Convert codebase to C89 compatibility and update test scripts

v0/ast.h

@@ -4,15 +4,15 @@
 #ifndef AST_H
 #define AST_H
 
-#include <stdbool.h>
+#include "bool.h"
 #include <stddef.h>
 
 typedef struct {
-	/// @brief The name of the module being imported.
-	char* module_name;
+    /* @brief The name of the module being imported. */
+    char* module_name;
 
-	/// @brief Whether the import is public or not.
-	bool is_public;
+    /* @brief Whether the import is public or not. */
+    bool is_public;
 } ImportDeclaration;
 
 /**
@@ -20,14 +20,14 @@ typedef struct {
  * Every file matches an entire Module.
  */
 typedef struct {
-	/// @brief The name of the module.
-	char* name;
+    /* @brief The name of the module. */
+    char* name;
 
-	/// @brief The list of imports in the module.
-	ImportDeclaration* imports;
+    /* @brief The list of imports in the module. */
+    ImportDeclaration* imports;
 
-	/// @brief The number of imports in the module.
-	size_t import_count;
+    /* @brief The number of imports in the module. */
+    size_t import_count;
 } Module;
 
 #endif