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//===- ScriptLexer.h --------------------------------------------*- 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 LLD_ELF_SCRIPT_LEXER_H
#define LLD_ELF_SCRIPT_LEXER_H
#include "lld/Common/LLVM.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/MemoryBuffer.h"
#include <utility>
#include <vector>
namespace lld {
namespace elf {
class ScriptLexer {
public:
explicit ScriptLexer(MemoryBufferRef mb);
void setError(const Twine &msg);
void tokenize(MemoryBufferRef mb);
static StringRef skipSpace(StringRef s);
bool atEOF();
StringRef next();
StringRef peek();
StringRef peek2();
void skip();
bool consume(StringRef tok);
void expect(StringRef expect);
bool consumeLabel(StringRef tok);
std::string getCurrentLocation();
std::vector<MemoryBufferRef> mbs;
std::vector<StringRef> tokens;
bool inExpr = false;
size_t pos = 0;
protected:
MemoryBufferRef getCurrentMB();
private:
void maybeSplitExpr();
StringRef getLine();
size_t getLineNumber();
size_t getColumnNumber();
};
} // namespace elf
} // namespace lld
#endif
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