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2 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
 Tim Lingo
|
d9653b1a22 | ||
|
Tim Lingo
|
f1f52bcb2f |
Executable
+937
@@ -0,0 +1,937 @@
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#!/usr/bin/env python3
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"""state-key-audit.py — the analyzer behind scripts/verify-state-keys.sh.
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Read that script's header for WHY this exists (issue #129). This file is the
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HOW: a small El reader that resolves the key expression at every state_get /
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state_set site, including keys that are computed.
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WHAT IT PARSES
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El as this engine writes it: `fn f(a: T, b: T) -> T { ... }`, `let x: T = e`,
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`return e`, `if c { a } else { b }` as an expression, `+` concatenation,
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`"..."` with backslash escapes, `//` line comments. No block comments, no
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const/match/struct exist in this dialect (verified over the whole tree).
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KEY PATTERNS — the only two things a key expression can resolve to
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EXACT "soul_model" the whole key is known
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PREFIX "session_hist_" a known head, then runtime text
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(plus UNRESOLVED, which is a report line and never a failure)
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RESOLUTION — resolve_expr() returns a SET of patterns; unions are how branches,
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multiple returns, and multiple bindings of one name are represented.
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literal "k" -> {EXACT k}
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concat A + B -> fold left; all-static -> EXACT,
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static head + dynamic tail -> PREFIX
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if-expression if c {A} else {B} -> resolve(A) | resolve(B), except that
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str_eq(X,"") with X statically ""
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folds to the taken branch only
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call f(args) -> union over f's return expressions,
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with f's params bound to THIS call
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site's actual argument expressions
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local var let k = e; state_get(k)-> union over every `let k =` in the
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enclosing function
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parameter fn g(k) { state_get(k) }-> union over the argument at that
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position across every call site of g
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anything else json_get(...), env(...)-> UNRESOLVED
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Recursion is depth- and cycle-guarded; a guard trip yields UNRESOLVED, never a
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failure.
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COVERAGE — a read is satisfied when some write can produce the same key:
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read EXACT k <- write EXACT k, or write PREFIX p where k starts with p
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read PREFIX p <- write EXACT k where k starts with p, or write PREFIX q
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where p and q are prefixes of each other
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Deliberately permissive at the boundaries: a gate that cries wolf gets deleted.
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"""
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import os
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import re
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import sys
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MAX_DEPTH = 12
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# ── patterns ────────────────────────────────────────────────────────────────
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EXACT = "exact"
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PREFIX = "prefix"
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def pat_exact(s):
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return (EXACT, s)
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def pat_prefix(s):
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# A prefix with no static text at all carries no information; that is the
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# UNRESOLVED case, not a pattern.
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return (PREFIX, s) if s else None
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def covers(write, read):
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"""Can a write of pattern `write` produce a key that `read` reads?
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The prefix rule is DIRECTIONAL, and that direction is the whole point. A
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write namespace that is the same or BROADER than the read namespace covers
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it (write "rl:" covers read "rl:x"). A write namespace that is NARROWER does
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NOT (write "session_histv2_" does not cover read "session_hist_") — being
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permissive there re-opens the exact hole this gate exists to close: rename
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the producer, leave the readers, stay green. Verified with a control run
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that renames sessions.el's writer and leaves its four readers behind."""
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wk, wv = write
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rk, rv = read
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if rk == EXACT:
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return rv == wv if wk == EXACT else rv.startswith(wv)
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# read is a PREFIX: some key starting with rv is read
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if wk == EXACT:
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return wv.startswith(rv) # that one written key is in range
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return rv.startswith(wv) # write namespace same-or-broader
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# ── lexer ───────────────────────────────────────────────────────────────────
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TOK_STR, TOK_IDENT, TOK_PUNCT, TOK_NUM = "str", "ident", "punct", "num"
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IDENT_RE = re.compile(r"[A-Za-z_][A-Za-z0-9_]*")
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NUM_RE = re.compile(r"[0-9]+(\.[0-9]+)?")
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class Tok:
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__slots__ = ("kind", "val", "line")
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def __init__(self, kind, val, line):
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self.kind, self.val, self.line = kind, val, line
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def __repr__(self):
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return "%s(%r)@%d" % (self.kind, self.val, self.line)
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def lex(src):
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toks, i, n, line = [], 0, len(src), 1
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while i < n:
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c = src[i]
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if c == "\n":
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line += 1
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i += 1
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continue
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if c in " \t\r":
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i += 1
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continue
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if c == "/" and i + 1 < n and src[i + 1] == "/":
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while i < n and src[i] != "\n":
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i += 1
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continue
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if c == '"':
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j, buf = i + 1, []
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while j < n:
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if src[j] == "\\" and j + 1 < n:
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esc = src[j + 1]
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buf.append({"n": "\n", "t": "\t", "r": "\r"}.get(esc, esc))
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j += 2
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continue
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if src[j] == '"':
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break
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if src[j] == "\n":
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line += 1
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buf.append(src[j])
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j += 1
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toks.append(Tok(TOK_STR, "".join(buf), line))
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i = j + 1
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continue
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m = IDENT_RE.match(src, i)
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if m:
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toks.append(Tok(TOK_IDENT, m.group(0), line))
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i = m.end()
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continue
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m = NUM_RE.match(src, i)
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if m:
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toks.append(Tok(TOK_NUM, m.group(0), line))
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i = m.end()
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continue
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toks.append(Tok(TOK_PUNCT, c, line))
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i += 1
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return toks
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def match_close(toks, i, open_ch, close_ch):
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"""toks[i] is open_ch; return index of its matching close_ch."""
