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How to use skipWhitespace method in Playwright Internal

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SubframeSelectorEvaluator.js

Source:SubframeSelectorEvaluator.js

1// ----------------------------------------------------------------------------2// PixInsight JavaScript Runtime API - PJSR Version 1.03// ----------------------------------------------------------------------------4// SubframeSelectorEvaluator.js - Released 2018-11-05T16:53:08Z5// ----------------------------------------------------------------------------6//7// This file is part of SubframeSelector Script version 1.128//9// Copyright (C) 2012-2018 Mike Schuster. All Rights Reserved.10// Copyright (C) 2003-2018 Pleiades Astrophoto S.L. All Rights Reserved.11//12// Redistribution and use in both source and binary forms, with or without13// modification, is permitted provided that the following conditions are met:14//15// 1. All redistributions of source code must retain the above copyright16//    notice, this list of conditions and the following disclaimer.17//18// 2. All redistributions in binary form must reproduce the above copyright19//    notice, this list of conditions and the following disclaimer in the20//    documentation and/or other materials provided with the distribution.21//22// 3. Neither the names "PixInsight" and "Pleiades Astrophoto", nor the names23//    of their contributors, may be used to endorse or promote products derived24//    from this software without specific prior written permission. For written25//    permission, please contact info@pixinsight.com.26//27// 4. All products derived from this software, in any form whatsoever, must28//    reproduce the following acknowledgment in the end-user documentation29//    and/or other materials provided with the product:30//31//    "This product is based on software from the PixInsight project, developed32//    by Pleiades Astrophoto and its contributors (http://pixinsight.com/)."33//34//    Alternatively, if that is where third-party acknowledgments normally35//    appear, this acknowledgment must be reproduced in the product itself.36//37// THIS SOFTWARE IS PROVIDED BY PLEIADES ASTROPHOTO AND ITS CONTRIBUTORS38// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED39// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR40// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL PLEIADES ASTROPHOTO OR ITS41// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,42// EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, BUSINESS43// INTERRUPTION; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; AND LOSS OF USE,44// DATA OR PROFITS) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN45// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)46// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE47// POSSIBILITY OF SUCH DAMAGE.48// ----------------------------------------------------------------------------49function numberCompare(a, b) {50   return a < b ? -1 : a > b ? 1 : 0;51}52function medianMeanDeviationOfArray(values) {53   if (values.length == 0) {54      return [0.0, 0.0];55   }56   values.sort(numberCompare);57   var i = Math.floor(0.5 * values.length);58   var median = (2 * i == values.length) ?59      0.5 * (values[i - 1] + values[i]) :60      values[i];61   var deviations = new Array(values.length);62   for (var i = 0; i != values.length; ++i) {63      deviations[i] = Math.abs(median - values[i]);64   }65   var dispersion = 0.0;66   for (var i = 0; i != deviations.length; ++i) {67      dispersion += deviations[i];68   }69   dispersion = dispersion / deviations.length;70   return [median, dispersion];71}72function medianMedianDeviationOfArray(values) {73   if (values.length == 0) {74      return [0.0, 0.0];75   }76   values.sort(numberCompare);77   var i = Math.floor(0.5 * values.length);78   var median = (2 * i == values.length) ?79      0.5 * (values[i - 1] + values[i]) :80      values[i];81   var deviations = new Array(values.length);82   for (var i = 0; i != values.length; ++i) {83      deviations[i] = Math.abs(median - values[i]);84   }85   deviations.sort(numberCompare);86   var i = Math.floor(0.5 * deviations.length);87   var dispersion = (2 * i == deviations.length) ?88      0.5 * (deviations[i - 1] + deviations[i]) :89      deviations[i];90   return [median, dispersion];91}92function sigmaNormalize(value, median, dispersion) {93   return (value - median) / (dispersion != 0.0 ? dispersion : 1.0);94}95function sigmaDenormalize(value, median, dispersion) {96   return value * (dispersion != 0.0 ? dispersion : 1.0) + median;97}98function findMedianDispersionDescription(descriptions) {99   var values = [];100   for (var i = 0; i != descriptions.length; ++i) {101      values.push(descriptions[i].weight);102   }103   var weight = medianMeanDeviationOfArray(values);104   var values = [];105   for (var i = 0; i != descriptions.length; ++i) {106      values.push(descriptions[i].FWHM);107   }108   var FWHM = medianMeanDeviationOfArray(values);109   var values = [];110   for (var