Add data structures for tokenizing and parsing

* Add data structures and helper functions for ast

* Add data structures for tokenizing

* Add helper functions for token structures

* Include token.h in minishell.h

* Add new/free functions for nodes/tokens to Makefile

* Add UNREACHABLE macro to debug_tools.h

1 files changed, 59 insertions, 0 deletions

diff --git a/src/free_node.c b/src/free_node.c
new file mode 100644
index 0000000..8f32c12
--- /dev/null
+++ b/src/free_node.c
@@ -0,0 +1,59 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   free_node.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/06/27 11:41:46 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/06/28 14:55:50 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ast.h"
+
+static void	free_assign_node(t_node *node);
+static void	free_pipe_node(t_node *node);
+static void	free_cmd_node(t_node *node);
+
+void	free_node(t_node *node)
+{
+	if (node->type == ASSIGN_NODE)
+		free_assign_node(node);
+	else if (node->type == PIPE_NODE)
+		free_pipe_node(node);
+	else if (node->type == CMD_NODE)
+		free_cmd_node(node);
+	else if (node->type == STRING_NODE)
+		free(node->content.string);
+	else
+		panic(UNREACHABLE);
+	free(node);
+}
+
+static void	free_assign_node(t_node *node)
+{
+	free(node->content.assign.var);
+	free(node->content.assign.value);
+}
+
+static void	free_pipe_node(t_node *node)
+{
+	free_node(node->content.pipe.left);
+	free_node(node->content.pipe.right);
+}
+
+static void	free_cmd_node(t_node *node)
+{
+	int	i;
+
+	i = 0;
+	while (node->content.cmd.args[i] != NULL)
+	{
+		free(node->content.cmd.args[i]);
+		i++;
+	}
+	free(node->content.cmd.args);
+	free(node->content.cmd.redirs[0].specifier);
+	free(node->content.cmd.redirs[1].specifier);
+}