/usr/include/clang/AST/APValue.h is in libclang-dev 3.0-6ubuntu3.
This file is owned by root:root, with mode 0o644.
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//
// 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 APValue class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_APVALUE_H
#define LLVM_CLANG_AST_APVALUE_H
#include "clang/Basic/LLVM.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/APFloat.h"
namespace clang {
class CharUnits;
class DiagnosticBuilder;
class Expr;
/// APValue - This class implements a discriminated union of [uninitialized]
/// [APSInt] [APFloat], [Complex APSInt] [Complex APFloat], [Expr + Offset].
class APValue {
typedef llvm::APSInt APSInt;
typedef llvm::APFloat APFloat;
public:
enum ValueKind {
Uninitialized,
Int,
Float,
ComplexInt,
ComplexFloat,
LValue,
Vector
};
private:
ValueKind Kind;
struct ComplexAPSInt {
APSInt Real, Imag;
ComplexAPSInt() : Real(1), Imag(1) {}
};
struct ComplexAPFloat {
APFloat Real, Imag;
ComplexAPFloat() : Real(0.0), Imag(0.0) {}
};
struct Vec {
APValue *Elts;
unsigned NumElts;
Vec() : Elts(0), NumElts(0) {}
~Vec() { delete[] Elts; }
};
enum {
MaxSize = (sizeof(ComplexAPSInt) > sizeof(ComplexAPFloat) ?
sizeof(ComplexAPSInt) : sizeof(ComplexAPFloat))
};
union {
void *Aligner;
char Data[MaxSize];
};
public:
APValue() : Kind(Uninitialized) {}
explicit APValue(const APSInt &I) : Kind(Uninitialized) {
MakeInt(); setInt(I);
}
explicit APValue(const APFloat &F) : Kind(Uninitialized) {
MakeFloat(); setFloat(F);
}
explicit APValue(const APValue *E, unsigned N) : Kind(Uninitialized) {
MakeVector(); setVector(E, N);
}
APValue(const APSInt &R, const APSInt &I) : Kind(Uninitialized) {
MakeComplexInt(); setComplexInt(R, I);
}
APValue(const APFloat &R, const APFloat &I) : Kind(Uninitialized) {
MakeComplexFloat(); setComplexFloat(R, I);
}
APValue(const APValue &RHS) : Kind(Uninitialized) {
*this = RHS;
}
APValue(const Expr* B, const CharUnits &O) : Kind(Uninitialized) {
MakeLValue(); setLValue(B, O);
}
APValue(const Expr* B);
~APValue() {
MakeUninit();
}
ValueKind getKind() const { return Kind; }
bool isUninit() const { return Kind == Uninitialized; }
bool isInt() const { return Kind == Int; }
bool isFloat() const { return Kind == Float; }
bool isComplexInt() const { return Kind == ComplexInt; }
bool isComplexFloat() const { return Kind == ComplexFloat; }
bool isLValue() const { return Kind == LValue; }
bool isVector() const { return Kind == Vector; }
void print(raw_ostream &OS) const;
void dump() const;
APSInt &getInt() {
assert(isInt() && "Invalid accessor");
return *(APSInt*)(char*)Data;
}
const APSInt &getInt() const {
return const_cast<APValue*>(this)->getInt();
}
APFloat &getFloat() {
assert(isFloat() && "Invalid accessor");
return *(APFloat*)(char*)Data;
}
const APFloat &getFloat() const {
return const_cast<APValue*>(this)->getFloat();
}
APValue &getVectorElt(unsigned i) {
assert(isVector() && "Invalid accessor");
return ((Vec*)(char*)Data)->Elts[i];
}
const APValue &getVectorElt(unsigned i) const {
assert(isVector() && "Invalid accessor");
return ((const Vec*)(const char*)Data)->Elts[i];
}
unsigned getVectorLength() const {
assert(isVector() && "Invalid accessor");
return ((const Vec*)(const void *)Data)->NumElts;
}
APSInt &getComplexIntReal() {
assert(isComplexInt() && "Invalid accessor");
return ((ComplexAPSInt*)(char*)Data)->Real;
}
const APSInt &getComplexIntReal() const {
return const_cast<APValue*>(this)->getComplexIntReal();
}
APSInt &getComplexIntImag() {
assert(isComplexInt() && "Invalid accessor");
return ((ComplexAPSInt*)(char*)Data)->Imag;
}
const APSInt &getComplexIntImag() const {
return const_cast<APValue*>(this)->getComplexIntImag();
}
APFloat &getComplexFloatReal() {
assert(isComplexFloat() && "Invalid accessor");
return ((ComplexAPFloat*)(char*)Data)->Real;
}
const APFloat &getComplexFloatReal() const {
return const_cast<APValue*>(this)->getComplexFloatReal();
}
APFloat &getComplexFloatImag() {
assert(isComplexFloat() && "Invalid accessor");
return ((ComplexAPFloat*)(char*)Data)->Imag;
}
const APFloat &getComplexFloatImag() const {
return const_cast<APValue*>(this)->getComplexFloatImag();
}
const Expr* getLValueBase() const;
CharUnits getLValueOffset() const;
void setInt(const APSInt &I) {
assert(isInt() && "Invalid accessor");
*(APSInt*)(char*)Data = I;
}
void setFloat(const APFloat &F) {
assert(isFloat() && "Invalid accessor");
*(APFloat*)(char*)Data = F;
}
void setVector(const APValue *E, unsigned N) {
assert(isVector() && "Invalid accessor");
((Vec*)(char*)Data)->Elts = new APValue[N];
((Vec*)(char*)Data)->NumElts = N;
for (unsigned i = 0; i != N; ++i)
((Vec*)(char*)Data)->Elts[i] = E[i];
}
void setComplexInt(const APSInt &R, const APSInt &I) {
assert(R.getBitWidth() == I.getBitWidth() &&
"Invalid complex int (type mismatch).");
assert(isComplexInt() && "Invalid accessor");
((ComplexAPSInt*)(char*)Data)->Real = R;
((ComplexAPSInt*)(char*)Data)->Imag = I;
}
void setComplexFloat(const APFloat &R, const APFloat &I) {
assert(&R.getSemantics() == &I.getSemantics() &&
"Invalid complex float (type mismatch).");
assert(isComplexFloat() && "Invalid accessor");
((ComplexAPFloat*)(char*)Data)->Real = R;
((ComplexAPFloat*)(char*)Data)->Imag = I;
}
void setLValue(const Expr *B, const CharUnits &O);
const APValue &operator=(const APValue &RHS);
private:
void MakeUninit();
void MakeInt() {
assert(isUninit() && "Bad state change");
new ((void*)Data) APSInt(1);
Kind = Int;
}
void MakeFloat() {
assert(isUninit() && "Bad state change");
new ((void*)(char*)Data) APFloat(0.0);
Kind = Float;
}
void MakeVector() {
assert(isUninit() && "Bad state change");
new ((void*)(char*)Data) Vec();
Kind = Vector;
}
void MakeComplexInt() {
assert(isUninit() && "Bad state change");
new ((void*)(char*)Data) ComplexAPSInt();
Kind = ComplexInt;
}
void MakeComplexFloat() {
assert(isUninit() && "Bad state change");
new ((void*)(char*)Data) ComplexAPFloat();
Kind = ComplexFloat;
}
void MakeLValue();
};
inline raw_ostream &operator<<(raw_ostream &OS, const APValue &V) {
V.print(OS);
return OS;
}
// Writes a concise representation of V to DB, in a single << operation.
const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
const APValue &V);
} // end namespace clang.
#endif
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