зеркало из https://github.com/microsoft/clang-1.git
modern objective-c translator: writing numeric
literals. // rdar://10803676 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153756 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Fariborz Jahanian
Родитель
8b0fa5241a
Коммит
0f9b18ed04
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@ -318,6 +318,7 @@ namespace {
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Stmt *RewriteMessageExpr(ObjCMessageExpr *Exp);
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Stmt *RewriteObjCStringLiteral(ObjCStringLiteral *Exp);
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Stmt *RewriteObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Exp);
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Stmt *RewriteObjCNumericLiteralExpr(ObjCNumericLiteral *Exp);
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Stmt *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp);
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Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S);
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Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S);
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@ -2466,6 +2467,105 @@ Stmt *RewriteModernObjC::RewriteObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Exp) {
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return PE;
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}
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Stmt *RewriteModernObjC::RewriteObjCNumericLiteralExpr(ObjCNumericLiteral *Exp) {
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// synthesize declaration of helper functions needed in this routine.
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if (!SelGetUidFunctionDecl)
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SynthSelGetUidFunctionDecl();
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// use objc_msgSend() for all.
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if (!MsgSendFunctionDecl)
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SynthMsgSendFunctionDecl();
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if (!GetClassFunctionDecl)
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SynthGetClassFunctionDecl();
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FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
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SourceLocation StartLoc = Exp->getLocStart();
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SourceLocation EndLoc = Exp->getLocEnd();
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// Synthesize a call to objc_msgSend().
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SmallVector<Expr*, 4> MsgExprs;
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SmallVector<Expr*, 4> ClsExprs;
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QualType argType = Context->getPointerType(Context->CharTy);
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QualType expType = Exp->getType();
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// Create a call to objc_getClass("NSNumber"). It will be th 1st argument.
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ObjCInterfaceDecl *Class =
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expType->getPointeeType()->getAs<ObjCObjectType>()->getInterface();
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IdentifierInfo *clsName = Class->getIdentifier();
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ClsExprs.push_back(StringLiteral::Create(*Context,
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clsName->getName(),
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StringLiteral::Ascii, false,
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argType, SourceLocation()));
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CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
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&ClsExprs[0],
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ClsExprs.size(),
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StartLoc, EndLoc);
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MsgExprs.push_back(Cls);
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// Create a call to sel_registerName("numberWithBool:"), etc.
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// it will be the 2nd argument.
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SmallVector<Expr*, 4> SelExprs;
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ObjCMethodDecl *NumericMethod = Exp->getObjCNumericLiteralMethod();
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SelExprs.push_back(StringLiteral::Create(*Context,
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NumericMethod->getSelector().getAsString(),
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StringLiteral::Ascii, false,
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argType, SourceLocation()));
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CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
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&SelExprs[0], SelExprs.size(),
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StartLoc, EndLoc);
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MsgExprs.push_back(SelExp);
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// User provided numeric literal is the 3rd, and last, argument.
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Expr *userExpr = Exp->getNumber();
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if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(userExpr)) {
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QualType type = ICE->getType();
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const Expr *SubExpr = ICE->IgnoreParenImpCasts();
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CastKind CK = CK_BitCast;
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if (SubExpr->getType()->isIntegralType(*Context) && type->isBooleanType())
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CK = CK_IntegralToBoolean;
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userExpr = NoTypeInfoCStyleCastExpr(Context, type, CK, userExpr);
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}
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MsgExprs.push_back(userExpr);
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SmallVector<QualType, 4> ArgTypes;
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ArgTypes.push_back(Context->getObjCIdType());
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ArgTypes.push_back(Context->getObjCSelType());
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for (ObjCMethodDecl::param_iterator PI = NumericMethod->param_begin(),
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E = NumericMethod->param_end(); PI != E; ++PI)
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ArgTypes.push_back((*PI)->getType());
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QualType returnType = Exp->getType();
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// Get the type, we will need to reference it in a couple spots.
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QualType msgSendType = MsgSendFlavor->getType();
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// Create a reference to the objc_msgSend() declaration.
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DeclRefExpr *DRE = new (Context) DeclRefExpr(MsgSendFlavor, false, msgSendType,
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VK_LValue, SourceLocation());
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CastExpr *cast = NoTypeInfoCStyleCastExpr(Context,
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Context->getPointerType(Context->VoidTy),
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CK_BitCast, DRE);
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// Now do the "normal" pointer to function cast.
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QualType castType =
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getSimpleFunctionType(returnType, &ArgTypes[0], ArgTypes.size(),
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NumericMethod->isVariadic());
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castType = Context->getPointerType(castType);
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cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
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cast);
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// Don't forget the parens to enforce the proper binding.
