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Diffstat (limited to 'node_modules/tapable/lib/HookCodeFactory.js')
-rw-r--r-- | node_modules/tapable/lib/HookCodeFactory.js | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/node_modules/tapable/lib/HookCodeFactory.js b/node_modules/tapable/lib/HookCodeFactory.js deleted file mode 100644 index 36ff2bd..0000000 --- a/node_modules/tapable/lib/HookCodeFactory.js +++ /dev/null @@ -1,407 +0,0 @@ -/* - MIT License http://www.opensource.org/licenses/mit-license.php - Author Tobias Koppers @sokra -*/ -"use strict"; - -class HookCodeFactory { - constructor(config) { - this.config = config; - this.options = undefined; - this._args = undefined; - } - - create(options) { - this.init(options); - let fn; - switch (this.options.type) { - case "sync": - fn = new Function( - this.args(), - '"use strict";\n' + - this.header() + - this.content({ - onError: err => `throw ${err};\n`, - onResult: result => `return ${result};\n`, - resultReturns: true, - onDone: () => "", - rethrowIfPossible: true - }) - ); - break; - case "async": - fn = new Function( - this.args({ - after: "_callback" - }), - '"use strict";\n' + - this.header() + - this.content({ - onError: err => `_callback(${err});\n`, - onResult: result => `_callback(null, ${result});\n`, - onDone: () => "_callback();\n" - }) - ); - break; - case "promise": - let errorHelperUsed = false; - const content = this.content({ - onError: err => { - errorHelperUsed = true; - return `_error(${err});\n`; - }, - onResult: result => `_resolve(${result});\n`, - onDone: () => "_resolve();\n" - }); - let code = ""; - code += '"use strict";\n'; - code += "return new Promise((_resolve, _reject) => {\n"; - if (errorHelperUsed) { - code += "var _sync = true;\n"; - code += "function _error(_err) {\n"; - code += "if(_sync)\n"; - code += "_resolve(Promise.resolve().then(() => { throw _err; }));\n"; - code += "else\n"; - code += "_reject(_err);\n"; - code += "};\n"; - } - code += this.header(); - code += content; - if (errorHelperUsed) { - code += "_sync = false;\n"; - } - code += "});\n"; - fn = new Function(this.args(), code); - break; - } - this.deinit(); - return fn; - } - - setup(instance, options) { - instance._x = options.taps.map(t => t.fn); - } - - /** - * @param {{ type: "sync" | "promise" | "async", taps: Array<Tap>, interceptors: Array<Interceptor> }} options - */ - init(options) { - this.options = options; - this._args = options.args.slice(); - } - - deinit() { - this.options = undefined; - this._args = undefined; - } - - header() { - let code = ""; - if (this.needContext()) { - code += "var _context = {};\n"; - } else { - code += "var _context;\n"; - } - code += "var _x = this._x;\n"; - if (this.options.interceptors.length > 0) { - code += "var _taps = this.taps;\n"; - code += "var _interceptors = this.interceptors;\n"; - } - for (let i = 0; i < this.options.interceptors.length; i++) { - const interceptor = this.options.interceptors[i]; - if (interceptor.call) { - code += `${this.getInterceptor(i)}.call(${this.args({ - before: interceptor.context ? "_context" : undefined - })});\n`; - } - } - return code; - } - - needContext() { - for (const tap of this.options.taps) if (tap.context) return true; - return false; - } - - callTap(tapIndex, { onError, onResult, onDone, rethrowIfPossible }) { - let code = ""; - let hasTapCached = false; - for (let i = 0; i < this.options.interceptors.length; i++) { - const interceptor = this.options.interceptors[i]; - if (interceptor.tap) { - if (!hasTapCached) { - code += `var _tap${tapIndex} = ${this.getTap(tapIndex)};\n`; - hasTapCached = true; - } - code += `${this.getInterceptor(i)}.tap(${ - interceptor.context ? "_context, " : "" - }_tap${tapIndex});\n`; - } - } - code += `var _fn${tapIndex} = ${this.getTapFn(tapIndex)};\n`; - const tap = this.options.taps[tapIndex]; - switch (tap.type) { - case "sync": - if (!rethrowIfPossible) { - code += `var _hasError${tapIndex} = false;\n`; - code += "try {\n"; - } - if (onResult) { - code += `var _result${tapIndex} = _fn${tapIndex}(${this.args({ - before: tap.context ? "_context" : undefined - })});\n`; - } else { - code += `_fn${tapIndex}(${this.args({ - before: tap.context ? "_context" : undefined - })});\n`; - } - if (!rethrowIfPossible) { - code += "} catch(_err) {\n"; - code += `_hasError${tapIndex} = true;\n`; - code += onError("_err"); - code += "}\n"; - code += `if(!_hasError${tapIndex}) {\n`; - } - if (onResult) { - code += onResult(`_result${tapIndex}`); - } - if (onDone) { - code += onDone(); - } - if (!rethrowIfPossible) { - code += "}\n"; - } - break; - case "async": - let cbCode = ""; - if (onResult) cbCode += `(_err${tapIndex}, _result${tapIndex}) => {\n`; - else cbCode += `_err${tapIndex} => {\n`; - cbCode += `if(_err${tapIndex}) {\n`; - cbCode += onError(`_err${tapIndex}`); - cbCode += "} else {\n"; - if (onResult) { - cbCode += onResult(`_result${tapIndex}`); - } - if (onDone) { - cbCode += onDone(); - } - cbCode += "}\n"; - cbCode += "}"; - code += `_fn${tapIndex}(${this.args({ - before: tap.context ? "_context" : undefined, - after: cbCode - })});\n`; - break; - case "promise": - code += `var _hasResult${tapIndex} = false;\n`; - code += `var _promise${tapIndex} = _fn${tapIndex}(${this.args({ - before: tap.context ? "_context" : undefined - })});\n`; - code += `if (!