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-rw-r--r--clang/lib/AST/ASTContext.cpp16
-rw-r--r--clang/lib/AST/DeclPrinter.cpp3
-rw-r--r--clang/lib/AST/ExprCXX.cpp2
-rw-r--r--clang/lib/AST/Stmt.cpp34
-rw-r--r--clang/lib/AST/StmtPrinter.cpp12
-rw-r--r--clang/lib/AST/StmtProfile.cpp4
-rw-r--r--clang/lib/Analysis/CFG.cpp120
-rw-r--r--clang/lib/CodeGen/CGStmt.cpp77
-rw-r--r--clang/lib/CodeGen/CodeGenFunction.h2
-rw-r--r--clang/lib/Parse/ParseDecl.cpp72
-rw-r--r--clang/lib/Parse/ParseStmt.cpp54
-rw-r--r--clang/lib/Sema/SemaDecl.cpp41
-rw-r--r--clang/lib/Sema/SemaLookup.cpp5
-rw-r--r--clang/lib/Sema/SemaOverload.cpp13
-rw-r--r--clang/lib/Sema/SemaStmt.cpp382
-rw-r--r--clang/lib/Sema/SemaTemplateInstantiateDecl.cpp4
-rw-r--r--clang/lib/Sema/TreeTransform.h77
-rw-r--r--clang/lib/Serialization/ASTReader.cpp5
-rw-r--r--clang/lib/Serialization/ASTReaderDecl.cpp1
-rw-r--r--clang/lib/Serialization/ASTReaderStmt.cpp20
-rw-r--r--clang/lib/Serialization/ASTWriter.cpp2
-rw-r--r--clang/lib/Serialization/ASTWriterDecl.cpp2
-rw-r--r--clang/lib/Serialization/ASTWriterStmt.cpp17
-rw-r--r--clang/lib/StaticAnalyzer/Core/ExprEngine.cpp1
24 files changed, 929 insertions, 37 deletions
diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index 7317928d971..eea5394cfa5 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -2754,6 +2754,22 @@ QualType ASTContext::getAutoType(QualType DeducedType) const {
return QualType(AT, 0);
}
+/// getAutoDeductType - Get type pattern for deducing against 'auto'.
+QualType ASTContext::getAutoDeductType() const {
+ if (AutoDeductTy.isNull())
+ AutoDeductTy = getAutoType(QualType());
+ assert(!AutoDeductTy.isNull() && "can't build 'auto' pattern");
+ return AutoDeductTy;
+}
+
+/// getAutoRRefDeductType - Get type pattern for deducing against 'auto &&'.
+QualType ASTContext::getAutoRRefDeductType() const {
+ if (AutoRRefDeductTy.isNull())
+ AutoRRefDeductTy = getRValueReferenceType(getAutoDeductType());
+ assert(!AutoRRefDeductTy.isNull() && "can't build 'auto &&' pattern");
+ return AutoRRefDeductTy;
+}
+
/// getTagDeclType - Return the unique reference to the type for the
/// specified TagDecl (struct/union/class/enum) decl.
QualType ASTContext::getTagDeclType(const TagDecl *Decl) const {
diff --git a/clang/lib/AST/DeclPrinter.cpp b/clang/lib/AST/DeclPrinter.cpp
index 446b4d46464..37cd2af1b18 100644
--- a/clang/lib/AST/DeclPrinter.cpp
+++ b/clang/lib/AST/DeclPrinter.cpp
@@ -567,7 +567,8 @@ void DeclPrinter::VisitVarDecl(VarDecl *D) {
T = Parm->getOriginalType();
T.getAsStringInternal(Name, Policy);
Out << Name;
- if (Expr *Init = D->getInit()) {
+ Expr *Init = D->getInit();
+ if (!Policy.SuppressInitializers && Init) {
if (D->hasCXXDirectInitializer())
Out << "(";
else {
diff --git a/clang/lib/AST/ExprCXX.cpp b/clang/lib/AST/ExprCXX.cpp
index 692c2c37607..127431ba7d6 100644
--- a/clang/lib/AST/ExprCXX.cpp
+++ b/clang/lib/AST/ExprCXX.cpp
@@ -189,7 +189,7 @@ UnresolvedLookupExpr::Create(ASTContext &C,
ExplicitTemplateArgumentList::sizeFor(Args));
return new (Mem) UnresolvedLookupExpr(C, NamingClass, QualifierLoc, NameInfo,
ADL, /*Overload*/ true, &Args,
- Begin, End);
+ Begin, End, /*StdIsAssociated=*/false);
}
UnresolvedLookupExpr *
diff --git a/clang/lib/AST/Stmt.cpp b/clang/lib/AST/Stmt.cpp
index 6c353192785..5b0db8621a3 100644
--- a/clang/lib/AST/Stmt.cpp
+++ b/clang/lib/AST/Stmt.cpp
@@ -540,6 +540,40 @@ CXXTryStmt::CXXTryStmt(SourceLocation tryLoc, Stmt *tryBlock,
std::copy(handlers, handlers + NumHandlers, Stmts + 1);
}
+CXXForRangeStmt::CXXForRangeStmt(DeclStmt *Range, DeclStmt *BeginEndStmt,
+ Expr *Cond, Expr *Inc, DeclStmt *LoopVar,
+ Stmt *Body, SourceLocation FL,
+ SourceLocation CL, SourceLocation RPL)
+ : Stmt(CXXForRangeStmtClass), ForLoc(FL), ColonLoc(CL), RParenLoc(RPL) {
+ SubExprs[RANGE] = Range;
+ SubExprs[BEGINEND] = BeginEndStmt;
+ SubExprs[COND] = reinterpret_cast<Stmt*>(Cond);
+ SubExprs[INC] = reinterpret_cast<Stmt*>(Inc);
+ SubExprs[LOOPVAR] = LoopVar;
+ SubExprs[BODY] = Body;
+}
+
+Expr *CXXForRangeStmt::getRangeInit() {
+ DeclStmt *RangeStmt = getRangeStmt();
+ VarDecl *RangeDecl = dyn_cast_or_null<VarDecl>(RangeStmt->getSingleDecl());
+ assert(RangeDecl &&& "for-range should have a single var decl");
+ return RangeDecl->getInit();
+}
+
+const Expr *CXXForRangeStmt::getRangeInit() const {
+ return const_cast<CXXForRangeStmt*>(this)->getRangeInit();
+}
+
+VarDecl *CXXForRangeStmt::getLoopVariable() {
+ Decl *LV = cast<DeclStmt>(getLoopVarStmt())->getSingleDecl();
+ assert(LV && "No loop variable in CXXForRangeStmt");
+ return cast<VarDecl>(LV);
+}
+
+const VarDecl *CXXForRangeStmt::getLoopVariable() const {
+ return const_cast<CXXForRangeStmt*>(this)->getLoopVariable();
+}
+
IfStmt::IfStmt(ASTContext &C, SourceLocation IL, VarDecl *var, Expr *cond,
Stmt *then, SourceLocation EL, Stmt *elsev)
: Stmt(IfStmtClass), IfLoc(IL), ElseLoc(EL)
diff --git a/clang/lib/AST/StmtPrinter.cpp b/clang/lib/AST/StmtPrinter.cpp
index 4f500441166..37010a0358d 100644
--- a/clang/lib/AST/StmtPrinter.cpp
+++ b/clang/lib/AST/StmtPrinter.cpp
@@ -291,6 +291,18 @@ void StmtPrinter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *Node) {
}
}
+void StmtPrinter::VisitCXXForRangeStmt(CXXForRangeStmt *Node) {
+ Indent() << "for (";
+ PrintingPolicy SubPolicy(Policy);
+ SubPolicy.SuppressInitializers = true;
+ Node->getLoopVariable()->print(OS, SubPolicy, IndentLevel);
+ OS << " : ";
+ PrintExpr(Node->getRangeInit());
+ OS << ") {\n";
+ PrintStmt(Node->getBody());
+ Indent() << "}\n";
+}
+
void StmtPrinter::VisitGotoStmt(GotoStmt *Node) {
Indent() << "goto " << Node->getLabel()->getName() << ";\n";
}
diff --git a/clang/lib/AST/StmtProfile.cpp b/clang/lib/AST/StmtProfile.cpp
index a506d055b30..92292cea719 100644
--- a/clang/lib/AST/StmtProfile.cpp
+++ b/clang/lib/AST/StmtProfile.cpp
@@ -177,6 +177,10 @@ void StmtProfiler::VisitCXXTryStmt(CXXTryStmt *S) {
VisitStmt(S);
}
+void StmtProfiler::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
+ VisitStmt(S);
+}
+
void StmtProfiler::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
VisitStmt(S);
}
diff --git a/clang/lib/Analysis/CFG.cpp b/clang/lib/Analysis/CFG.cpp
index 3dcc763edaa..149607404c9 100644
--- a/clang/lib/Analysis/CFG.cpp
+++ b/clang/lib/Analysis/CFG.cpp
@@ -312,6 +312,7 @@ private:
AddStmtChoice asc);
CFGBlock *VisitCXXThrowExpr(CXXThrowExpr *T);
CFGBlock *VisitCXXTryStmt(CXXTryStmt *S);
+ CFGBlock *VisitCXXForRangeStmt(CXXForRangeStmt *S);
CFGBlock *VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E,
AddStmtChoice asc);
CFGBlock *VisitCXXConstructExpr(CXXConstructExpr *C, AddStmtChoice asc);
@@ -911,6 +912,9 @@ tryAgain:
case Stmt::CXXTryStmtClass:
return VisitCXXTryStmt(cast<CXXTryStmt>(S));
+ case Stmt::CXXForRangeStmtClass:
+ return VisitCXXForRangeStmt(cast<CXXForRangeStmt>(S));
+
case Stmt::DeclStmtClass:
return VisitDeclStmt(cast<DeclStmt>(S));
@@ -2513,6 +2517,122 @@ CFGBlock* CFGBuilder::VisitCXXCatchStmt(CXXCatchStmt* CS) {
return CatchBlock;
}
+CFGBlock* CFGBuilder::VisitCXXForRangeStmt(CXXForRangeStmt* S) {
+ // C++0x for-range statements are specified as [stmt.ranged]:
+ //
+ // {
+ // auto && __range = range-init;
+ // for ( auto __begin = begin-expr,
+ // __end = end-expr;
+ // __begin != __end;
+ // ++__begin ) {
+ // for-range-declaration = *__begin;
+ // statement
+ // }
+ // }
+
+ // Save local scope position before the addition of the implicit variables.
