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The C and C++ Include Header Files

cat -n /usr/include/wabt/lexer-source-line-finder.h

     1	/*
     2	 * Copyright 2017 WebAssembly Community Group participants
     3	 *
     4	 * Licensed under the Apache License, Version 2.0 (the "License");
     5	 * you may not use this file except in compliance with the License.
     6	 * You may obtain a copy of the License at
     7	 *
     8	 *     http://www.apache.org/licenses/LICENSE-2.0
     9	 *
    10	 * Unless required by applicable law or agreed to in writing, software
    11	 * distributed under the License is distributed on an "AS IS" BASIS,
    12	 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13	 * See the License for the specific language governing permissions and
    14	 * limitations under the License.
    15	 */
    16	
    17	#ifndef WABT_LEXER_SOURCE_LINE_FINDER_H_
    18	#define WABT_LEXER_SOURCE_LINE_FINDER_H_
    19	
    20	#include <memory>
    21	#include <string>
    22	#include <vector>
    23	
    24	#include "wabt/common.h"
    25	#include "wabt/lexer-source.h"
    26	#include "wabt/range.h"
    27	
    28	namespace wabt {
    29	
    30	class LexerSourceLineFinder {
    31	 public:
    32	  struct SourceLine {
    33	    std::string line;
    34	    int column_offset;
    35	  };
    36	
    37	  explicit LexerSourceLineFinder(std::unique_ptr<LexerSource>);
    38	
    39	  Result GetSourceLine(const Location& loc,
    40	                       Offset max_line_length,
    41	                       SourceLine* out_source_line);
    42	  Result GetLineOffsets(int line, OffsetRange* out_offsets);
    43	
    44	 private:
    45	  static OffsetRange ClampSourceLineOffsets(OffsetRange line_offset_range,
    46	                                            ColumnRange column_range,
    47	                                            Offset max_line_length);
    48	
    49	  bool IsLineCached(int line) const;
    50	  OffsetRange GetCachedLine(int line) const;
    51	
    52	  std::unique_ptr<LexerSource> source_;
    53	  std::vector<OffsetRange> line_ranges_;
    54	  Offset next_line_start_;
    55	  bool last_cr_;  // Last read character was a '\r' (carriage return).
    56	  bool eof_;
    57	};
    58	
    59	}  // namespace wabt
    60	
    61	#endif  // WABT_LEXER_SOURCE_LINE_FINDER_H_