ykxmz/_tests/test_no_orphan_methods.py

# -*- coding: utf-8 -*-
'''防回归：抓"定义了但从没被调用"的方法。

为什么值得单独一个测试：
    1.7.0 交付后用户装上发现**一片白屏**。根因是
        private void initTabs() { ... }      // 定义在第 937 行
    而 onCreate 里只调了 buildControlPanel()，**从头到尾没人调 initTabs()**。
    结果 tabDefs 为 null -> selectTab() 直接 return -> 内容区空白。

    这种错误编译能过、别的测试也能过，只有真机跑起来才看得见，
    所以必须静态查出来。

判定方法：
    统计方法名在文件里出现的次数（定义那一处也算）。
    只出现 1 次 = 只有定义没调用。

分两档：
    * **硬性失败**：关键路径上的方法（initTabs / 三个面板 / selectTab）。
      这些漏了就是白屏或功能全无，必须拦住。
    * **仅报告**：其它可疑方法。有些确实是历史遗留的死代码
      （下面的 KNOWN_DEAD 记录了已确认的），有些是接口回调
      （由框架调用，本文件里当然只有定义）。
      报告出来供清理，但不拦构建 —— 免得噪音太大没人看。
'''
from __future__ import annotations

import re
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent
MAIN = (ROOT / "android" / "src" / "com" / "lanremote" / "watch"
        / "MainActivity.java")

# 框架/接口回调：由 Android 或 RemoteClient 调用，本文件里只有定义是正常的
WHITELIST = {
    "onCreate", "onDestroy", "onResume", "onPause", "onStart", "onStop",
    "onRestart", "onNewIntent", "onSaveInstanceState", "onRestoreInstanceState",
    "onBackPressed", "onKeyDown", "onKeyUp", "onWindowFocusChanged",
    "onRequestPermissionsResult", "onActivityResult", "onOptionsItemSelected",
    "onCreateOptionsMenu", "onPrepareOptionsMenu", "onConfigurationChanged",
    "onTouchEvent", "onClick", "onLongClick", "onTouch", "onAnimationUpdate",
    "onAnimationStart", "onAnimationEnd", "onAnimationCancel", "onAnimationRepeat",
    "onPreDraw", "onGlobalLayout", "onScrollChanged", "onItemClick",
    "onItemSelected", "onNothingSelected", "onFocusChange", "onEditorAction",
    "run", "call", "get", "set", "equals", "hashCode", "toString",
    "uncaughtException", "afterTextChanged", "beforeTextChanged",
    "onTextChanged", "onProgressChanged", "onStartTrackingTouch",
    "onStopTrackingTouch", "onDateSet", "onTimeSet", "onDismiss",
    "onCancel", "onShow", "onKey", "onCreateDialog", "onPrepareDialog",
    "onReceive", "onServiceConnected", "onServiceDisconnected",
    "onBind", "onCreateView", "onViewCreated", "onDestroyView",
    "onAttach", "onDetach", "onActivityCreated", "onOptionsMenuClosed",
    "onContextItemSelected", "onCreateContextMenu", "handleMessage",
    "onChildViewAdded", "onChildViewRemoved", "onGlobalFocusChanged",
    "onLayoutChange", "onScrollStateChanged", "onScrolled",
    "onPageStarted", "onPageFinished", "shouldOverrideUrlLoading",
    "onReceivedError", "onDownloadStart", "onChildDraw",
    # RemoteClient.Listener 的实现
    "onDisconnected", "onEvent", "onFrame", "onProgress", "onLog",
}

# 已确认的历史遗留死代码：早期版本的实现，后来换成了别的写法，
# 函数留着但没人调。不影响功能，列出来是为了有朝一日清掉。
KNOWN_DEAD = {
    "buildFeatureTab": "旧的分页构建方式，已被 renderGroups() 取代",
    "pickFolder": "已被 pickFile() 取代",
    "pickClipHistory": "功能已移到服务端注册表",
    "confirmWallpaper": "功能已移到服务端注册表",
    "confirmMonitor": "功能已移到服务端注册表",
    "sendMedia": "已被 media() 取代",
    "promptRun": "已被 runFeature() 取代",
    "showInfo": "已被 feature_run 的 info 取代",
    "findSavedToken": "旧的重连逻辑，已被 RelayTransport 取代",
    "glassBackground": "旧的美化辅助函数，样式改成 glass() 后没人用了",
    "sp": "旧的字号辅助，已被 dp() 取代",
}

