fix: Fixed ALL the code

src/execution/execution.c

@@ -112,12 +112,11 @@ int execution(struct ast *ast)
         return 0;
     }
     case AST_CMD: {
-        struct ast_cmd *cmd = ast->data->ast_cmd; // Cast implicit
+        struct ast_cmd *cmd = ast_get_cmd(ast);
         return exec_command(cmd); // It's recursive
     }
     case AST_IF: {
-        struct ast_if *if_node =
-            ast->data->ast_if; // We cast the union to ast_if
+        struct ast_if *if_node = ast_get_if(ast);
         int cond = execution(if_node->condition);
         if (cond == 0) // True
         {

src/io_backend/io_backend.c

@@ -11,18 +11,19 @@ int iob_init(struct iob_context *ctx)
 
     switch (context.mode)
     {
-    IOB_MODE_STDIN:
+    case IOB_MODE_STDIN:
         input = stdin;
         return 0;
 
-    IOB_MODE_SCRIPT:
+    case IOB_MODE_SCRIPT:
         if (context.args == NULL)
             return -2;
         input = fopen(context.args, "r");
         if (input == NULL)
             return -4;
+        return 0;
 
-    IOB_MODE_CMD:
+    case IOB_MODE_CMD:
         if (context.args != NULL)
             return -2;
         else

src/lexer/lexer.c

@@ -1,13 +1,16 @@
 #include "lexer.h"
 
 #include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
 
 #include "io_backend/io_backend.h"
 
 static char *end_last_token;
 static ssize_t remaining_chars;
 
-char *new_token(char *begin, size_t size)
+char *new_token(char *begin, ssize_t size)
 {
     char *res = calloc(size + 1, sizeof(char));
     if (res == NULL)
@@ -56,6 +59,7 @@ char *get_token(void)
                 // skip blank char
                 // exit from loop
                 char *token = new_token(stream, i);
+                return token;
             }
         default:
             break;
@@ -64,4 +68,5 @@ char *get_token(void)
     }
 
     remaining_chars -= i;
+    return NULL;
 }

src/main.c

@@ -2,5 +2,7 @@
 
 int main(int argc, char **argv)
 {
+    (void)argc;
+    (void)argv;
     return 0;
 }

src/parser/parser.c

@@ -9,5 +9,6 @@ struct ast *get_ast()
 
 struct ast *get_ast_str(char *command)
 {
+    (void)command;
     return NULL;
 }

src/utils/Makefile.am

@@ -1,7 +1,9 @@
 lib_LIBRARIES = libutils.a
 
 libutils_a_SOURCES =  \
-	string_utils.c
+	string_utils/string_utils.c \
+	ast/ast.c \
+	lists/lists.c 
 
 libutils_a_CPPFLAGS = -I$(top_srcdir)/src
 

src/utils/string_utils/string_utils.c

@@ -1,4 +1,7 @@
-#include "utils/string_utils/string_utils.h"
+#include "string_utils.h"
+
+#include <ctype.h>
+#include <stddef.h>
 
 ssize_t skip_blanks(char **str)
 {
@@ -7,7 +10,7 @@ ssize_t skip_blanks(char **str)
         return 0;
     }
     ssize_t skipped = 0;
-    while (str[skipped] != '\0' && !isblank(str[skipped]))
+    while (*str[skipped] != '\0' && !isblank(str[skipped]))
     {
         skipped++;
     }

src/utils/string_utils/string_utils.h

@@ -1,6 +1,8 @@
 #ifndef STRING_UTILS_H
 #define STRING_UTILS_H
 
+#include <sys/types.h>
+
 /*
  * @brief: skips blank characters at the beginning of [str].
  * @return: number of characters skipped.