+ SaveAndRestore<LocalScope::const_iterator> save_scope_pos(ScopePos);
+
+ // Create local scopes and destructors for range, begin and end variables.
+ if (Stmt *Range = S->getRangeStmt())
+ addLocalScopeForStmt(Range);
+ if (Stmt *BeginEnd = S->getBeginEndStmt())
+ addLocalScopeForStmt(BeginEnd);
+ addAutomaticObjDtors(ScopePos, save_scope_pos.get(), S);
+
+ LocalScope::const_iterator ContinueScopePos = ScopePos;
+
+ // "for" is a control-flow statement. Thus we stop processing the current
+ // block.
+ CFGBlock* LoopSuccessor = NULL;
+ if (Block) {
+ if (badCFG)
+ return 0;
+ LoopSuccessor = Block;
+ } else
+ LoopSuccessor = Succ;
+
+ // Save the current value for the break targets.
+ // All breaks should go to the code following the loop.
+ SaveAndRestore<JumpTarget> save_break(BreakJumpTarget);
+ BreakJumpTarget = JumpTarget(LoopSuccessor, ScopePos);
+
+ // The block for the __begin != __end expression.
+ CFGBlock* ConditionBlock = createBlock(false);
+ ConditionBlock->setTerminator(S);
+
+ // Now add the actual condition to the condition block.
+ if (Expr *C = S->getCond()) {
+ Block = ConditionBlock;
+ CFGBlock *BeginConditionBlock = addStmt(C);
+ if (badCFG)
+ return 0;
+ assert(BeginConditionBlock == ConditionBlock &&
+ "condition block in for-range was unexpectedly complex");
+ (void)BeginConditionBlock;
+ }
+
+ // The condition block is the implicit successor for the loop body as well as
+ // any code above the loop.
+ Succ = ConditionBlock;
+
+ // See if this is a known constant.
+ TryResult KnownVal(true);
+
+ if (S->getCond())
+ KnownVal = tryEvaluateBool(S->getCond());
+
+ // Now create the loop body.
+ {
+ assert(S->getBody());
+
+ // Save the current values for Block, Succ, and continue targets.
+ SaveAndRestore<CFGBlock*> save_Block(Block), save_Succ(Succ);
+ SaveAndRestore<JumpTarget> save_continue(ContinueJumpTarget);
+
+ // Generate increment code in its own basic block. This is the target of
+ // continue statements.
+ Block = 0;
+ Succ = addStmt(S->getInc());
+ ContinueJumpTarget = JumpTarget(Succ, ContinueScopePos);
+
+ // The starting block for the loop increment is the block that should
+ // represent the 'loop target' for looping back to the start of the loop.
+ ContinueJumpTarget.block->setLoopTarget(S);
+
+ // Finish up the increment block and prepare to start the loop body.
+ assert(Block);
+ if (badCFG)
+ return 0;
+ Block = 0;
+
+
+ // Add implicit scope and dtors for loop variable.
+ addLocalScopeAndDtors(S->getLoopVarStmt());
+
+ // Populate a new block to contain the loop body and loop variable.
+ Block = addStmt(S->getBody());
+ if (badCFG)
+ return 0;
+ Block = addStmt(S->getLoopVarStmt());
+ if (badCFG)
+ return 0;
+
+ // This new body block is a successor to our condition block.
+ addSuccessor(ConditionBlock, KnownVal.isFalse() ? 0 : Block);
+ }
+
+ // Link up the condition block with the code that follows the loop (the
+ // false branch).
+ addSuccessor(ConditionBlock, KnownVal.isTrue() ? 0 : LoopSuccessor);
+
+ // Add the initialization statements.
+ Block = createBlock();
+ addStmt(S->getRangeStmt());
+ return addStmt(S->getBeginEndStmt());
+}
+
CFGBlock *CFGBuilder::VisitExprWithCleanups(ExprWithCleanups *E,
AddStmtChoice asc) {
if (BuildOpts.AddImplicitDtors) {
diff --git a/clang/lib/CodeGen/CGStmt.cpp b/clang/lib/CodeGen/CGStmt.cpp
index e72d5c73f58..7a1ce19b07c 100644
--- a/clang/lib/CodeGen/CGStmt.cpp
+++ b/clang/lib/CodeGen/CGStmt.cpp
@@ -153,6 +153,9 @@ void CodeGenFunction::EmitStmt(const Stmt *S) {
case Stmt::CXXTryStmtClass:
EmitCXXTryStmt(cast<CXXTryStmt>(*S));
break;
+ case Stmt::CXXForRangeStmtClass:
+ EmitCXXForRangeStmt(cast<CXXForRangeStmt>(*S));
+ break;
}
}
@@ -636,6 +639,80 @@ void CodeGenFunction::EmitForStmt(const ForStmt &S) {
EmitBlock(LoopExit.getBlock(), true);
}
+void CodeGenFunction::EmitCXXForRangeStmt(const CXXForRangeStmt &S) {
+ JumpDest LoopExit = getJumpDestInCurrentScope("for.end");
+
+ RunCleanupsScope ForScope(*this);
+
+ CGDebugInfo *DI = getDebugInfo();
+ if (DI) {
+ DI->setLocation(S.getSourceRange().getBegin());
+ DI->EmitRegionStart(Builder);
+ }
+
+ // Evaluate the first pieces before the loop.
+ EmitStmt(S.getRangeStmt());
+ EmitStmt(S.getBeginEndStmt());
+
+ // Start the loop with a block that tests the condition.
+ // If there's an increment, the continue scope will be overwritten
+ // later.
+ llvm::BasicBlock *CondBlock = createBasicBlock("for.cond");
+ EmitBlock(CondBlock);
+
+ // If there are any cleanups between here and the loop-exit scope,
+ // create a block to stage a loop exit along.
+ llvm::BasicBlock *ExitBlock = LoopExit.getBlock();
+ if (ForScope.requiresCleanups())
+ ExitBlock = createBasicBlock("for.cond.cleanup");
+
+ // The loop body, consisting of the specified body and the loop variable.
+ llvm::BasicBlock *ForBody = createBasicBlock("for.body");
+
+ // The body is executed if the expression, contextually converted
+ // to bool, is true.
+ llvm::Value *BoolCondVal = EvaluateExprAsBool(S.getCond());
+ Builder.CreateCondBr(BoolCondVal, ForBody, ExitBlock);
+
+ if (ExitBlock != LoopExit.getBlock()) {
+ EmitBlock(ExitBlock);
+ EmitBranchThroughCleanup(LoopExit);
+ }
+
+ EmitBlock(ForBody);
+
+ // Create a block for the increment. In case of a 'continue', we jump there.