i = 0; i != descriptions.length; ++i) {111      values.push(descriptions[i].FWHMMeanDeviation);112   }113   var FWHMMeanDeviation = medianMeanDeviationOfArray(values);114   var values = [];115   for (var i = 0; i != descriptions.length; ++i) {116      values.push(descriptions[i].eccentricity);117   }118   var eccentricity = medianMeanDeviationOfArray(values);119   var values = [];120   for (var i = 0; i != descriptions.length; ++i) {121      values.push(descriptions[i].eccentricityMeanDeviation);122   }123   var eccentricityMeanDeviation = medianMeanDeviationOfArray(values);124   var values = [];125   for (var i = 0; i != descriptions.length; ++i) {126      values.push(descriptions[i].SNRWeight);127   }128   var SNRWeight = medianMeanDeviationOfArray(values);129   var values = [];130   for (var i = 0; i != descriptions.length; ++i) {131      values.push(descriptions[i].median);132   }133   var median = medianMeanDeviationOfArray(values);134   var values = [];135   for (var i = 0; i != descriptions.length; ++i) {136      values.push(descriptions[i].noise);137   }138   var noise = medianMeanDeviationOfArray(values);139   var values = [];140   for (var i = 0; i != descriptions.length; ++i) {141      values.push(descriptions[i].dispersion);142   }143   var dispersion = medianMeanDeviationOfArray(values);144   var values = [];145   for (var i = 0; i != descriptions.length; ++i) {146      values.push(descriptions[i].starSupport);147   }148   var starSupport = medianMeanDeviationOfArray(values);149   var values = [];150   for (var i = 0; i != descriptions.length; ++i) {151      values.push(descriptions[i].starResidual);152   }153   var starResidual = medianMeanDeviationOfArray(values);154   var values = [];155   for (var i = 0; i != descriptions.length; ++i) {156      values.push(descriptions[i].starResidualMeanDeviation);157   }158   var starResidualMeanDeviation = medianMeanDeviationOfArray(values);159   var values = [];160   for (var i = 0; i != descriptions.length; ++i) {161      values.push(descriptions[i].noiseSupport);162   }163   var noiseSupport = medianMeanDeviationOfArray(values);164   return new evaluationDescription(165      null,166      true,167      false,168      false,169      0,170      weight,171      FWHM,172      FWHMMeanDeviation,173      eccentricity,174      eccentricityMeanDeviation,175      SNRWeight,176      median,177      noise,178      dispersion,179      starSupport,180      starResidual,181      starResidualMeanDeviation,182      noiseSupport,183      "",184      []185   );186}187function selectorExpressionEvaluator(188   expression, description, descriptions, subframeScale, cameraGain, cameraResolution, statistics189) {190   this.expression = expression;191   this.description = description;192   this.descriptions = descriptions;193   this.subframeScale = subframeScale;194   this.cameraGain = cameraGain;195   this.cameraResolution = cameraResolution;196   this.position = 0;197   this.value = true;198   this.errorPosition = 0;199   this.error = null;200   this.savePosition = function() {201      return [this.position, this.errorPosition, this.error];202   }203   this.restorePosition = function(description) {204      this.position = description[0];205      this.errorPosition = description[1];206      this.error = description[2];207   }208   this.medianDispersionDescription =209      findMedianDispersionDescription(this.descriptions);210   this.scaleMedianDispersion = function(medianDispersion, scale) {211      return [scale * medianDispersion[0], scale * medianDispersion[1]];212   }213   this.setError = function(error) {214      if (this.error != null) {215         return;216      }217      this.errorPosition = this.position;218      this.error = error;219   };220   this.setErrorContext = function(error) {221      if (this.error != null) {222         return;223      }224      var prefixMaxLength = 5;225      var prefix = this.expression.substring(0, this.position);226      if (prefix.length > prefixMaxLength) {227         prefix =228            "..." +229            prefix.substring(prefix.length - prefixMaxLength, prefix.length);230      }231      var suffixMaxLength = 20;232      var suffix = this.expression.substring(this.position, this.expression.length);233      if (suffix.length > suffixMaxLength) {234         suffix = suffix.substring(0, suffixMaxLength) + "...";235      }236      this.errorPosition = this.position;237      this.error = error + ": " + prefix + "|" + suffix;238   }239   this.isChar = function(character) {240      return this.position != this.expression.length &&241         this.expression.charAt(this.position) == character;242   };243   this.isString = function(string) {244      return this.position <= this.expression.length - string.length &&245         this.expression.substring(this.position, this.position + string.length) ==246         string;247   };248   this.isDigit = function() {249      if (this.position == this.expression.length) {250         return false;251      }252      return "0" <= this.expression.charAt(this.position) &&253         