private octalToDecimal()

in src/scanner.ts [507:527]

• 15 lines of code
• 6 McCabe index (conditional complexity)

    private octalToDecimal(ch: string) {
        // \0 is not octal escape sequence
        let octal = (ch !== '0');
        let code = octalValue(ch);

        if (!this.eof() && Character.isOctalDigit(this.source.charCodeAt(this.index))) {
            octal = true;
            code = code * 8 + octalValue(this.source[this.index++]);

            // 3 digits are only allowed when string starts
            // with 0, 1, 2, 3
            if ('0123'.indexOf(ch) >= 0 && !this.eof() && Character.isOctalDigit(this.source.charCodeAt(this.index))) {
                code = code * 8 + octalValue(this.source[this.index++]);
            }
        }

        return {
            code: code,
            octal: octal
        };
    }