+ JumpDest Continue = getJumpDestInCurrentScope("for.inc");
+
+ // Store the blocks to use for break and continue.
+ BreakContinueStack.push_back(BreakContinue(LoopExit, Continue));
+
+ {
+ // Create a separate cleanup scope for the loop variable and body.
+ RunCleanupsScope BodyScope(*this);
+ EmitStmt(S.getLoopVarStmt());
+ EmitStmt(S.getBody());
+ }
+
+ // If there is an increment, emit it next.
+ EmitBlock(Continue.getBlock());
+ EmitStmt(S.getInc());
+
+ BreakContinueStack.pop_back();
+
+ EmitBranch(CondBlock);
+
+ ForScope.ForceCleanup();
+
+ if (DI) {
+ DI->setLocation(S.getSourceRange().getEnd());
+ DI->EmitRegionEnd(Builder);
+ }
+
+ // Emit the fall-through block.
+ EmitBlock(LoopExit.getBlock(), true);
+}
+
void CodeGenFunction::EmitReturnOfRValue(RValue RV, QualType Ty) {
if (RV.isScalar()) {
Builder.CreateStore(RV.getScalarVal(), ReturnValue);
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index f3b00e33700..d53da9f3419 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -42,6 +42,7 @@ namespace clang {
class APValue;
class ASTContext;
class CXXDestructorDecl;
+ class CXXForRangeStmt;
class CXXTryStmt;
class Decl;
class LabelDecl;
@@ -1694,6 +1695,7 @@ public:
void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false);
void EmitCXXTryStmt(const CXXTryStmt &S);
+ void EmitCXXForRangeStmt(const CXXForRangeStmt &S);
//===--------------------------------------------------------------------===//
// LValue Expression Emission
diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
index 8674485d5f8..5e6c51c1ee9 100644
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -705,13 +705,21 @@ Parser::DeclGroupPtrTy Parser::ParseDeclaration(StmtVector &Stmts,
///[C90/C++]init-declarator-list ';' [TODO]
/// [OMP] threadprivate-directive [TODO]
///
+/// for-range-declaration: [C++0x 6.5p1: stmt.ranged]
+/// attribute-specifier-seq[opt] type-specifier-seq declarator
+///
/// If RequireSemi is false, this does not check for a ';' at the end of the
/// declaration. If it is true, it checks for and eats it.
+///
+/// If FRI is non-null, we might be parsing a for-range-declaration instead
+/// of a simple-declaration. If we find that we are, we also parse the
+/// for-range-initializer, and place it here.
Parser::DeclGroupPtrTy Parser::ParseSimpleDeclaration(StmtVector &Stmts,
unsigned Context,
SourceLocation &DeclEnd,
ParsedAttributes &attrs,
- bool RequireSemi) {
+ bool RequireSemi,
+ ForRangeInit *FRI) {
// Parse the common declaration-specifiers piece.
ParsingDeclSpec DS(*this);
DS.takeAttributesFrom(attrs);
@@ -731,7 +739,7 @@ Parser::DeclGroupPtrTy Parser::ParseSimpleDeclaration(StmtVector &Stmts,
return Actions.ConvertDeclToDeclGroup(TheDecl);
}
- return ParseDeclGroup(DS, Context, /*FunctionDefs=*/ false, &DeclEnd);
+ return ParseDeclGroup(DS, Context, /*FunctionDefs=*/ false, &DeclEnd, FRI);
}
/// ParseDeclGroup - Having concluded that this is either a function
@@ -740,7 +748,8 @@ Parser::DeclGroupPtrTy Parser::ParseSimpleDeclaration(StmtVector &Stmts,
Parser::DeclGroupPtrTy Parser::ParseDeclGroup(ParsingDeclSpec &DS,
unsigned Context,
bool AllowFunctionDefinitions,
- SourceLocation *DeclEnd) {
+ SourceLocation *DeclEnd,
+ ForRangeInit *FRI) {
// Parse the first declarator.
ParsingDeclarator D(*this, DS, static_cast<Declarator::TheContext>(Context));
ParseDeclarator(D);
@@ -786,8 +795,24 @@ Parser::DeclGroupPtrTy Parser::ParseDeclGroup(ParsingDeclSpec &DS,
}
}
+ if (ParseAttributesAfterDeclarator(D))
+ return DeclGroupPtrTy();
+
+ // C++0x [stmt.iter]p1: Check if we have a for-range-declarator. If so, we
+ // must parse and analyze the for-range-initializer before the declaration is
+ // analyzed.
+ if (FRI && Tok.is(tok::colon)) {
+ FRI->ColonLoc = ConsumeToken();
+ // FIXME: handle braced-init-list here.
+ FRI->RangeExpr = ParseExpression();
+ Decl *ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
+ Actions.ActOnCXXForRangeDecl(ThisDecl);
+ Actions.FinalizeDeclaration(ThisDecl);
+ return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, &ThisDecl, 1);
+ }
+
llvm::SmallVector<Decl *, 8> DeclsInGroup;
- Decl *FirstDecl = ParseDeclarationAfterDeclarator(D);
+ Decl *FirstDecl = ParseDeclarationAfterDeclaratorAndAttributes(D);
D.complete(FirstDecl);
if (FirstDecl)
DeclsInGroup.push_back(FirstDecl);
@@ -841,6 +866,26 @@ Parser::DeclGroupPtrTy Parser::ParseDeclGroup(ParsingDeclSpec &DS,
DeclsInGroup.size());
}
+/// Parse an optional simple-asm-expr and attributes, and attach them to a
+/// declarator. Returns true on an error.
+bool Parser::ParseAttributesAfterDeclarator(Declarator &D) {
+ // If a simple-asm-expr is present, parse it.
+ if (Tok.is(tok::kw_asm)) {
+ SourceLocation Loc;
+ ExprResult AsmLabel(ParseSimpleAsm(&Loc));
+ if (AsmLabel.isInvalid()) {
+ SkipUntil(tok::semi, true, true);
+ return true;
+ }
+
+ D.setAsmLabel(AsmLabel.release());
+ D.SetRangeEnd(Loc);
+ }
+
+ MaybeParseGNUAttributes(D);
+ return false;
+}
+
/// \brief Parse 'declaration' after parsing 'declaration-specifiers
/// declarator'. This method parses the remainder of the declaration
/// (including any attributes or initializer, among other things) and
@@ -864,21 +909,14 @@ Parser::DeclGroupPtrTy Parser::ParseDeclGroup(ParsingDeclSpec &DS,
///
Decl *Parser::ParseDeclarationAfterDeclarator(Declarator &D,
const ParsedTemplateInfo &TemplateInfo) {
- // If a simple-asm-expr is present, parse it.
- if (Tok.is(tok::kw_asm)) {
- SourceLocation Loc;
- ExprResult AsmLabel(ParseSimpleAsm(&Loc));
- if (AsmLabel.isInvalid()) {
- SkipUntil(tok::semi, true, true);
- return 0;
- }
+ if (ParseAttributesAfterDeclarator(D))
+ return 0;
- D.setAsmLabel(AsmLabel.release());
- D.SetRangeEnd(Loc);
- }
-
- MaybeParseGNUAttributes(D);
+ return ParseDeclarationAfterDeclaratorAndAttributes(D, TemplateInfo);
+}
+Decl *Parser::ParseDeclarationAfterDeclaratorAndAttributes(Declarator &D,
+ const ParsedTemplateInfo &TemplateInfo) {
// Inform the current actions module that we just parsed this declarator.
Decl *ThisDecl = 0;
switch (TemplateInfo.Kind) {
diff --git a/clang/lib/Parse/ParseStmt.cpp b/clang/lib/Parse/ParseStmt.cpp
index 8ffd6e921b2..d70a745314e 100644
--- a/clang/lib/Parse/ParseStmt.cpp
+++ b/clang/lib/Parse/ParseStmt.cpp
@@ -977,6 +977,7 @@ StmtResult Parser::ParseDoStatement(ParsedAttributes &attrs) {
/// 'for' '(' declaration expr[opt] ';' expr[opt] ')' statement
/// [C++] 'for' '(' for-init-statement condition[opt] ';' expression[opt] ')'
/// [C++] statement
+/// [C++0x] 'for' '(' for-range-declaration : for-range-initializer ) statement
/// [OBJC2] 'for' '(' declaration 'in' expr ')' statement
/// [OBJC2] 'for' '(' expr 'in' expr ')' statement
///
@@ -984,6 +985,11 @@ StmtResult Parser::ParseDoStatement(ParsedAttributes &attrs) {
/// [C++] expression-statement
/// [C++] simple-declaration
///
+/// [C++0x] for-range-declaration:
+/// [C++0x] attribute-specifier-seq[opt] type-specifier-seq declarator
+/// [C++0x] for-range-initializer:
+/// [C++0x] expression
+/// [C++0x] braced-init-list [TODO]
StmtResult Parser::ParseForStatement(ParsedAttributes &attrs) {
// FIXME: Use attributes?
