defer support; llgo/ssa: IfThen

internal/runtime/z_defer.go

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package runtime
+
+// Defer presents defer statements in a function.
+type Defer struct {
+	proc func(uintptr)
+	bits uintptr
+	link *Defer
+}
+
+// DeferProc calls deferred statements.
+func DeferProc(d *Defer) {
+	for d != nil {
+		d.proc(d.bits)
+		d = d.link
+	}
+}