private scanOctalLiteral()

in src/scanner.ts [723:759]
31 lines of code
8 McCabe index (conditional complexity)

    private scanOctalLiteral(prefix: string, start: number): RawToken {
        let num = '';
        let octal = false;

        if (Character.isOctalDigit(prefix.charCodeAt(0))) {
            octal = true;
            num = '0' + this.source[this.index++];
        } else {
            ++this.index;
        }

        while (!this.eof()) {
            if (!Character.isOctalDigit(this.source.charCodeAt(this.index))) {
                break;
            }
            num += this.source[this.index++];
        }

        if (!octal && num.length === 0) {
            // only 0o or 0O
            this.throwUnexpectedToken();
        }

        if (Character.isIdentifierStart(this.source.charCodeAt(this.index)) || Character.isDecimalDigit(this.source.charCodeAt(this.index))) {
            this.throwUnexpectedToken();
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt(num, 8),
            octal: octal,
            lineNumber: this.lineNumber,
            lineStart: this.lineStart,
            start: start,
            end: this.index
        };
    }