@@ -1025,11 +1031,12 @@ StmtResult Parser::ParseForStatement(ParsedAttributes &attrs) {
SourceLocation LParenLoc = ConsumeParen();
ExprResult Value;
- bool ForEach = false;
+ bool ForEach = false, ForRange = false;
StmtResult FirstPart;
bool SecondPartIsInvalid = false;
FullExprArg SecondPart(Actions);
ExprResult Collection;
+ ForRangeInit ForRangeInit;
FullExprArg ThirdPart(Actions);
Decl *SecondVar = 0;
@@ -1052,13 +1059,21 @@ StmtResult Parser::ParseForStatement(ParsedAttributes &attrs) {
ParsedAttributesWithRange attrs(AttrFactory);
MaybeParseCXX0XAttributes(attrs);
+ // In C++0x, "for (T NS:a" might not be a typo for ::
+ bool MightBeForRangeStmt = getLang().CPlusPlus;
+ ColonProtectionRAIIObject ColonProtection(*this, MightBeForRangeStmt);
+
SourceLocation DeclStart = Tok.getLocation(), DeclEnd;
StmtVector Stmts(Actions);
DeclGroupPtrTy DG = ParseSimpleDeclaration(Stmts, Declarator::ForContext,
- DeclEnd, attrs, false);
+ DeclEnd, attrs, false,
+ MightBeForRangeStmt ?
+ &ForRangeInit : 0);
FirstPart = Actions.ActOnDeclStmt(DG, DeclStart, Tok.getLocation());
- if (Tok.is(tok::semi)) { // for (int x = 4;
+ if (ForRangeInit.ParsedForRangeDecl()) {
+ ForRange = true;
+ } else if (Tok.is(tok::semi)) { // for (int x = 4;
ConsumeToken();
} else if ((ForEach = isTokIdentifier_in())) {
Actions.ActOnForEachDeclStmt(DG);
@@ -1107,7 +1122,7 @@ StmtResult Parser::ParseForStatement(ParsedAttributes &attrs) {
}
}
}
- if (!ForEach) {
+ if (!ForEach && !ForRange) {
assert(!SecondPart.get() && "Shouldn't have a second expression yet.");
// Parse the second part of the for specifier.
if (Tok.is(tok::semi)) { // for (...;;
@@ -1149,6 +1164,17 @@ StmtResult Parser::ParseForStatement(ParsedAttributes &attrs) {
// Match the ')'.
SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc);
+ // We need to perform most of the semantic analysis for a C++0x for-range
+ // statememt before parsing the body, in order to be able to deduce the type
+ // of an auto-typed loop variable.
+ StmtResult ForRangeStmt;
+ if (ForRange)
+ ForRangeStmt = Actions.ActOnCXXForRangeStmt(ForLoc, LParenLoc,
+ FirstPart.take(),
+ ForRangeInit.ColonLoc,
+ ForRangeInit.RangeExpr.get(),
+ RParenLoc);
+
// C99 6.8.5p5 - In C99, the body of the if statement is a scope, even if
// there is no compound stmt. C90 does not have this clause. We only do this
// if the body isn't a compound statement to avoid push/pop in common cases.
@@ -1175,15 +1201,19 @@ StmtResult Parser::ParseForStatement(ParsedAttributes &attrs) {
if (Body.isInvalid())
return StmtError();
- if (!ForEach)
- return Actions.ActOnForStmt(ForLoc, LParenLoc, FirstPart.take(), SecondPart,
- SecondVar, ThirdPart, RParenLoc, Body.take());
+ if (ForEach)
+ // FIXME: It isn't clear how to communicate the late destruction of
+ // C++ temporaries used to create the collection.
+ return Actions.ActOnObjCForCollectionStmt(ForLoc, LParenLoc,
+ FirstPart.take(),
+ Collection.take(), RParenLoc,
+ Body.take());
+
+ if (ForRange)
+ return Actions.FinishCXXForRangeStmt(ForRangeStmt.take(), Body.take());
- // FIXME: It isn't clear how to communicate the late destruction of
- // C++ temporaries used to create the collection.
- return Actions.ActOnObjCForCollectionStmt(ForLoc, LParenLoc, FirstPart.take(),
- Collection.take(), RParenLoc,
- Body.take());
+ return Actions.ActOnForStmt(ForLoc, LParenLoc, FirstPart.take(), SecondPart,
+ SecondVar, ThirdPart, RParenLoc, Body.take());
}
/// ParseGotoStatement
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 29174245816..7c32a381df2 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -5247,6 +5247,47 @@ void Sema::ActOnUninitializedDecl(Decl *RealDecl,
}
}
+void Sema::ActOnCXXForRangeDecl(Decl *D) {
+ VarDecl *VD = dyn_cast<VarDecl>(D);
+ if (!VD) {
+ Diag(D->getLocation(), diag::err_for_range_decl_must_be_var);
+ D->setInvalidDecl();
+ return;
+ }
+
+ VD->setCXXForRangeDecl(true);
+
+ // for-range-declaration cannot be given a storage class specifier.
+ int Error = -1;
+ switch (VD->getStorageClassAsWritten()) {
+ case SC_None:
+ break;
+ case SC_Extern:
+ Error = 0;
+ break;
+ case SC_Static:
+ Error = 1;
+ break;
+ case SC_PrivateExtern:
+ Error = 2;
+ break;
+ case SC_Auto:
+ Error = 3;
+ break;
+ case SC_Register:
+ Error = 4;
+ break;
+ }
+ // FIXME: constexpr isn't allowed here.
+ //if (DS.isConstexprSpecified())
+ // Error = 5;
+ if (Error != -1) {
+ Diag(VD->getOuterLocStart(), diag::err_for_range_storage_class)
+ << VD->getDeclName() << Error;
+ D->setInvalidDecl();
+ }
+}
+
void Sema::CheckCompleteVariableDeclaration(VarDecl *var) {
if (var->isInvalidDecl()) return;
diff --git a/clang/lib/Sema/SemaLookup.cpp b/clang/lib/Sema/SemaLookup.cpp
index fe94224a6e6..437898775a8 100644
--- a/clang/lib/Sema/SemaLookup.cpp
+++ b/clang/lib/Sema/SemaLookup.cpp
@@ -2205,7 +2205,8 @@ void ADLResult::insert(NamedDecl *New) {
void Sema::ArgumentDependentLookup(DeclarationName Name, bool Operator,
Expr **Args, unsigned NumArgs,
- ADLResult &Result) {
+ ADLResult &Result,
+ bool StdNamespaceIsAssociated) {
// Find all of the associated namespaces and classes based on the
// arguments we have.
AssociatedNamespaceSet AssociatedNamespaces;
@@ -2213,6 +2214,8 @@ void Sema::ArgumentDependentLookup(DeclarationName Name, bool Operator,
FindAssociatedClassesAndNamespaces(Args, NumArgs,
AssociatedNamespaces,
AssociatedClasses);
+ if (StdNamespaceIsAssociated && StdNamespace)
+ AssociatedNamespaces.insert(getStdNamespace());
QualType T1, T2;
if (Operator) {
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index 25e25a2139d..57338f255ce 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -6152,7 +6152,8 @@ Sema::AddArgumentDependentLookupCandidates(DeclarationName Name,
Expr **Args, unsigned NumArgs,
TemplateArgumentListInfo *ExplicitTemplateArgs,
OverloadCandidateSet& CandidateSet,
- bool PartialOverloading) {
+ bool PartialOverloading,
+ bool StdNamespaceIsAssociated) {
ADLResult Fns;
// FIXME: This approach for uniquing ADL results (and removing
@@ -6163,7 +6164,8 @@ Sema::AddArgumentDependentLookupCandidates(DeclarationName Name,
// we supposed to consider on ADL candidates, anyway?
// FIXME: Pass in the explicit template arguments?
