diff --git a/srcs/lm_data_utils.c b/srcs/lm_data_utils.c
new file mode 100644
index 0000000..f7101b0
--- /dev/null
+++ b/srcs/lm_data_utils.c
@@ -0,0 +1,39 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   lm_data_utils.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: mndhlovu <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/04/05 06:35:40 by mndhlovu          #+#    #+#             */
+/*   Updated: 2019/04/08 16:40:15 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "lem_in.h"
+
+t_rdata                     *lm_new_raw_line(char *raw)
+{
+    t_rdata                 *line;
+
+    if (!(line = (t_rdata *)malloc(sizeof(t_rdata))))
+        return (NULL);
+    line->line = ft_strdup(raw);
+    line->next = NULL;
+    return (line);
+}
+
+void                        lm_append_line(t_rdata **line, char *raw)
+{
+    if (*line)
+    {
+        if((*line)->next)
+            lm_append_line(&(*line)->next, raw);
+        else
+            (*line)->next = lm_new_raw_line(raw);
+    }
+    else
+    {
+        *line = lm_new_raw_line(raw);
+    } 
+}
diff --git a/srcs/lm_parser_error_check.c b/srcs/lm_parser_error_check.c
new file mode 100644
index 0000000..ae8c136
--- /dev/null
+++ b/srcs/lm_parser_error_check.c
@@ -0,0 +1,75 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   lm_parser_error_check.c                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: mndhlovu <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/04/08 06:42:37 by mndhlovu          #+#    #+#             */
+/*   Updated: 2019/04/08 17:04:05 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "lem_in.h"
+
+int            lm_chk_format_nbr(char *raw)
+{
+	while (*raw)
+	{
+		if (*raw == '-' || *raw == '+')
+			raw++;
+		if (!ft_isdigit(*raw))
+			return (-1);
+		raw++;
+	}
+	return (0);
+}
+
+int		        lm_check_max(char *raw)
+{
+	if (ft_atoi(raw) < INT_MIN || ft_atoi(raw) > INT_MAX)
+		return (-1);
+	return (0);
+}
+
+int		         lm_validate_name(char *name)
+{
+	int	         index;
+
+	index = 0;
+	if (name[0] == 'L')
+		return (-1);
+	while (name[index])
+	{
+		if (name[index] == '-')
+			return (-1);
+		index++;
+	}
+	return (0);
+}
+
+int		        lm_validate_rooms(char *name, char *x, char *y)
+{
+	if (lm_validate_name(name) == -1)
+		return (-1);
+	if (lm_chk_format_nbr(x) == -1 ||
+			lm_check_max(x) == -1 || (ft_atoi(x) > 0 &&
+				(ft_atoi(x) == 0)) ||
+			ft_strlen(x) > 19)
+		return (0);
+	if (lm_chk_format_nbr(y) == -1 ||
+			lm_check_max(y) == -1 || (ft_atoi(y) > 0 &&
+				(ft_atoi(y) == 0)) ||
+			ft_strlen(y) > 19)
+		return (0);
+	return (1);
+}
+
+int		        lm_error_nbr(char *raw)
+{
+	if (lm_chk_format_nbr(raw) == -1 || lm_check_max(raw) == -1 ||
+			(ft_atoi(raw) > 0 && (ft_atoi(raw) == 0)) ||
+			ft_strlen(raw) > 19)
+		return (-1);
+	return (0);
+}
diff --git a/srcs/lm_utils_parser.c b/srcs/lm_utils_parser.c
new file mode 100644
index 0000000..b88db9b
--- /dev/null
+++ b/srcs/lm_utils_parser.c
@@ -0,0 +1,90 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   lm_utils_parser.c                                  :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: mndhlovu <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/04/04 09:24:45 by mndhlovu          #+#    #+#             */
+/*   Updated: 2019/04/08 16:51:51 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "lem_in.h"
+
+int             lm_get_value(char *line)
+{
+    int         index;
+
+    if (line != NULL)
+    {
+        index = ft_atoi(line);
+        if (index > INT_MIN && index < INT_MAX)
+        {
+            if (index > 0)
+                return (index);
+            else
+            {
+                return (-1);
+            }
+        }
+    }
+    return (-1);
+}
+
+void             lm_get_cmd_vert(int count, t_syntax *synt
+								, t_lmdata *ldata, char *line)
+{
+    char        *tmp;
+
+    if (synt->s_pos == count - 1)
+    {
+        tmp = ft_strchr(line, '#');
+        if (tmp == NULL && count != synt->e_vert)
+        {
+            synt->s_vert = count;
+            if (!(lm_add_vertex(ldata, line, 's', synt)))
+                synt->e_error = 1;
+        }
+    }
+    if (synt->e_pos == count - 1)
+    {
+        tmp = ft_strchr(line, '#');
+        if (tmp == NULL && count != synt->s_vert)
+        {
+            synt->e_vert = count;
+            if (!(lm_add_vertex(ldata, line, 'e', synt)))
+                synt->s_error = 1;
+        }
+    }
+}
+
+void             lm_get_vert_link(int count, t_syntax *synt, t_lmdata *ldata
+								, t_holder *holder, char *line)
+{
+    char        *link_sign;
+    char        *hash;
+
+
+     if (count > 0 && (count != synt->s_vert && count != synt->e_vert)
+        && (count != synt->s_pos && count != synt->e_pos))
+     {
+         link_sign = ft_strchr(line, '-');
+         hash = ft_strchr(line, '#');
+         if (link_sign == NULL && hash == NULL)
+         {
+             if (!(lm_add_vertex(ldata, line, 'v', synt)))
+             {
+                 synt->v_error = 1;
+             }
+         }
+         if (link_sign != NULL && hash == NULL)
+         {
+             if (!(lm_ext_conn(holder, ldata, line)))
+             {
+                 synt->l_error = 1;
+                 return ;
+             }
+         }
+     } 
+}