100 lines
3.6 KiB
C++
100 lines
3.6 KiB
C++
//===- llvm/MC/MCParsedAsmOperand.h - Asm Parser Operand --------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H
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#define LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/SMLoc.h"
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#include <string>
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namespace llvm {
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class raw_ostream;
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/// MCParsedAsmOperand - This abstract class represents a source-level assembly
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/// instruction operand. It should be subclassed by target-specific code. This
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/// base class is used by target-independent clients and is the interface
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/// between parsing an asm instruction and recognizing it.
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class MCParsedAsmOperand {
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/// MCOperandNum - The corresponding MCInst operand number. Only valid when
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/// parsing MS-style inline assembly.
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unsigned MCOperandNum;
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/// Constraint - The constraint on this operand. Only valid when parsing
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/// MS-style inline assembly.
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std::string Constraint;
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protected:
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// This only seems to need to be movable (by ARMOperand) but ARMOperand has
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// lots of members and MSVC doesn't support defaulted move ops, so to avoid
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// that verbosity, just rely on defaulted copy ops. It's only the Constraint
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// string member that would benefit from movement anyway.
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MCParsedAsmOperand() = default;
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MCParsedAsmOperand(const MCParsedAsmOperand &RHS) = default;
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MCParsedAsmOperand &operator=(const MCParsedAsmOperand &) = default;
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public:
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virtual ~MCParsedAsmOperand() = default;
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void setConstraint(StringRef C) { Constraint = C.str(); }
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StringRef getConstraint() { return Constraint; }
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void setMCOperandNum (unsigned OpNum) { MCOperandNum = OpNum; }
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unsigned getMCOperandNum() { return MCOperandNum; }
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virtual StringRef getSymName() { return StringRef(); }
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virtual void *getOpDecl() { return nullptr; }
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/// isToken - Is this a token operand?
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virtual bool isToken() const = 0;
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/// isImm - Is this an immediate operand?
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virtual bool isImm() const = 0;
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/// isReg - Is this a register operand?
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virtual bool isReg() const = 0;
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virtual unsigned getReg() const = 0;
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/// isMem - Is this a memory operand?
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virtual bool isMem() const = 0;
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/// getStartLoc - Get the location of the first token of this operand.
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virtual SMLoc getStartLoc() const = 0;
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/// getEndLoc - Get the location of the last token of this operand.
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virtual SMLoc getEndLoc() const = 0;
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/// needAddressOf - Do we need to emit code to get the address of the
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/// variable/label? Only valid when parsing MS-style inline assembly.
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virtual bool needAddressOf() const { return false; }
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/// isOffsetOfLocal - Do we need to emit code to get the offset of the local
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/// variable, rather than its value? Only valid when parsing MS-style inline
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/// assembly.
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virtual bool isOffsetOfLocal() const { return false; }
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/// getOffsetOfLoc - Get the location of the offset operator.
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virtual SMLoc getOffsetOfLoc() const { return SMLoc(); }
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/// print - Print a debug representation of the operand to the given stream.
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virtual void print(raw_ostream &OS) const = 0;
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/// dump - Print to the debug stream.
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virtual void dump() const;
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};
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//===----------------------------------------------------------------------===//
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// Debugging Support
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inline raw_ostream& operator<<(raw_ostream &OS, const MCParsedAsmOperand &MO) {
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MO.print(OS);
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return OS;
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}
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} // end namespace llvm
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#endif // LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H
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