Function getCachedLineInfo

src/cm/indentGuides.ts:135–155

(
	lineNumber: number,
	lineText: string,
	tabSize: number,
	cache: IndentLineCache,
)

}

function getCachedLineInfo(
	lineNumber: number,
	lineText: string,
	tabSize: number,
	cache: IndentLineCache,
): IndentLineInfo {
	const cached = cache.get(lineNumber);
	if (cached && cached.text === lineText && cached.tabSize === tabSize) {
		return cached;
	}

	const info = {
		text: lineText,
		tabSize,
		indentColumns: getLineIndentation(lineText, tabSize),
		leadingWhitespaceLength: getLeadingWhitespaceLength(lineText),
		blank: isBlankLine(lineText),
	};
	cache.set(lineNumber, info);
	return info;
}

/**
 * Build decorations for indent guides