77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
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//===- AsmLexer.h - Lexer for Assembly Files --------------------*- 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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//
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// This class declares the lexer for assembly files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCPARSER_ASMLEXER_H
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#define LLVM_MC_MCPARSER_ASMLEXER_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/MC/MCParser/MCAsmLexer.h"
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#include <string>
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namespace llvm {
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class MCAsmInfo;
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/// AsmLexer - Lexer class for assembly files.
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class AsmLexer : public MCAsmLexer {
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const MCAsmInfo &MAI;
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const char *CurPtr = nullptr;
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StringRef CurBuf;
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bool IsAtStartOfLine = true;
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bool IsAtStartOfStatement = true;
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bool IsPeeking = false;
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bool EndStatementAtEOF = true;
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protected:
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/// LexToken - Read the next token and return its code.
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AsmToken LexToken() override;
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public:
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AsmLexer(const MCAsmInfo &MAI);
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AsmLexer(const AsmLexer &) = delete;
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AsmLexer &operator=(const AsmLexer &) = delete;
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~AsmLexer() override;
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void setBuffer(StringRef Buf, const char *ptr = nullptr,
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bool EndStatementAtEOF = true);
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StringRef LexUntilEndOfStatement() override;
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size_t peekTokens(MutableArrayRef<AsmToken> Buf,
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bool ShouldSkipSpace = true) override;
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const MCAsmInfo &getMAI() const { return MAI; }
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private:
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bool isAtStartOfComment(const char *Ptr);
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bool isAtStatementSeparator(const char *Ptr);
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int getNextChar();
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int peekNextChar();
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AsmToken ReturnError(const char *Loc, const std::string &Msg);
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AsmToken LexIdentifier();
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AsmToken LexSlash();
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AsmToken LexLineComment();
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AsmToken LexDigit();
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AsmToken LexSingleQuote();
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AsmToken LexQuote();
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AsmToken LexFloatLiteral();
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AsmToken LexHexFloatLiteral(bool NoIntDigits);
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StringRef LexUntilEndOfLine();
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};
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} // end namespace llvm
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#endif // LLVM_MC_MCPARSER_ASMLEXER_H
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