this.expression.charAt(this.position) <= "9";254   };255   this.isLetter = function() {256      if (this.position == this.expression.length) {257         return false;258      }259      return "a" <= this.expression.charAt(this.position) &&260         this.expression.charAt(this.position) <= "z" ||261         "A" <= this.expression.charAt(this.position) &&262         this.expression.charAt(this.position) <= "Z";263   };264   this.isLetterString = function(string) {265      if (!this.isString(string)) {266         return false;267      }268      this.position += string.length;269      var isLetter = this.isLetter();270      this.position -= string.length;271      return !isLetter;272   }273   this.skipWhiteSpace = function() {274      for (; this.position != this.expression.length;) {275         var c = this.expression.charAt(this.position);276         if (c == " " || c == "\n" || c == "\r" || c == "\t") {277            ++this.position;278         }279         else {280            break;281         }282      }283   };284   this.evaluateNumber = function() {285      var digits = 0;286      var number = 0.0;287      for (; this.isDigit();) {288         ++digits;289         number = number * 10 +290            this.expression.charCodeAt(this.position) - "0".charCodeAt(0);291         ++this.position;292      }293      var dotExponent = 0;294      if (this.isChar(".")) {295         ++this.position;296         for (; this.isDigit();) {297            ++digits;298            number = number * 10 +299               this.expression.charCodeAt(this.position) - "0".charCodeAt(0);300            --dotExponent;301            ++this.position;302         }303      }304      if (digits == 0) {305         this.setErrorContext("number expected");306         return 0.0;307      }308      var eExponent = 0;309      if (this.isChar("e") || this.isChar("E")) {310         ++this.position;311         var sign = 1.0;312         if (this.isChar("-")) {313            sign = -1.0;314            ++this.position;315         }316         else if (this.isChar("+")) {317            sign = 1.0;318            ++this.position;319         }320         else {321            sign = 1.0;322         }323         if (!this.isDigit()) {324            this.setErrorContext("exponent expected");325            return 0.0;326         }327         for (; this.isDigit();) {328            eExponent = eExponent * 10 +329               this.expression.charCodeAt(this.position) - "0".charCodeAt(0);330            ++this.position;331         }332         eExponent = sign * eExponent;333      }334      return number * Math.pow(10.0, dotExponent + eExponent);335   };336   this.evaluateProperty = function(isSelector) {337      var property = "";338      for (; this.isLetter();) {339         property = property + this.expression.charAt(this.position);340         ++this.position;341      }342      this.skipWhiteSpace();343      var value;344      var medianDispersion;345      if (property == "Index") {346         return this.description.index + 1;347      }348      else if (isSelector && property == "Weight") {349         return this.description.weight;350      }351      else if (isSelector && property == "WeightSigma") {352         value = this.description.weight;353         medianDispersion = this.medianDispersionDescription.weight;354         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);355      }356      else if (property == "FWHM") {357         return this.subframeScale * this.description.FWHM;358      }359      else if (property == "FWHMMaximum") {360         return this.subframeScale * statistics.FWHMMaximum;361      }362      else if (property == "FWHMMinimum") {363         return this.subframeScale * statistics.FWHMMinimum;364      }365      else if (property == "FWHMSigma") {366         value = this.subframeScale * this.description.FWHM;367         medianDispersion = this.scaleMedianDispersion(368            this.medianDispersionDescription.FWHM, this.subframeScale369         );370         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);371      }372      else if (property == "FWHMMeanDev") {373         return this.subframeScale * this.description.FWHMMeanDeviation;374      }375      else if (property == "FWHMMeanDevSigma") {376         value = this.subframeScale * this.description.FWHMMeanDeviation;377         medianDispersion = this.scaleMedianDispersion(378            this.medianDispersionDescription.FWHMMeanDeviation, this.subframeScale379         );380         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);381      }382      else if (property == "Eccentricity") {383         return this.description.eccentricity;384      }385      else if (property == "EccentricityMaximum") {386         return statistics.eccentricityMaximum;387      }388      else if (property == "EccentricityMinimum") {389         return statistics.eccentricityMinimum;390      }391      else if (property == "EccentricitySigma") {392         value = this.description.eccentricity;393         medianDispersion = this.medianDispersionDescription.eccentricity;394         