mirror of
https://github.com/DarkPlacesEngine/gmqcc.git
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95 lines
3 KiB
C
95 lines
3 KiB
C
/*
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* Copyright (C) 2012
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* Dale Weiler
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <string.h>
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#include <stdint.h> /* replace if stdint.h doesn't exist! */
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#include <limits.h>
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#include "gmqcc.h"
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static typedef_node *typedef_table[1024];
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void typedef_init() {
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int i;
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for(i = 0; i < sizeof(typedef_table)/sizeof(*typedef_table); i++)
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typedef_table[i] = NULL;
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}
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unsigned int typedef_hash(const char *s) {
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unsigned int hash = 0;
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unsigned int size = strlen(s);
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unsigned int iter;
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for (iter = 0; iter < size; iter++) {
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hash += s[iter];
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hash += (hash << 10);
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hash ^= (hash >> 6);
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}
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hash += (hash << 3);
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hash ^= (hash >> 11);
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hash += (hash << 15);
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return hash % 1024;
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}
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typedef_node *typedef_find(const char *s) {
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unsigned int hash = typedef_hash(s);
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typedef_node *find = typedef_table[hash];
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return find;
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}
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void typedef_clear() {
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int i;
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for(i = 1024; i > 0; i--) {
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if(typedef_table[i]) {
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mem_d(typedef_table[i]->name);
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mem_d(typedef_table[i]);
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}
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}
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}
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int typedef_add(const char *from, const char *to) {
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unsigned int hash = typedef_hash(to);
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typedef_node *find = typedef_table[hash];
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if (find)
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return error(ERROR_PARSE, "typedef for %s already exists or conflicts\n", to);
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/* check if the type exists first */
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if (strncmp(from, "float", sizeof("float")) == 0 ||
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strncmp(from, "vector", sizeof("vector")) == 0 ||
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strncmp(from, "string", sizeof("string")) == 0 ||
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strncmp(from, "entity", sizeof("entity")) == 0 ||
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strncmp(from, "void", sizeof("void")) == 0) {
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typedef_table[hash] = mem_a(sizeof(typedef_node));
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typedef_table[hash]->name = strdup(from);
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return -100;
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} else {
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/* search the typedefs for it (typedef-a-typedef?) */
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typedef_node *find = typedef_table[typedef_hash(from)];
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if (find) {
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typedef_table[hash] = mem_a(sizeof(typedef_node));
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typedef_table[hash]->name = util_strdup(find->name);
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return -100;
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}
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}
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return error(ERROR_PARSE, "cannot typedef `%s` (not a type)\n", from);
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}
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