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app_vue/node_modules/webpack-sources/lib/helpers/streamChunksOfSourceMap.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const getGeneratedSourceInfo = require("./getGeneratedSourceInfo");
+const getSource = require("./getSource");
+const readMappings = require("./readMappings");
+const splitIntoLines = require("./splitIntoLines");
+
+/** @typedef {import("../Source").RawSourceMap} RawSourceMap */
+/** @typedef {import("./getGeneratedSourceInfo").GeneratedSourceInfo} GeneratedSourceInfo */
+/** @typedef {import("./streamChunks").OnChunk} OnChunk */
+/** @typedef {import("./streamChunks").OnName} OnName */
+/** @typedef {import("./streamChunks").OnSource} OnSource */
+
+/**
+ * @param {string} source source
+ * @param {RawSourceMap} sourceMap source map
+ * @param {OnChunk} onChunk on chunk
+ * @param {OnSource} onSource on source
+ * @param {OnName} onName on name
+ * @returns {GeneratedSourceInfo} generated source info
+ */
+const streamChunksOfSourceMapFull = (
+	source,
+	sourceMap,
+	onChunk,
+	onSource,
+	onName
+) => {
+	const lines = splitIntoLines(source);
+	if (lines.length === 0) {
+		return {
+			generatedLine: 1,
+			generatedColumn: 0
+		};
+	}
+	const { sources, sourcesContent, names, mappings } = sourceMap;
+	for (let i = 0; i < sources.length; i++) {
+		onSource(
+			i,
+			getSource(sourceMap, i),
+			(sourcesContent && sourcesContent[i]) || undefined
+		);
+	}
+	if (names) {
+		for (let i = 0; i < names.length; i++) {
+			onName(i, names[i]);
+		}
+	}
+
+	const lastLine = lines[lines.length - 1];
+	const lastNewLine = lastLine.endsWith("\n");
+	const finalLine = lastNewLine ? lines.length + 1 : lines.length;
+	const finalColumn = lastNewLine ? 0 : lastLine.length;
+
+	let currentGeneratedLine = 1;
+	let currentGeneratedColumn = 0;
+
+	let mappingActive = false;
+	let activeMappingSourceIndex = -1;
+	let activeMappingOriginalLine = -1;
+	let activeMappingOriginalColumn = -1;
+	let activeMappingNameIndex = -1;
+
+	/**
+	 * @param {number} generatedLine generated line
+	 * @param {number} generatedColumn generated column
+	 * @param {number} sourceIndex source index
+	 * @param {number} originalLine original line
+	 * @param {number} originalColumn original column
+	 * @param {number} nameIndex name index
+	 * @returns {void}
+	 */
+	const onMapping = (
+		generatedLine,
+		generatedColumn,
+		sourceIndex,
+		originalLine,
+		originalColumn,
+		nameIndex
+	) => {
+		if (mappingActive && currentGeneratedLine <= lines.length) {
+			let chunk;
+			const mappingLine = currentGeneratedLine;
+			const mappingColumn = currentGeneratedColumn;
+			const line = lines[currentGeneratedLine - 1];
+			if (generatedLine !== currentGeneratedLine) {
+				chunk = line.slice(currentGeneratedColumn);
+				currentGeneratedLine++;
+				currentGeneratedColumn = 0;
+			} else {
+				chunk = line.slice(currentGeneratedColumn, generatedColumn);
+				currentGeneratedColumn = generatedColumn;
+			}
+			if (chunk) {
+				onChunk(
+					chunk,
+					mappingLine,
+					mappingColumn,
+					activeMappingSourceIndex,
+					activeMappingOriginalLine,
+					activeMappingOriginalColumn,
+					activeMappingNameIndex
+				);
+			}
+			mappingActive = false;
+		}
+		if (generatedLine > currentGeneratedLine && currentGeneratedColumn > 0) {
+			if (currentGeneratedLine <= lines.length) {
+				const chunk = lines[currentGeneratedLine - 1].slice(
+					currentGeneratedColumn
+				);
+				onChunk(
+					chunk,
+					currentGeneratedLine,
+					currentGeneratedColumn,
+					-1,
+					-1,
+					-1,
+					-1
+				);
+			}
+			currentGeneratedLine++;
+			currentGeneratedColumn = 0;
+		}
+		while (generatedLine > currentGeneratedLine) {
+			if (currentGeneratedLine <= lines.length) {
+				onChunk(
+					lines[currentGeneratedLine - 1],
+					currentGeneratedLine,
+					0,
+					-1,
+					-1,
+					-1,
+					-1
+				);
+			}
+			currentGeneratedLine++;
+		}
+		if (generatedColumn > currentGeneratedColumn) {
+			if (currentGeneratedLine <= lines.length) {