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depth = 0
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while i < len(toks):
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if toks[i].kind == TOK_PUNCT:
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if toks[i].val == open_ch:
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depth += 1
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elif toks[i].val == close_ch:
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depth -= 1
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if depth == 0:
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return i
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i += 1
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return len(toks) - 1
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# ── program model ───────────────────────────────────────────────────────────
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class Func:
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def __init__(self, name, path, line, params, toks, start, end):
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self.name, self.path, self.line = name, path, line
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self.params = params # [param name]
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self.toks = toks # the whole file's token list
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self.start, self.end = start, end # body token range, exclusive of braces
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self.lets = None # name -> [expr token ranges], lazily built
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class Site:
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def __init__(self, kind, path, line, func, arg_range, text):
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self.kind = kind # "get" | "set"
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self.path, self.line = path, line
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self.func = func
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self.arg_range = arg_range
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self.text = text # source text of the key expression
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self.pats = set()
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self.unresolved = False
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self.literal = None # set when the key expression is a bare literal
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class Program:
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def __init__(self):
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self.files = {} # path -> toks
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self.funcs = {} # name -> [Func] (El allows no overloads, but be safe)
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self.toplevel = [] # [Func] one per file, params=[]
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self.sites = [] # [Site]
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self.calls = {} # callee name -> [(Func caller, [arg ranges])]
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# -- loading ------------------------------------------------------------
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def load(self, path, rel):
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with open(path, "r", encoding="utf-8", errors="replace") as fh:
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src = fh.read()
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toks = lex(src)
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self.files[rel] = toks
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self._scan_funcs(rel, toks)
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def _scan_funcs(self, rel, toks):
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covered = []
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i = 0
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while i < len(toks):
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t = toks[i]
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if t.kind == TOK_IDENT and t.val == "fn" and i + 2 < len(toks) \
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and toks[i + 1].kind == TOK_IDENT and toks[i + 2].val == "(":
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name = toks[i + 1].val
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pclose = match_close(toks, i + 2, "(", ")")
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params = self._params(toks, i + 3, pclose)
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bopen = pclose + 1
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while bopen < len(toks) and toks[bopen].val != "{":
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bopen += 1
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bclose = match_close(toks, bopen, "{", "}")
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f = Func(name, rel, t.line, params, toks, bopen + 1, bclose)
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self.funcs.setdefault(name, []).append(f)
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covered.append((i, bclose))
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i = bclose + 1
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continue
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i += 1
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# everything outside a fn is the file's top-level "function"
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tl = Func("<toplevel:%s>" % rel, rel, 1, [], toks, 0, len(toks))
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tl.covered = covered
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self.toplevel.append(tl)
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@staticmethod
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def _params(toks, i, end):
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"""`a: T, b: T` -> ['a','b'] (top-level commas only)."""
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names, depth, expect = [], 0, True
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while i < end:
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t = toks[i]
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if t.kind == TOK_PUNCT and t.val in "([{":
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depth += 1
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elif t.kind == TOK_PUNCT and t.val in ")]}":
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depth -= 1
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elif depth == 0 and t.kind == TOK_PUNCT and t.val == ",":
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expect = True
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elif depth == 0 and expect and t.kind == TOK_IDENT:
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names.append(t.val)
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expect = False
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i += 1
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return names
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def func_at(self, rel, tok_index):
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for f in self.funcs_in(rel):
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if f.start <= tok_index < f.end:
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return f
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for f in self.toplevel:
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if f.path == rel:
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return f
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return None
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def funcs_in(self, rel):
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for fl in self.funcs.values():
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for f in fl:
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if f.path == rel:
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yield f
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# -- indexing -----------------------------------------------------------
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def index(self):
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for rel, toks in self.files.items():
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i = 0
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while i < len(toks):
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t = toks[i]
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if t.kind == TOK_IDENT and i + 1 < len(toks) and toks[i + 1].val == "(" \
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and t.val not in KEYWORDS \
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and not (i > 0 and toks[i - 1].kind == TOK_IDENT
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and toks[i - 1].val == "fn"):
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# ^ the `fn f(a: T)` declaration is not a call site; counting
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# it as one makes every parameter resolve to its own name
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# and reports the whole function UNRESOLVED.
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close = match_close(toks, i + 1, "(", ")")
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args = split_args(toks, i + 2, close)
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self.calls.setdefault(t.val, []).append(
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(self.func_at(rel, i), args, rel, t.line))
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if t.val in ("state_get", "state_set") and args:
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self.sites.append(Site(
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"get" if t.val == "state_get" else "set",
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rel, t.line, self.func_at(rel, i), args[0],
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render(toks, *args[0])))
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i += 1
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# -- resolution ---------------------------------------------------------
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def lets_of(self, f):
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if f.lets is not None:
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return f.lets
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f.lets = {}
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toks = f.toks
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skip = getattr(f, "covered", [])
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i = f.start
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while i < f.end:
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if any(a <= i <= b for a, b in skip):
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i = max(b for a, b in skip if a <= i <= b) + 1
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continue
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t = toks[i]
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if t.kind == TOK_IDENT and t.val == "let" and i + 1 < f.end \
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and toks[i + 1].kind == TOK_IDENT:
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name = toks[i + 1].val
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j = i + 2
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if j < f.end and toks[j].val == ":": # skip the type
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while j < f.end and toks[j].val != "=":
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j += 1
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if j < f.end and toks[j].val == "=":
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s = j + 1
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e = stmt_end(toks, s, f.end)
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f.lets.setdefault(name, []).append((s, e))
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i = e
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continue
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i += 1
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return f.lets
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def returns_of(self, ctx, depth=0, seen=None):
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"""The value expressions of a function, in the context it was CALLED in.
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Context-sensitive on purpose. `conv_hist_key` is written as a guard:
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if str_eq(session_id, "") { return "conv_history" }
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return "session_hist_" + session_id
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Collecting both returns flat would make state_set(conv_hist_key("")) — the
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dead handle_chat() write — claim to produce the session_hist_ namespace
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too. That is a producer this engine does not actually have, and claiming
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it would let the gate stay green if sessions.el's real writer vanished:
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a masking hole in the exact namespace #129 lives in. So a guard whose
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condition folds is honoured, and the branch not taken is dropped."""
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out = []
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self._values(ctx.toks, ctx.start, ctx.end, ctx, depth,
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seen if seen is not None else set(), out)
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return out
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def _values(self, toks, s, e, ctx, depth, seen, out):
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"""Append the value expressions of a statement sequence.
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Returns True when the sequence definitely returns (rest unreachable)."""
