fix: includes with relative path and memory leaks

src/parser/parsing_utils.c

@@ -8,13 +8,13 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "lexer/lexer.h"
-#include "utils/ast/ast.h"
+#include "../lexer/lexer.h"
+#include "../utils/ast/ast.h"
 
 // === Static functions
 
 /* Returns true if c is a command terminator, false otherwise
-*/
+ */
 static bool isterminator(struct token *token)
 {
     if (token == NULL)
@@ -70,7 +70,7 @@ struct ast *parse_list(void)
     current_node = parse_and_or();
     if (current_node == NULL)
         return NULL;
-    list_append(result_list, current_node);
+    result_list = list_append(result_list, current_node);
 
     // Following and_or commands
     token = PEEK_TOKEN();
@@ -82,11 +82,11 @@ struct ast *parse_list(void)
             current_node = parse_and_or();
             if (current_node == NULL)
             {
-                //TODO free list
+                // TODO free list
                 //  There must be a function for that
                 return NULL;
             }
-            list_append(result_list, current_node);
+            result_list = list_append(result_list, current_node);
             token = PEEK_TOKEN();
         }
     }
@@ -135,17 +135,37 @@ struct ast *parse_simple_command(void)
 
     while (token->type == TOKEN_WORD)
     {
-        token = POP_TOKEN();
-        char* word = strdup(token->data);
+        token = pop_token();
+        if (token == NULL)
+        {
+            // TODO free
+            return NULL;
+        }
+        char *word = strdup(token->data);
+        if (word == NULL)
+        {
+            // TODO free
+            puts("Internal error: Couldn't copy token content (is memory full "
+                 "?)");
+            return NULL;
+        }
         command_elements = list_append(command_elements, word);
-        token = PEEK_TOKEN();
+        token = peek_token();
+        if (token == NULL)
+        {
+            // TODO free
+            return NULL;
+        }
     }
 
     struct ast *result = ast_create_command(command_elements);
+    if (result == NULL)
+    {
+        // TODO free
+    }
     return result;
 }
 
-// TODO check compliance with the grammar
 struct ast *parse_shell_command(void)
 {
     return parse_if_rule();
@@ -267,7 +287,6 @@ struct ast *parse_compound_list(void)
         token = POP_TOKEN();
     }
 
-
     struct ast *result = ast_create_list(result_list);
     return result;
 }