Function parsePrimaryExpression

jsonpath.js:2170–2225

()

    // 11.1 Primary Expressions

    function parsePrimaryExpression() {
        var type, token, expr, startToken;

        if (match('(')) {
            return parseGroupExpression();
        }

        if (match('[')) {
            return parseArrayInitialiser();
        }

        if (match('{')) {
            return parseObjectInitialiser();
        }

        type = lookahead.type;
        startToken = lookahead;

        if (type === Token.Identifier) {
            expr =  delegate.createIdentifier(lex().value);
        } else if (type === Token.StringLiteral || type === Token.NumericLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            expr = delegate.createLiteral(lex());
        } else if (type === Token.Keyword) {
            if (matchKeyword('function')) {
                return parseFunctionExpression();
            }
            if (matchKeyword('this')) {
                lex();
                expr = delegate.createThisExpression();
            } else {
                throwUnexpected(lex());
            }
        } else if (type === Token.BooleanLiteral) {
            token = lex();
            token.value = (token.value === 'true');
            expr = delegate.createLiteral(token);
        } else if (type === Token.NullLiteral) {
            token = lex();
            token.value = null;
            expr = delegate.createLiteral(token);
        } else if (match('/') || match('/=')) {
            if (typeof extra.tokens !== 'undefined') {
                expr = delegate.createLiteral(collectRegex());
            } else {
                expr = delegate.createLiteral(scanRegExp());
            }
            peek();
        } else {
            throwUnexpected(lex());
        }

        return delegate.markEnd(expr, startToken);
    }

    // 11.2 Left-Hand-Side Expressions