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Diffstat (limited to 'node_modules/webpack/lib/JavascriptGenerator.js')
| -rw-r--r-- | node_modules/webpack/lib/JavascriptGenerator.js | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/node_modules/webpack/lib/JavascriptGenerator.js b/node_modules/webpack/lib/JavascriptGenerator.js deleted file mode 100644 index 882f7d4..0000000 --- a/node_modules/webpack/lib/JavascriptGenerator.js +++ /dev/null @@ -1,229 +0,0 @@ -/* - MIT License http://www.opensource.org/licenses/mit-license.php - Author Tobias Koppers @sokra -*/ -"use strict"; - -const { RawSource, ReplaceSource } = require("webpack-sources"); - -// TODO: clean up this file -// replace with newer constructs - -// TODO: remove DependencyVariables and replace them with something better - -class JavascriptGenerator { - generate(module, dependencyTemplates, runtimeTemplate) { - const originalSource = module.originalSource(); - if (!originalSource) { - return new RawSource("throw new Error('No source available');"); - } - - const source = new ReplaceSource(originalSource); - - this.sourceBlock( - module, - module, - [], - dependencyTemplates, - source, - runtimeTemplate - ); - - return source; - } - - sourceBlock( - module, - block, - availableVars, - dependencyTemplates, - source, - runtimeTemplate - ) { - for (const dependency of block.dependencies) { - this.sourceDependency( - dependency, - dependencyTemplates, - source, - runtimeTemplate - ); - } - - /** - * Get the variables of all blocks that we need to inject. - * These will contain the variable name and its expression. - * The name will be added as a parameter in a IIFE the expression as its value. - */ - const vars = block.variables.reduce((result, value) => { - const variable = this.sourceVariables( - value, - availableVars, - dependencyTemplates, - runtimeTemplate - ); - - if (variable) { - result.push(variable); - } - - return result; - }, []); - - /** - * if we actually have variables - * this is important as how #splitVariablesInUniqueNamedChunks works - * it will always return an array in an array which would lead to a IIFE wrapper around - * a module if we do this with an empty vars array. - */ - if (vars.length > 0) { - /** - * Split all variables up into chunks of unique names. - * e.g. imagine you have the following variable names that need to be injected: - * [foo, bar, baz, foo, some, more] - * we can not inject "foo" twice, therefore we just make two IIFEs like so: - * (function(foo, bar, baz){ - * (function(foo, some, more){ - * … - * }(…)); - * }(…)); - * - * "splitVariablesInUniqueNamedChunks" splits the variables shown above up to this: - * [[foo, bar, baz], [foo, some, more]] - */ - const injectionVariableChunks = this.splitVariablesInUniqueNamedChunks( - vars - ); - - // create all the beginnings of IIFEs - const functionWrapperStarts = injectionVariableChunks.map( - variableChunk => { - return this.variableInjectionFunctionWrapperStartCode( - variableChunk.map(variable => variable.name) - ); - } - ); - - // and all the ends - const functionWrapperEnds = injectionVariableChunks.map(variableChunk => { - return this.variableInjectionFunctionWrapperEndCode( - module, - variableChunk.map(variable => variable.expression), - block - ); - }); - - // join them to one big string - const varStartCode = functionWrapperStarts.join(""); - - // reverse the ends first before joining them, as the last added must be the inner most - const varEndCode = functionWrapperEnds.reverse().join(""); - - // if we have anything, add it to the source - if (varStartCode && varEndCode) { - const start = block.range ? block.range[0] : -10; - const end = block.range - ? block.range[1] - : module.originalSource().size() + 1; - source.insert(start + 0.5, varStartCode); - source.insert(end + 0.5, "\n/* WEBPACK VAR INJECTION */" + varEndCode); - } - } - - for (const childBlock of block.blocks) { - this.sourceBlock( - module, - childBlock, - availableVars.concat(vars), - dependencyTemplates, - source, - runtimeTemplate - ); - } - } - - sourceDependency(dependency, dependencyTemplates, source, runtimeTemplate) { - const template = dependencyTemplates.get(dependency.constructor); - if (!template) { - throw new Error( - "No template for dependency: " + dependency.constructor.name - ); - } - template.apply(dependency, source, runtimeTemplate, dependencyTemplates); - } - - sourceVariables( - variable, - availableVars, - dependencyTemplates, - runtimeTemplate - ) { - const name = variable.name; - const expr = variable.expressionSource( - dependencyTemplates, - runtimeTemplate - ); - - if ( - availableVars.some( - v => v.name === name && v.expression.source() === expr.source() - ) - ) { - return; - } - return { - name: name, - expression: expr - }; - } - - /* - * creates the start part of a IIFE around the module to inject a variable name - * (function(…){ <- this part - * }.call(…)) - */ - variableInjectionFunctionWrapperStartCode(varNames) { - const args = varNames.join(", "); - return `/* WEBPACK VAR INJECTION */(function(${args}) {`; - } - - contextArgument(module, block) { - if (this === block) { - return module.exportsArgument; - } - return "this"; - } - - /* - * creates the end part of a IIFE around the module to inject a variable name - * (function(…){ - * }.call(…)) <- this part - */ - variableInjectionFunctionWrapperEndCode(module, varExpressions, block) { - const firstParam = this.contextArgument(module, block); - const furtherParams = varExpressions.map(e => e.source()).join(", "); - return `}.call(${firstParam}, ${furtherParams}))`; - } - - splitVariablesInUniqueNamedChunks(vars) { - const startState = [[]]; - return vars.reduce((chunks, variable) => { - const current = chunks[chunks.length - 1]; - // check if variable with same name exists already - // if so create a new chunk of variables. - const variableNameAlreadyExists = current.some( - v => v.name === variable.name - ); - - if (variableNameAlreadyExists) { - // start new chunk with current variable - chunks.push([variable]); - } else { - // else add it to current chunk - current.push(variable); - } - return chunks; - }, startState); - } -} - -module.exports = JavascriptGenerator; |