+				const chunk = lines[currentGeneratedLine - 1].slice(
+					currentGeneratedColumn,
+					generatedColumn
+				);
+				onChunk(
+					chunk,
+					currentGeneratedLine,
+					currentGeneratedColumn,
+					-1,
+					-1,
+					-1,
+					-1
+				);
+			}
+			currentGeneratedColumn = generatedColumn;
+		}
+		if (
+			sourceIndex >= 0 &&
+			(generatedLine < finalLine ||
+				(generatedLine === finalLine && generatedColumn < finalColumn))
+		) {
+			mappingActive = true;
+			activeMappingSourceIndex = sourceIndex;
+			activeMappingOriginalLine = originalLine;
+			activeMappingOriginalColumn = originalColumn;
+			activeMappingNameIndex = nameIndex;
+		}
+	};
+	readMappings(mappings, onMapping);
+	onMapping(finalLine, finalColumn, -1, -1, -1, -1);
+	return {
+		generatedLine: finalLine,
+		generatedColumn: finalColumn
+	};
+};
+
+/**
+ * @param {string} source source
+ * @param {RawSourceMap} sourceMap source map
+ * @param {OnChunk} onChunk on chunk
+ * @param {OnSource} onSource on source
+ * @param {OnName} _onName on name
+ * @returns {GeneratedSourceInfo} generated source info
+ */
+const streamChunksOfSourceMapLinesFull = (
+	source,
+	sourceMap,
+	onChunk,
+	onSource,
+	_onName
+) => {
+	const lines = splitIntoLines(source);
+	if (lines.length === 0) {
+		return {
+			generatedLine: 1,
+			generatedColumn: 0
+		};
+	}
+	const { sources, sourcesContent, mappings } = sourceMap;
+	for (let i = 0; i < sources.length; i++) {
+		onSource(
+			i,
+			getSource(sourceMap, i),
+			(sourcesContent && sourcesContent[i]) || undefined
+		);
+	}
+
+	let currentGeneratedLine = 1;
+
+	/**
+	 * @param {number} generatedLine generated line
+	 * @param {number} _generatedColumn generated column
+	 * @param {number} sourceIndex source index
+	 * @param {number} originalLine original line
+	 * @param {number} originalColumn original column
+	 * @param {number} _nameIndex name index
+	 * @returns {void}
+	 */
+	const onMapping = (
+		generatedLine,
+		_generatedColumn,
+		sourceIndex,
+		originalLine,
+		originalColumn,
+		_nameIndex
+	) => {
+		if (
+			sourceIndex < 0 ||
+			generatedLine < currentGeneratedLine ||
+			generatedLine > lines.length
+		) {
+			return;
+		}
+		while (generatedLine > currentGeneratedLine) {
+			if (currentGeneratedLine <= lines.length) {
+				onChunk(
+					lines[currentGeneratedLine - 1],
+					currentGeneratedLine,
+					0,
+					-1,
+					-1,
+					-1,
+					-1
+				);
+			}
+			currentGeneratedLine++;
+		}
+		if (generatedLine <= lines.length) {
+			onChunk(
+				lines[generatedLine - 1],
+				generatedLine,
+				0,
+				sourceIndex,
+				originalLine,
+				originalColumn,
+				-1
+			);
+			currentGeneratedLine++;
+		}
+	};
+	readMappings(mappings, onMapping);
+	for (; currentGeneratedLine <= lines.length; currentGeneratedLine++) {
+		onChunk(
+			lines[currentGeneratedLine - 1],
+			currentGeneratedLine,
+			0,
+			-1,
+			-1,
+			-1,
+			-1
+		);
+	}
+
+	const lastLine = lines[lines.length - 1];
+	const lastNewLine = lastLine.endsWith("\n");
+
+	const finalLine = lastNewLine ? lines.length + 1 : lines.length;
+	const finalColumn = lastNewLine ? 0 : lastLine.length;
+
+	return {
+		generatedLine: finalLine,
+		generatedColumn: finalColumn
+	};
+};
+
+/**
+ * @param {string} source source
+ * @param {RawSourceMap} sourceMap source map
+ * @param {OnChunk} onChunk on chunk
+ * @param {OnSource} onSource on source
+ * @param {OnName} onName on name
+ * @returns {GeneratedSourceInfo} generated source info
+ */
+const streamChunksOfSourceMapFinal = (
+	source,
+	sourceMap,
+	onChunk,
+	onSource,
+	onName
+) => {
+	const result = getGeneratedSourceInfo(source);
+	const { generatedLine: finalLine, generatedColumn: finalColumn } = result;
+
+	if (finalLine === 1 && finalColumn === 0) return result;
+	const { sources, sourcesContent, names, mappings } = sourceMap;
+	for (let i = 0; i < sources.length; i++) {
+		onSource(
+			i,
+			getSource(sourceMap, i),
+			(sourcesContent && sourcesContent[i]) || undefined
+		);
+	}
+	if (names) {