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if depth > MAX_DEPTH:
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return False
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i = s
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while i < e:
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t = toks[i]
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if t.kind == TOK_IDENT and t.val == "return":
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j = stmt_end(toks, i + 1, e)
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if j > i + 1:
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out.append((i + 1, j))
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return True
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if t.kind == TOK_IDENT and t.val == "let":
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i = stmt_end(toks, i + 2, e)
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continue
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if t.kind == TOK_IDENT and t.val == "if":
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i = self._if_stmt(toks, i, e, ctx, depth, seen, out)
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if i is True:
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return True
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continue
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if t.kind == TOK_PUNCT and t.val in "([{":
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i = match_close(toks, i, t.val,
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{"(": ")", "[": "]", "{": "}"}[t.val]) + 1
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continue
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en = stmt_end(toks, i, e)
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if en <= i:
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i += 1
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continue
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if en >= e: # trailing expression = the value
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out.append((i, en))
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i = en
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return False
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def _if_stmt(self, toks, i, e, ctx, depth, seen, out):
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"""Walk one if / else-if / else chain. Returns the next index, or True
|
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if the chain definitely returns on every reachable branch."""
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bopen = i + 1
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while bopen < e and toks[bopen].val != "{":
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bopen += 1
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if bopen >= e:
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return e
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bclose = match_close(toks, bopen, "{", "}")
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fold = self._fold_cond(toks, i + 1, bopen, ctx, depth, seen)
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j = bclose + 1
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else_s = else_e = None
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||||
if j < e and toks[j].kind == TOK_IDENT and toks[j].val == "else":
|
||||
if j + 1 < e and toks[j + 1].val == "{":
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ec = match_close(toks, j + 1, "{", "}")
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else_s, else_e = j + 2, ec
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j = ec + 1
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else: # `else if ...` — the rest of the chain
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else_s = j + 1
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else_e = stmt_end(toks, j + 1, e)
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j = else_e
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then_ret = else_ret = False
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if fold is not False:
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then_ret = self._values(toks, bopen + 1, bclose, ctx, depth + 1, seen, out)
|
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if fold is not True and else_s is not None:
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else_ret = self._values(toks, else_s, else_e, ctx, depth + 1, seen, out)
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if fold is True and then_ret:
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return True
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if fold is False and else_s is not None and else_ret:
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return True
|
||||
if fold is None and else_s is not None and then_ret and else_ret:
|
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return True
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return j
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def resolve(self, rng, func, depth=0, seen=None):
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"""-> (set of patterns, unresolved_flag)"""
|
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if seen is None:
|
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seen = set()
|
||||
if depth > MAX_DEPTH:
|
||||
return set(), True
|
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return self._expr(func.toks, rng[0], rng[1], func, depth, seen)
|
||||
|
||||
# -- expression walker --------------------------------------------------
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def _expr(self, toks, s, e, func, depth, seen):
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parts, cur, d = [], s, 0
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||||
i = s
|
||||
while i < e: # split on top-level '+'
|
||||
v = toks[i].val
|
||||
if toks[i].kind == TOK_PUNCT and v in "([{":
|
||||
d += 1
|
||||
elif toks[i].kind == TOK_PUNCT and v in ")]}":
|
||||
d -= 1
|
||||
elif d == 0 and toks[i].kind == TOK_PUNCT and v == "+" and i > s:
|
||||
parts.append((cur, i))
|
||||
cur = i + 1
|
||||
i += 1
|
||||
parts.append((cur, e))
|
||||
if len(parts) == 1:
|
||||
return self._primary(toks, s, e, func, depth, seen)
|
||||
|
||||
# concatenation: keep folding while every operand so far is EXACT
|
||||
head, unres = "", False
|
||||
static = True
|
||||
for (ps, pe) in parts:
|
||||
pats, u = self._primary(toks, ps, pe, func, depth, seen)
|
||||
exacts = {p[1] for p in pats if p[0] == EXACT}
|
||||
if static and len(exacts) == 1 and not u and len(pats) == 1:
|
||||
head += exacts.pop()
|
||||
continue
|
||||
if static and pats and all(p[0] == EXACT for p in pats) and len(pats) > 1:
|
||||
# a branchy static operand: keep the shared head only
|
||||
static = False
|
||||
head += os.path.commonprefix(sorted({p[1] for p in pats}))
|
||||
break
|
||||
static = False
|
||||
# first non-static operand: everything after it is runtime text
|
||||
if (ps, pe) == parts[0]:
|
||||
for p in pats:
|
||||
if p[0] == PREFIX:
|
||||
head = p[1]
|
||||
break
|
||||
if not head:
|
||||
unres = True
|
||||
break
|
||||
if static:
|
||||
return {pat_exact(head)}, False
|
||||
p = pat_prefix(head)
|
||||
return ({p} if p else set()), (unres or not p)
|
||||
|
||||
def _primary(self, toks, s, e, func, depth, seen):
|
||||
while s < e and toks[s].kind == TOK_PUNCT and toks[s].val == "(" \
|
||||
and match_close(toks, s, "(", ")") == e - 1:
|
||||
s, e = s + 1, e - 1
|
||||
if s >= e:
|
||||
return set(), True
|
||||
t = toks[s]
|
||||
|
||||
if t.kind == TOK_STR and e == s + 1:
|
||||
return {pat_exact(t.val)}, False
|
||||
|
||||
if t.kind == TOK_IDENT and t.val == "if":
|
||||
return self._if_expr(toks, s, e, func, depth, seen)
|
||||
|
||||
if t.kind == TOK_IDENT and s + 1 < e and toks[s + 1].val == "(":
|
||||
close = match_close(toks, s + 1, "(", ")")
|
||||
if close == e - 1:
|
||||
return self._call(toks, t.val, split_args(toks, s + 2, close),
|
||||
func, depth, seen)
|
||||
|
||||
if t.kind == TOK_IDENT and e == s + 1:
|
||||
return self._var(t.val, func, depth, seen)
|
||||
|
||||
return set(), True
|
||||
|
||||
def _if_expr(self, toks, s, e, func, depth, seen):
|
||||
bopen = s + 1
|
||||
while bopen < e and toks[bopen].val != "{":
|
||||
bopen += 1
|
||||
cond = (s + 1, bopen)
|
||||
bclose = match_close(toks, bopen, "{", "}")
|
||||
then_rng = block_tail(toks, bopen + 1, bclose) or (bopen + 1, bclose)
|
||||
|
||||
else_rng = None
|
||||
j = bclose + 1
|
||||
if j < e and toks[j].kind == TOK_IDENT and toks[j].val == "else":
|
||||
if j + 1 < e and toks[j + 1].val == "{":
|
||||
ec = match_close(toks, j + 1, "{", "}")
|
||||
else_rng = block_tail(toks, j + 2, ec) or (j + 2, ec)
|
||||
else:
|
||||
else_rng = (j + 1, e) # `else if ...`
|
||||
|
||||
taken = self._fold_cond(toks, cond[0], cond[1], func, depth, seen)
|
||||
rngs = []
|
||||
if taken is not False:
|
||||
rngs.append(then_rng)
|
||||
if taken is not True and else_rng:
|
||||
rngs.append(else_rng)
|
||||
|
||||
pats, unres = set(), False
|
||||
for r in rngs:
|
||||
p, u = self._expr(toks, r[0], r[1], func, depth + 1, seen)
|
||||
pats |= p
|
||||
unres = unres or u
|
||||
return pats, unres
|
||||
|
||||
def _fold_cond(self, toks, s, e, func, depth, seen):
|
||||
"""Constant-fold `str_eq(X, "")` / `!str_eq(X, "")` so a helper called with
|
||||
a literal (conv_hist_key("")) yields only the branch it really takes.
