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#include "code.h"
#include <string.h>
#include <time.h>
#include "mem.h"
void fill_node_int(struct node** node, int i) {
free_node(*node, 0);
(*node)->kind = EXPR_INT;
(*node)->var1 = my_calloc(1, sizeof(int));
*((int*) (*node)->var1) = i;
}
void fill_node_name(struct node** node, char* s) {
free_node(*node, 0);
(*node)->kind = EXPR_NAME;
(*node)->var1 = my_calloc(1, strlen(s) + 1);
strcpy((*node)->var1, s);
}
void code_time(struct node** result) {
fill_node_int(result, (int) time(NULL));
}
void code_mul(struct node** result, struct node* a, struct node* b) {
if (a->kind != EXPR_INT || b->kind != EXPR_INT)
fill_node_name(result, "mul on non-ints");
else
fill_node_int(result, *((int*) a->var1) * *((int*) b->var1));
}
void code_sub(struct node** result, struct node* a, struct node* b) {
if (a->kind != EXPR_INT || b->kind != EXPR_INT)
fill_node_name(result, "sub on non-ints");
else
fill_node_int(result, *((int*) b->var1) - *((int*) a->var1));
}
unsigned char code_find(char* name, void** function) {
if (!strcmp(name, "time")) {
*function = (void(*)(void)) code_time;
return 0;
} else if (!strcmp(name, "mul")) {
*function = (void(*)(void)) code_mul;
return 2;
} else if (!strcmp(name, "sub")) {
*function = (void(*)(void)) code_sub;
return 2;
}
*function = NULL;
return 0;
}
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