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val.c
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val.c
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/* val.c - Dynamically-typed PUSH values
*
* Copyright (c) 2012 Janosch Gräf <janosch.graef@gmx.net>
* 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.
*/
#include <glib.h>
#include <string.h>
#include <stdarg.h>
#include "push.h"
push_val_t *push_val_new(push_t *push, int type, ...) {
va_list ap;
push_val_t *val;
push_code_t *code;
/* create dynamically-typed value */
val = g_slice_new(push_val_t);
val->type = type;
/* set value */
va_start(ap, type);
switch (type) {
case PUSH_TYPE_BOOL:
val->boolean = va_arg(ap, push_bool_t);
break;
case PUSH_TYPE_CODE:
code = va_arg(ap, push_code_t*);
val->code = code == NULL ? push_code_new() : code;
break;
case PUSH_TYPE_INT:
val->integer = va_arg(ap, push_int_t);
break;
case PUSH_TYPE_INSTR:
val->instr = va_arg(ap, push_instr_t*);
break;
case PUSH_TYPE_NAME:
val->name = va_arg(ap, push_name_t);
break;
case PUSH_TYPE_REAL:
val->real = va_arg(ap, push_real_t);
break;
default:
val->type = PUSH_TYPE_NONE;
break;
}
va_end(ap);
/* add to garbage collection */
if (push != NULL) {
push_gc_add_val(push->gc, val, FALSE);
}
return val;
}
push_val_t *push_val_copy(push_val_t *val, push_t *to_push) {
push_val_t *new_val;
push_code_t *new_code;
GList *link;
new_val = push_val_new(to_push, PUSH_TYPE_NONE);
new_val->type = val->type;
if (push_check_code(val)) {
/* copy code */
new_code = push_code_new();
for (link = val->code->head; link != NULL; link = link->next) {
push_code_append(new_code, push_val_copy((push_val_t*)link->data, to_push));
}
new_val->code = new_code;
}
else if (push_check_instr(val)) {
new_val->instr = push_instr_lookup(to_push, val->instr->name);
g_return_val_if_null(new_val->instr, NULL);
}
else {
new_val->_value = val->_value;
}
return new_val;
}
void push_val_destroy(push_val_t *val) {
g_return_if_null(val);
if (push_check_code(val)) {
push_code_destroy(val->code);
}
g_slice_free(push_val_t, val);
}
push_bool_t push_val_equal(push_val_t *val1, push_val_t *val2) {
g_return_val_if_null(val1, FALSE);
g_return_val_if_null(val2, FALSE);
if (val1 == val2) {
return TRUE;
}
else if (val1->type != val2->type) {
return FALSE;
}
else {
switch (val1->type) {
case PUSH_TYPE_NONE:
return 1;
case PUSH_TYPE_BOOL:
return val1->boolean == val2->boolean;
case PUSH_TYPE_CODE:
return push_code_equal(val1->code, val2->code);
case PUSH_TYPE_INT:
return val1->integer == val2->integer;
case PUSH_TYPE_INSTR:
return val1->instr == val2->instr;
case PUSH_TYPE_NAME:
return val1->name == val2->name;
case PUSH_TYPE_REAL:
return val1->real == val2->real;
default:
return FALSE;
}
}
}
push_val_t *push_val_make_code(push_t *push, push_val_t *val) {
push_val_t *val_new;
g_return_val_if_null(val, NULL);
if (push_check_code(val)) {
return val;
}
else {
val_new = push_val_new(push, PUSH_TYPE_CODE, NULL);
push_code_append(val_new->code, val);
return val_new;
}
}