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#ifndef SCOPE_H
#define SCOPE_H
/*
* Symbol scoping is pretty simple.
*
* Copyright (C) 2003 Transmeta Corp.
* 2003 Linus Torvalds
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
struct symbol;
struct scope {
struct symbol_list *symbols; /* List of symbols in this scope */
struct scope *next;
};
extern struct scope
*block_scope,
*label_scope,
*function_scope,
*file_scope,
*global_scope;
static inline int toplevel(struct scope *scope)
{
return scope == file_scope || scope == global_scope;
}
extern void start_file_scope(void);
extern void end_file_scope(void);
extern void new_file_scope(void);
extern void start_block_scope(void);
extern void end_block_scope(void);
extern void start_function_scope(void);
extern void end_function_scope(void);
extern void start_label_scope(void);
extern void end_label_scope(void);
extern void set_current_scope(struct symbol *);
extern void bind_scope(struct symbol *, struct scope *);
extern void rebind_scope(struct symbol *, struct scope *);
extern int is_outer_scope(struct scope *);
extern int is_in_scope(struct scope *outer, struct scope *inner);
#endif
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