更新

2026-03-30 01:04:46 +08:00
parent 050aa421b1
commit f627244b8f
5978 changed files with 1502187 additions and 2947 deletions
@@ -0,0 +1,44 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const CHAR_CODE_NEW_LINE = "\n".charCodeAt(0);
+
+/**
+ * @typedef {object} GeneratedSourceInfo
+ * @property {number=} generatedLine generated line
+ * @property {number=} generatedColumn generated column
+ * @property {string=} source source
+ */
+
+/**
+ * @param {string | undefined} source source
+ * @returns {GeneratedSourceInfo} source info
+ */
+const getGeneratedSourceInfo = (source) => {
+	if (source === undefined) {
+		return {};
+	}
+	const lastLineStart = source.lastIndexOf("\n");
+	if (lastLineStart === -1) {
+		return {
+			generatedLine: 1,
+			generatedColumn: source.length,
+			source,
+		};
+	}
+	let generatedLine = 2;
+	for (let i = 0; i < lastLineStart; i++) {
+		if (source.charCodeAt(i) === CHAR_CODE_NEW_LINE) generatedLine++;
+	}
+	return {
+		generatedLine,
+		generatedColumn: source.length - lastLineStart - 1,
+		source,
+	};
+};
+
+module.exports = getGeneratedSourceInfo;