Function parse

packages/lang-core/src/parser/parser.ts:406–426

(input: string, cat: ParamMap, rootName?: string)

 * @returns      ParseResult with root ElementNode (or null) and metadata
 */
export function parse(input: string, cat: ParamMap, rootName?: string): ParseResult {
  const trimmed = preprocess(input);
  if (!trimmed) return emptyResult();

  const { text, wasIncomplete } = autoClose(trimmed);
  const stmts = split(tokenize(text));
  if (!stmts.length) return emptyResult(wasIncomplete);

  const stmtMap = new Map<string, Statement>();
  let firstId = "";
  for (const s of stmts) {
    const expr = parseExpression(s.tokens);
    const stmt = classifyStatement(s, expr);
    stmtMap.set(s.id, stmt);
    if (!firstId) firstId = s.id;
  }
  // Derive from map to deduplicate — Map.set overwrites duplicates
  const typedStmts = [...stmtMap.values()];

  return buildResult(stmtMap, typedStmts, firstId, wasIncomplete, stmtMap.size, cat, rootName);
}

export interface StreamParser {
  /** Feed the next SSE/stream chunk and get the latest ParseResult. */