#ifndef LLVM_DEBUGINFO_DWARFFORMVALUE_H
#define LLVM_DEBUGINFO_DWARFFORMVALUE_H
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/Optional.h"
#include "llvm/Support/DataExtractor.h"
namespace llvm {
class DWARFUnit;
class raw_ostream;
class DWARFFormValue {
public:
enum FormClass {
FC_Unknown,
FC_Address,
FC_Block,
FC_Constant,
FC_String,
FC_Flag,
FC_Reference,
FC_Indirect,
FC_SectionOffset,
FC_Exprloc
};
private:
struct ValueType {
ValueType() : data(NULL) {
uval = 0;
}
union {
uint64_t uval;
int64_t sval;
const char* cstr;
};
const uint8_t* data;
};
uint16_t Form; ValueType Value;
public:
DWARFFormValue(uint16_t Form = 0) : Form(Form) {}
uint16_t getForm() const { return Form; }
bool isFormClass(FormClass FC) const;
void dump(raw_ostream &OS, const DWARFUnit *U) const;
bool extractValue(DataExtractor data, uint32_t *offset_ptr,
const DWARFUnit *u);
bool isInlinedCStr() const {
return Value.data != NULL && Value.data == (const uint8_t*)Value.cstr;
}
Optional<uint64_t> getAsReference(const DWARFUnit *U) const;
Optional<uint64_t> getAsUnsignedConstant() const;
Optional<const char *> getAsCString(const DWARFUnit *U) const;
Optional<uint64_t> getAsAddress(const DWARFUnit *U) const;
Optional<uint64_t> getAsSectionOffset() const;
bool skipValue(DataExtractor debug_info_data, uint32_t *offset_ptr,
const DWARFUnit *u) const;
static bool skipValue(uint16_t form, DataExtractor debug_info_data,
uint32_t *offset_ptr, const DWARFUnit *u);
static ArrayRef<uint8_t> getFixedFormSizes(uint8_t AddrSize,
uint16_t Version);
};
}
#endif