_promise${tapIndex} || !_promise${tapIndex}.then)\n`; - code += ` throw new Error('Tap function (tapPromise) did not return promise (returned ' + _promise${tapIndex} + ')');\n`; - code += `_promise${tapIndex}.then(_result${tapIndex} => {\n`; - code += `_hasResult${tapIndex} = true;\n`; - if (onResult) { - code += onResult(`_result${tapIndex}`); - } - if (onDone) { - code += onDone(); - } - code += `}, _err${tapIndex} => {\n`; - code += `if(_hasResult${tapIndex}) throw _err${tapIndex};\n`; - code += onError(`_err${tapIndex}`); - code += "});\n"; - break; - } - return code; - } - - callTapsSeries({ - onError, - onResult, - resultReturns, - onDone, - doneReturns, - rethrowIfPossible - }) { - if (this.options.taps.length === 0) return onDone(); - const firstAsync = this.options.taps.findIndex(t => t.type !== "sync"); - const somethingReturns = resultReturns || doneReturns || false; - let code = ""; - let current = onDone; - for (let j = this.options.taps.length - 1; j >= 0; j--) { - const i = j; - const unroll = current !== onDone && this.options.taps[i].type !== "sync"; - if (unroll) { - code += `function _next${i}() {\n`; - code += current(); - code += `}\n`; - current = () => `${somethingReturns ? "return " : ""}_next${i}();\n`; - } - const done = current; - const doneBreak = skipDone => { - if (skipDone) return ""; - return onDone(); - }; - const content = this.callTap(i, { - onError: error => onError(i, error, done, doneBreak), - onResult: - onResult && - (result => { - return onResult(i, result, done, doneBreak); - }), - onDone: !onResult && done, - rethrowIfPossible: - rethrowIfPossible && (firstAsync < 0 || i < firstAsync) - }); - current = () => content; - } - code += current(); - return code; - } - - callTapsLooping({ onError, onDone, rethrowIfPossible }) { - if (this.options.taps.length === 0) return onDone(); - const syncOnly = this.options.taps.every(t => t.type === "sync"); - let code = ""; - if (!syncOnly) { - code += "var _looper = () => {\n"; - code += "var _loopAsync = false;\n"; - } - code += "var _loop;\n"; - code += "do {\n"; - code += "_loop = false;\n"; - for (let i = 0; i < this.options.interceptors.length; i++) { - const interceptor = this.options.interceptors[i]; - if (interceptor.loop) { - code += `${this.getInterceptor(i)}.loop(${this.args({ - before: interceptor.context ? "_context" : undefined - })});\n`; - } - } - code += this.callTapsSeries({ - onError, - onResult: (i, result, next, doneBreak) => { - let code = ""; - code += `if(${result} !== undefined) {\n`; - code += "_loop = true;\n"; - if (!syncOnly) code += "if(_loopAsync) _looper();\n"; - code += doneBreak(true); - code += `} else {\n`; - code += next(); - code += `}\n`; - return code; - }, - onDone: - onDone && - (() => { - let code = ""; - code += "if(!_loop) {\n"; - code += onDone(); - code += "}\n"; - return code; - }), - rethrowIfPossible: rethrowIfPossible && syncOnly - }); - code += "} while(_loop);\n"; - if (!syncOnly) { - code += "_loopAsync = true;\n"; - code += "};\n"; - code += "_looper();\n"; - } - return code; - } - - callTapsParallel({ - onError, - onResult, - onDone, - rethrowIfPossible, - onTap = (i, run) => run() - }) { - if (this.options.taps.length <= 1) { - return this.callTapsSeries({ - onError, - onResult, - onDone, - rethrowIfPossible - }); - } - let code = ""; - code += "do {\n"; - code += `var _counter = ${this.options.taps.length};\n`; - if (onDone) { - code += "var _done = () => {\n"; - code += onDone(); - code += "};\n"; - } - for (let i = 0; i < this.options.taps.length; i++) { - const done = () => { - if (onDone) return "if(--_counter === 0) _done();\n"; - else return "--_counter;"; - }; - const doneBreak = skipDone => { - if (skipDone || !onDone) return "_counter = 0;\n"; - else return "_counter = 0;\n_done();\n"; - }; - code += "if(_counter <= 0) break;\n"; - code += onTap( - i, - () => - this.callTap(i, { - onError: error => { - let code = ""; - code += "if(_counter > 0) {\n"; - code += onError(i, error, done, doneBreak); - code += "}\n"; - return code; - }, - onResult: - onResult && - (result => { - let code = ""; - code += "if(_counter > 0) {\n"; - code += onResult(i, result, done, doneBreak); - code += "}\n"; - return code; - }), - onDone: - !onResult && - (() => { - return done(); - }), - rethrowIfPossible - }), - done, - doneBreak - ); - } - code += "} while(false);\n"; - return code; - } - - args({ before, after } = {}) { - let allArgs = this._args; - if (before) allArgs = [before].concat(allArgs); - if (after) allArgs = allArgs.concat(after); - if (allArgs.length === 0) { - return ""; - } else { - return allArgs.join(", "); - } - } - - getTapFn(idx) { - return `_x[${idx}]`; - } - - getTap(idx) { - return `_taps[${idx}]`; - } - - getInterceptor(idx) { - return `_interceptors[${idx}]`; - } -} - -module.exports = HookCodeFactory; |