+		for (let i = 0; i < names.length; i++) {
+			onName(i, names[i]);
+		}
+	}
+
+	let mappingActiveLine = 0;
+
+	/**
+	 * @param {number} generatedLine generated line
+	 * @param {number} generatedColumn generated column
+	 * @param {number} sourceIndex source index
+	 * @param {number} originalLine original line
+	 * @param {number} originalColumn original column
+	 * @param {number} nameIndex name index
+	 * @returns {void}
+	 */
+	const onMapping = (
+		generatedLine,
+		generatedColumn,
+		sourceIndex,
+		originalLine,
+		originalColumn,
+		nameIndex
+	) => {
+		if (
+			generatedLine >= /** @type {number} */ (finalLine) &&
+			(generatedColumn >= /** @type {number} */ (finalColumn) ||
+				generatedLine > /** @type {number} */ (finalLine))
+		) {
+			return;
+		}
+		if (sourceIndex >= 0) {
+			onChunk(
+				undefined,
+				generatedLine,
+				generatedColumn,
+				sourceIndex,
+				originalLine,
+				originalColumn,
+				nameIndex
+			);
+			mappingActiveLine = generatedLine;
+		} else if (mappingActiveLine === generatedLine) {
+			onChunk(undefined, generatedLine, generatedColumn, -1, -1, -1, -1);
+			mappingActiveLine = 0;
+		}
+	};
+	readMappings(mappings, onMapping);
+	return result;
+};
+
+/**
+ * @param {string} source source
+ * @param {RawSourceMap} sourceMap source map
+ * @param {OnChunk} onChunk on chunk
+ * @param {OnSource} onSource on source
+ * @param {OnName} _onName on name
+ * @returns {GeneratedSourceInfo} generated source info
+ */
+const streamChunksOfSourceMapLinesFinal = (
+	source,
+	sourceMap,
+	onChunk,
+	onSource,
+	_onName
+) => {
+	const result = getGeneratedSourceInfo(source);
+	const { generatedLine, generatedColumn } = result;
+	if (generatedLine === 1 && generatedColumn === 0) {
+		return {
+			generatedLine: 1,
+			generatedColumn: 0
+		};
+	}
+
+	const { sources, sourcesContent, mappings } = sourceMap;
+	for (let i = 0; i < sources.length; i++) {
+		onSource(
+			i,
+			getSource(sourceMap, i),
+			(sourcesContent && sourcesContent[i]) || undefined
+		);
+	}
+
+	const finalLine =
+		generatedColumn === 0
+			? /** @type {number} */ (generatedLine) - 1
+			: /** @type {number} */ (generatedLine);
+
+	let currentGeneratedLine = 1;
+
+	/**
+	 * @param {number} generatedLine generated line
+	 * @param {number} _generatedColumn generated column
+	 * @param {number} sourceIndex source index
+	 * @param {number} originalLine original line
+	 * @param {number} originalColumn original column
+	 * @param {number} _nameIndex name index
+	 * @returns {void}
+	 */
+	const onMapping = (
+		generatedLine,
+		_generatedColumn,
+		sourceIndex,
+		originalLine,
+		originalColumn,
+		_nameIndex
+	) => {
+		if (
+			sourceIndex >= 0 &&
+			currentGeneratedLine <= generatedLine &&
+			generatedLine <= finalLine
+		) {
+			onChunk(
+				undefined,
+				generatedLine,
+				0,
+				sourceIndex,
+				originalLine,
+				originalColumn,
+				-1
+			);
+			currentGeneratedLine = generatedLine + 1;
+		}
+	};
+	readMappings(mappings, onMapping);
+	return result;
+};
+
+/**
+ * @param {string} source source
+ * @param {RawSourceMap} sourceMap source map
+ * @param {OnChunk} onChunk on chunk
+ * @param {OnSource} onSource on source
+ * @param {OnName} onName on name
+ * @param {boolean} finalSource final source
+ * @param {boolean} columns columns
+ * @returns {GeneratedSourceInfo} generated source info
+ */
+module.exports = (
+	source,
+	sourceMap,
+	onChunk,
+	onSource,
+	onName,
+	finalSource,
+	columns
+) => {
+	if (columns) {
+		return finalSource
+			? streamChunksOfSourceMapFinal(
+					source,
+					sourceMap,
+					onChunk,
+					onSource,
+					onName
+			  )
+			: streamChunksOfSourceMapFull(
+					source,
+					sourceMap,
+					onChunk,
+					onSource,
+					onName
+			  );
+	} else {
+		return finalSource
+			? streamChunksOfSourceMapLinesFinal(
+					source,
+					sourceMap,
+					onChunk,
+					onSource,
+					onName
+			  )
+			: streamChunksOfSourceMapLinesFull(
+					source,
+					sourceMap,
+					onChunk,
+					onSource,
+					onName
+			  );
+	}
+};