|
||||
Returns True / False / None(unknown)."""
|
||||
neg = False
|
||||
if s < e and toks[s].kind == TOK_PUNCT and toks[s].val == "!":
|
||||
neg, s = True, s + 1
|
||||
if not (s < e and toks[s].kind == TOK_IDENT and toks[s].val == "str_eq"
|
||||
and s + 1 < e and toks[s + 1].val == "("):
|
||||
return None
|
||||
close = match_close(toks, s + 1, "(", ")")
|
||||
if close != e - 1:
|
||||
return None
|
||||
args = split_args(toks, s + 2, close)
|
||||
if len(args) != 2:
|
||||
return None
|
||||
va, ua = self._expr(toks, args[0][0], args[0][1], func, depth + 1, seen)
|
||||
vb, ub = self._expr(toks, args[1][0], args[1][1], func, depth + 1, seen)
|
||||
if ua or ub or len(va) != 1 or len(vb) != 1:
|
||||
return None
|
||||
(ka, sa), (kb, sb) = va.pop(), vb.pop()
|
||||
if ka != EXACT or kb != EXACT:
|
||||
return None
|
||||
r = (sa == sb)
|
||||
return (not r) if neg else r
|
||||
|
||||
def _call(self, toks, name, args, func, depth, seen):
|
||||
cands = self.funcs.get(name)
|
||||
if not cands:
|
||||
return set(), True # builtin: json_get, env, ...
|
||||
pats, unres = set(), False
|
||||
for callee in cands:
|
||||
key = ("fn", callee.path, callee.name, tuple(args))
|
||||
if key in seen:
|
||||
unres = True
|
||||
continue
|
||||
seen = seen | {key}
|
||||
# bind the callee's params to THIS call site's argument expressions
|
||||
binding = {}
|
||||
for idx, pname in enumerate(callee.params):
|
||||
if idx < len(args):
|
||||
binding[pname] = (args[idx], func)
|
||||
callee_ctx = _Bound(callee, binding)
|
||||
for r in self.returns_of(callee_ctx, depth + 1, seen):
|
||||
p, u = self._expr(callee.toks, r[0], r[1], callee_ctx,
|
||||
depth + 1, seen)
|
||||
pats |= p
|
||||
unres = unres or u
|
||||
return pats, unres
|
||||
|
||||
def _var(self, name, func, depth, seen):
|
||||
real = func.func if isinstance(func, _Bound) else func
|
||||
|
||||
# 1. a parameter bound by the call site we came through
|
||||
if isinstance(func, _Bound) and name in func.binding:
|
||||
rng, caller_ctx = func.binding[name]
|
||||
return self._expr(caller_ctx.toks, rng[0], rng[1], caller_ctx,
|
||||
depth + 1, seen)
|
||||
|
||||
# 2. a local `let` in the enclosing function
|
||||
lets = self.lets_of(real)
|
||||
if name in lets:
|
||||
key = ("let", real.path, real.name, name)
|
||||
if key in seen:
|
||||
return set(), True
|
||||
seen = seen | {key}
|
||||
pats, unres = set(), False
|
||||
for rng in lets[name]:
|
||||
p, u = self._expr(real.toks, rng[0], rng[1], real, depth + 1, seen)
|
||||
pats |= p
|
||||
unres = unres or u
|
||||
return pats, unres
|
||||
|
||||
# 3. an unbound parameter -> look at every call site of the enclosing fn
|
||||
if name in real.params:
|
||||
key = ("param", real.path, real.name, name)
|
||||
if key in seen:
|
||||
return set(), True
|
||||
seen = seen | {key}
|
||||
idx = real.params.index(name)
|
||||
pats, unres = set(), False
|
||||
sites = self.calls.get(real.name, [])
|
||||
if not sites:
|
||||
return set(), True
|
||||
for caller, args, _rel, _line in sites:
|
||||
if caller is None or idx >= len(args):
|
||||
unres = True
|
||||
continue
|
||||
p, u = self._expr(caller.toks, args[idx][0], args[idx][1],
|
||||
caller, depth + 1, seen)
|
||||
pats |= p
|
||||
unres = unres or u
|
||||
return pats, unres
|
||||
|
||||
# 4. a file-level / cross-file top-level `let`
|
||||
for tl in self.toplevel:
|
||||
lets = self.lets_of(tl)
|
||||
if name in lets:
|
||||
key = ("let", tl.path, tl.name, name)
|
||||
if key in seen:
|
||||
return set(), True
|
||||
seen2 = seen | {key}
|
||||
pats, unres = set(), False
|
||||
for rng in lets[name]:
|
||||
p, u = self._expr(tl.toks, rng[0], rng[1], tl, depth + 1, seen2)
|
||||
pats |= p
|
||||
unres = unres or u
|
||||
return pats, unres
|
||||
|
||||
return set(), True
|
||||
|
||||
|
||||
class _Bound:
|
||||
"""A callee view that also knows what its params were called with."""
