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//===-- llvm/MC/MCParsedAsmOperand.h - Asm Parser Operand -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H
#define LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H
namespace llvm {
class SMLoc;
class raw_ostream;
/// MCParsedAsmOperand - This abstract class represents a source-level assembly
/// instruction operand. It should be subclassed by target-specific code. This
/// base class is used by target-independent clients and is the interface
/// between parsing an asm instruction and recognizing it.
class MCParsedAsmOperand {
/// MCOperandNum - The corresponding MCInst operand number. Only valid when
/// parsing MS-style inline assembly.
unsigned MCOperandNum;
/// Constraint - The constraint on this operand. Only valid when parsing
/// MS-style inline assembly.
std::string Constraint;
public:
MCParsedAsmOperand() {}
virtual ~MCParsedAsmOperand() {}
void setConstraint(StringRef C) { Constraint = C.str(); }
StringRef getConstraint() { return Constraint; }
void setMCOperandNum (unsigned OpNum) { MCOperandNum = OpNum; }
unsigned getMCOperandNum() { return MCOperandNum; }
unsigned getNameLen() {
assert (getStartLoc().isValid() && "Invalid StartLoc!");
assert (getEndLoc().isValid() && "Invalid EndLoc!");
return getEndLoc().getPointer() - getStartLoc().getPointer();
}
StringRef getName() {
return StringRef(getStartLoc().getPointer(), getNameLen());
}
/// isToken - Is this a token operand?
virtual bool isToken() const = 0;
/// isImm - Is this an immediate operand?
virtual bool isImm() const = 0;
/// isReg - Is this a register operand?
virtual bool isReg() const = 0;
virtual unsigned getReg() const = 0;
/// isMem - Is this a memory operand?
virtual bool isMem() const = 0;
/// getStartLoc - Get the location of the first token of this operand.
virtual SMLoc getStartLoc() const = 0;
/// getEndLoc - Get the location of the last token of this operand.
virtual SMLoc getEndLoc() const = 0;
/// needAddressOf - Do we need to emit code to get the address of the
/// variable/label? Only valid when parsing MS-style inline assembly.
virtual bool needAddressOf() const { return false; }
/// isOffsetOf - Do we need to emit code to get the offset of the variable,
/// rather then the value of the variable? Only valid when parsing MS-style
/// inline assembly.
virtual bool isOffsetOf() const { return false; }
/// getOffsetOfLoc - Get the location of the offset operator.
virtual SMLoc getOffsetOfLoc() const { return SMLoc(); }
/// print - Print a debug representation of the operand to the given stream.
virtual void print(raw_ostream &OS) const = 0;
/// dump - Print to the debug stream.
virtual void dump() const;
};
//===----------------------------------------------------------------------===//
// Debugging Support
inline raw_ostream& operator<<(raw_ostream &OS, const MCParsedAsmOperand &MO) {
MO.print(OS);
return OS;
}
} // end namespace llvm.
#endif
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