[6a3a178] | 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | Author Tobias Koppers @sokra
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| 4 | */
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| 5 | "use strict";
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| 6 |
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| 7 | const base64VLQ = require("./base64-vlq");
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| 8 | const getNumberOfLines = require("./helpers").getNumberOfLines;
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| 9 | const getUnfinishedLine = require("./helpers").getUnfinishedLine;
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| 10 |
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| 11 | const LINE_MAPPING = ";AAAA";
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| 12 |
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| 13 | class SingleLineNode {
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| 14 |
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| 15 | constructor(generatedCode, source, originalSource, line) {
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| 16 | this.generatedCode = generatedCode;
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| 17 | this.originalSource = originalSource;
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| 18 | this.source = source;
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| 19 | this.line = line || 1;
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| 20 | this._numberOfLines = getNumberOfLines(this.generatedCode);
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| 21 | this._endsWithNewLine = generatedCode[generatedCode.length - 1] === "\n";
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| 22 | }
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| 23 |
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| 24 | clone() {
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| 25 | return new SingleLineNode(this.generatedCode, this.source, this.originalSource, this.line);
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| 26 | }
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| 27 |
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| 28 | getGeneratedCode() {
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| 29 | return this.generatedCode;
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| 30 | }
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| 31 |
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| 32 | getMappings(mappingsContext) {
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| 33 | if(!this.generatedCode)
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| 34 | return "";
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| 35 | const lines = this._numberOfLines;
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| 36 | const sourceIdx = mappingsContext.ensureSource(this.source, this.originalSource);
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| 37 | let mappings = "A"; // generated column 0
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| 38 | if(mappingsContext.unfinishedGeneratedLine)
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| 39 | mappings = "," + base64VLQ.encode(mappingsContext.unfinishedGeneratedLine);
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| 40 | mappings += base64VLQ.encode(sourceIdx - mappingsContext.currentSource); // source index
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| 41 | mappings += base64VLQ.encode(this.line - mappingsContext.currentOriginalLine); // original line index
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| 42 | mappings += "A"; // original column 0
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| 43 | mappingsContext.currentSource = sourceIdx;
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| 44 | mappingsContext.currentOriginalLine = this.line;
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| 45 | const unfinishedGeneratedLine = mappingsContext.unfinishedGeneratedLine = getUnfinishedLine(this.generatedCode)
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| 46 | mappings += Array(lines).join(LINE_MAPPING);
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| 47 | if(unfinishedGeneratedLine === 0) {
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| 48 | mappings += ";";
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| 49 | } else {
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| 50 | if(lines !== 0)
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| 51 | mappings += LINE_MAPPING;
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| 52 | }
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| 53 | return mappings;
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| 54 | }
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| 55 |
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| 56 | getNormalizedNodes() {
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| 57 | return [this];
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| 58 | }
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| 59 |
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| 60 | mapGeneratedCode(fn) {
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| 61 | const generatedCode = fn(this.generatedCode);
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| 62 | return new SingleLineNode(generatedCode, this.source, this.originalSource, this.line);
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| 63 | }
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| 64 |
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| 65 | merge(otherNode) {
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| 66 | if(otherNode instanceof SingleLineNode) {
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| 67 | return this.mergeSingleLineNode(otherNode);
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| 68 | }
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| 69 | return false;
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| 70 | }
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| 71 |
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| 72 | mergeSingleLineNode(otherNode) {
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| 73 | if(this.source === otherNode.source &&
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| 74 | this.originalSource === otherNode.originalSource) {
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| 75 | if(this.line === otherNode.line) {
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| 76 | this.generatedCode += otherNode.generatedCode;
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| 77 | this._numberOfLines += otherNode._numberOfLines;
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| 78 | this._endsWithNewLine = otherNode._endsWithNewLine;
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| 79 | return this;
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| 80 | } else if(this.line + 1 === otherNode.line &&
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| 81 | this._endsWithNewLine &&
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| 82 | this._numberOfLines === 1 &&
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| 83 | otherNode._numberOfLines <= 1) {
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| 84 | return new SourceNode(this.generatedCode + otherNode.generatedCode, this.source, this.originalSource, this.line);
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| 85 | }
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| 86 | }
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| 87 | return false;
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| 88 | }
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| 89 | }
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| 90 |
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| 91 | module.exports = SingleLineNode;
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| 92 |
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| 93 | const SourceNode = require("./SourceNode"); // circular dependency
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