|
||||
|
||||
def __init__(self, func, binding):
|
||||
self.func, self.binding = func, binding
|
||||
self.toks, self.start, self.end = func.toks, func.start, func.end
|
||||
self.params, self.path, self.name = func.params, func.path, func.name
|
||||
|
||||
def __getattr__(self, k):
|
||||
return getattr(self.func, k)
|
||||
|
||||
|
||||
# ── token helpers ───────────────────────────────────────────────────────────
|
||||
def split_args(toks, s, e):
|
||||
out, cur, d = [], s, 0
|
||||
i = s
|
||||
while i < e:
|
||||
v = toks[i].val
|
||||
if toks[i].kind == TOK_PUNCT and v in "([{":
|
||||
d += 1
|
||||
elif toks[i].kind == TOK_PUNCT and v in ")]}":
|
||||
d -= 1
|
||||
elif d == 0 and toks[i].kind == TOK_PUNCT and v == ",":
|
||||
out.append((cur, i))
|
||||
cur = i + 1
|
||||
i += 1
|
||||
if cur < e:
|
||||
out.append((cur, e))
|
||||
return out
|
||||
|
||||
|
||||
STMT_START = {"let", "return", "if", "while", "for"}
|
||||
KEYWORDS = {"if", "while", "for", "return", "fn", "let", "else", "match"}
|
||||
|
||||
|
||||
def stmt_end(toks, s, limit):
|
||||
"""End of the expression starting at s: the next top-level statement
|
||||
boundary. El has no semicolons, so a newline that starts a new statement
|
||||
ends this one."""
|
||||
d, i = 0, s
|
||||
while i < limit:
|
||||
t = toks[i]
|
||||
if t.kind == TOK_PUNCT and t.val in "([":
|
||||
d += 1
|
||||
elif t.kind == TOK_PUNCT and t.val in ")]":
|
||||
d -= 1
|
||||
if d < 0:
|
||||
return i
|
||||
elif t.kind == TOK_PUNCT and t.val == "{":
|
||||
# a brace at depth 0 belongs to this expression only when it is an
|
||||
# if/else block that is part of it
|
||||
d += 1
|
||||
elif t.kind == TOK_PUNCT and t.val == "}":
|
||||
d -= 1
|
||||
if d < 0:
|
||||
return i
|
||||
elif d == 0 and t.kind == TOK_PUNCT and t.val == ",":
|
||||
return i
|
||||
elif d == 0 and i > s and t.kind == TOK_IDENT and t.val in STMT_START:
|
||||
if t.val == "if" and toks[i - 1].kind == TOK_IDENT and toks[i - 1].val == "else":
|
||||
i += 1
|
||||
continue
|
||||
return i
|
||||
elif d == 0 and i > s and t.kind == TOK_IDENT and t.val == "fn":
|
||||
return i
|
||||
i += 1
|
||||
return limit
|
||||
|
||||
|
||||
def block_tail(toks, s, e):
|
||||
"""The trailing expression of a block, if the block ends in one."""
|
||||
i, last = s, None
|
||||
while i < e:
|
||||
t = toks[i]
|
||||
if t.kind == TOK_IDENT and t.val in ("let", "return"):
|
||||
i = stmt_end(toks, i + 1, e)
|
||||
last = None
|
||||
continue
|
||||
if t.kind == TOK_PUNCT and t.val in "([{":
|
||||
i = match_close(toks, i, t.val, {"(": ")", "[": "]", "{": "}"}[t.val]) + 1
|
||||
continue
|
||||
st = i
|
||||
en = stmt_end(toks, i, e)
|
||||
if en <= st:
|
||||
i = st + 1
|
||||
continue
|
||||
last = (st, en)
|
||||
i = en
|
||||
return last
|
||||
|
||||
|
||||
def render(toks, s, e):
|
||||
out = []
|
||||
for t in toks[s:e]:
|
||||
out.append('"%s"' % t.val if t.kind == TOK_STR else t.val)
|
||||
return " ".join(out)
|
||||
|
||||
|
||||
# ── the gate ────────────────────────────────────────────────────────────────
|
||||
def collect(root, include_tests):
|
||||
files = []
|
||||
for dirpath, dirnames, filenames in os.walk(root):
|
||||
dirnames[:] = [d for d in dirnames
|
||||
if d not in ("dist", "vendor", ".git", "node_modules")]
|
||||
rel_dir = os.path.relpath(dirpath, root)
|
||||
if not include_tests and rel_dir.split(os.sep)[0] == "tests":
|
||||
continue
|
||||
for fn in sorted(filenames):
|
||||
if fn.endswith(".el"):
|
||||
rel = os.path.normpath(os.path.join(rel_dir, fn))
|
||||
files.append((os.path.join(dirpath, fn), rel))
|
||||
return sorted(files, key=lambda x: x[1])
|
||||
|
||||
|
||||
def is_bare_literal(prog, site):
|
||||
toks = prog.files[site.path]
|
||||
s, e = site.arg_range
|
||||
return e == s + 1 and toks[s].kind == TOK_STR
|
||||
|
||||
|
||||
def read_decl(path):
|
||||
"""A declaration file: one entry per line, `# ...` comments stripped."""
|
||||
out = []
|
||||
if not path or not os.path.exists(path):
|
||||
return out
|
||||
with open(path) as fh:
|
||||
for ln in fh:
|
||||
ln = ln.split("#", 1)[0].strip()
|
||||
if ln:
|
||||
out.append(ln)
|
||||
return out
|
||||
|
||||
|
||||
def opt(argv, name, default=None):
|
||||
for i, a in enumerate(argv):
|
||||
if a == name and i + 1 < len(argv):
|
||||
return argv[i + 1]
|
||||
return default
|
||||
|
||||
|
||||
def main(argv):
|
||||
root = os.path.abspath(argv[1]) if len(argv) > 1 and not argv[1].startswith("-") else "."
