| 1 | #include "cparse.h" |
| 2 | |
| 3 | static struct scope *scope; |
| 4 | |
| 5 | void enter_scope(void) { |
| 6 | struct scope *new_scope; |
| 7 | |
| 8 | NEW(new_scope); |
| 9 | new_scope->parent = scope; |
| 10 | scope = new_scope; |
| 11 | } |
| 12 | |
| 13 | void exit_scope(void) { |
| 14 | scope = scope->parent; |
| 15 | } |
| 16 | |
| 17 | /* might be called before the declaration_specifiers have been filled in */ |
| 18 | void add_declaration(struct declarator *d) { |
| 19 | /* skip nameless declarators to simplify some callers */ |
| 20 | if(d->name) { |
| 21 | if(!scope->declarations) |
| 22 | scope->declarations = dict_new(); |
| 23 | dict_add(scope->declarations, d->name, d); |
| 24 | } |
| 25 | /* XXX redeclaration */ |
| 26 | } |
| 27 | |
| 28 | struct declarator *lookup(const char *name) { |
| 29 | const struct scope *s; |
| 30 | struct declarator *d; |
| 31 | |
| 32 | for(s = scope; s; s = s->parent) |
| 33 | if(s->declarations && (d = dict_get(s->declarations, name))) |
| 34 | return d; |
| 35 | return 0; |
| 36 | } |
| 37 | |
| 38 | void scope_init(void) { |
| 39 | scope = 0; |
| 40 | enter_scope(); |
| 41 | } |
| 42 | |
| 43 | /* |
| 44 | Local Variables: |
| 45 | c-basic-offset:2 |
| 46 | comment-column:40 |
| 47 | fill-column:79 |
| 48 | End: |
| 49 | */ |