Initial import of TransPyV

Test/App/ptr_test.py

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+import stdio
+import t, c
+
+
+# ============================================================
+# 简单指针 + 逻辑测试
+# ============================================================
+
+def ptr_test() -> int:
+    # 逻辑测试：if 语句
+    x: int = 10
+    if x:
+        stdio.printf("if: x is truthy\n")
+
+    if 1 == 1:
+        stdio.printf("if: 1==1 is truthy\n")
+
+    # While 循环 + 累加
+    i: int = 0
+    total: int = 0
+    while i < 5:
+        total = total + i
+        i = i + 1
+    stdio.printf("while: total=%d i=%d\n", total, i)
+
+    # For 循环
+    for j in range(5):
+        stdio.printf("for: j=%d\n", j)
+
+    # Break 测试
+    for k in range(10):
+        if k == 3:
+            break
+        stdio.printf("break: k=%d\n", k)
+
+    # Continue 测试
+    for m in range(5):
+        if m == 2:
+            continue
+        stdio.printf("continue: m=%d\n", m)
+
+    # 布尔运算 and（短路求值）
+    if x > 5 and x < 100:
+        stdio.printf("bool: x>5 and x<100 is true\n")
+
+    # 布尔运算 or（短路求值）
+    if x > 100 or x > 5:
+        stdio.printf("bool: x>100 or x>5 is true\n")
+
+    # ============================================================
+    # 指针 + c.Deref / c.DerefAs 测试
+    # ============================================================
+
+    # 字符串遍历: while c.Deref(p) != 0
+    s: str = "hello"
+    sp: str = s
+    slen: int = 0
+    while c.Deref(sp) != 0:
+        slen = slen + 1
+        sp = sp + 1
+    stdio.printf("ptr: len(hello)=%d\n", slen)
+
+    # c.DerefAs 写入字符（使用 c.Addr 获取栈变量地址，字符串字面量是只读的）
+    v: int = 65  # 'A'
+    px: str = c.Addr(v)
+    c.DerefAs(px, 88)  # *px = 88
+    stdio.printf("ptr: after DerefAs v=%d\n", v)
+
+    # 遍历字符串并累加字符值
+    p2: str = "ABC"
+    total_ch: int = 0
+    while c.Deref(p2) != 0:
+        total_ch = total_ch + c.Deref(p2)
+        p2 = p2 + 1
+    stdio.printf("ptr: sum(A,B,C)=%d\n", total_ch)
+
+    # ============================================================
+    # c.Load 测试: *a = *b（加载源指针的值，存储到目标指针）
+    # ============================================================
+
+    # 基本复制: v2 = v1
+    v1: int = 42
+    v2: int = 0
+    c.Load(c.Addr(v2), c.Addr(v1))
+    stdio.printf("ptr: c.Load v2=%d (expected 42)\n", v2)
+    if v2 != 42:
+        stdio.printf("[FAIL] c.Load expected 42 got %d\n", v2)
+        return 1
+
+    # 覆盖已有值: v3 = v4
+    v3: int = 100
+    v4: int = 200
+    c.Load(c.Addr(v3), c.Addr(v4))
+    stdio.printf("ptr: c.Load overwrite v3=%d (expected 200)\n", v3)
+    if v3 != 200:
+        stdio.printf("[FAIL] c.Load overwrite expected 200 got %d\n", v3)
+        return 1
+
+    # 验证源不被修改: v5 保持原值
+    v5: int = 999
+    v6: int = 0
+    c.Load(c.Addr(v6), c.Addr(v5))
+    stdio.printf("ptr: c.Load src unchanged v5=%d v6=%d (expected 999, 999)\n", v5, v6)
+    if v5 != 999:
+        stdio.printf("[FAIL] c.Load src changed v5=%d\n", v5)
+        return 1
+    if v6 != 999:
+        stdio.printf("[FAIL] c.Load dst expected 999 got %d\n", v6)
+        return 1
+
+    return 0