|
||||
include_tests = "--include-tests" in argv
|
||||
verbose = "--verbose" in argv
|
||||
baseline_path = opt(argv, "--baseline")
|
||||
external_path = opt(argv, "--external")
|
||||
|
||||
prog = Program()
|
||||
for path, rel in collect(root, include_tests):
|
||||
prog.load(path, rel)
|
||||
prog.index()
|
||||
for site in prog.sites:
|
||||
pats, unres = prog.resolve(site.arg_range, site.func)
|
||||
site.pats, site.unresolved = {p for p in pats if p}, unres
|
||||
if is_bare_literal(prog, site):
|
||||
site.literal = prog.files[site.path][site.arg_range[0]].val
|
||||
|
||||
writes = [s for s in prog.sites if s.kind == "set"]
|
||||
reads = [s for s in prog.sites if s.kind == "get"]
|
||||
write_pats = set()
|
||||
for w in writes:
|
||||
write_pats |= w.pats
|
||||
|
||||
# Declared host-set keys: written by something outside the El tree (an
|
||||
# operator, the installer, a host process). Each entry must carry a reason.
|
||||
external = []
|
||||
for ln in read_decl(external_path):
|
||||
parts = ln.split(None, 1)
|
||||
if len(parts) != 2 or parts[0] not in (EXACT, PREFIX):
|
||||
print("bad --external line (want `exact|prefix <key>`): %r" % ln,
|
||||
file=sys.stderr)
|
||||
return 2
|
||||
external.append((parts[0], parts[1]))
|
||||
write_pats |= set(external)
|
||||
|
||||
# F1 — a read of a key no write in the tree produces.
|
||||
f1 = []
|
||||
for r in reads:
|
||||
for p in sorted(r.pats):
|
||||
if not any(covers(w, p) for w in write_pats):
|
||||
f1.append((r, p))
|
||||
|
||||
# F2 — a key namespace owned by a helper, accessed by a hand-rolled literal.
|
||||
# This is the #129 shape: the producer moved behind conv_hist_key() and
|
||||
# one consumer kept spelling the old key out by hand.
|
||||
owners = {} # helper fn name -> its value set
|
||||
for s in prog.sites:
|
||||
toks = prog.files[s.path]
|
||||
a, b = s.arg_range
|
||||
if toks[a].kind == TOK_IDENT and a + 1 < b and toks[a + 1].val == "(" \
|
||||
and match_close(toks, a + 1, "(", ")") == b - 1 \
|
||||
and toks[a].val in prog.funcs:
|
||||
name = toks[a].val
|
||||
if name not in owners:
|
||||
vals = set()
|
||||
for callee in prog.funcs[name]:
|
||||
# No call context here on purpose: the OWNED namespace is
|
||||
# every key the helper can ever produce, over all call sites.
|
||||
for rng in prog.returns_of(callee):
|
||||
p, _ = prog._expr(callee.toks, rng[0], rng[1], callee, 0, set())
|
||||
vals |= {x for x in p if x}
|
||||
owners[name] = vals
|
||||
f2 = []
|
||||
for s in prog.sites:
|
||||
if s.literal is None:
|
||||
continue
|
||||
for owner, vals in sorted(owners.items()):
|
||||
for v in sorted(vals):
|
||||
if covers(v, pat_exact(s.literal)):
|
||||
f2.append((s, owner, v))
|
||||
break
|
||||
else:
|
||||
continue
|
||||
break
|
||||
|
||||
unresolved = [s for s in prog.sites if s.unresolved or not s.pats]
|
||||
|
||||
# Baseline signatures carry NO line number on purpose: an unrelated edit that
|
||||
# shifts a line must not un-mute an accepted finding (that is crying wolf),
|
||||
# but a GROWTH in count must not hide either. So a baseline entry is
|
||||
# `<file> <CODE> <detail> [xN]` and only the first N matches are muted.
|
||||
baseline, bad_baseline = {}, []
|
||||
for ln in read_decl(baseline_path):
|
||||
n, key = 1, ln
|
||||
parts = ln.rsplit(" x", 1)
|
||||
if len(parts) == 2 and parts[1].isdigit():
|
||||
key, n = parts[0].strip(), int(parts[1])
|
||||
baseline[key] = n
|
||||
|
||||
def sig(path, code, detail):
|
||||
return "%s %s %s" % (path, code, detail)
|
||||
|
||||
findings = []
|
||||
for r, p in f1:
|
||||
findings.append((sig(r.path, "DEAD-READ", "%s:%s" % p), r.line,
|
||||
" %s:%d state_get(%s)\n resolves to %s %r — no state_set in the tree produces it"
|
||||
% (r.path, r.line, r.text, p[0].upper(), p[1])))
|
||||
for s, owner, v in f2:
|
||||
findings.append((sig(s.path, "HAND-ROLLED", "%s<-%s()" % (s.literal, owner)), s.line,
|
||||
" %s:%d state_%s(\"%s\")\n %s() owns this key namespace (%s %r) — go through the helper, "
|
||||
"or a rename orphans this site silently" % (s.path, s.line, s.kind, s.literal, owner, v[0].upper(), v[1])))
|
||||
findings.sort(key=lambda f: (f[0], f[1]))
|
||||
|
||||
live, muted, budget = [], [], dict(baseline)
|
||||
for f in findings:
|
||||
if budget.get(f[0], 0) > 0:
|
||||
budget[f[0]] -= 1
|
||||
muted.append(f)
|
||||
else:
|
||||
live.append(f)
|
||||
stale = sorted(k for k, v in budget.items() if v > 0)
|
||||
|
||||
print("── state-key audit ─────────────────────────────────────────────")
|
||||
print("scanned %d .el files%s" % (len(prog.files),
|
||||
"" if include_tests else " (tests/ excluded)"))
|
||||
print("sites %d state_set, %d state_get" % (len(writes), len(reads)))
|
||||
print("keys %d distinct write patterns" % len(write_pats))
|
||||
print("")
|
||||
|
||||
if verbose:
|
||||
print("WRITE PATTERNS")
|
||||
for k, v in sorted(write_pats):
|
||||
print(" %-6s %s" % (k, v))
|
||||
print("")
|
||||
|
||||
if external:
|
||||
print("DECLARED HOST-SET (%d) — %s" % (len(external), external_path))
|
||||
for k, v in sorted(external):
|
||||
print(" %-6s %s" % (k, v))
|
||||
print("")
|
||||
|
||||
print("UNRESOLVED (%d) — reported, never fails the build" % len(unresolved))
|
||||
if not unresolved:
|
||||
print(" (none)")
|
||||
for s in sorted(unresolved, key=lambda x: (x.path, x.line)):
|
||||
print(" %s:%d state_%s(%s)%s"
|
||||
% (s.path, s.line, s.kind, s.text,
|
||||
" [partial: %s]" % ", ".join("%s %r" % p for p in sorted(s.pats))
|
||||
if s.pats else ""))
|
||||
print("")
|
||||
|
||||
if muted:
|
||||
print("BASELINED (%d) — pre-existing debt accepted in %s. NOT clean; fix these."
