blob: f2325a306ba67978bf6840d47a9118d1c5e16f30 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* Copyright 2016 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef WABT_AST_LEXER_H_
#define WABT_AST_LEXER_H_
#include <stddef.h>
#include <stdio.h>
#include "common.h"
namespace wabt {
enum class AstLexerSourceType {
File,
Buffer,
};
struct AstLexerSource {
AstLexerSourceType type;
union {
FILE* file;
struct {
const void* data;
size_t size;
size_t read_offset;
} buffer;
};
};
struct AstLexer {
AstLexerSource source;
const char* filename;
int line;
int comment_nesting;
size_t buffer_file_offset; /* file offset of the start of the buffer */
size_t line_file_offset; /* file offset of the start of the current line */
/* lexing data needed by re2c */
bool eof;
char* buffer;
size_t buffer_size;
char* marker;
char* token;
char* cursor;
char* limit;
};
AstLexer* new_ast_file_lexer(const char* filename);
AstLexer* new_ast_buffer_lexer(const char* filename,
const void* data,
size_t size);
void destroy_ast_lexer(AstLexer*);
} // namespace wabt
#endif /* WABT_AST_LEXER_H_ */
|
