private _buildAnchorCache()

in src/rule.ts [216:264]
45 lines of code
6 McCabe index (conditional complexity)

	private _buildAnchorCache(): IRegExpSourceAnchorCache {
		let A0_G0_result: string[] = [];
		let A0_G1_result: string[] = [];
		let A1_G0_result: string[] = [];
		let A1_G1_result: string[] = [];

		let pos: number,
			len: number,
			ch: string,
			nextCh: string;

		for (pos = 0, len = this.source.length; pos < len; pos++) {
			ch = this.source.charAt(pos);
			A0_G0_result[pos] = ch;
			A0_G1_result[pos] = ch;
			A1_G0_result[pos] = ch;
			A1_G1_result[pos] = ch;

			if (ch === '\\') {
				if (pos + 1 < len) {
					nextCh = this.source.charAt(pos + 1);
					if (nextCh === 'A') {
						A0_G0_result[pos + 1] = '\uFFFF';
						A0_G1_result[pos + 1] = '\uFFFF';
						A1_G0_result[pos + 1] = 'A';
						A1_G1_result[pos + 1] = 'A';
					} else if (nextCh === 'G') {
						A0_G0_result[pos + 1] = '\uFFFF';
						A0_G1_result[pos + 1] = 'G';
						A1_G0_result[pos + 1] = '\uFFFF';
						A1_G1_result[pos + 1] = 'G';
					} else {
						A0_G0_result[pos + 1] = nextCh;
						A0_G1_result[pos + 1] = nextCh;
						A1_G0_result[pos + 1] = nextCh;
						A1_G1_result[pos + 1] = nextCh;
					}
					pos++;
				}
			}
		}

		return {
			A0_G0: A0_G0_result.join(''),
			A0_G1: A0_G1_result.join(''),
			A1_G0: A1_G0_result.join(''),
			A1_G1: A1_G1_result.join('')
		};
	}