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annotate lwbasic/symtab.c @ 70:ceab04fd2969
Fixed premature installation of external reference under UNDEFEXTERN pragma; should not resolve to external references until after the initial parsing pass
| author | lost@l-w.ca |
|---|---|
| date | Sun, 10 Apr 2011 13:15:12 -0600 |
| parents | 49d608aecc4d |
| children |
| rev | line source |
|---|---|
| 29 | 1 /* |
| 2 symtab.c | |
| 3 | |
| 4 Copyright © 2011 William Astle | |
| 5 | |
| 6 This file is part of LWTOOLS. | |
| 7 | |
| 8 LWTOOLS is free software: you can redistribute it and/or modify it under the | |
| 9 terms of the GNU General Public License as published by the Free Software | |
| 10 Foundation, either version 3 of the License, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 This program is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 16 more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License along with | |
| 19 this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 */ | |
| 21 | |
| 22 /* | |
| 23 Symbol table handling | |
| 24 */ | |
| 25 | |
| 26 #include <stdlib.h> | |
| 27 #include <string.h> | |
| 28 | |
| 29 #include <lw_alloc.h> | |
| 30 #include <lw_string.h> | |
| 31 | |
| 32 #define __symtab_c_seen__ | |
| 33 #include "symtab.h" | |
| 34 | |
| 35 symtab_t *symtab_init(void) | |
| 36 { | |
| 37 symtab_t *st; | |
| 38 | |
| 39 st = lw_alloc(sizeof(symtab_t)); | |
| 40 st -> head = NULL; | |
| 41 return st; | |
| 42 } | |
| 43 | |
| 44 void symtab_destroy(symtab_t *st) | |
| 45 { | |
| 46 symtab_entry_t *se; | |
| 47 | |
| 48 while (st -> head) | |
| 49 { | |
| 50 se = st -> head; | |
| 51 st -> head = se -> next; | |
| 52 lw_free(se -> name); | |
|
32
49d608aecc4d
Framework for handling local stack frame and/or variables
lost@l-w.ca
parents:
29
diff
changeset
|
53 lw_free(se -> privdata); |
| 29 | 54 lw_free(se); |
| 55 } | |
| 56 lw_free(st); | |
| 57 } | |
| 58 | |
| 59 symtab_entry_t *symtab_find(symtab_t *st, char *name) | |
| 60 { | |
| 61 symtab_entry_t *se; | |
| 62 | |
| 63 for (se = st -> head; se; se = se -> next) | |
| 64 { | |
| 65 if (strcmp(se -> name, name) == 0) | |
| 66 return se; | |
| 67 } | |
| 68 return NULL; | |
| 69 } | |
| 70 | |
|
32
49d608aecc4d
Framework for handling local stack frame and/or variables
lost@l-w.ca
parents:
29
diff
changeset
|
71 void symtab_register(symtab_t *st, char *name, int addr, int symtype, void *privdata) |
| 29 | 72 { |
| 73 symtab_entry_t *se; | |
| 74 | |
| 75 se = lw_alloc(sizeof(symtab_entry_t)); | |
| 76 se -> name = lw_strdup(name); | |
| 77 se -> addr = addr; | |
| 78 se -> symtype = symtype; | |
|
32
49d608aecc4d
Framework for handling local stack frame and/or variables
lost@l-w.ca
parents:
29
diff
changeset
|
79 se -> privdata = privdata; |
| 29 | 80 se -> next = st -> head; |
| 81 st -> head = se; | |
| 82 } |