| //===- llvm/MC/MCParsedAsmOperand.h - Asm Parser Operand --------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H |
| #define LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H |
| |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/Support/SMLoc.h" |
| #include <string> |
| |
| namespace llvm { |
| |
| 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; |
| |
| protected: |
| // This only seems to need to be movable (by ARMOperand) but ARMOperand has |
| // lots of members and MSVC doesn't support defaulted move ops, so to avoid |
| // that verbosity, just rely on defaulted copy ops. It's only the Constraint |
| // string member that would benefit from movement anyway. |
| MCParsedAsmOperand() = default; |
| MCParsedAsmOperand(const MCParsedAsmOperand &RHS) = default; |
| MCParsedAsmOperand &operator=(const MCParsedAsmOperand &) = default; |
| |
| public: |
| virtual ~MCParsedAsmOperand() = default; |
| |
| void setConstraint(StringRef C) { Constraint = C.str(); } |
| StringRef getConstraint() { return Constraint; } |
| |
| void setMCOperandNum (unsigned OpNum) { MCOperandNum = OpNum; } |
| unsigned getMCOperandNum() { return MCOperandNum; } |
| |
| virtual StringRef getSymName() { return StringRef(); } |
| virtual void *getOpDecl() { return nullptr; } |
| |
| /// 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 // LLVM_MC_MCPARSER_MCPARSEDASMOPERAND_H |