Added doc

1 files changed, 103 insertions, 0 deletions

diff --git a/src/eval/eval.c b/src/eval/eval.c
new file mode 100644
index 0000000..8fca2c1
--- /dev/null
+++ b/src/eval/eval.c
@@ -0,0 +1,103 @@
+/**
+** \file   eval.c
+** \brief  Evaluation of an AST
+*/
+
+#include "minishell.h"
+
+
+static bool check_node(t_ast *ast)
+{
+
+}
+
+static int eval_sep(t_ast *ast)
+{
+	if (ast->children_num != 2)
+		return (-1);
+	if (ast->tag == TAG_ENDCMD)
+	{
+		ms_eval(path, env, ast->children[0]);
+		return (ms_eval(path, env, ast->children[1]));
+	}
+	if (ast->tag == TAG_AND)
+	{
+		status = ms_eval(path, env, ast->children[0]);
+		if (status == 0)
+			return (ms_eval(path, env, ast->children[1]));
+		else
+			return (status);
+	}
+	if (ast->tag == TAG_OR)
+	{
+		status = ms_eval(path, env, ast->children[0]);
+		if (status != 0)
+			return (ms_eval(path, env, ast->children[1]));
+		else
+			return (status);
+	}
+	return (-1);
+}
+
+static char	**get_args(t_ast *ast)
+{
+	int		i;
+	int		counter;
+	char	**argv;
+
+	if (ast->tag != TAG_CMD)
+		return (NULL);
+	counter = 0;
+	i = -1;
+	while (++i < ast->children_num)
+		if (ast->children[i]->tag == TAG_ARG)
+			counter++;
+	if ((argv = (char**)ft_calloc(counter + 1, sizeof(char*))) == NULL)
+		return (NULL);
+	counter = 0;
+	i = -1;
+	while (++i < ast->children_num)
+	{
+		if (ast->children[i]->tag != TAG_ARG)
+			continue ;
+		if ((argv[counter] = ft_strdup(ast->children[i]->content)) == NULL)
+		{
+			ft_split_destroy(argv);
+			return (NULL);
+		}
+	}
+	return (argv);
+
+	/* maybe
+	int		i;
+	char	*tmp;
+	t_vec	*vec;
+
+	if ((vec = ft_vecnew(sizeof(char*))) == NULL)
+		return (NULL);
+	i = -1;
+	while (++i < ast->children_num)
+	{
+		if (ast->children[i]->tag != TAG_ARG)
+			continue ;
+		if ((tmp = ft_strdup(ast->children[i]->content)) == NULL
+			|| ft_vecpush(vec, tmp) == NULL))
+		{
+			ft_vecdestroy(vec, free);
+			return (NULL);
+		}
+	}
+	return (vec);
+	*/
+}
+
+//reduce?
+int	ms_eval(t_path path, t_env env, t_ast *ast)
+{
+	int	status;
+
+	if (ast->tag == TAG_ENDCMD || ast->tag == TAG_AND
+			|| ast->tag == TAG_OR || ast->tag == TAG_PIPE)
+		return (eval_sep(ast));
+
+}