xref: /illumos-gate/usr/src/tools/smatch/src/scope.h (revision c85f09cc)
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 
28 struct symbol;
29 struct position;
30 
31 struct scope {
32 	struct token *token;
33 	struct symbol_list *symbols;	/* List of symbols in this scope */
34 	struct scope *next;
35 };
36 
37 extern struct scope
38 		*block_scope,
39 		*function_scope,
40 		*file_scope,
41 		*global_scope;
42 
toplevel(struct scope * scope)43 static inline int toplevel(struct scope *scope)
44 {
45 	return scope == file_scope || scope == global_scope;
46 }
47 
48 extern void start_file_scope(void);
49 extern void end_file_scope(void);
50 extern void new_file_scope(void);
51 
52 extern void start_symbol_scope(struct position pos);
53 extern void end_symbol_scope(void);
54 
55 extern void start_function_scope(struct position pos);
56 extern void end_function_scope(void);
57 
58 extern void bind_scope(struct symbol *, struct scope *);
59 extern void rebind_scope(struct symbol *, struct scope *);
60 
61 extern int is_outer_scope(struct scope *);
62 #endif
63