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);395      }396      else if (property == "EccentricityMeanDev") {397         return this.description.eccentricityMeanDeviation;398      }399      else if (property == "EccentricityMeanDevSigma") {400         value = this.description.eccentricityMeanDeviation;401         medianDispersion = this.medianDispersionDescription.eccentricityMeanDeviation;402         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);403      }404      else if (property == "SNRWeight") {405         return this.description.SNRWeight;406      }407      else if (property == "SNRWeightMaximum") {408         return statistics.SNRWeightMaximum;409      }410      else if (property == "SNRWeightMinimum") {411         return statistics.SNRWeightMinimum;412      }413      else if (property == "SNRWeightSigma") {414         value = this.description.SNRWeight;415         medianDispersion = this.medianDispersionDescription.SNRWeight;416         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);417      }418      else if (property == "Median") {419         return this.cameraResolution * this.cameraGain *420            pedestalFunction(this.description.median);421      }422      else if (property == "MedianSigma") {423         value = this.cameraResolution * this.cameraGain *424            pedestalFunction(this.description.median);425         medianDispersion = this.scaleMedianDispersion(426            [427               pedestalFunction(this.medianDispersionDescription.median[0]),428               this.medianDispersionDescription.median[1]429            ],430            this.cameraResolution * this.cameraGain431         );432         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);433      }434      else if (property == "Noise") {435         return this.cameraResolution * this.cameraGain * this.description.noise;436      }437      else if (property == "NoiseSigma") {438         value = this.cameraResolution * this.cameraGain * this.description.noise;439         medianDispersion = this.scaleMedianDispersion(440            this.medianDispersionDescription.noise,441            this.cameraResolution * this.cameraGain442         );443         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);444      }445      else if (property == "MeanDeviation") {446         return this.cameraResolution * this.cameraGain * this.description.dispersion;447      }448      else if (property == "MeanDeviationSigma") {449         value = this.cameraResolution * this.cameraGain * this.description.dispersion;450         medianDispersion = this.scaleMedianDispersion(451            this.medianDispersionDescription.dispersion,452            this.cameraResolution * this.cameraGain453         );454         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);455      }456      else if (property == "StarSupport") {457         return this.description.starSupport;458      }459      else if (property == "StarSupportSigma") {460         value = this.description.starSupport;461         medianDispersion = this.medianDispersionDescription.starSupport;462         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);463      }464      else if (property == "StarResidual") {465         return this.description.starResidual;466      }467      else if (property == "StarResidualSigma") {468         value = this.description.starResidual;469         medianDispersion = this.medianDispersionDescription.starResidual;470         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);471      }472      else if (property == "StarResidualMeanDev") {473         return this.description.starResidualMeanDeviation;474      }475      else if (property == "StarResidualMeanDevSigma") {476         value = this.description.starResidualMeanDeviation;477         medianDispersion = this.medianDispersionDescription.starResidualMeanDeviation;478         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);479      }480      else if (property == "NoiseSupport") {481         return this.description.noiseSupport;482      }483      else if (property == "NoiseSupportSigma") {484         value = this.description.noiseSupport;485         medianDispersion = this.medianDispersionDescription.noiseSupport;486         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);487      }488      else if (property != "") {489         this.setError("unknown property: " + property);490         return 0.0;491      }492      else {493         this.setErrorContext("property expected");494         return 0.0;495      }496   };497   this.evaluateTerm = function(isSelector) {498      if (this.isDigit() || this.isChar(".")) {499         var number = this.evaluateNumber();500         this.skipWhiteSpace();501         return number;502      }503      else {504         var property = this.evaluateProperty(isSelector);505         this.skipWhiteSpace();506         return property;507      }508   };509   this.evaluateWeight = function(isSelector) {510      var sign = 1.0;511      if (this.isChar("-")) {512         sign = -1.0;513         ++this.position;514         this.skipWhiteSpace();515      }516      var value;517      if (this.isChar("(")) {518         ++this.position;519         this.skipWhiteSpace();520         value = this.evaluateAddWeight(isSelector);521         this.skipWhiteSpace();522         if (!this.isChar(")")) {523            this.setErrorContext(") expected");524            return 0.0;525         }526         ++this.position;527         this.skipWhiteSpace();528      }529      else {530         value = this.evaluateTerm(isSelector);531         this.skipWhiteSpace();532      }533      var exponent = 1.0;534      if (this.isChar("^")) {535         ++this.position;536         this.skipWhiteSpace();537         exponent = this.evaluateWeight(isSelector);538         this.skipWhiteSpace();539      }540      return sign * (exponent == 1.0 ? value : Math.pow(value, exponent));541   };542   this.evaluateMultiplyWeight = function(isSelector) {543      var value = this.evaluateWeight(isSelector);544      this.skipWhiteSpace();545      for (; this.isChar("*") || this.isChar("/");) {546         var multiply = this.isChar("*");547         ++this.position;548         this.skipWhiteSpace();549         var weight = this.evaluateWeight(isSelector);550         this.skipWhiteSpace();551         value = multiply ? value * weight : value / weight;552      }553      return value;554   };555   this.evaluateAddWeight = function(isSelector) {556      var value = this.evaluateMultiplyWeight(isSelector);557      this.skipWhiteSpace();558      for (; this.isChar("+") || this.isChar("-");) {559         var add = this.isChar("+");560         ++this.position;561         this.skipWhiteSpace();562         var multiplyWeight = this.evaluateMultiplyWeight(isSelector);563         this.skipWhiteSpace();564         value = add ? value + multiplyWeight : value - multiplyWeight;565      }566      return !isNaN(value) && isFinite(value) ? value : 0.0;567   };568   this.evaluateRelation = function() {569      var left = this.evaluateAddWeight(true);570      this.skipWhiteSpace();571      var relation = 0;572      if (this.isString("<=")) {573         ++this.position;574         ++this.position;575         this.skipWhiteSpace();576         relation = 0;577      }578      else if (this.isString(">=")) {579         ++this.position;580         ++this.position;581         this.skipWhiteSpace();582         relation = 1;583      }584      else if (this.isString("==")) {585         ++this.position;586         ++this.position;587         this.skipWhiteSpace();588         relation = 2;589      }590      else if (this.isString("!=")) {591         ++this.position;592         ++this.position;593         this.skipWhiteSpace();594         relation = 3;595      }596      else if (this.isChar("<")) {597         ++this.position;598         this.skipWhiteSpace();599         relation = 5;600      }601      else if (this.isChar(">")) {602         ++this.position;603         this.skipWhiteSpace();604         relation = 6;605      }606      else {607         this.setErrorContext("relational operator expected");608         return false;609      }610      var right = this.evaluateAddWeight(true);611      this.skipWhiteSpace();612      if (relation == 0) {613         return left <= right;614      }615      else if (relation == 1) {616         return left >= right;617      }618      else if (relation == 2) {619         return left == right;620      }621      else if (relation == 3) {622         return left != right;623      }624      else if (relation == 4) {625         return false;626      }627      else if (relation == 5) {628         return left < right;629      }630      else if (relation == 6) {631         return left > right;632      }633      else if (relation == 7) {634         return true;635      }636      else {637         this.setErrorContext("relational operator expected");638         return false;639      }640   }641   this.evaluateConstraint = function() {642      if (this.isChar("!")) {643         ++this.position;644         this.skipWhiteSpace();645         if (!this.isChar("(")) {646            this.setErrorContext("( expected");647            return false;648         }649         ++this.position;650         this.skipWhiteSpace();651         var orSelector = this.evaluateOrSelector();652         this.skipWhiteSpace();653         if (this.isChar(")")) {654            ++this.position;655            this.skipWhiteSpace();656         }657         else {658            this.setErrorContext(") expected");659            return false;660         }661         return !orSelector;662      }663      else if (this.isChar("(")) {664         var position = this.savePosition();665         ++this.position;666         this.skipWhiteSpace();667         var orSelector = this.evaluateOrSelector();668         if (this.error != null) {669            this.restorePosition(position);670            var relation = this.evaluateRelation();671            this.skipWhiteSpace();672            return relation;673         }674         this.skipWhiteSpace();675         if (this.isChar(")")) {676            ++this.position;677            this.skipWhiteSpace();678         }679         else {680            this.setErrorContext(") expected");681            return false;682         }683         return orSelector;684      }685      else if (this.isLetterString("true")) {686         this.position += 4;687         this.skipWhiteSpace();688         return true;689      }690      else if (this.isLetterString("false")) {691         this.position += 5;692         this.skipWhiteSpace();693         return false;694      }695      else {696         var relation = this.evaluateRelation();697         this.skipWhiteSpace();698         return relation;699      }700   };701   this.evaluateAndSelector = function() {702      var value = this.evaluateConstraint();703      this.skipWhiteSpace();704      for (; this.isString("&&");) {705         ++this.position;706         ++this.position;707         this.skipWhiteSpace();708         var constraint = this.evaluateConstraint();709         this.skipWhiteSpace();710         value = value && constraint;711      }712      return value;713   };714   this.evaluateOrSelector = function() {715      var value = this.evaluateAndSelector();716      this.skipWhiteSpace();717      for (; this.isString("||");) {718         ++this.position;719         ++this.position;720         this.skipWhiteSpace();721         var andSelector = this.evaluateAndSelector();722         this.skipWhiteSpace();723         value = value || andSelector;724      }725      return value;726   };727   this.evaluate = function() {728      this.position = 0;729      this.errorPosition = 0;730      this.error = null;731      var value = true;732      this.skipWhiteSpace();733      if (this.position != this.expression.length) {734         value = this.evaluateOrSelector();735         this.skipWhiteSpace();736         if (this.position != this.expression.length) {737            this.setErrorContext("end of expression expected");738         }739      }740      this.value = this.error == null ? value : true;741      return this.value;742   };743}744function weightingExpressionEvaluator(745   expression, description, descriptions, subframeScale, cameraGain, cameraResolution, statistics746) {747   this.expression = expression;748   this.description = description;749   this.descriptions = descriptions;750   this.subframeScale = subframeScale;751   this.cameraGain = cameraGain;752   this.cameraResolution = cameraResolution;753   this.position = 0;754   this.value = 1.0;755   this.errorPosition = 0;756   this.error = null;757   this.medianDispersionDescription =758      findMedianDispersionDescription(this.descriptions);759   this.scaleMedianDispersion = function(medianDispersion, scale) {760      return [scale * medianDispersion[0], scale * medianDispersion[1]];761   }762   this.setError = function(error) {763      if (this.error != null) {764         return;765      }766      this.errorPosition = this.position;767      this.error = error;768   };769   this.setErrorContext = function(error) {770      if (this.error != null) {771         return;772      }773      var prefixMaxLength = 5;774      var prefix = this.expression.substring(0, this.position);775      if (prefix.length > prefixMaxLength) {776         prefix =777            "..." +778            prefix.substring(prefix.length - prefixMaxLength, prefix.length);779      }780      var suffixMaxLength = 20;781      var suffix = this.expression.substring(this.position, this.expression.length);782      if (suffix.length > suffixMaxLength) {783         suffix = suffix.substring(0, suffixMaxLength) + "...";784      }785      this.errorPosition = this.position;786      this.error = error + ": " + prefix + "|" + suffix;787   }788   this.isChar = function(character) {789      return this.position != this.expression.length &&790         this.expression.charAt(this.position) == character;791   };792   this.isString = function(string) {793      return this.position <= this.expression.length - string.length &&794         this.expression.substring(this.position, this.position + string.length) ==795         string;796   };797   this.isDigit = function() {798      if (this.position == this.expression.length) {799         return false;800      }801      return "0" <= this.expression.charAt(this.position) &&802         this.expression.charAt(this.position) <= "9";803   };804   this.isLetter = function() {805      if (this.position == this.expression.length) {806         return false;807      }808      return "a" <= this.expression.charAt(this.position) &&809         this.expression.charAt(this.position) <= "z" ||810         "A" <= this.expression.charAt(this.position) &&811         this.expression.charAt(this.position) <= "Z";812   };813   this.isLetterString = function(string) {814      if (!this.isString(string)) {815         return false;816      }817      this.position += string.length;818      var isLetter = this.isLetter();819      this.position -= string.length;820      return !isLetter;821   }822   this.skipWhiteSpace = function() {823      for (; this.position != this.expression.length;) {824         var c = this.expression.charAt(this.position);825         if (c == " " || c == "\n" || c == "\r" || c == "\t") {826            ++this.position;827         }828         else {829            break;830         }831      }832   };833   this.evaluateNumber = function() {834      var digits = 0;835      var number = 0.0;836      for (; this.isDigit();) {837         ++digits;838         number = number * 10 +839            this.expression.charCodeAt(this.position) - "0".charCodeAt(0);840         ++this.position;841      }842      var dotExponent = 0;843      if (this.isChar(".")) {844         ++this.position;845         for (; this.isDigit();) {846            ++digits;847            number = number * 10 +848               this.expression.charCodeAt(this.position) - "0".charCodeAt(0);849            --dotExponent;850            ++this.position;851         }852      }853      if (digits == 0) {854         this.setErrorContext("number expected");855         return 0.0;856      }857      var eExponent = 0;858      if (this.isChar("e") || this.isChar("E")) {859         ++this.position;860         var sign = 1.0;861         if (this.isChar("-")) {862            sign = -1.0;863            ++this.position;864         }865         else if (this.isChar("+")) {866            sign = 1.0;867            ++this.position;868         }869         else {870            sign = 1.0;871         }872         if (!this.isDigit()) {873            this.setErrorContext("exponent expected");874            return 0.0;875         }876         for (; this.isDigit();) {877            eExponent = eExponent * 10 +878               this.expression.charCodeAt(this.position) - "0".charCodeAt(0);879            ++this.position;880         }881         eExponent = sign * eExponent;882      }883      return number * Math.pow(10.0, dotExponent + eExponent);884   };885   this.evaluateProperty = function(isSelector) {886      var property = "";887      for (; this.isLetter();) {888         property = property + this.expression.charAt(this.position);889         ++this.position;890      }891      this.skipWhiteSpace();892      var value;893      var medianDispersion;894      if (property == "Index") {895         return this.description.index + 1;896      }897      else if (isSelector && property == "Weight") {898         return this.description.weight;899      }900      else if (isSelector && property == "WeightSigma") {901         value = this.description.weight;902         medianDispersion = this.medianDispersionDescription.weight;903         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);904      }905      else if (property == "FWHM") {906         return this.subframeScale * this.description.FWHM;907      }908      else if (property == "FWHMMaximum") {909         return this.subframeScale * statistics.FWHMMaximum;910      }911      else if (property == "FWHMMinimum") {912         return this.subframeScale * statistics.FWHMMinimum;913      }914      else if (property == "FWHMSigma") {915         value = this.subframeScale * this.description.FWHM;916         medianDispersion = this.scaleMedianDispersion(917            this.medianDispersionDescription.FWHM, this.subframeScale918         );919         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);920      }921      else if (property == "FWHMMeanDev") {922         return this.subframeScale * this.description.FWHMMeanDeviation;923      }924      else if (property == "FWHMMeanDevSigma") {925         value = this.subframeScale * this.description.FWHMMeanDeviation;926         medianDispersion = this.scaleMedianDispersion(927            this.medianDispersionDescription.FWHMMeanDeviation, this.subframeScale928         );929         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);930      }931      else if (property == "Eccentricity") {932         return this.description.eccentricity;933      }934      else if (property == "EccentricityMaximum") {935         return statistics.eccentricityMaximum;936      }937      else if (property == "EccentricityMinimum") {938         return statistics.eccentricityMinimum;939      }940      else if (property == "EccentricitySigma") {941         value = this.description.eccentricity;942         medianDispersion = this.medianDispersionDescription.eccentricity;943         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);944      }945      else if (property == "EccentricityMeanDev") {946         return this.description.eccentricityMeanDeviation;947      }948      else if (property == "EccentricityMeanDevSigma") {949         value = this.description.eccentricityMeanDeviation;950         medianDispersion = this.medianDispersionDescription.eccentricityMeanDeviation;951         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);952      }953      else if (property == "SNRWeight") {954         return this.description.SNRWeight;955      }956      else if (property == "SNRWeightMaximum") {957         return statistics.SNRWeightMaximum;958      }959      else if (property == "SNRWeightMinimum") {960         