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Merge bf9183269b into 37cfd2144b

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Andrew Pimenov 2026-09-10 18:12:55 +03:00 • committed by GitHub
commit f669a50234
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1 changed files with 17 additions and 7 deletions
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24
src/engine/parser.ts
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@ -98,15 +98,25 @@ function filterNoiseTokens(toks: Token[], knownVars: Set<string>): Token[] {
function tryParseGoalSeek(filtered: Token[], knownVars: Set<string>): Node | null {
// Goal seek: `? * 1.2 = 1000` → find x where lhs(x) = rhs(x)
const hasUnknown = filtered.some((tk) => tk.t === "unknown");
if (hasUnknown) {
const assignIdx = filtered.findIndex((tk) => tk.t === "assign");
if (assignIdx >= 0) {
const lhs = new Parser(filtered.slice(0, assignIdx), knownVars).parseSeq();
const rhs = new Parser(filtered.slice(assignIdx + 1), knownVars).parseSeq();
if (lhs && rhs) return { k: "goalseek", lhs, rhs };
let hasUnknown = false;
let assignIdx = -1;
const len = filtered.length;
for (let i = 0; i < len; i++) {
const t = filtered[i].t;
if (t === "unknown") {
hasUnknown = true;
if (assignIdx !== -1) break;
} else if (t === "assign" && assignIdx === -1) {
assignIdx = i;
if (hasUnknown) break;
}
}
if (hasUnknown && assignIdx >= 0) {
const lhs = new Parser(filtered.slice(0, assignIdx), knownVars).parseSeq();
const rhs = new Parser(filtered.slice(assignIdx + 1), knownVars).parseSeq();
if (lhs && rhs) return { k: "goalseek", lhs, rhs };
}
return null;
}