stage1 重构测试且成功00-05

stage1/test05_control.spl

@@ -0,0 +1,79 @@
+/* ===== 模块3：控制流 =====
+ * test05_control — 分支与循环
+ * 难度：2/5
+ * 验证点：if/else、while、loop、break、continue
+ */
+fn main() i32 {
+    /* ---- if/else ---- */
+    var x: i32 = 10;
+    if x > 5 {
+        x = 0;
+    } else {
+        x = 1;
+    }
+    if x != 0 { ret 1; }
+
+    /* else 分支 */
+    var y: i32 = 1;
+    if y > 5 {
+        y = 10;
+    } else {
+        y = 20;
+    }
+    if y != 20 { ret 2; }
+
+    /* if 不带 else */
+    var z: i32 = 0;
+    if z == 0 {
+        z = 99;
+    }
+    if z != 99 { ret 3; }
+
+    /* ---- while ---- */
+    var i: i32 = 0;
+    while i < 5 {
+        i = i + 1;
+    }
+    if i != 5 { ret 4; }
+
+    /* while 条件为 false */
+    var j: i32 = 0;
+    while j > 0 {
+        j = j + 1;
+    }
+    if j != 0 { ret 5; }
+
+    /* ---- loop / break ---- */
+    var k: i32 = 0;
+    loop {
+        k = k + 1;
+        if k >= 3 { break; }
+    }
+    if k != 3 { ret 6; }
+
+    /* ---- continue ---- */
+    var n: i32 = 0;
+    var m: i32 = 0;
+    while n < 5 {
+        n = n + 1;
+        if n == 3 { continue; }
+        m = m + 1;
+    }
+    if n != 5 { ret 7; }
+    if m != 4 { ret 8; }
+
+    /* ---- 嵌套控制流 ---- */
+    var total: i32 = 0;
+    var p: i32 = 0;
+    while p < 3 {
+        var q: i32 = 0;
+        while q < 4 {
+            total = total + 1;
+            q = q + 1;
+        }
+        p = p + 1;
+    }
+    if total != 12 { ret 9; }
+
+    ret 0;
+}