Function expressionList

packages/amis-formula/src/parser.ts:595–627

(startOP = '(', endOp = ')')

  }

  function expressionList(startOP = '(', endOp = ')'): ASTNodeOrNull {
    if (matchPunctuator(startOP)) {
      const start = token;
      let end: Token;
      next();
      const args: Array<any> = [];
      let state = argListStates.START;

      while (true) {
        if (state === argListStates.COMMA || !matchPunctuator(endOp)) {
          const arg = assert(expression());
          args.push(arg);
          state = argListStates.START;

          if (matchPunctuator(',')) {
            next();
            state = argListStates.COMMA;
          }
        } else if (matchPunctuator(endOp)) {
          end = token;
          next();
          break;
        }
      }
      return {
        type: 'expression-list',
        body: args,
        start: start.start,
        end: end!.end
      };
    }
    return null;
  }

  function argList(startOP = '(', endOp = ')'): ASTNodeOrNull {
    let count = 0;