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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ast.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: charles <charles@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/04/01 17:05:42 by charles #+# #+# */
/* Updated: 2020/06/18 13:39:30 by charles ### ########.fr */
/* */
/* ************************************************************************** */
/*
** \file ast.c
** \brief AST functions
*/
#include "ast.h"
/*
** \brief Create a new AST node according to `tag`
** \param tag Tag of node
** \return Created node or NULL on error
*/
t_ast *ast_new(enum e_ast_tag tag)
{
t_ast *ast;
if ((ast = (t_ast*)malloc(sizeof(t_ast))) == NULL)
return (NULL);
ast->tag = tag;
ast->redirs = NULL;
ast->op.left = NULL;
ast->op.right = NULL;
ast->cmd_argv = NULL;
return (ast);
}
/*
** \brief Destroy an AST node and all his child nodes
** \param ast AST to destroy
*/
void ast_destroy(t_ast *ast)
{
if (ast == NULL)
return ;
ft_lstdestroy(&ast->cmd_argv, (void (*)(void*))token_destroy);
if (ast->tag == AST_CMD)
{
ft_lstdestroy(&ast->cmd_argv, (void (*)(void*))token_destroy);
ft_lstdestroy(&ast->redirs, (void (*)(void*))token_destroy);
}
else if (ast->tag == AST_OP)
{
ast_destroy(ast->op.left);
ast_destroy(ast->op.right);
}
free(ast);
}
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