/* Frees perframe equation structure */
void free_per_frame_eqn(per_frame_eqn_t * per_frame_eqn) {
if (per_frame_eqn == NULL)
return;
free_gen_expr(per_frame_eqn->gen_expr);
free(per_frame_eqn);
}
void free_per_point_eqn(per_point_eqn_t * per_point_eqn) {
if (per_point_eqn == NULL)
return;
free_gen_expr(per_point_eqn->gen_expr);
free(per_point_eqn);
return;
}
/* Frees a function in prefix notation */
int free_prefun_expr(prefun_expr_t * prefun_expr) {
int i;
if (prefun_expr == NULL)
return SUCCESS;
/* Free every element in expression list */
for (i = 0 ; i < prefun_expr->num_args; i++) {
free_gen_expr(prefun_expr->expr_list[i]);
}
free(prefun_expr);
return SUCCESS;
}
/* Frees a tree expression */
int free_tree_expr(tree_expr_t * tree_expr) {
if (tree_expr == NULL)
return SUCCESS;
/* free left tree */
free_tree_expr(tree_expr->left);
/* free general expression object */
free_gen_expr(tree_expr->gen_expr);
/* Note that infix operators are always
stored in memory unless the program
exits, so we don't remove them here */
/* free right tree */
free_tree_expr(tree_expr->right);
/* finally, free the struct itself */
free(tree_expr);
return SUCCESS;
}
