1#ifndef SCOPE_H
2#define SCOPE_H
3/*
4 * Symbol scoping is pretty simple.
5 *
6 * Copyright (C) 2003 Transmeta Corp.
7 *               2003 Linus Torvalds
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 * THE SOFTWARE.
26 */
27
28struct symbol;
29struct position;
30
31struct scope {
32	struct token *token;
33	struct symbol_list *symbols;	/* List of symbols in this scope */
34	struct scope *next;
35};
36
37extern struct scope
38		*block_scope,
39		*function_scope,
40		*file_scope,
41		*global_scope;
42
43static inline int toplevel(struct scope *scope)
44{
45	return scope == file_scope || scope == global_scope;
46}
47
48extern void start_file_scope(void);
49extern void end_file_scope(void);
50extern void new_file_scope(void);
51
52extern void start_symbol_scope(struct position pos);
53extern void end_symbol_scope(void);
54
55extern void start_function_scope(struct position pos);
56extern void end_function_scope(void);
57
58extern void bind_scope(struct symbol *, struct scope *);
59extern void rebind_scope(struct symbol *, struct scope *);
60
61extern int is_outer_scope(struct scope *);
62#endif
63