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1 files changed, 129 insertions, 0 deletions

diff --git a/node_modules/source-list-map/lib/SourceNode.js b/node_modules/source-list-map/lib/SourceNode.js
new file mode 100644
index 00000000..7dd235eb
--- /dev/null
+++ b/node_modules/source-list-map/lib/SourceNode.js
@@ -0,0 +1,129 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const base64VLQ = require("./base64-vlq");
+const getNumberOfLines = require("./helpers").getNumberOfLines;
+const getUnfinishedLine = require("./helpers").getUnfinishedLine;
+
+const LINE_MAPPING = ";AACA";
+
+class SourceNode {
+
+	constructor(generatedCode, source, originalSource, startingLine) {
+		this.generatedCode = generatedCode;
+		this.originalSource = originalSource;
+		this.source = source;
+		this.startingLine = startingLine || 1;
+		this._numberOfLines = getNumberOfLines(this.generatedCode);
+		this._endsWithNewLine = generatedCode[generatedCode.length - 1] === "\n";
+	}
+
+	clone() {
+		return new SourceNode(this.generatedCode, this.source, this.originalSource, this.startingLine);
+	}
+
+	getGeneratedCode() {
+		return this.generatedCode;
+	}
+
+	addGeneratedCode(code) {
+		this.generatedCode += code;
+		this._numberOfLines += getNumberOfLines(code);
+		this._endsWithNewLine = code[code.length - 1] === "\n";
+	}
+
+	getMappings(mappingsContext) {
+		if(!this.generatedCode)
+			return "";
+		const lines = this._numberOfLines;
+		const sourceIdx = mappingsContext.ensureSource(this.source, this.originalSource);
+		let mappings = "A"; // generated column 0
+		if(mappingsContext.unfinishedGeneratedLine)
+			mappings = "," + base64VLQ.encode(mappingsContext.unfinishedGeneratedLine);
+		mappings += base64VLQ.encode(sourceIdx - mappingsContext.currentSource); // source index
+		mappings += base64VLQ.encode(this.startingLine - mappingsContext.currentOriginalLine); // original line index
+		mappings += "A"; // original column 0
+		mappingsContext.currentSource = sourceIdx;
+		mappingsContext.currentOriginalLine = this.startingLine + lines - 1;
+		const unfinishedGeneratedLine = mappingsContext.unfinishedGeneratedLine = getUnfinishedLine(this.generatedCode)
+		mappings += Array(lines).join(LINE_MAPPING);
+		if(unfinishedGeneratedLine === 0) {
+			mappings += ";";
+		} else {
+			if(lines !== 0) {
+				mappings += LINE_MAPPING;
+			}
+			mappingsContext.currentOriginalLine++;
+		}
+		return mappings;
+	}
+
+	mapGeneratedCode(fn) {
+		throw new Error("Cannot map generated code on a SourceMap. Normalize to SingleLineNode first.");
+	}
+
+	getNormalizedNodes() {
+		var results = [];
+		var currentLine = this.startingLine;
+		var generatedCode = this.generatedCode;
+		var index = 0;
+		var indexEnd = generatedCode.length;
+		while(index < indexEnd) {
+			// get one generated line
+			var nextLine = generatedCode.indexOf("\n", index) + 1;
+			if(nextLine === 0) nextLine = indexEnd;
+			var lineGenerated = generatedCode.substr(index, nextLine - index);
+
+			results.push(new SingleLineNode(lineGenerated, this.source, this.originalSource, currentLine));
+
+			// move cursors
+			index = nextLine;
+			currentLine++;
+		}
+		return results;
+	}
+
+	merge(otherNode) {
+		if(otherNode instanceof SourceNode) {
+			return this.mergeSourceNode(otherNode);
+		} else if(otherNode instanceof SingleLineNode) {
+			return this.mergeSingleLineNode(otherNode);
+		}
+		return false;
+	}
+
+	mergeSourceNode(otherNode) {
+		if(this.source === otherNode.source &&
+			this._endsWithNewLine &&
+			this.startingLine + this._numberOfLines === otherNode.startingLine) {
+			this.generatedCode += otherNode.generatedCode;
+			this._numberOfLines += otherNode._numberOfLines;
+			this._endsWithNewLine = otherNode._endsWithNewLine;
+			return this;
+		}
+		return false;
+	}
+
+	mergeSingleLineNode(otherNode) {
+		if(this.source === otherNode.source &&
+			this._endsWithNewLine &&
+			this.startingLine + this._numberOfLines === otherNode.line &&
+			otherNode._numberOfLines <= 1) {
+			this.addSingleLineNode(otherNode);
+			return this;
+		}
+		return false;
+	}
+
+	addSingleLineNode(otherNode) {
+		this.generatedCode += otherNode.generatedCode;
+		this._numberOfLines += otherNode._numberOfLines
+		this._endsWithNewLine = otherNode._endsWithNewLine;
+	}
+}
+
+module.exports = SourceNode;
+const SingleLineNode = require("./SingleLineNode"); // circular dependency