feat: 模块系统 mod + pub — 多文件编译支持

src/ast/ast.c

@@ -30,12 +30,14 @@ AstNode* ast_make_program(void* alloc, AstNode** fns, size_t fn_count,
 }
 
 AstNode* ast_make_function(void* alloc, const char* name, AstNode** params, size_t pcount,
-                           TypeKind ret, const char* ret_struct_name, AstNode* body, SourceLoc loc) {
+                           TypeKind ret, const char* ret_struct_name, AstNode* body,
+                           bool is_pub, SourceLoc loc) {
     NEW(alloc, AST_FUNCTION);
     n->as.function.name = name; n->as.function.params = params;
     n->as.function.param_count = pcount; n->as.function.return_type = ret;
     n->as.function.return_struct_type_name = ret_struct_name;
     n->as.function.body = body;
+    n->as.function.is_pub = is_pub;
     return n;
 }
 
@@ -255,3 +257,17 @@ AstNode* ast_make_method_call(void* alloc, AstNode* receiver, const char* method
     n->as.method_call.arg_count = count;
     return n;
 }
+
+AstNode* ast_make_mod_decl(void* alloc, const char* name, AstNode* sub_ast, SourceLoc loc) {
+    NEW(alloc, AST_MOD_DECL);
+    n->as.mod_decl.name = name;
+    n->as.mod_decl.ast = sub_ast;
+    return n;
+}
+
+AstNode* ast_make_use_decl(void* alloc, const char* path, const char* item, SourceLoc loc) {
+    NEW(alloc, AST_USE_DECL);
+    n->as.use_decl.path = path;
+    n->as.use_decl.item = item;
+    return n;
+}