30 lines
609 B
C
30 lines
609 B
C
#include "ast.h"
|
|
|
|
#include <stdbool.h>
|
|
|
|
void ast_free(struct ast *node)
|
|
{
|
|
if (node == NULL)
|
|
return;
|
|
// ast void does not need to be freed.
|
|
if (ast_is_if(node))
|
|
ast_free_if(ast_get_if(node));
|
|
else if (ast_is_command(node))
|
|
ast_free_command(ast_get_command(node));
|
|
else if (ast_is_list(node))
|
|
ast_free_list(ast_get_list(node));
|
|
|
|
free(node);
|
|
}
|
|
|
|
struct ast *ast_create(enum ast_type type, void *data)
|
|
{
|
|
struct ast *node = malloc(sizeof(struct ast));
|
|
if (!node)
|
|
return NULL;
|
|
|
|
node->type = type;
|
|
node->data = data;
|
|
|
|
return node;
|
|
}
|