import t
import stdio
import string
import testcheck

# 定义结构体
class Point(t.Struct):
    x: t.CInt
    y: t.CInt

class Rect(t.Struct):
    origin: Point
    size: Point

class Node(t.Struct):
    value: t.CInt
    next: t.CPtr | t.CVoid  # Node* 类型

def test_struct_basic():
    testcheck.section("Test 1: struct basic")
    p: Point = Point()
    p.x = 10
    p.y = 20
    testcheck.check(p.x == 10 and p.y == 20, "struct basic (x=10 y=20)", "struct basic (x y expect 10 20)")

def test_struct_nested():
    testcheck.section("Test 2: struct nested")
    r: Rect = Rect()
    r.origin.x = 1
    r.origin.y = 2
    r.size.x = 100
    r.size.y = 200
    testcheck.check(r.origin.x == 1 and r.origin.y == 2 and r.size.x == 100 and r.size.y == 200, "struct nested (origin=1,2 size=100,200)", "struct nested (mismatch)")

def test_struct_pointer():
    testcheck.section("Test 3: struct pointer")
    p: Point = Point()
    p.x = 42
    p.y = 84
    # 取结构体指针
    pp: Point | t.CPtr = t.CPtr(t.CVoid(t.CUInt64T(p), t.CPtr))
    # 通过指针修改
    pp.x = 100
    pp.y = 200
    # 检查原始结构体是否被修改
    testcheck.check(p.x == 100 and p.y == 200, "struct pointer (x=100 y=200)", "struct pointer (x y expect 100 200)")

def test_struct_param():
    testcheck.section("Test 4: struct as parameter")
    p: Point = Point()
    p.x = 5
    p.y = 15
    sum_val: t.CInt = point_sum(p)
    testcheck.check(sum_val == 20, "struct param (sum=20)", "struct param (sum expect 20)")

def point_sum(p: Point) -> t.CInt:
    return p.x + p.y

def test_struct_array():
    testcheck.section("Test 5: struct array")
    # 分配结构体数组
    buf: t.CUInt8T | t.CPtr = w32.win32memory.VirtualAlloc(t.CVoid(0, t.CPtr), 256, 12288, 4)
    if t.CUInt64T(buf) == 0:
        stdio.printf("SKIP: VirtualAlloc returned NULL\n")
        return
    string.memset(buf, 0, 256)
    # 将缓冲区转为 Point 数组
    pts: Point | t.CPtr = (Point | t.CPtr)(t.CVoid(t.CUInt64T(buf), t.CPtr))
    pts[0].x = 1
    pts[0].y = 2
    pts[1].x = 3
    pts[1].y = 4
    total: t.CInt = pts[0].x + pts[0].y + pts[1].x + pts[1].y
    testcheck.check(total == 10, "struct array (total=10)", "struct array (total expect 10)")

import w32.win32memory

def main() -> t.CInt:
    testcheck.begin("StructTest: 结构体操作基准测试")
    test_struct_basic()
    test_struct_nested()
    test_struct_pointer()
    test_struct_param()
    test_struct_array()
    return testcheck.end()
