146 lines
6.2 KiB
Python
146 lines
6.2 KiB
Python
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# -*- coding: utf-8 -*-
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"""main.lua 的静态体检 —— 编译前把「真机上才会炸」的几类错抓出来。
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S4e 那版的真机事故是：`segs/ddWrite/ddRead` 被放在 `slurp/sh` **之前**，
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于是函数体里引用的 `sh` 不是那个 local，而是**全局 nil**，一调用就
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`attempt to call a nil value (global 'sh')` —— 而且当时整条流水线全绿
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（Compiler.exe 只打包 Lua、不解析它）。所以本文件专门查：
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① 块配平（function/if/for/while/do/end/repeat/until）
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② **先用后声明**：某个名字在文件里是 `local`，但第一次调用发生在它声明之前
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③ 调用了既不是 local、也不在 Lua 标准库白名单里的名字（拼写错 / 忘了 local）
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④ 模板约定：4 个占位符各 1 次、`--[[` 只在文件头、以 `return ui\\n` 结尾
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（tools/s5e_verify.py 会从 .face 里反解 Lua，这几条是它定位 Lua 的前提）
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用法：python tools/s5e_lua_static.py [main.lua]
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"""
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import os, re, sys
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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from paths import PROJ
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from lua_balance import strip
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LUAC = os.path.join(PROJ, 'main.lua')
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# Lua 5.4 标准库 + 本项目用到的宿主全局（都不是拼写错）
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WHITELIST = set("""
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require pcall xpcall type pairs ipairs next select tostring tonumber rawget rawset
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rawequal rawlen setmetatable getmetatable error assert print unpack load
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string table math io os coroutine utf8 debug collectgarbage
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""".split())
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KEYWORDS = set("""
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and break do else elseif end false for function goto if in local nil not or
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repeat return then true until while
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""".split())
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REQUIRED_PH = ('__UIIMG__', '__PAY__', '__RB__', '__ROLE__')
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fail = 0
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def bad(msg):
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global fail
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fail += 1
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print(' FAIL ' + msg)
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def ck(cond, msg):
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print((' OK ' if cond else ' FAIL ') + msg)
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if not cond:
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global fail
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fail += 1
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def lineno(src, idx):
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return src.count('\n', 0, idx) + 1
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def decls(src, code):
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"""名字 -> 它在 code 里第一次被 local 声明（或作为函数参数出现）的位置。"""
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out = {}
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for m in re.finditer(r'\blocal\s+function\s+([A-Za-z_]\w*)', code):
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out.setdefault(m.group(1), m.start(1))
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for m in re.finditer(r'\blocal\s+([A-Za-z_][\w,\s]*?)\s*(?:=|$)', code, re.M):
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base = m.start(1)
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for piece in m.group(1).split(','):
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nm = piece.strip()
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if re.fullmatch(r'[A-Za-z_]\w*', nm):
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out.setdefault(nm, base)
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# 函数参数也是 local（`function(a, b)` / `function f(a)`），否则会误报
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for m in re.finditer(r'\bfunction\b\s*[A-Za-z_.:]*\s*\(([^)]*)\)', code):
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for piece in m.group(1).split(','):
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nm = piece.strip()
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if re.fullmatch(r'[A-Za-z_]\w*', nm):
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out.setdefault(nm, m.start())
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return out
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def calls(code):
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"""所有函数调用点（排除 `function NAME(` 这种定义）。"""
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out = []
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for m in re.finditer(r'(?<![\w.:])([A-Za-z_]\w*)\s*\(', code):
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head = code[max(0, m.start(1) - 12):m.start(1)]
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if re.search(r'\bfunction\s+$', head):
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continue # 定义，不是调用
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out.append((m.group(1), m.start(1)))
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return out
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def main():
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src = open(LUAC, encoding='utf-8').read()
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code = strip(src)
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print('=== tools/s5e_lua_static.py %s (%d B) ===' % (LUAC, len(src.encode('utf-8'))))
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print('\n[1] 块配平')
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def cnt(k):
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return len(re.findall(r'(?<![\w.])' + k + r'(?![\w])', code))
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do_standalone = cnt('do') - cnt('while') - cnt('for')
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openers = cnt('function') + cnt('if') + cnt('while') + cnt('for') + do_standalone
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ck(openers == cnt('end') and cnt('repeat') == cnt('until'),
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'openers=%d end=%d（function=%d if=%d for=%d while=%d do=%d）repeat=%d until=%d'
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% (openers, cnt('end'), cnt('function'), cnt('if'), cnt('for'), cnt('while'),
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do_standalone, cnt('repeat'), cnt('until')))
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print('\n[2] 先用后声明（真机上会变成 "call a nil value"）')
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d = decls(src, code)
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early, unknown = [], []
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for name, pos in calls(code):
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if name in KEYWORDS or name in WHITELIST:
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continue
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if name in d:
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if pos < d[name]:
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early.append((name, lineno(src, pos), lineno(src, d[name])))
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else:
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unknown.append((name, lineno(src, pos)))
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ck(not early, '没有"先调用后 local"：%s'
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% ('' if not early else ' / '.join('%s 调用@%d 声明@%d' % e for e in early)))
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ck(not unknown, '没有未声明的被调用名：%s'
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% ('' if not unknown else ' / '.join('%s@%d' % u for u in unknown)))
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print('\n[3] 模板约定（s5e_verify.py 靠这些从 .face 里反解 Lua）')
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for ph in REQUIRED_PH:
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ck(src.count(ph) == 1, '占位符 %s 出现 %d 次（要 1）' % (ph, src.count(ph)))
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ck(src.startswith('--[[--'), '文件以 --[[-- 开头')
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ck(src.count('--[[') == 1, '--[[ 只出现 %d 次（要 1，否则 verify 会从中间截 Lua）'
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% src.count('--[['))
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ck(src.endswith('return ui\n'), '以 return ui\\n 结尾')
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ck(src.count('return ui\n') == 1, 'return ui\\n 只出现 %d 次（要 1）' % src.count('return ui\n'))
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ck('local UIIMG = {' in src, '有 local UIIMG = {')
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print('\n[4] 与 s5e_verify.py 对齐的字面量')
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ck(re.search(r"local ROLE = '__ROLE__'", src) is not None, "local ROLE = '__ROLE__'")
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ck(re.search(r'local W, H = 480, 480', src) is not None, 'local W, H = 480, 480')
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m = re.search(r'local DEVS = \{([^}]*)\}', src)
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ck(m is not None and '/dev/health' in m.group(1),
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'DEVS 里有 health -> /dev/health：%s' % (m.group(1).strip() if m else None))
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ck("local DEV = DEVS.health" in src,
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'DEV 来自 DEVS.health（表里的键名真的被用于取节点，不是摆设）')
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paytbl = re.search(r'local PAYTBL = \{\n__PAY__\n__RB__\n\}', src)
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ck(paytbl is not None, 'PAYTBL 里只有 __PAY__ / __RB__ 两处占位符（没有硬编码节点名）')
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ck('466' not in src, '没有残留的 466（旧 S4e 尺寸）')
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print('\n=== %s ===' % ('全部通过' if not fail else '%d 项失败' % fail))
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return 1 if fail else 0
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if __name__ == '__main__':
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sys.exit(main())
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