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