frontend: implement function compilation

bshell/main.c

@@ -107,6 +107,17 @@ int main(int argc, const char **argv)
 		printf("----\n");
 
 		bshell_scriptblock_clear_text(block);
+		switch (node->n_type) {
+		case BSHELL_AST_FUNC: {
+			bshell_function *func = NULL;
+			bshell_compile_function(node, &func);
+			print_function(func);
+			bshell_runtime_define_function(rt, func);
+			bshell_function_unref(func);
+			break;
+		}
+
+		default: {
 			bshell_compile(node, block);
 			print_scriptblock(block, 0);
 
@@ -114,7 +125,15 @@ int main(int argc, const char **argv)
 			if (result.v_type != NULL) {
 				format_value_default(&result, fx_stdout);
 			}
+			break;
 		}
+		}
+
+		bshell_ast_node_destroy(node);
+	}
+
+	bshell_runtime_destroy(rt);
+	bshell_scriptblock_unref(block);
 
 	bshell_parse_ctx_cleanup(&parse);
 	bshell_lex_ctx_cleanup(&lex);
@@ -129,5 +148,7 @@ int main(int argc, const char **argv)
 		bshell_file_close(file);
 	}
 
+	bshell_cleanup_all_verbs();
+
 	return 0;
 }