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//===--- TypeLoc.cpp - Type Source Info Wrapper -----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the TypeLoc subclasses implementations.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/raw_ostream.h"
#include "clang/AST/TypeLocVisitor.h"
using namespace clang;
//===----------------------------------------------------------------------===//
// TypeLoc Implementation
//===----------------------------------------------------------------------===//
namespace {
class TypeLocRanger : public TypeLocVisitor<TypeLocRanger, SourceRange> {
public:
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
SourceRange Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
return TyLoc.getSourceRange(); \
}
#include "clang/AST/TypeLocNodes.def"
};
}
SourceRange TypeLoc::getSourceRangeImpl(TypeLoc TL) {
if (TL.isNull()) return SourceRange();
return TypeLocRanger().Visit(TL);
}
namespace {
class TypeSizer : public TypeLocVisitor<TypeSizer, unsigned> {
public:
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
unsigned Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
return TyLoc.getFullDataSize(); \
}
#include "clang/AST/TypeLocNodes.def"
};
}
/// \brief Returns the size of the type source info data block.
unsigned TypeLoc::getFullDataSizeForType(QualType Ty) {
if (Ty.isNull()) return 0;
return TypeSizer().Visit(TypeLoc(Ty, 0));
}
namespace {
class NextLoc : public TypeLocVisitor<NextLoc, TypeLoc> {
public:
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
TypeLoc Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
return TyLoc.getNextTypeLoc(); \
}
#include "clang/AST/TypeLocNodes.def"
};
}
/// \brief Get the next TypeLoc pointed by this TypeLoc, e.g for "int*" the
/// TypeLoc is a PointerLoc and next TypeLoc is for "int".
TypeLoc TypeLoc::getNextTypeLocImpl(TypeLoc TL) {
return NextLoc().Visit(TL);
}
namespace {
struct TypeLocInitializer : public TypeLocVisitor<TypeLocInitializer> {
SourceLocation Loc;
TypeLocInitializer(SourceLocation Loc) : Loc(Loc) {}
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
TyLoc.initializeLocal(Loc); \
}
#include "clang/AST/TypeLocNodes.def"
};
}
/// \brief Initializes a type location, and all of its children
/// recursively, as if the entire tree had been written in the
/// given location.
void TypeLoc::initializeImpl(TypeLoc TL, SourceLocation Loc) {
do {
TypeLocInitializer(Loc).Visit(TL);
} while ((TL = TL.getNextTypeLoc()));
}
namespace {
struct TSTChecker : public TypeLocVisitor<TSTChecker, bool> {
// Overload resolution does the real work for us.
static bool isTypeSpec(TypeSpecTypeLoc _) { return true; }
static bool isTypeSpec(TypeLoc _) { return false; }
#define ABSTRACT_TYPELOC(CLASS, PARENT)
#define TYPELOC(CLASS, PARENT) \
bool Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \
return isTypeSpec(TyLoc); \
}
#include "clang/AST/TypeLocNodes.def"
};
}
/// \brief Determines if the given type loc corresponds to a
/// TypeSpecTypeLoc. Since there is not actually a TypeSpecType in
/// the type hierarchy, this is made somewhat complicated.
///
/// There are a lot of types that currently use TypeSpecTypeLoc
/// because it's a convenient base class. Ideally we would not accept
/// those here, but ideally we would have better implementations for
/// them.
bool TypeSpecTypeLoc::classof(const TypeLoc *TL) {
if (TL->getType().hasLocalQualifiers()) return false;
return TSTChecker().Visit(*TL);
}
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