# 关键路径：这些漏了就是白屏 / 功能全无，必须硬性拦住
CRITICAL = ("buildConnectPanel", "buildControlPanel", "initTabs",
            "buildMirrorPanel", "buildLanPanel")

passed = 0
failed = 0


def check(name, ok, detail=""):
    global passed, failed
    if ok:
        passed += 1
        print("  [PASS] " + name)
    else:
        failed += 1
        print("  [FAIL] " + name + "  " + str(detail))


def defined_methods(text: str) -> list[str]:
    pattern = re.compile(
        r"(?:private|public|protected|static|final|\s)+"
        r"[\w<>\[\],.\s]+\s+(\w+)\s*\([^)]*\)\s*(?:throws [\w.,\s]+)?\{")
    names = []
    for match in pattern.finditer(text):
        name = match.group(1)
        if name in ("if", "for", "while", "switch", "catch", "synchronized",
                    "try", "return", "new"):
            continue
        names.append(name)
    return names


def main() -> int:
    check("MainActivity.java 在", MAIN.is_file())
    if not MAIN.is_file():
        return 1
    text = MAIN.read_text(encoding="utf-8")

    print()
    print("一、关键路径必须被调用（漏了就是白屏）")
    # initTabs 专项：白屏的根因就是它
    init_def = len(re.findall(r"private void initTabs\s*\(", text))
    init_use = len(re.findall(r"\binitTabs\s*\(\s*\)", text))
    check("initTabs() 有定义", init_def >= 1, f"定义 {init_def} 处")
    check("initTabs() 被调用（否则连上后一片白屏）",
          init_use >= 2, f"出现 {init_use} 次（1 次是定义，>1 才算被调用）")
    check("initTabs() 紧跟 buildControlPanel()",
          re.search(r"buildControlPanel\(\);\s*(?://[^\n]*\n\s*)*initTabs\(\);",
                    text) is not None,
          "必须在 buildControlPanel() 之后立刻调用")

    for method in CRITICAL:
        n = len(re.findall(r"\b" + method + r"\s*\(", text))
        check(f"{method}() 被调用", n > 1, f"出现 {n} 次")

    print()
    print("二、分页定义完整性")
    tab_names = re.findall(r'new TabDef\("([^"]+)"', text)
    check("定义了 10 个分页", len(tab_names) == 10, f"实际 {len(tab_names)} 个")
    print(f"      分页: {' '.join(tab_names)}")
    check("selectTab 有定义", "private void selectTab(" in text)
    check("selectTab 被调用", len(re.findall(r"\bselectTab\s*\(", text)) > 1)

    print()
    print("三、未调用方法扫描")
    names = defined_methods(text)
    orphans = []
    for name in sorted(set(names)):
        if name in WHITELIST or name in KNOWN_DEAD:
            continue
        n = len(re.findall(r"\b" + re.escape(name) + r"\s*\(", text))
        if n <= 1:
            orphans.append((name, n))

    check("没有**未知**的未调用方法", not orphans,
          "\n         ".join(f"{n}（{c} 次）" for n, c in orphans)
          if orphans else "")
    if orphans:
        print()
        print("      未知的未调用方法（可能是漏接的事件处理，也可能是新的死代码）：")
        for name, cnt in orphans:
            print(f"        {name}  (出现 {cnt} 次)")

    if KNOWN_DEAD:
        print()
        print(f"      已知死代码 {len(KNOWN_DEAD)} 个（不影响功能，待清理）：")
        for name, why in sorted(KNOWN_DEAD.items()):
            still = len(re.findall(r"\b" + re.escape(name) + r"\s*\(", text))
            mark = "" if still else "  [已删除]"
            print(f"        {name}: {why}{mark}")

    print()
    print("=" * 58)
    print(f"通过 {passed} 项，失败 {failed} 项")
    return 0 if failed == 0 else 1


if __name__ == "__main__":
    sys.exit(main())