| 1 | //===- ScriptLexer.h --------------------------------------------*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #ifndef LLD_ELF_SCRIPT_LEXER_H |
| 10 | #define LLD_ELF_SCRIPT_LEXER_H |
| 11 | |
| 12 | #include "lld/Common/LLVM.h" |
| 13 | #include "llvm/ADT/StringRef.h" |
| 14 | #include "llvm/Support/MemoryBufferRef.h" |
| 15 | #include <vector> |
| 16 | |
| 17 | namespace lld::elf { |
| 18 | |
| 19 | class ScriptLexer { |
| 20 | public: |
| 21 | explicit ScriptLexer(MemoryBufferRef mb); |
| 22 | |
| 23 | void setError(const Twine &msg); |
| 24 | void tokenize(MemoryBufferRef mb); |
| 25 | StringRef skipSpace(StringRef s); |
| 26 | bool atEOF(); |
| 27 | StringRef next(); |
| 28 | StringRef peek(); |
| 29 | StringRef peek2(); |
| 30 | void skip(); |
| 31 | bool consume(StringRef tok); |
| 32 | void expect(StringRef expect); |
| 33 | bool consumeLabel(StringRef tok); |
| 34 | std::string getCurrentLocation(); |
| 35 | MemoryBufferRef getCurrentMB(); |
| 36 | |
| 37 | std::vector<MemoryBufferRef> mbs; |
| 38 | std::vector<StringRef> tokens; |
| 39 | bool inExpr = false; |
| 40 | size_t pos = 0; |
| 41 | |
| 42 | size_t lastLineNumber = 0; |
| 43 | size_t lastLineNumberOffset = 0; |
| 44 | |
| 45 | private: |
| 46 | void maybeSplitExpr(); |
| 47 | StringRef getLine(); |
| 48 | size_t getLineNumber(); |
| 49 | size_t getColumnNumber(); |
| 50 | }; |
| 51 | |
| 52 | } // namespace lld::elf |
| 53 | |
| 54 | #endif |
| 55 |