- ArgumentDependentLookup(Name, Operator, Args, NumArgs, Fns);
+ ArgumentDependentLookup(Name, Operator, Args, NumArgs, Fns,
+ StdNamespaceIsAssociated);
// Erase all of the candidates we already knew about.
for (OverloadCandidateSet::iterator Cand = CandidateSet.begin(),
@@ -7693,7 +7695,8 @@ void Sema::AddOverloadedCallCandidates(UnresolvedLookupExpr *ULE,
Args, NumArgs,
ExplicitTemplateArgs,
CandidateSet,
- PartialOverloading);
+ PartialOverloading,
+ ULE->isStdAssociatedNamespace());
}
/// Attempts to recover from a call where no functions were found.
@@ -7772,7 +7775,9 @@ Sema::BuildOverloadedCallExpr(Scope *S, Expr *Fn, UnresolvedLookupExpr *ULE,
// We don't perform ADL in C.
assert(getLangOptions().CPlusPlus && "ADL enabled in C");
- }
+ } else
+ assert(!ULE->isStdAssociatedNamespace() &&
+ "std is associated namespace but not doing ADL");
#endif
OverloadCandidateSet CandidateSet(Fn->getExprLoc());
diff --git a/clang/lib/Sema/SemaStmt.cpp b/clang/lib/Sema/SemaStmt.cpp
index e957a4b93f8..407618219fb 100644
--- a/clang/lib/Sema/SemaStmt.cpp
+++ b/clang/lib/Sema/SemaStmt.cpp
@@ -15,6 +15,7 @@
#include "clang/Sema/Scope.h"
#include "clang/Sema/ScopeInfo.h"
#include "clang/Sema/Initialization.h"
+#include "clang/Sema/Lookup.h"
#include "clang/AST/APValue.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclObjC.h"
@@ -1013,6 +1014,387 @@ Sema::ActOnObjCForCollectionStmt(SourceLocation ForLoc,
ForLoc, RParenLoc));
}
+namespace {
+
+enum BeginEndFunction {
+ BEF_begin,
+ BEF_end
+};
+
+/// Build a variable declaration for a for-range statement.
+static VarDecl *BuildForRangeVarDecl(Sema &SemaRef, SourceLocation Loc,
+ QualType Type, const char *Name) {
+ DeclContext *DC = SemaRef.CurContext;
+ IdentifierInfo *II = &SemaRef.PP.getIdentifierTable().get(Name);
+ TypeSourceInfo *TInfo = SemaRef.Context.getTrivialTypeSourceInfo(Type, Loc);
+ VarDecl *Decl = VarDecl::Create(SemaRef.Context, DC, Loc, Loc, II, Type,
+ TInfo, SC_Auto, SC_None);
+ return Decl;
+}
+
+/// Finish building a variable declaration for a for-range statement.
+/// \return true if an error occurs.
+static bool FinishForRangeVarDecl(Sema &SemaRef, VarDecl *Decl, Expr *Init,
+ SourceLocation Loc, int diag) {
+ // Deduce the type for the iterator variable now rather than leaving it to
+ // AddInitializerToDecl, so we can produce a more suitable diagnostic.
+ TypeSourceInfo *InitTSI = 0;
+ if (Init->getType()->isVoidType() ||
+ !SemaRef.DeduceAutoType(Decl->getTypeSourceInfo(), Init, InitTSI))
+ SemaRef.Diag(Loc, diag) << Init->getType();
+ if (!InitTSI) {
+ Decl->setInvalidDecl();
+ return true;
+ }
+ Decl->setTypeSourceInfo(InitTSI);
+ Decl->setType(InitTSI->getType());
+
+ SemaRef.AddInitializerToDecl(Decl, Init, /*DirectInit=*/false,
+ /*TypeMayContainAuto=*/false);
+ SemaRef.FinalizeDeclaration(Decl);
+ return false;
+}
+
+/// Produce a note indicating which begin/end function was implicitly called
+/// by a C++0x for-range statement. This is often not obvious from the code,
+/// nor from the diagnostics produced when analysing the implicit expressions
+/// required in a for-range statement.
+void NoteForRangeBeginEndFunction(Sema &SemaRef, Expr *E,
+ BeginEndFunction BEF) {
+ CallExpr *CE = dyn_cast<CallExpr>(E);
+ if (!CE)
+ return;
+ FunctionDecl *D = dyn_cast<FunctionDecl>(CE->getCalleeDecl());
+ if (!D)
+ return;
+ SourceLocation Loc = D->getLocation();
+
+ std::string Description;
+ bool IsTemplate = false;
+ if (FunctionTemplateDecl *FunTmpl = D->getPrimaryTemplate()) {
+ Description = SemaRef.getTemplateArgumentBindingsText(
+ FunTmpl->getTemplateParameters(), *D->getTemplateSpecializationArgs());
+ IsTemplate = true;
+ }
+
+ SemaRef.Diag(Loc, diag::note_for_range_begin_end)
+ << BEF << IsTemplate << Description << E->getType();
+}
+
+/// Build a call to 'begin' or 'end' for a C++0x for-range statement. If the
+/// given LookupResult is non-empty, it is assumed to describe a member which
+/// will be invoked. Otherwise, the function will be found via argument
+/// dependent lookup.
+static ExprResult BuildForRangeBeginEndCall(Sema &SemaRef, Scope *S,
+ SourceLocation Loc,
+ VarDecl *Decl,
+ BeginEndFunction BEF,
+ const DeclarationNameInfo &NameInfo,
+ LookupResult &MemberLookup,
+ Expr *Range) {
+ ExprResult CallExpr;
+ if (!MemberLookup.empty()) {
+ ExprResult MemberRef =
+ SemaRef.BuildMemberReferenceExpr(Range, Range->getType(), Loc,
+ /*IsPtr=*/false, CXXScopeSpec(),
+ /*Qualifier=*/0, MemberLookup,
+ /*TemplateArgs=*/0);
+ if (MemberRef.isInvalid())
+ return ExprError();
+ CallExpr = SemaRef.ActOnCallExpr(S, MemberRef.get(), Loc, MultiExprArg(),
+ Loc, 0);
+ if (CallExpr.isInvalid())
+ return ExprError();
+ } else {
+ UnresolvedSet<0> FoundNames;
+ // C++0x [stmt.ranged]p1: For the purposes of this name lookup, namespace
+ // std is an associated namespace.
+ UnresolvedLookupExpr *Fn =
+ UnresolvedLookupExpr::Create(SemaRef.Context, /*NamingClass=*/0,
+ NestedNameSpecifierLoc(), NameInfo,
+ /*NeedsADL=*/true, /*Overloaded=*/false,
+ FoundNames.begin(), FoundNames.end(),
+ /*LookInStdNamespace=*/true);
+ CallExpr = SemaRef.BuildOverloadedCallExpr(S, Fn, Fn, Loc, &Range, 1, Loc,
+ 0);
+ if (CallExpr.isInvalid()) {
+ SemaRef.Diag(Range->getLocStart(), diag::note_for_range_type)
+ << Range->getType();
+ return ExprError();
+ }
+ }
+ if (FinishForRangeVarDecl(SemaRef, Decl, CallExpr.get(), Loc,
+ diag::err_for_range_iter_deduction_failure)) {
+ NoteForRangeBeginEndFunction(SemaRef, CallExpr.get(), BEF);
+ return ExprError();
+ }
+ return CallExpr;
+}
+
+}
+
+/// ActOnCXXForRangeStmt - Check and build a C++0x for-range statement.
+///
+/// C++0x [stmt.ranged]:
+/// A range-based for statement is equivalent to
+///
+/// {
+/// auto && __range = range-init;
+/// for ( auto __begin = begin-expr,
+/// __end = end-expr;
+/// __begin != __end;
+/// ++__begin ) {
+/// for-range-declaration = *__begin;
+/// statement
+/// }
+/// }
+///
+/// The body of the loop is not available yet, since it cannot be analysed until
+/// we have determined the type of the for-range-declaration.