|
||||
% (len(muted), baseline_path))
|
||||
for sg, line, _ in muted:
|
||||
print(" %s (line %d)" % (sg, line))
|
||||
print("")
|
||||
if stale:
|
||||
print("STALE BASELINE (%d) — entries that no longer match anything; delete them:"
|
||||
% len(stale))
|
||||
for sg in stale:
|
||||
print(" %s" % sg)
|
||||
print("")
|
||||
|
||||
print("FINDINGS (%d)" % len(live))
|
||||
if not live:
|
||||
print(" (none)")
|
||||
for _, _, body in live:
|
||||
print(body)
|
||||
print("")
|
||||
|
||||
if live:
|
||||
print("FAIL: %d state-key finding(s). See scripts/verify-state-keys.sh "
|
||||
"for why this gate exists (issue #129)." % len(live))
|
||||
return 1
|
||||
print("PASS: every resolvable state_get key has a producer, and no key "
|
||||
"namespace is spelled two ways.")
|
||||
return 0
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
sys.exit(main(sys.argv))
|
||||
@@ -0,0 +1,28 @@
|
||||
# state-key-baseline.txt — findings that already existed when this gate landed
|
||||
# (2026-08-07). Each one is a REAL defect of the #129 class, not a false
|
||||
# positive. They are muted only so the gate can be turned on today instead of
|
||||
# being deferred until the debt is paid; every run still prints them under
|
||||
# BASELINED with the word "debt".
|
||||
#
|
||||
# THIS FILE SHOULD ONLY EVER SHRINK. Adding a line means you are shipping a
|
||||
# known silent-"" read. If you must, date it and say why in the comment.
|
||||
#
|
||||
# format: <file> <CODE> <detail> [xN] # N = how many sites are accepted
|
||||
# No line numbers on purpose: an unrelated edit must not un-mute an accepted
|
||||
# finding, but a GROWTH in count is NOT muted — the extra site fails the build.
|
||||
#
|
||||
chat.el DEAD-READ exact:soul_identity x5
|
||||
# ^ soul.el used to run `state_set("soul_identity", soul_identity)`. It was
|
||||
# deleted on 2026-05-13 in b163fa6 ("feat(awareness): route ISE writes to HTTP
|
||||
# Engram ..."), a commit about something else entirely, and the five readers in
|
||||
# chat.el were left behind. Since that date build_system_prompt (737), the
|
||||
# vision handler (1745), the agentic system prompt (2620), the council
|
||||
# transcript handler (3425) and 3480 have all been prefixing "" — exactly the
|
||||
# #129 shape, found by this gate on its first run. Sites: 737, 1745, 2620,
|
||||
# 3425, 3480. Fix = restore the boot-time write or delete the reads; not done
|
||||
# here because this branch must not change engine behaviour.
|
||||
|
||||
studio.el DEAD-READ exact:soul_principal x1
|
||||
# ^ studio.el:57 dharma_registry() emits "principal":"" on every call — no
|
||||
# producer has ever existed in the tree's history (git log -S finds none).
|
||||
# Never-wired rather than orphaned, same silent-"" result.
|
||||
@@ -0,0 +1,16 @@
|
||||
# state-key-external.txt — state keys the engine READS but deliberately never
|
||||
# WRITES, because a host outside the El tree sets them (an operator, the
|
||||
# installer, a deployment env). Read scripts/verify-state-keys.sh for why this
|
||||
# list has to exist and why it has to stay short.
|
||||
#
|
||||
# THE RULE FOR ADDING A LINE: the read site must already treat "" as a defined
|
||||
# default (`if str_eq(x, "") { <default> }`) AND the source must say so in a
|
||||
# comment. "I could not find the writer" is NOT a reason — that is the #129
|
||||
# defect, and it belongs in state-key-baseline.txt with a date, not here.
|
||||
#
|
||||
# format: exact|prefix <key> # why, and where the source says so
|
||||
#
|
||||
exact soul_rate_limit # routes.el:59-61 — "configurable via soul state key ... Falls back to 60 req/min if not set."
|
||||
exact web_search_tool_version # chat.el:1884-1910 — version lives in state "so a future bump is a config write, not a recompile"; defaults to web_search_20250305
|
||||
exact platform_auth # stewardship.el:92 — host-set capability flag; fail-CLOSED (anything but "true" denies the platform tool)
|
||||
exact security_research_authorized # awareness.el:991-996 — state override for env SECURITY_RESEARCH_TOKEN; fail-closed, defaults false
