AST.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   AST.c                                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rocky <marvin@42.fr>                       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/06/12 19:35:45 by rocky             #+#    #+#             */
/*   Updated: 2024/09/09 16:18:58 by dmdemirk         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "tokens.h"
 
t_ast   *manage_redirs(t_token **tokens, t_ms_data *data);
t_ast   *create_redir_node(t_token *token);
int     is_redir_node(t_token *tokens);
t_ast   *new_ast_node(void);
 
t_ast   *manage_redirs(t_token **tokens, t_ms_data *data)
{
    t_ast       *command_node;
    t_ast       *redirect_node;
    t_token     *current_token;
 
    if (!tokens || !*tokens)
        return (NULL);
    command_node = manage_commands(tokens, data);
    current_token = *tokens;
    while (current_token && is_redir_node(current_token))
    {
        redirect_node = create_redir_node(current_token);
        redirect_node->left = command_node;
        *tokens = current_token->next;
        if (*tokens)
        {
            redirect_node->right = create_redir_node(*tokens);
            *tokens = (*tokens)->next;
        }
        else
            redirect_node->right = NULL;
        command_node = redirect_node;
        current_token = *tokens;
    }
    return (command_node);
}
 
void    set_command_args(t_ast *command_node, t_token **tokens, int arg_count)
{
    int i;
 
    i = 0;
    while (i < arg_count)
    {
        command_node->args[i] = ft_strdup((*tokens)->data);
        *tokens = (*tokens)->next;
        i++;
    }
    command_node->args[arg_count] = NULL;
}
 
t_ast   *create_redir_node(t_token *token)
{
    t_ast           *node;
 
    node = new_ast_node();
    node->type = token->type;
    node->args = malloc(sizeof(char *) * 2);
    if (!node->args)
    {
        free(node);
        return (NULL);
    }
    node->args[0] = ft_strdup(token->data);
    node->args[1] = NULL;
    return (node);
}
 
int is_redir_node(t_token *tokens)
{
    if (tokens->type == REDIR_IN
        || tokens->type == REDIR_OUT
        || tokens->type == REDIR_APPEND
        || tokens->type == REDIR_HEREDOC)
        return (1);
    return (0);
}
 
t_ast   *new_ast_node(void)
{
    t_ast       *node;
 
    node = malloc(sizeof(t_ast));
    if (!node)
        return (NULL);
    node->type = NONE;
    node->args = NULL;
    node->left = NULL;
    node->right = NULL;
    return (node);
}