+StmtResult
+Sema::ActOnCXXForRangeStmt(SourceLocation ForLoc, SourceLocation LParenLoc,
+ Stmt *First, SourceLocation ColonLoc, Expr *Range,
+ SourceLocation RParenLoc) {
+ if (!First || !Range)
+ return StmtError();
+
+ DeclStmt *DS = dyn_cast<DeclStmt>(First);
+ assert(DS && "first part of for range not a decl stmt");
+
+ if (!DS->isSingleDecl()) {
+ Diag(DS->getStartLoc(), diag::err_type_defined_in_for_range);
+ return StmtError();
+ }
+ if (DS->getSingleDecl()->isInvalidDecl())
+ return StmtError();
+
+ if (DiagnoseUnexpandedParameterPack(Range, UPPC_Expression))
+ return StmtError();
+
+ // Build auto && __range = range-init
+ SourceLocation RangeLoc = Range->getLocStart();
+ VarDecl *RangeVar = BuildForRangeVarDecl(*this, RangeLoc,
+ Context.getAutoRRefDeductType(),
+ "__range");
+ if (FinishForRangeVarDecl(*this, RangeVar, Range, RangeLoc,
+ diag::err_for_range_deduction_failure))
+ return StmtError();
+
+ // Claim the type doesn't contain auto: we've already done the checking.
+ DeclGroupPtrTy RangeGroup =
+ BuildDeclaratorGroup((Decl**)&RangeVar, 1, /*TypeMayContainAuto=*/false);
+ StmtResult RangeDecl = ActOnDeclStmt(RangeGroup, RangeLoc, RangeLoc);
+ if (RangeDecl.isInvalid())
+ return StmtError();
+
+ return BuildCXXForRangeStmt(ForLoc, ColonLoc, RangeDecl.get(),
+ /*BeginEndDecl=*/0, /*Cond=*/0, /*Inc=*/0, DS,
+ RParenLoc);
+}
+
+/// BuildCXXForRangeStmt - Build or instantiate a C++0x for-range statement.
+StmtResult
+Sema::BuildCXXForRangeStmt(SourceLocation ForLoc, SourceLocation ColonLoc,
+ Stmt *RangeDecl, Stmt *BeginEnd, Expr *Cond,
+ Expr *Inc, Stmt *LoopVarDecl,
+ SourceLocation RParenLoc) {
+ Scope *S = getCurScope();
+
+ DeclStmt *RangeDS = cast<DeclStmt>(RangeDecl);
+ VarDecl *RangeVar = cast<VarDecl>(RangeDS->getSingleDecl());
+ QualType RangeVarType = RangeVar->getType();
+
+ DeclStmt *LoopVarDS = cast<DeclStmt>(LoopVarDecl);
+ VarDecl *LoopVar = cast<VarDecl>(LoopVarDS->getSingleDecl());
+
+ StmtResult BeginEndDecl = BeginEnd;
+ ExprResult NotEqExpr = Cond, IncrExpr = Inc;
+
+ if (!BeginEndDecl.get() && !RangeVarType->isDependentType()) {
+ SourceLocation RangeLoc = RangeVar->getLocation();
+
+ ExprResult RangeRef = BuildDeclRefExpr(RangeVar,
+ RangeVarType.getNonReferenceType(),
+ VK_LValue, ColonLoc);
+ if (RangeRef.isInvalid())
+ return StmtError();
+
+ QualType AutoType = Context.getAutoDeductType();
+ Expr *Range = RangeVar->getInit();
+ if (!Range)
+ return StmtError();
+ QualType RangeType = Range->getType();
+
+ if (RequireCompleteType(RangeLoc, RangeType,
+ PDiag(diag::err_for_range_incomplete_type)))
+ return StmtError();
+
+ // Build auto __begin = begin-expr, __end = end-expr.
+ VarDecl *BeginVar = BuildForRangeVarDecl(*this, ColonLoc, AutoType,
+ "__begin");
+ VarDecl *EndVar = BuildForRangeVarDecl(*this, ColonLoc, AutoType,
+ "__end");
+
+ // Build begin-expr and end-expr and attach to __begin and __end variables.
+ ExprResult BeginExpr, EndExpr;
+ if (const ArrayType *UnqAT = RangeType->getAsArrayTypeUnsafe()) {
+ // - if _RangeT is an array type, begin-expr and end-expr are __range and
+ // __range + __bound, respectively, where __bound is the array bound. If
+ // _RangeT is an array of unknown size or an array of incomplete type,
+ // the program is ill-formed;
+
+ // begin-expr is __range.
+ BeginExpr = RangeRef;
+ if (FinishForRangeVarDecl(*this, BeginVar, RangeRef.get(), ColonLoc,
+ diag::err_for_range_iter_deduction_failure)) {
+ NoteForRangeBeginEndFunction(*this, BeginExpr.get(), BEF_begin);
+ return StmtError();
+ }
+
+ // Find the array bound.
+ ExprResult BoundExpr;
+ if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(UnqAT))
+ BoundExpr = Owned(IntegerLiteral::Create(Context, CAT->getSize(),
+ Context.IntTy, RangeLoc));
+ else if (const VariableArrayType *VAT =
+ dyn_cast<VariableArrayType>(UnqAT))
+ BoundExpr = VAT->getSizeExpr();
+ else {
+ // Can't be a DependentSizedArrayType or an IncompleteArrayType since
+ // UnqAT is not incomplete and Range is not type-dependent.
+ assert(0 && "Unexpected array type in for-range");
+ return StmtError();
+ }
+
+ // end-expr is __range + __bound.
+ EndExpr = ActOnBinOp(S, ColonLoc, tok::plus, RangeRef.get(),
+ BoundExpr.get());
+ if (EndExpr.isInvalid())
+ return StmtError();
+ if (FinishForRangeVarDecl(*this, EndVar, EndExpr.get(), ColonLoc,
+ diag::err_for_range_iter_deduction_failure)) {
+ NoteForRangeBeginEndFunction(*this, EndExpr.get(), BEF_end);
+ return StmtError();
+ }
+ } else {
+ DeclarationNameInfo BeginNameInfo(&PP.getIdentifierTable().get("begin"),
+ ColonLoc);
+ DeclarationNameInfo EndNameInfo(&PP.getIdentifierTable().get("end"),
+ ColonLoc);
+
+ LookupResult BeginMemberLookup(*this, BeginNameInfo, LookupMemberName);
+ LookupResult EndMemberLookup(*this, EndNameInfo, LookupMemberName);
+
+ if (CXXRecordDecl *D = RangeType->getAsCXXRecordDecl()) {
+ // - if _RangeT is a class type, the unqualified-ids begin and end are
+ // looked up in the scope of class _RangeT as if by class member access
+ // lookup (3.4.5), and if either (or both) finds at least one
+ // declaration, begin-expr and end-expr are __range.begin() and
+ // __range.end(), respectively;
+ LookupQualifiedName(BeginMemberLookup, D);
+ LookupQualifiedName(EndMemberLookup, D);
+
+ if (BeginMemberLookup.empty() != EndMemberLookup.empty()) {
+ Diag(ColonLoc, diag::err_for_range_member_begin_end_mismatch)
+ << RangeType << BeginMemberLookup.empty();
+ return StmtError();
+ }
+ } else {
+ // - otherwise, begin-expr and end-expr are begin(__range) and
+ // end(__range), respectively, where begin and end are looked up with
+ // argument-dependent lookup (3.4.2). For the purposes of this name
+ // lookup, namespace std is an associated namespace.
+ }
+
+ BeginExpr = BuildForRangeBeginEndCall(*this, S, ColonLoc, BeginVar,
+ BEF_begin, BeginNameInfo,
+ BeginMemberLookup, RangeRef.get());
+ if (BeginExpr.isInvalid())
+ return StmtError();
+
+ EndExpr = BuildForRangeBeginEndCall(*this, S, ColonLoc, EndVar,
+ BEF_end, EndNameInfo,
+ EndMemberLookup, RangeRef.get());
+ if (EndExpr.isInvalid())
+ return StmtError();
+ }
+
+ // C++0x [decl.spec.auto]p6: BeginType and EndType must be the same.
+ QualType BeginType = BeginVar->getType(), EndType = EndVar->getType();
+ if (!Context.hasSameType(BeginType, EndType)) {
+ Diag(RangeLoc, diag::err_for_range_begin_end_types_differ)
+ << BeginType << EndType;
+ NoteForRangeBeginEndFunction(*this, BeginExpr.get(), BEF_begin);
+ NoteForRangeBeginEndFunction(*this, EndExpr.get(), BEF_end);
+ }
+
+ Decl *BeginEndDecls[] = { BeginVar, EndVar };
+ // Claim the type doesn't contain auto: we've already done the checking.
