827129ba02720108816abde562Ted KremenekStmt::child_iterator ConditionalOperator::child_end() { 13785549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+END_EXPR; 13791237c673c07f9d827129ba02720108816abde562Ted Kremenek} 13801237c673c07f9d827129ba02720108816abde562Ted Kremenek 13811237c673c07f9d827129ba02720108816abde562Ted Kremenek// AddrLabelExpr 13829ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator AddrLabelExpr::child_begin() { return child_iterator(); } 13839ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator AddrLabelExpr::child_end() { return child_iterator(); } 13841237c673c07f9d827129ba02720108816abde562Ted Kremenek 13851237c673c07f9d827129ba02720108816abde562Ted Kremenek// StmtExpr 13865549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator StmtExpr::child_begin() { return &SubStmt; } 13875549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator StmtExpr::child_end() { return &SubStmt+1; } 13881237c673c07f9d827129ba02720108816abde562Ted Kremenek 13891237c673c07f9d827129ba02720108816abde562Ted Kremenek// TypesCompatibleExpr 13909ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator TypesCompatibleExpr::child_begin() { 13919ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 13929ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 13939ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek 13949ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator TypesCompatibleExpr::child_end() { 13959ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 13969ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 13971237c673c07f9d827129ba02720108816abde562Ted Kremenek 13981237c673c07f9d827129ba02720108816abde562Ted Kremenek// ChooseExpr 13995549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ChooseExpr::child_begin() { return &SubExprs[0]; } 14005549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator ChooseExpr::child_end() { return &SubExprs[0]+END_EXPR; } 14011237c673c07f9d827129ba02720108816abde562Ted Kremenek 1402e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman// OverloadExpr 14035549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator OverloadExpr::child_begin() { return &SubExprs[0]; } 14045549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator OverloadExpr::child_end() { return &SubExprs[0]+NumExprs; } 1405e2ce1d9440186cf3332368291cd884a6e3ae8946Nate Begeman 1406d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman// ShuffleVectorExpr 1407d38617c8a50f9729c254ab76cd359af797c6739bEli FriedmanStmt::child_iterator ShuffleVectorExpr::child_begin() { 14085549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]; 1409d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman} 1410d38617c8a50f9729c254ab76cd359af797c6739bEli FriedmanStmt::child_iterator ShuffleVectorExpr::child_end() { 14115549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+NumExprs; 1412d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman} 1413d38617c8a50f9729c254ab76cd359af797c6739bEli Friedman 14147c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson// VAArgExpr 14155549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator VAArgExpr::child_begin() { return &Val; } 14165549976193e34417d4474a5f4a514268ef6666c7Ted KremenekStmt::child_iterator VAArgExpr::child_end() { return &Val+1; } 14177c50aca2fe36f6daa9bf1c8c428f30e72f96470aAnders Carlsson 141866b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson// InitListExpr 141966b5a8a39088598c01a9fa6f032dc908612dc8ecAnders CarlssonStmt::child_iterator InitListExpr::child_begin() { 14205549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return InitExprs.size() ? &InitExprs[0] : 0; 142166b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson} 142266b5a8a39088598c01a9fa6f032dc908612dc8ecAnders CarlssonStmt::child_iterator InitListExpr::child_end() { 14235549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return InitExprs.size() ? &InitExprs[0] + InitExprs.size() : 0; 142466b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson} 142566b5a8a39088598c01a9fa6f032dc908612dc8ecAnders Carlsson 14261237c673c07f9d827129ba02720108816abde562Ted Kremenek// ObjCStringLiteral 14279ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCStringLiteral::child_begin() { 14289ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 14299ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 14309ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCStringLiteral::child_end() { 14319ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 14329ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 14331237c673c07f9d827129ba02720108816abde562Ted Kremenek 14341237c673c07f9d827129ba02720108816abde562Ted Kremenek// ObjCEncodeExpr 14359ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCEncodeExpr::child_begin() { return child_iterator(); } 14369ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCEncodeExpr::child_end() { return child_iterator(); } 14371237c673c07f9d827129ba02720108816abde562Ted Kremenek 1438b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian// ObjCSelectorExpr 14399ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCSelectorExpr::child_begin() { 14409ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 14419ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 14429ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCSelectorExpr::child_end() { 14439ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 14449ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 1445b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian 1446390d50a725497e99247dc104a7d2c2a255d3af14Fariborz Jahanian// ObjCProtocolExpr 14479ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCProtocolExpr::child_begin() { 14489ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 14499ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 14509ac5928abeb3a47592201e1c30fe2930c20a507eTed KremenekStmt::child_iterator ObjCProtocolExpr::child_end() { 14519ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek return child_iterator(); 14529ac5928abeb3a47592201e1c30fe2930c20a507eTed Kremenek} 1453390d50a725497e99247dc104a7d2c2a255d3af14Fariborz Jahanian 1454563477da25f824e37c535131695dc4dc9b68c465Steve Naroff// ObjCMessageExpr 1455ea958e57a370b641c5a69347b75e9f8e3b5a41a2Ted KremenekStmt::child_iterator ObjCMessageExpr::child_begin() { 14565549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return getReceiver() ? &SubExprs[0] : &SubExprs[0] + ARGS_START; 1457563477da25f824e37c535131695dc4dc9b68c465Steve Naroff} 1458563477da25f824e37c535131695dc4dc9b68c465Steve NaroffStmt::child_iterator ObjCMessageExpr::child_end() { 14595549976193e34417d4474a5f4a514268ef6666c7Ted Kremenek return &SubExprs[0]+ARGS_START+getNumArgs(); 1460563477da25f824e37c535131695dc4dc9b68c465Steve Naroff} 1461563477da25f824e37c535131695dc4dc9b68c465Steve Naroff 14624eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff// Blocks 14639c3c902835ef7d37300463ad47176ec21a67dc8bSteve NaroffStmt::child_iterator BlockExpr::child_begin() { 14644eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff return reinterpret_cast<Stmt**>(&Body); 14654eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff} 14669c3c902835ef7d37300463ad47176ec21a67dc8bSteve NaroffStmt::child_iterator BlockExpr::child_end() { 14674eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff return reinterpret_cast<Stmt**>(&Body)+1; 14684eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff} 14694eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 1470dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve NaroffStmt::child_iterator BlockDeclRefExpr::child_begin(){return child_iterator();} 1471dd972f20dc2bd3609d833893e5c6544ac09b59a9Steve NaroffStmt::child_iterator BlockDeclRefExpr::child_end() { return child_iterator();} 14724eb206bebcdab28ababe8df55c6185cec2cdc071Steve Naroff 1473