function scanHexDigits()

in src/impl/scanner.ts [26:50]

• 25 lines of code
• 10 McCabe index (conditional complexity)

	function scanHexDigits(count: number, exact?: boolean): number {
		let digits = 0;
		let value = 0;
		while (digits < count || !exact) {
			let ch = text.charCodeAt(pos);
			if (ch >= CharacterCodes._0 && ch <= CharacterCodes._9) {
				value = value * 16 + ch - CharacterCodes._0;
			}
			else if (ch >= CharacterCodes.A && ch <= CharacterCodes.F) {
				value = value * 16 + ch - CharacterCodes.A + 10;
			}
			else if (ch >= CharacterCodes.a && ch <= CharacterCodes.f) {
				value = value * 16 + ch - CharacterCodes.a + 10;
			}
			else {
				break;
			}
			pos++;
			digits++;
		}
		if (digits < count) {
			value = -1;
		}
		return value;
	}