+ DeclGroupPtrTy BeginEndGroup =
+ BuildDeclaratorGroup(BeginEndDecls, 2, /*TypeMayContainAuto=*/false);
+ BeginEndDecl = ActOnDeclStmt(BeginEndGroup, ColonLoc, ColonLoc);
+
+ ExprResult BeginRef = BuildDeclRefExpr(BeginVar,
+ BeginType.getNonReferenceType(),
+ VK_LValue, ColonLoc);
+ ExprResult EndRef = BuildDeclRefExpr(EndVar, EndType.getNonReferenceType(),
+ VK_LValue, ColonLoc);
+
+ // Build and check __begin != __end expression.
+ NotEqExpr = ActOnBinOp(S, ColonLoc, tok::exclaimequal,
+ BeginRef.get(), EndRef.get());
+ NotEqExpr = ActOnBooleanCondition(S, ColonLoc, NotEqExpr.get());
+ NotEqExpr = ActOnFinishFullExpr(NotEqExpr.get());
+ if (NotEqExpr.isInvalid()) {
+ NoteForRangeBeginEndFunction(*this, BeginExpr.get(), BEF_begin);
+ if (!Context.hasSameType(BeginType, EndType))
+ NoteForRangeBeginEndFunction(*this, EndExpr.get(), BEF_end);
+ return StmtError();
+ }
+
+ // Build and check ++__begin expression.
+ IncrExpr = ActOnUnaryOp(S, ColonLoc, tok::plusplus, BeginRef.get());
+ IncrExpr = ActOnFinishFullExpr(IncrExpr.get());
+ if (IncrExpr.isInvalid()) {
+ NoteForRangeBeginEndFunction(*this, BeginExpr.get(), BEF_begin);
+ return StmtError();
+ }
+
+ // Build and check *__begin expression.
+ ExprResult DerefExpr = ActOnUnaryOp(S, ColonLoc, tok::star, BeginRef.get());
+ if (DerefExpr.isInvalid()) {
+ NoteForRangeBeginEndFunction(*this, BeginExpr.get(), BEF_begin);
+ return StmtError();
+ }
+
+ // Attach *__begin as initializer for VD.
+ if (!LoopVar->isInvalidDecl()) {
+ AddInitializerToDecl(LoopVar, DerefExpr.get(), /*DirectInit=*/false,
+ /*TypeMayContainAuto=*/true);
+ if (LoopVar->isInvalidDecl())
+ NoteForRangeBeginEndFunction(*this, BeginExpr.get(), BEF_begin);
+ }
+ }
+
+ return Owned(new (Context) CXXForRangeStmt(RangeDS,
+ cast_or_null<DeclStmt>(BeginEndDecl.get()),
+ NotEqExpr.take(), IncrExpr.take(),
+ LoopVarDS, /*Body=*/0, ForLoc,
+ ColonLoc, RParenLoc));
+}
+
+/// FinishCXXForRangeStmt - Attach the body to a C++0x for-range statement.
+/// This is a separate step from ActOnCXXForRangeStmt because analysis of the
+/// body cannot be performed until after the type of the range variable is
+/// determined.
+StmtResult Sema::FinishCXXForRangeStmt(Stmt *S, Stmt *B) {
+ if (!S || !B)
+ return StmtError();
+
+ cast<CXXForRangeStmt>(S)->setBody(B);
+ return S;
+}
+
StmtResult Sema::ActOnGotoStmt(SourceLocation GotoLoc,
SourceLocation LabelLoc,
LabelDecl *TheDecl) {
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index a2d1f871a2f..11b98e0af2a 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -271,6 +271,7 @@ Decl *TemplateDeclInstantiator::VisitVarDecl(VarDecl *D) {
D->getStorageClassAsWritten());
Var->setThreadSpecified(D->isThreadSpecified());
Var->setCXXDirectInitializer(D->hasCXXDirectInitializer());
+ Var->setCXXForRangeDecl(D->isCXXForRangeDecl());
// Substitute the nested name specifier, if any.
if (SubstQualifier(D, Var))
@@ -350,7 +351,8 @@ Decl *TemplateDeclInstantiator::VisitVarDecl(VarDecl *D) {
}
SemaRef.PopExpressionEvaluationContext();
- } else if (!Var->isStaticDataMember() || Var->isOutOfLine())
+ } else if ((!Var->isStaticDataMember() || Var->isOutOfLine()) &&
+ !Var->isCXXForRangeDecl())
SemaRef.ActOnUninitializedDecl(Var, false);
// Diagnose unused local variables.
diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
index a7dc920f848..a639f5f3034 100644
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -1228,6 +1228,28 @@ public:
return getSema().ActOnCXXTryBlock(TryLoc, TryBlock, move(Handlers));
}
+ /// \brief Build a new C++0x range-based for statement.
+ ///
+ /// By default, performs semantic analysis to build the new statement.
+ /// Subclasses may override this routine to provide different behavior.
+ StmtResult RebuildCXXForRangeStmt(SourceLocation ForLoc,
+ SourceLocation ColonLoc,
+ Stmt *Range, Stmt *BeginEnd,
+ Expr *Cond, Expr *Inc,
+ Stmt *LoopVar,
+ SourceLocation RParenLoc) {
+ return getSema().BuildCXXForRangeStmt(ForLoc, ColonLoc, Range, BeginEnd,
+ Cond, Inc, LoopVar, RParenLoc);
+ }
+
+ /// \brief Attach body to a C++0x range-based for statement.
+ ///
+ /// By default, performs semantic analysis to finish the new statement.
+ /// Subclasses may override this routine to provide different behavior.
+ StmtResult FinishCXXForRangeStmt(Stmt *ForRange, Stmt *Body) {
+ return getSema().FinishCXXForRangeStmt(ForRange, Body);
+ }
+
/// \brief Build a new expression that references a declaration.
///
/// By default, performs semantic analysis to build the new expression.
@@ -5352,6 +5374,61 @@ TreeTransform<Derived>::TransformCXXTryStmt(CXXTryStmt *S) {
move_arg(Handlers));
}
+template<typename Derived>
+StmtResult
+TreeTransform<Derived>::TransformCXXForRangeStmt(CXXForRangeStmt *S) {
+ StmtResult Range = getDerived().TransformStmt(S->getRangeStmt());
+ if (Range.isInvalid())
+ return StmtError();
+
+ StmtResult BeginEnd = getDerived().TransformStmt(S->getBeginEndStmt());
+ if (BeginEnd.isInvalid())
+ return StmtError();
+
+ ExprResult Cond = getDerived().TransformExpr(S->getCond());
+ if (Cond.isInvalid())
+ return StmtError();
+
+ ExprResult Inc = getDerived().TransformExpr(S->getInc());
+ if (Inc.isInvalid())
+ return StmtError();
+
+ StmtResult LoopVar = getDerived().TransformStmt(S->getLoopVarStmt());
+ if (LoopVar.isInvalid())
+ return StmtError();
+
+ StmtResult NewStmt = S;
+ if (getDerived().AlwaysRebuild() ||
+ Range.get() != S->getRangeStmt() ||
+ BeginEnd.get() != S->getBeginEndStmt() ||
+ Cond.get() != S->getCond() ||
+ Inc.get() != S->getInc() ||
+ LoopVar.get() != S->getLoopVarStmt())
+ NewStmt = getDerived().RebuildCXXForRangeStmt(S->getForLoc(),
+ S->getColonLoc(), Range.get(),
+ BeginEnd.get(), Cond.get(),
+ Inc.get(), LoopVar.get(),
+ S->getRParenLoc());
+
+ StmtResult Body = getDerived().TransformStmt(S->getBody());
+ if (Body.isInvalid())
+ return StmtError();
+
+ // Body has changed but we didn't rebuild the for-range statement. Rebuild
+ // it now so we have a new statement to attach the body to.