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ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
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const FunctionType *FT = msgSendType->getAs<FunctionType>();
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CallExpr *CE = new (Context) CallExpr(*Context, PE, &MsgExprs[0],
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MsgExprs.size(),
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FT->getResultType(), VK_RValue,
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EndLoc);
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ReplaceStmt(Exp, CE);
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return CE;
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}
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// struct objc_super { struct objc_object *receiver; struct objc_class *super; };
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QualType RewriteModernObjC::getSuperStructType() {
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if (!SuperStructDecl) {
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@ -4758,6 +4858,10 @@ Stmt *RewriteModernObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) {
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if (ObjCBoolLiteralExpr *BoolLitExpr = dyn_cast<ObjCBoolLiteralExpr>(S))
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return RewriteObjCBoolLiteralExpr(BoolLitExpr);
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if (ObjCNumericLiteral *NumericLitExpr = dyn_cast<ObjCNumericLiteral>(S))
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return RewriteObjCNumericLiteralExpr(NumericLitExpr);
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if (ObjCMessageExpr *MessExpr = dyn_cast<ObjCMessageExpr>(S)) {
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#if 0
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@ -0,0 +1,69 @@
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// RUN: %clang_cc1 -E %s -o %t.mm
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// RUN: %clang_cc1 -x objective-c++ -fblocks -fms-extensions -rewrite-objc %t.mm -o - | FileCheck %s
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// rdar://10803676
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extern "C" void *sel_registerName(const char *);
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typedef signed char BOOL;
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typedef long NSInteger;
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typedef unsigned long NSUInteger;
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#if __has_feature(objc_bool)
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#define YES __objc_yes
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#define NO __objc_no
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#else
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#define YES ((BOOL)1)
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#define NO ((BOOL)0)
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#endif
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@interface NSNumber
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+ (NSNumber *)numberWithChar:(char)value;
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+ (NSNumber *)numberWithUnsignedChar:(unsigned char)value;
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+ (NSNumber *)numberWithShort:(short)value;
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+ (NSNumber *)numberWithUnsignedShort:(unsigned short)value;
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+ (NSNumber *)numberWithInt:(int)value;
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+ (NSNumber *)numberWithUnsignedInt:(unsigned int)value;
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+ (NSNumber *)numberWithLong:(long)value;
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+ (NSNumber *)numberWithUnsignedLong:(unsigned long)value;
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+ (NSNumber *)numberWithLongLong:(long long)value;
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+ (NSNumber *)numberWithUnsignedLongLong:(unsigned long long)value;
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+ (NSNumber *)numberWithFloat:(float)value;
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+ (NSNumber *)numberWithDouble:(double)value;
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+ (NSNumber *)numberWithBool:(BOOL)value;
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+ (NSNumber *)numberWithInteger:(NSInteger)value ;
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+ (NSNumber *)numberWithUnsignedInteger:(NSUInteger)value ;
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@end
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int main(int argc, const char *argv[]) {
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// character literals.
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NSNumber *theLetterZ = @'Z'; // equivalent to [NSNumber numberWithChar:'Z']
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// integral literals.
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NSNumber *fortyTwo = @42; // equivalent to [NSNumber numberWithInt:42]
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NSNumber *fortyTwoUnsigned = @42U; // equivalent to [NSNumber numberWithUnsignedInt:42U]
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NSNumber *fortyTwoLong = @42L; // equivalent to [NSNumber numberWithLong:42L]
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NSNumber *fortyTwoLongLong = @42LL; // equivalent to [NSNumber numberWithLongLong:42LL]
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// floating point literals.
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NSNumber *piFloat = @3.141592654F; // equivalent to [NSNumber numberWithFloat:3.141592654F]
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NSNumber *piDouble = @3.1415926535; // equivalent to [NSNumber numberWithDouble:3.1415926535]
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// BOOL literals.
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NSNumber *yesNumber = @YES; // equivalent to [NSNumber numberWithBool:YES]
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NSNumber *noNumber = @NO; // equivalent to [NSNumber numberWithBool:NO]
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NSNumber *trueNumber = @true; // equivalent to [NSNumber numberWithBool:(BOOL)true]
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NSNumber *falseNumber = @false; // equivalent to [NSNumber numberWithBool:(BOOL)false]
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}
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// CHECK: NSNumber *theLetterZ = ((NSNumber *(*)(id, SEL, char))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithChar:"), 'Z');
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// CHECK: NSNumber *fortyTwo = ((NSNumber *(*)(id, SEL, int))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithInt:"), 42);
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// CHECK: NSNumber *fortyTwoUnsigned = ((NSNumber *(*)(id, SEL, unsigned int))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithUnsignedInt:"), 42U);
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// CHECK: NSNumber *fortyTwoLong = ((NSNumber *(*)(id, SEL, long))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithLong:"), 42L);
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// CHECK: NSNumber *fortyTwoLongLong = ((NSNumber *(*)(id, SEL, long long))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithLongLong:"), 42LL);
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// CHECK: NSNumber *piFloat = ((NSNumber *(*)(id, SEL, float))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithFloat:"), 3.1415927);
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// CHECK: NSNumber *piDouble = ((NSNumber *(*)(id, SEL, double))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithDouble:"), 3.1415926535);
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// CHECK: NSNumber *yesNumber = ((NSNumber *(*)(id, SEL, BOOL))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithBool:"), (BOOL)true);
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// CHECK: NSNumber *noNumber = ((NSNumber *(*)(id, SEL, BOOL))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithBool:"), (BOOL)false);
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// CHECK: NSNumber *trueNumber = ((NSNumber *(*)(id, SEL, BOOL))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithBool:"), (BOOL)true);
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// CHECK: NSNumber *falseNumber = ((NSNumber *(*)(id, SEL, BOOL))(void *)objc_msgSend)(objc_getClass("NSNumber"), sel_registerName("numberWithBool:"), (BOOL)false);
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