Дмитрий
7f379bd6a2
Pure module — extracts options (numbered/lettered/bullets/AskUserQuestion) from last assistant message, detects user reference (position-based + substring), returns decision_provenance for the 3rd kind. 23/23 tests GREEN. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
119 lines
4.4 KiB
JavaScript
119 lines
4.4 KiB
JavaScript
/**
|
||
* observer-choice-detector.mjs
|
||
* Pure module — no I/O, no side effects.
|
||
* Detects `decision_provenance.kind = user_chose_from_options`.
|
||
*/
|
||
|
||
// ── extractOptions ────────────────────────────────────────────────────────────
|
||
|
||
const NUMBERED_RE = /^(\d+)[.\)]\s+(.+)$/;
|
||
const LETTERED_RE = /^([A-Za-zА-Яа-яЁё])[.\)]\s+(.+)$/;
|
||
const BULLET_RE = /^[-*]\s+(.+)$/;
|
||
|
||
function extractFromText(text) {
|
||
const lines = String(text).split(/\r?\n/);
|
||
const numbered = [];
|
||
const lettered = [];
|
||
const bulleted = [];
|
||
for (const line of lines) {
|
||
const trimmed = line.trim();
|
||
let m;
|
||
if ((m = NUMBERED_RE.exec(trimmed))) numbered.push(m[2].trim());
|
||
else if ((m = LETTERED_RE.exec(trimmed))) lettered.push(m[2].trim());
|
||
else if ((m = BULLET_RE.exec(trimmed))) bulleted.push(m[1].trim());
|
||
}
|
||
if (numbered.length >= 2) return numbered;
|
||
if (lettered.length >= 2) return lettered;
|
||
if (bulleted.length >= 2) return bulleted;
|
||
return null;
|
||
}
|
||
|
||
function extractFromAskUser(toolUse) {
|
||
if (!toolUse || toolUse.type !== 'tool_use' || toolUse.name !== 'AskUserQuestion') return null;
|
||
const questions = toolUse.input?.questions;
|
||
if (!Array.isArray(questions) || questions.length === 0) return null;
|
||
const options = questions[0]?.options;
|
||
if (!Array.isArray(options) || options.length < 2) return null;
|
||
return options.map((o) => o?.label).filter((l) => typeof l === 'string');
|
||
}
|
||
|
||
export function extractOptions(content) {
|
||
if (content == null) return null;
|
||
if (typeof content === 'string') return extractFromText(content);
|
||
if (typeof content === 'object') {
|
||
const fromTool = extractFromAskUser(content);
|
||
if (fromTool && fromTool.length >= 2) return fromTool;
|
||
if (Array.isArray(content)) {
|
||
for (const block of content) {
|
||
const r = extractOptions(block);
|
||
if (r) return r;
|
||
}
|
||
}
|
||
if (typeof content.text === 'string') return extractFromText(content.text);
|
||
}
|
||
return null;
|
||
}
|
||
|
||
// ── detectReference ───────────────────────────────────────────────────────────
|
||
|
||
const VERBS = ['делай', 'выбираю', 'выбери', 'беру', 'хочу', 'вариант', 'option', 'pick', 'choose'];
|
||
const VERBS_RE = new RegExp('^(?:' + VERBS.join('|') + ')\\s+', 'i');
|
||
|
||
const LATIN_TO_INDEX = {
|
||
a: 0, b: 1, c: 2, d: 3, e: 4, f: 5, g: 6, h: 7,
|
||
};
|
||
const CYR_TO_INDEX = {
|
||
'а': 0, 'б': 1, 'в': 2, 'г': 3, 'д': 4, 'е': 5, 'ж': 6, 'з': 7,
|
||
};
|
||
|
||
function tryPosition(prompt, options) {
|
||
const lowered = prompt.toLowerCase();
|
||
const stripped = lowered.replace(VERBS_RE, '');
|
||
const m = stripped.match(/^(\d+|[a-zа-я])(?=[\s,\.\):;-]|$)/);
|
||
if (!m) return null;
|
||
const token = m[1];
|
||
let idx;
|
||
if (/^\d+$/.test(token)) {
|
||
idx = parseInt(token, 10) - 1;
|
||
} else {
|
||
idx = LATIN_TO_INDEX[token] ?? CYR_TO_INDEX[token];
|
||
}
|
||
if (idx == null || idx < 0 || idx >= options.length) return null;
|
||
return { index: idx, label: options[idx] };
|
||
}
|
||
|
||
function trySubstring(prompt, options) {
|
||
const lowered = prompt.toLowerCase();
|
||
for (let i = 0; i < options.length; i++) {
|
||
const opt = String(options[i]).toLowerCase();
|
||
const words = opt.split(/\s+/).filter(Boolean);
|
||
if (words.length < 2) continue;
|
||
for (let n = Math.min(4, words.length); n >= 2; n--) {
|
||
const prefix = words.slice(0, n).join(' ');
|
||
if (lowered.includes(prefix)) return { index: i, label: options[i] };
|
||
}
|
||
}
|
||
return null;
|
||
}
|
||
|
||
export function detectReference(prompt, options) {
|
||
const text = String(prompt || '').trim();
|
||
if (!text || !Array.isArray(options) || options.length < 2) return null;
|
||
return tryPosition(text, options) ?? trySubstring(text, options);
|
||
}
|
||
|
||
// ── detectChoiceProvenance ────────────────────────────────────────────────────
|
||
|
||
export function detectChoiceProvenance(promptText, lastAssistantContent) {
|
||
const options = extractOptions(lastAssistantContent);
|
||
if (!options) return null;
|
||
const ref = detectReference(promptText, options);
|
||
if (!ref) return null;
|
||
return {
|
||
kind: 'user_chose_from_options',
|
||
node: ref.label,
|
||
options_offered: options.slice(),
|
||
claude_would_have_chosen: options[0],
|
||
};
|
||
}
|