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-//===-EDToken.h - LLVM Enhanced Disassembler --------------------*- C++ -*-===//
-//
-// 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 interface for the Enhanced Disassembly library's token
-// class. The token is responsible for vending information about the token,
-// such as its type and logical value.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef EDToken_
-#define EDToken_
-
-#include "llvm-c/EnhancedDisassembly.h"
-#include "llvm/ADT/StringRef.h"
-
-#include <string>
-#include <vector>
-
-/// EDToken - Encapsulates a single token, which can provide a string
-/// representation of itself or interpret itself in various ways, depending
-/// on the token type.
-struct EDToken {
- enum tokenType {
- kTokenWhitespace,
- kTokenOpcode,
- kTokenLiteral,
- kTokenRegister,
- kTokenPunctuation
- };
-
- /// The parent disassembler
- EDDisassembler &Disassembler;
-
- /// The token's string representation
- llvm::StringRef Str;
- /// The token's string representation, but in a form suitable for export
- std::string PermStr;
- /// The type of the token, as exposed through the external API
- enum tokenType Type;
- /// The type of the token, as recorded by the syntax-specific tokenizer
- uint64_t LocalType;
- /// The operand corresponding to the token, or (unsigned int)-1 if not
- /// part of an operand.
- int OperandID;
-
- /// The sign if the token is a literal (1 if negative, 0 otherwise)
- bool LiteralSign;
- /// The absolute value if the token is a literal
- uint64_t LiteralAbsoluteValue;
- /// The LLVM register ID if the token is a register name
- unsigned RegisterID;
-
- /// Constructor - Initializes an EDToken with the information common to all
- /// tokens
- ///
- /// @arg str - The string corresponding to the token
- /// @arg type - The token's type as exposed through the public API
- /// @arg localType - The token's type as recorded by the tokenizer
- /// @arg disassembler - The disassembler responsible for the token
- EDToken(llvm::StringRef str,
- enum tokenType type,
- uint64_t localType,
- EDDisassembler &disassembler);
-
- /// makeLiteral - Adds the information specific to a literal
- /// @arg sign - The sign of the literal (1 if negative, 0
- /// otherwise)
- ///
- /// @arg absoluteValue - The absolute value of the literal
- void makeLiteral(bool sign, uint64_t absoluteValue);
- /// makeRegister - Adds the information specific to a register
- ///
- /// @arg registerID - The LLVM register ID
- void makeRegister(unsigned registerID);
-
- /// setOperandID - Links the token to a numbered operand
- ///
- /// @arg operandID - The operand ID to link to
- void setOperandID(int operandID);
-
- ~EDToken();
-
- /// type - Returns the public type of the token
- enum tokenType type() const;
- /// localType - Returns the tokenizer-specific type of the token
- uint64_t localType() const;
- /// string - Returns the string representation of the token
- llvm::StringRef string() const;
- /// operandID - Returns the operand ID of the token
- int operandID() const;
-
- /// literalSign - Returns the sign of the token
- /// (1 if negative, 0 if positive or unsigned, -1 if it is not a literal)
- int literalSign() const;
- /// literalAbsoluteValue - Retrieves the absolute value of the token, and
- /// returns -1 if the token is not a literal
- /// @arg value - A reference to a value that is filled in with the absolute
- /// value, if it is valid
- int literalAbsoluteValue(uint64_t &value) const;
- /// registerID - Retrieves the register ID of the token, and returns -1 if the
- /// token is not a register
- ///
- /// @arg registerID - A reference to a value that is filled in with the
- /// register ID, if it is valid
- int registerID(unsigned &registerID) const;
-
- /// tokenize - Tokenizes a string using the platform- and syntax-specific
- /// tokenizer, and returns 0 on success (-1 on failure)
- ///
- /// @arg tokens - A vector that will be filled in with pointers to
- /// allocated tokens
- /// @arg str - The string, as outputted by the AsmPrinter
- /// @arg operandOrder - The order of the operands from the operandFlags array
- /// as they appear in str
- /// @arg disassembler - The disassembler for the desired target and
- // assembly syntax
- static int tokenize(std::vector<EDToken*> &tokens,
- std::string &str,
- const char *operandOrder,
- EDDisassembler &disassembler);
-
- /// getString - Directs a character pointer to the string, returning 0 on
- /// success (-1 on failure)
- /// @arg buf - A reference to a pointer that is set to point to the string.
- /// The string is still owned by the token.
- int getString(const char*& buf);
-};
-
-#endif
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