|
||||
Executable
+118
@@ -0,0 +1,118 @@
|
||||
#!/usr/bin/env bash
|
||||
# verify-state-keys.sh — the state-key gate. Retires a defect class at build time.
|
||||
#
|
||||
# ── WHY THIS EXISTS. DO NOT DELETE IT AS NOISE. ──────────────────────────────
|
||||
#
|
||||
# The engine keeps runtime values in a key-value store: state_set("k", v) writes,
|
||||
# state_get("k") reads. A read of a key that NOTHING writes returns an empty
|
||||
# string. Silently. No error, no warning, no log line. The El compiler cannot see
|
||||
# it, no test sees it, and the product keeps running — just with a hole in it.
|
||||
#
|
||||
# That is how issue #129 happened. ff421d3 (2026-08-05) correctly moved
|
||||
# conversation history to a per-session key behind conv_hist_key(session_id). One
|
||||
# consumer did not move with it: the agentic path's L1 safety screen kept reading
|
||||
# the old anonymous "conv_history" bucket. The desktop app always mints a session
|
||||
# id, so history was always written under session_hist_<id> and that read always
|
||||
# returned "". The half of the crisis score that receives history is the
|
||||
# ESCALATION half — the one that exists for distress building across several
|
||||
# turns, where no single message trips the bell on its own. It scored 0 on every
|
||||
# real conversation for two days, and nothing failed.
|
||||
#
|
||||
# The line that broke carried a comment describing this exact bug being fixed
|
||||
# once already, under issue #9. A comment is not a gate. This is the gate.
|
||||
#
|
||||
# ── WHAT IT CHECKS ──────────────────────────────────────────────────────────
|
||||
#
|
||||
# DEAD-READ a state_get whose key resolves to something no state_set in the
|
||||
# tree produces. The direct form of the class.
|
||||
#
|
||||
# HAND-ROLLED a state_get/state_set that spells out a literal belonging to a
|
||||
# key namespace a helper function owns (e.g. "conv_history", owned
|
||||
# by conv_hist_key()). This is #129's actual shape: the producer
|
||||
# moved behind the helper and one consumer kept the old spelling
|
||||
# by hand. DEAD-READ alone does NOT catch #129, because the dead
|
||||
# handle_chat() still writes that key through the helper — so this
|
||||
# second check is the one that earns the gate its keep.
|
||||
#
|
||||
# ── WHY IT DOES NOT CRY WOLF ────────────────────────────────────────────────
|
||||
#
|
||||
# Keys are usually COMPUTED, not literal, so a naive grep would flood and get
|
||||
# switched off within a day. scripts/state-key-audit.py resolves computed keys:
|
||||
# string concatenation (matched on the static prefix), helper functions (resolved
|
||||
# to their possible return values), keys built into a local variable, and keys
|
||||
# arriving as a function parameter (resolved through the call sites). Where a key
|
||||
# genuinely cannot be resolved it is printed under UNRESOLVED and does NOT fail
|
||||
# the build — visible, never silently ignored. Keep that list short.
|
||||
#
|
||||
# On this tree it resolves 278 of 278 sites: UNRESOLVED is 0 and FINDINGS is 0.
|
||||
#
|
||||
# Two declaration files, both of which should only ever shrink:
|
||||
# scripts/state-key-external.txt keys a host outside the El tree writes
|
||||
# scripts/state-key-baseline.txt findings that predate the gate (real debt)
|
||||
#
|
||||
# ── PROVEN TO DISCRIMINATE (2026-08-07) ─────────────────────────────────────
|
||||
#
|
||||
# 1. Synthetic: a scratch copy of this tree with agentic_safety_screen reverted
|
||||
# to the pre-fix state_get("conv_history") — ONE line, nothing else — FAILS
|
||||
# with `chat.el:2536 ... conv_hist_key() owns this key namespace`. The tree
|
||||
# as shipped PASSES. One variable, opposite verdicts.
|
||||
# 2. Independent: run read-only against origin/feat/soul-openai-tools-v2, which
|
||||
# carries the same defect on its own, the gate reported chat.el:2937 — the
|
||||
# exact line 43d0449's commit message had named by hand. Against that
|
||||
# branch's fix (origin/fix/129-on-openai-tools) it passes.
|
||||
# 3. Producer-moved controls: renaming the sole writer of an EXACT key
|
||||
# (soul_model) orphans 3 readers across 3 files; renaming the sole writer of
|
||||
# a PREFIX namespace (agent_workspace_root_*) orphans 3 readers — including
|
||||
# when the producer moves to a NARROWER namespace, which an earlier,
|
||||
# sloppier prefix rule let through.
|
||||
#
|
||||
# It also found, on its first run, a defect nobody was looking for: soul.el's
|
||||
# `state_set("soul_identity", ...)` was deleted on 2026-05-13 in b163fa6 (a
|
||||
# commit about awareness/ISE writes) and five readers in chat.el were left
|
||||
# behind — the system prompt, the vision handler, the agentic prompt and the
|
||||
# council handler have been prefixing "" ever since. See state-key-baseline.txt.
|
||||
#
|
||||
# ── SAFETY ──────────────────────────────────────────────────────────────────
|
||||
# Pure static read of .el sources. Starts nothing, opens no port, touches no
|
||||
# daemon, and never reads or writes ~/.neuron.
|
||||
#
|
||||
# ── USAGE ───────────────────────────────────────────────────────────────────
|
||||
# scripts/verify-state-keys.sh gate the repo (honours baseline)
|
||||
# scripts/verify-state-keys.sh --strict ignore the baseline: show the debt
|
||||
# scripts/verify-state-keys.sh --verbose also dump every write pattern
|
||||
# scripts/verify-state-keys.sh --root DIR audit a different tree
|
||||
# exit 0 = clean; 1 = finding(s); 2 = the gate itself could not run.
|
||||
set -uo pipefail
|
||||
|
||||
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
|
||||
ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
|
||||
STRICT=0
|
||||
PASS_THROUGH=()
|
||||
|
||||
while [ $# -gt 0 ]; do
|
||||
case "$1" in
|
||||
--strict) STRICT=1; shift ;;
|
||||
--root) ROOT="${2:?--root needs a directory}"; shift 2 ;;
|
||||
-h|--help) awk 'NR>1 && /^#/ {print; next} NR>1 {exit}' "${BASH_SOURCE[0]}"; exit 0 ;;
|
||||
*) PASS_THROUGH+=("$1"); shift ;;
|
||||
esac
|
||||
done
|
||||
|
||||
command -v python3 >/dev/null 2>&1 || {
|
||||
echo "[state-keys] CANNOT RUN: python3 not found" >&2; exit 2; }
|
||||
[ -d "$ROOT" ] || { echo "[state-keys] CANNOT RUN: no such tree: $ROOT" >&2; exit 2; }
|
||||
|
||||
AUDIT="$SCRIPT_DIR/state-key-audit.py"
|
||||
[ -f "$AUDIT" ] || { echo "[state-keys] CANNOT RUN: missing $AUDIT" >&2; exit 2; }
|
||||
|
||||
ARGS=("$ROOT" "--external" "$SCRIPT_DIR/state-key-external.txt")
|
||||
[ "$STRICT" -eq 0 ] && ARGS+=("--baseline" "$SCRIPT_DIR/state-key-baseline.txt")
|
||||
[ ${#PASS_THROUGH[@]} -gt 0 ] && ARGS+=("${PASS_THROUGH[@]}")
|
||||
|
||||
python3 "$AUDIT" "${ARGS[@]}"
|
||||
RC=$?
|
||||
if [ "$RC" -gt 1 ]; then
|
||||
echo "[state-keys] CANNOT RUN: the audit itself failed (exit $RC)" >&2
|
||||
exit 2
|
||||
fi
|
||||
exit "$RC"
|
||||
Reference in New Issue
Block a user