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Diffstat (limited to 'node_modules/webpack-sources/lib/applySourceMap.js')
| -rw-r--r-- | node_modules/webpack-sources/lib/applySourceMap.js | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/node_modules/webpack-sources/lib/applySourceMap.js b/node_modules/webpack-sources/lib/applySourceMap.js deleted file mode 100644 index 9696f4b..0000000 --- a/node_modules/webpack-sources/lib/applySourceMap.js +++ /dev/null @@ -1,185 +0,0 @@ -/* - MIT License http://www.opensource.org/licenses/mit-license.php - Author Tobias Koppers @sokra -*/ - -"use strict"; - -var SourceNode = require("source-map").SourceNode; -var SourceMapConsumer = require("source-map").SourceMapConsumer; - -var applySourceMap = function( - sourceNode, - sourceMapConsumer, - sourceFile, - removeGeneratedCodeForSourceFile -) { - // The following notations are used to name stuff: - // Left <------------> Middle <-------------------> Right - // Input arguments: - // sourceNode - Code mapping from Left to Middle - // sourceFile - Name of a Middle file - // sourceMapConsumer - Code mapping from Middle to Right - // Variables: - // l2m m2r - // Left <-----------------------------------------> Right - // Variables: - // l2r - - var l2rResult = new SourceNode(); - var l2rOutput = []; - - var middleSourceContents = {}; - - var m2rMappingsByLine = {}; - - var rightSourceContentsSet = {}; - var rightSourceContentsLines = {}; - - // Store all mappings by generated line - sourceMapConsumer.eachMapping( - function(mapping) { - (m2rMappingsByLine[mapping.generatedLine] = - m2rMappingsByLine[mapping.generatedLine] || []).push(mapping); - }, - null, - SourceMapConsumer.GENERATED_ORDER - ); - - // Store all source contents - sourceNode.walkSourceContents(function(source, content) { - middleSourceContents["$" + source] = content; - }); - - var middleSource = middleSourceContents["$" + sourceFile]; - var middleSourceLines = middleSource ? middleSource.split("\n") : undefined; - - // Walk all left to middle mappings - sourceNode.walk(function(chunk, middleMapping) { - var source; - - // Find a mapping from middle to right - if( - middleMapping.source === sourceFile && - middleMapping.line && - m2rMappingsByLine[middleMapping.line] - ) { - var m2rBestFit; - var m2rMappings = m2rMappingsByLine[middleMapping.line]; - // Note: if this becomes a performance problem, use binary search - for(var i = 0; i < m2rMappings.length; i++) { - if(m2rMappings[i].generatedColumn <= middleMapping.column) { - m2rBestFit = m2rMappings[i]; - } - } - if(m2rBestFit) { - var allowMiddleName = false; - var middleLine; - var rightSourceContent; - var rightSourceContentLines; - var rightSource = m2rBestFit.source; - // Check if we have middle and right source for this mapping - // Then we could have an "identify" mapping - if( - middleSourceLines && - rightSource && - (middleLine = middleSourceLines[m2rBestFit.generatedLine - 1]) && - ((rightSourceContentLines = rightSourceContentsLines[rightSource]) || - (rightSourceContent = sourceMapConsumer.sourceContentFor( - rightSource, - true - ))) - ) { - if(!rightSourceContentLines) { - rightSourceContentLines = rightSourceContentsLines[ - rightSource - ] = rightSourceContent.split("\n"); - } - var rightLine = rightSourceContentLines[m2rBestFit.originalLine - 1]; - if(rightLine) { - var offset = middleMapping.column - m2rBestFit.generatedColumn; - if(offset > 0) { - var middlePart = middleLine.slice( - m2rBestFit.generatedColumn, - middleMapping.column - ); - var rightPart = rightLine.slice( - m2rBestFit.originalColumn, - m2rBestFit.originalColumn + offset - ); - if(middlePart === rightPart) { - // When original and generated code is equal we assume we have an "identity" mapping - // In this case we can offset the original position - m2rBestFit = Object.assign({}, m2rBestFit, { - originalColumn: m2rBestFit.originalColumn + offset, - generatedColumn: middleMapping.column - }); - } - } - if(!m2rBestFit.name && middleMapping.name) { - allowMiddleName = - rightLine.slice( - m2rBestFit.originalColumn, - m2rBestFit.originalColumn + middleMapping.name.length - ) === middleMapping.name; - } - } - } - - // Construct a left to right node from the found middle to right mapping - source = m2rBestFit.source; - l2rOutput.push( - new SourceNode( - m2rBestFit.originalLine, - m2rBestFit.originalColumn, - source, - chunk, - allowMiddleName ? middleMapping.name : m2rBestFit.name - ) - ); - - // Set the source contents once - if(!("$" + source in rightSourceContentsSet)) { - rightSourceContentsSet["$" + source] = true; - var sourceContent = sourceMapConsumer.sourceContentFor(source, true); - if(sourceContent) { - l2rResult.setSourceContent(source, sourceContent); - } - } - return; - } - } - - if((removeGeneratedCodeForSourceFile && middleMapping.source === sourceFile) || !middleMapping.source) { - // Construct a left to middle node with only generated code - // Because user do not want mappings to middle sources - // Or this chunk has no mapping - l2rOutput.push(chunk); - return; - } - - // Construct a left to middle node - source = middleMapping.source; - l2rOutput.push( - new SourceNode( - middleMapping.line, - middleMapping.column, - source, - chunk, - middleMapping.name - ) - ); - if("$" + source in middleSourceContents) { - if(!("$" + source in rightSourceContentsSet)) { - l2rResult.setSourceContent(source, middleSourceContents["$" + source]); - delete middleSourceContents["$" + source]; - } - } - }); - - // Put output into the resulting SourceNode - l2rResult.add(l2rOutput); - return l2rResult; -}; - -module.exports = applySourceMap; |