+ if (Body.get() != S->getBody() && NewStmt.get() == S)
+ NewStmt = getDerived().RebuildCXXForRangeStmt(S->getForLoc(),
+ S->getColonLoc(), Range.get(),
+ BeginEnd.get(), Cond.get(),
+ Inc.get(), LoopVar.get(),
+ S->getRParenLoc());
+
+ if (NewStmt.get() == S)
+ return SemaRef.Owned(S);
+
+ return FinishCXXForRangeStmt(NewStmt.get(), Body.get());
+}
+
//===----------------------------------------------------------------------===//
// Expression transformation
//===----------------------------------------------------------------------===//
diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index 8e8a1bd2dc0..a7c3fea7d60 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -2676,6 +2676,11 @@ void ASTReader::InitializeContext(ASTContext &Ctx) {
if (SpecialTypes[SPECIAL_TYPE_INT128_INSTALLED])
Context->setInt128Installed();
+ if (unsigned AutoDeduct = SpecialTypes[SPECIAL_TYPE_AUTO_DEDUCT])
+ Context->AutoDeductTy = GetType(AutoDeduct);
+ if (unsigned AutoRRefDeduct = SpecialTypes[SPECIAL_TYPE_AUTO_RREF_DEDUCT])
+ Context->AutoRRefDeductTy = GetType(AutoRRefDeduct);
+
ReadPragmaDiagnosticMappings(Context->getDiagnostics());
// If there were any CUDA special declarations, deserialize them.
diff --git a/clang/lib/Serialization/ASTReaderDecl.cpp b/clang/lib/Serialization/ASTReaderDecl.cpp
index 60fcc14d611..92b387e21ac 100644
--- a/clang/lib/Serialization/ASTReaderDecl.cpp
+++ b/clang/lib/Serialization/ASTReaderDecl.cpp
@@ -684,6 +684,7 @@ void ASTDeclReader::VisitVarDecl(VarDecl *VD) {
VD->setCXXDirectInitializer(Record[Idx++]);
VD->setExceptionVariable(Record[Idx++]);
VD->setNRVOVariable(Record[Idx++]);
+ VD->setCXXForRangeDecl(Record[Idx++]);
if (Record[Idx++])
VD->setInit(Reader.ReadExpr(F));
diff --git a/clang/lib/Serialization/ASTReaderStmt.cpp b/clang/lib/Serialization/ASTReaderStmt.cpp
index 557cb381954..68591bec3fd 100644
--- a/clang/lib/Serialization/ASTReaderStmt.cpp
+++ b/clang/lib/Serialization/ASTReaderStmt.cpp
@@ -141,6 +141,7 @@ namespace clang {
// C++ Statements
void VisitCXXCatchStmt(CXXCatchStmt *S);
void VisitCXXTryStmt(CXXTryStmt *S);
+ void VisitCXXForRangeStmt(CXXForRangeStmt *);
void VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E);
void VisitCXXConstructExpr(CXXConstructExpr *E);
@@ -999,6 +1000,19 @@ void ASTStmtReader::VisitCXXTryStmt(CXXTryStmt *S) {
S->getStmts()[i + 1] = Reader.ReadSubStmt();
}
+void ASTStmtReader::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
+ VisitStmt(S);
+ S->setForLoc(ReadSourceLocation(Record, Idx));
+ S->setColonLoc(ReadSourceLocation(Record, Idx));
+ S->setRParenLoc(ReadSourceLocation(Record, Idx));
+ S->setRangeStmt(Reader.ReadSubStmt());
+ S->setBeginEndStmt(Reader.ReadSubStmt());
+ S->setCond(Reader.ReadSubExpr());
+ S->setInc(Reader.ReadSubExpr());
+ S->setLoopVarStmt(Reader.ReadSubStmt());
+ S->setBody(Reader.ReadSubStmt());
+}
+
void ASTStmtReader::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
VisitCallExpr(E);
E->setOperator((OverloadedOperatorKind)Record[Idx++]);
@@ -1269,6 +1283,8 @@ void ASTStmtReader::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
void ASTStmtReader::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
VisitOverloadExpr(E);
E->RequiresADL = Record[Idx++];
+ if (E->RequiresADL)
+ E->StdIsAssociatedNamespace = Record[Idx++];
E->Overloaded = Record[Idx++];
E->NamingClass = cast_or_null<CXXRecordDecl>(Reader.GetDecl(Record[Idx++]));
}
@@ -1738,6 +1754,10 @@ Stmt *ASTReader::ReadStmtFromStream(PerFileData &F) {
/*NumHandlers=*/Record[ASTStmtReader::NumStmtFields]);
break;
+ case STMT_CXX_FOR_RANGE:
+ S = new (Context) CXXForRangeStmt(Empty);
+ break;
+
case EXPR_CXX_OPERATOR_CALL:
S = new (Context) CXXOperatorCallExpr(*Context, Empty);
break;
diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp
index 0e925a2691b..85b5326da99 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -2825,6 +2825,8 @@ void ASTWriter::WriteASTCore(Sema &SemaRef, MemorizeStatCalls *StatCalls,
AddTypeRef(Context.ObjCSelRedefinitionType, Record);
AddTypeRef(Context.getRawNSConstantStringType(), Record);
Record.push_back(Context.isInt128Installed());
+ AddTypeRef(Context.AutoDeductTy, Record);
+ AddTypeRef(Context.AutoRRefDeductTy, Record);
Stream.EmitRecord(SPECIAL_TYPES, Record);
// Keep writing types and declarations until all types and
diff --git a/clang/lib/Serialization/ASTWriterDecl.cpp b/clang/lib/Serialization/ASTWriterDecl.cpp
index 95b0c3c4dbf..c74fe176f35 100644
--- a/clang/lib/Serialization/ASTWriterDecl.cpp
+++ b/clang/lib/Serialization/ASTWriterDecl.cpp
@@ -553,6 +553,7 @@ void ASTDeclWriter::VisitVarDecl(VarDecl *D) {
Record.push_back(D->hasCXXDirectInitializer());
Record.push_back(D->isExceptionVariable());
Record.push_back(D->isNRVOVariable());
+ Record.push_back(D->isCXXForRangeDecl());
Record.push_back(D->getInit() ? 1 : 0);
if (D->getInit())
Writer.AddStmt(D->getInit());
@@ -1145,6 +1146,7 @@ void ASTWriter::WriteDeclsBlockAbbrevs() {
Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer
Abv->Add(BitCodeAbbrevOp(0)); // isExceptionVariable
Abv->Add(BitCodeAbbrevOp(0)); // isNRVOVariable
+ Abv->Add(BitCodeAbbrevOp(0)); // isCXXForRangeDecl
Abv->Add(BitCodeAbbrevOp(0)); // HasInit
Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo
// ParmVarDecl
diff --git a/clang/lib/Serialization/ASTWriterStmt.cpp b/clang/lib/Serialization/ASTWriterStmt.cpp
index 875d6629298..9d54bb9b21b 100644
--- a/clang/lib/Serialization/ASTWriterStmt.cpp
+++ b/clang/lib/Serialization/ASTWriterStmt.cpp
@@ -115,6 +115,7 @@ namespace clang {
// C++ Statements
void VisitCXXCatchStmt(CXXCatchStmt *S);
void VisitCXXTryStmt(CXXTryStmt *S);
+ void VisitCXXForRangeStmt(CXXForRangeStmt *);
void VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E);
void VisitCXXMemberCallExpr(CXXMemberCallExpr *E);
@@ -963,6 +964,20 @@ void ASTStmtWriter::VisitCXXTryStmt(CXXTryStmt *S) {
Code = serialization::STMT_CXX_TRY;
}
+void ASTStmtWriter::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
+ VisitStmt(S);
+ Writer.AddSourceLocation(S->getForLoc(), Record);
+ Writer.AddSourceLocation(S->getColonLoc(), Record);
+ Writer.AddSourceLocation(S->getRParenLoc(), Record);
+ Writer.AddStmt(S->getRangeStmt());
+ Writer.AddStmt(S->getBeginEndStmt());
+ Writer.AddStmt(S->getCond());
+ Writer.AddStmt(S->getInc());
+ Writer.AddStmt(S->getLoopVarStmt());
+ Writer.AddStmt(S->getBody());
+ Code = serialization::STMT_CXX_FOR_RANGE;
+}
+
void ASTStmtWriter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
VisitCallExpr(E);
Record.push_back(E->getOperator());
@@ -1267,6 +1282,8 @@ void ASTStmtWriter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
void ASTStmtWriter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
VisitOverloadExpr(E);
Record.push_back(E->requiresADL());
+ if (E->requiresADL())
+ Record.push_back(E->isStdAssociatedNamespace());
Record.push_back(E->isOverloaded());
Writer.AddDeclRef(E->getNamingClass(), Record);
Code = serialization::EXPR_CXX_UNRESOLVED_LOOKUP;
diff --git a/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp b/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
index 9102f23f154..477292f6ff0 100644
--- a/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
+++ b/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
@@ -423,6 +423,7 @@ void ExprEngine::Visit(const Stmt* S, ExplodedNode* Pred,
case Stmt::CXXBindTemporaryExprClass:
case Stmt::CXXCatchStmtClass:
case Stmt::CXXDependentScopeMemberExprClass:
+ case Stmt::CXXForRangeStmtClass:
case Stmt::CXXNullPtrLiteralExprClass:
case Stmt::CXXPseudoDestructorExprClass:
case Stmt::CXXTemporaryObjectExprClass:
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