[C++11] Replacing BlockDecl iterators param_begin() and param_end() with iterator_range params(). Updating all of the usages of the iterators with range-based for loops.

llvm-svn: 203250

clang/include/clang/AST/Decl.h

@@ -3291,6 +3291,8 @@ public:
   unsigned param_size() const { return getNumParams(); }
   typedef ParmVarDecl **param_iterator;
   typedef ParmVarDecl * const *param_const_iterator;
+  typedef llvm::iterator_range<param_iterator> param_range;
+  typedef llvm::iterator_range<param_const_iterator> param_const_range;
 
   // ArrayRef access to formal parameters.
   // FIXME: Should eventual replace iterator access.
@@ -3299,11 +3301,17 @@ public:
   }
 
   bool param_empty() const { return NumParams == 0; }
-  param_iterator param_begin()  { return ParamInfo; }
-  param_iterator param_end()   { return ParamInfo+param_size(); }
+  param_range params() {
+    return param_range(ParamInfo, ParamInfo + param_size());
+  }
+  param_iterator param_begin() { return params().begin(); }
+  param_iterator param_end() { return params().end(); }
 
-  param_const_iterator param_begin() const { return ParamInfo; }
-  param_const_iterator param_end() const   { return ParamInfo+param_size(); }
+  param_const_range params() const {
+    return param_const_range(ParamInfo, ParamInfo + param_size());
+  }
+  param_const_iterator param_begin() const { return params().begin(); }
+  param_const_iterator param_end() const { return params().end(); }
 
   unsigned getNumParams() const { return NumParams; }
   const ParmVarDecl *getParamDecl(unsigned i) const {

clang/lib/AST/ASTContext.cpp

@@ -4804,9 +4804,8 @@ std::string ASTContext::getObjCEncodingForBlock(const BlockExpr *Expr) const {
   SourceLocation Loc;
   CharUnits PtrSize = getTypeSizeInChars(VoidPtrTy);
   CharUnits ParmOffset = PtrSize;
-  for (BlockDecl::param_const_iterator PI = Decl->param_begin(),
-       E = Decl->param_end(); PI != E; ++PI) {
-    QualType PType = (*PI)->getType();
+  for (auto PI : Decl->params()) {
+    QualType PType = PI->getType();
     CharUnits sz = getObjCEncodingTypeSize(PType);
     if (sz.isZero())
       continue;
@@ -4820,9 +4819,7 @@ std::string ASTContext::getObjCEncodingForBlock(const BlockExpr *Expr) const {
   
   // Argument types.
   ParmOffset = PtrSize;
-  for (BlockDecl::param_const_iterator PI = Decl->param_begin(), E =
-       Decl->param_end(); PI != E; ++PI) {
-    ParmVarDecl *PVDecl = *PI;
+  for (auto PVDecl : Decl->params()) {
     QualType PType = PVDecl->getOriginalType(); 
     if (const ArrayType *AT =
           dyn_cast<ArrayType>(PType->getCanonicalTypeInternal())) {

clang/lib/AST/ASTDumper.cpp

@@ -1439,9 +1439,8 @@ void ASTDumper::VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D) {
 }
 
 void ASTDumper::VisitBlockDecl(const BlockDecl *D) {
-  for (BlockDecl::param_const_iterator I = D->param_begin(), E = D->param_end();
-       I != E; ++I)
-    dumpDecl(*I);
+  for (auto I : D->params())
+    dumpDecl(I);
 
   if (D->isVariadic()) {
     IndentScope Indent(*this);

clang/lib/CodeGen/CGBlocks.cpp

@@ -1117,9 +1117,8 @@ CodeGenFunction::GenerateBlockFunction(GlobalDecl GD,
   args.push_back(&selfDecl);
 
   // Now add the rest of the parameters.
-  for (BlockDecl::param_const_iterator i = blockDecl->param_begin(),
-       e = blockDecl->param_end(); i != e; ++i)
-    args.push_back(*i);
+  for (auto i : blockDecl->params())
+    args.push_back(i);
 
   // Create the function declaration.
   const FunctionProtoType *fnType = blockInfo.getBlockExpr()->getFunctionType();

clang/lib/CodeGen/CGClass.cpp

@@ -2163,11 +2163,9 @@ void CodeGenFunction::EmitLambdaBlockInvokeBody() {
   CallArgs.add(RValue::get(ThisPtr), ThisType);
 
   // Add the rest of the parameters.
-  for (BlockDecl::param_const_iterator I = BD->param_begin(),
-       E = BD->param_end(); I != E; ++I) {
-    ParmVarDecl *param = *I;
+  for (auto param : BD->params())
     EmitDelegateCallArg(CallArgs, param, param->getLocStart());
-  }
+
   assert(!Lambda->isGenericLambda() && 
             "generic lambda interconversion to block not implemented");
   EmitForwardingCallToLambda(Lambda->getLambdaCallOperator(), CallArgs);

clang/lib/Sema/SemaExpr.cpp

@@ -10446,15 +10446,14 @@ void Sema::ActOnBlockArguments(SourceLocation CaretLoc, Declarator &ParamInfo,
   ProcessDeclAttributes(CurScope, CurBlock->TheDecl, ParamInfo);
 
   // Put the parameter variables in scope.
-  for (BlockDecl::param_iterator AI = CurBlock->TheDecl->param_begin(),
-         E = CurBlock->TheDecl->param_end(); AI != E; ++AI) {
-    (*AI)->setOwningFunction(CurBlock->TheDecl);
+  for (auto AI : CurBlock->TheDecl->params()) {
+    AI->setOwningFunction(CurBlock->TheDecl);
 
     // If this has an identifier, add it to the scope stack.
-    if ((*AI)->getIdentifier()) {
-      CheckShadow(CurBlock->TheScope, *AI);
+    if (AI->getIdentifier()) {
+      CheckShadow(CurBlock->TheScope, AI);
 
-      PushOnScopeChains(*AI, CurBlock->TheScope);
+      PushOnScopeChains(AI, CurBlock->TheScope);
     }
   }
 }