fix: updated main to a parse-execute loop and changed error codes from an enum to macros

src/main.c

@@ -1,4 +1,5 @@
-// All the includes
+// === Includes
+#include <cstddef>
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -7,22 +8,24 @@
 #include "parser/parser.h"
 #include "utils/args/args.h"
 
-enum return_codes
-{
-    SUCCESS = 0,
-    ERR_IO_BACKEND = 2,
-    ERR_MALLOC = 3
-};
+// === Error codes
+
+#define SUCCESS 0
+#define ERR_INPUT_PROCESSING 2
+#define ERR_MALLOC 3
+#define ERR_GENERIC 4
+
+// === Functions
 
 int main(int argc, char **argv)
 {
     // Create the options struct (with argument handler)
     struct args_options options;
-    int r = args_handler(argc, argv, &options);
-    if (r != 0)
+    int return_code = args_handler(argc, argv, &options);
+    if (return_code != 0)
     {
         print_usage(stderr, argv[0]);
-        return ERR_IO_BACKEND;
+        return ERR_INPUT_PROCESSING;
     }
     // args_print(&options);
 
@@ -36,33 +39,42 @@ int main(int argc, char **argv)
     }
 
     // Convert args_options to iob_context
-    r = iob_config_from_args(&options, io_context);
-    if (r != 0)
+    return_code = iob_config_from_args(&options, io_context);
+    if (return_code != 0)
     {
         fprintf(stderr,
                 "Error: Failed to configure IO Backend from arguments\n");
         free(io_context);
-        return ERR_IO_BACKEND;
+        return ERR_INPUT_PROCESSING;
     }
 
     // Init IO Backend (with the context struct)
-    r = iob_init(io_context);
-    if (r != 0)
+    return_code = iob_init(io_context);
+    if (return_code != 0)
     {
         fprintf(stderr,
-                "Error: IO Backend initialization failed with code %d\n", r);
+                "Error: IO Backend initialization failed with code %d\n",
+                return_code);
         free(io_context);
-        return ERR_IO_BACKEND;
+        return ERR_INPUT_PROCESSING;
     }
 
     free(io_context);
 
-    // Call the parser to get the AST
-    struct ast *command_ast = get_ast(); // We'll pass the options later
+    // Retrieve and build first AST
+    struct ast *command_ast = get_ast();
 
-    // Call the executor with the AST
-    r = execution(command_ast);
+    // Main parse-execute loop
+    while (command_ast != NULL && command_ast->type != AST_END)
+    {
+        // Execute AST
+        return_code = execution(command_ast);
 
-    // Return the execution return code (last command executed)
-    return r;
+        // Retrieve and build next AST
+        command_ast = get_ast();
+    }
+    if (command_ast == NULL)
+        return ERR_INPUT_PROCESSING;
+
+    return return_code;
 }