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build/node_modules/source-list-map/lib/SourceNode.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+var base64VLQ = require("./base64-vlq");
+var getNumberOfLines = require("./helpers").getNumberOfLines;
+
+function SourceNode(generatedCode, source, originalSource, startingLine) {
+	this.generatedCode = generatedCode;
+	this.originalSource = originalSource;
+	this.source = source;
+	this.startingLine = startingLine || 1;
+}
+module.exports = SourceNode;
+
+SourceNode.prototype.clone = function() {
+	return new SourceNode(this.generatedCode, this.source, this.originalSource, this.startingLine);
+}
+
+var LINE_MAPPING = "AACA;";
+var LAST_LINE_MAPPING = "AACA";
+
+SourceNode.prototype.getGeneratedCode = function() {
+	return this.generatedCode;
+};
+
+SourceNode.prototype.getMappings = function(mappingsContext) {
+	var lines = getNumberOfLines(this.generatedCode);
+	var sourceIdx = mappingsContext.ensureSource(this.source, this.originalSource);
+	var mappings = "A"; // generated column 0
+	mappings += base64VLQ.encode(sourceIdx - mappingsContext.currentSource); // source index
+	mappings += base64VLQ.encode(this.startingLine - mappingsContext.currentOriginalLine); // original line index
+	mappings += "A"; // original column 0
+	if(lines !== 0)
+		mappings += ";"
+	mappingsContext.currentSource = sourceIdx;
+	mappingsContext.currentOriginalLine = (lines || 1) + this.startingLine - 1;
+	mappings += Array(lines).join(LINE_MAPPING);
+	if(lines !== 0 && this.generatedCode[this.generatedCode.length - 1] !== "\n") {
+		mappings += LAST_LINE_MAPPING;
+		mappingsContext.currentOriginalLine++;
+	}
+	return mappings;
+};
+
+SourceNode.prototype.mapGeneratedCode = function(fn) {
+	this.generatedCode = fn(this.generatedCode);
+};