return statistics.SNRWeightMinimum;961      }962      else if (property == "SNRWeightSigma") {963         value = this.description.SNRWeight;964         medianDispersion = this.medianDispersionDescription.SNRWeight;965         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);966      }967      else if (property == "Median") {968         return this.cameraResolution * this.cameraGain *969            pedestalFunction(this.description.median);970      }971      else if (property == "MedianSigma") {972         value = this.cameraResolution * this.cameraGain *973            pedestalFunction(this.description.median);974         medianDispersion = this.scaleMedianDispersion(975            [976               pedestalFunction(this.medianDispersionDescription.median[0]),977               this.medianDispersionDescription.median[1]978            ],979            this.cameraResolution * this.cameraGain980         );981         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);982      }983      else if (property == "Noise") {984         return this.cameraResolution * this.cameraGain * this.description.noise;985      }986      else if (property == "NoiseSigma") {987         value = this.cameraResolution * this.cameraGain * this.description.noise;988         medianDispersion = this.scaleMedianDispersion(989            this.medianDispersionDescription.noise,990            this.cameraResolution * this.cameraGain991         );992         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);993      }994      else if (property == "MeanDeviation") {995         return this.cameraResolution * this.cameraGain * this.description.dispersion;996      }997      else if (property == "MeanDeviationSigma") {998         value = this.cameraResolution * this.cameraGain * this.description.dispersion;999         medianDispersion = this.scaleMedianDispersion(1000            this.medianDispersionDescription.dispersion,1001            this.cameraResolution * this.cameraGain1002         );1003         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);1004      }1005      else if (property == "StarSupport") {1006         return this.description.starSupport;1007      }1008      else if (property == "StarSupportSigma") {1009         value = this.description.starSupport;1010         medianDispersion = this.medianDispersionDescription.starSupport;1011         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);1012      }1013      else if (property == "StarResidual") {1014         return this.description.starResidual;1015      }1016      else if (property == "StarResidualSigma") {1017         value = this.description.starResidual;1018         medianDispersion = this.medianDispersionDescription.starResidual;1019         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);1020      }1021      else if (property == "StarResidualMeanDev") {1022         return this.description.starResidualMeanDeviation;1023      }1024      else if (property == "StarResidualMeanDevSigma") {1025         value = this.description.starResidualMeanDeviation;1026         medianDispersion = this.medianDispersionDescription.starResidualMeanDeviation;1027         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);1028      }1029      else if (property == "NoiseSupport") {1030         return this.description.noiseSupport;1031      }1032      else if (property == "NoiseSupportSigma") {1033         value = this.description.noiseSupport;1034         medianDispersion = this.medianDispersionDescription.noiseSupport;1035         return sigmaNormalize(value, medianDispersion[0], medianDispersion[1]);1036      }1037      else if (property != "") {1038         this.setError("unknown property: " + property);1039         return 0.0;1040      }1041      else {1042         this.setErrorContext("property expected");1043         return 0.0;1044      }1045   };1046   this.evaluateTerm = function(isSelector) {1047      if (this.isDigit() || this.isChar(".")) {1048         var number = this.evaluateNumber();1049         this.skipWhiteSpace();1050         return number;1051      }1052      else {1053         var property = this.evaluateProperty(isSelector);1054         this.skipWhiteSpace();1055         return property;1056      }1057   };1058   this.evaluateWeight = function(isSelector) {1059      var sign = 1.0;1060      if (this.isChar("-")) {1061         sign = -1.0;1062         ++this.position;1063         this.skipWhiteSpace();1064      }1065      var value;1066      if (this.isChar("(")) {1067         ++this.position;1068         this.skipWhiteSpace();1069         value = this.evaluateAddWeight(isSelector);1070         this.skipWhiteSpace();1071         if (!this.isChar(")")) {1072            this.setErrorContext(") expected");1073            return 0.0;1074         }1075         ++this.position;1076         this.skipWhiteSpace();1077      }1078      else {1079         value = this.evaluateTerm(isSelector);1080         this.skipWhiteSpace();1081      }1082      var exponent = 1.0;1083      if (this.isChar("^")) {1084         ++this.position;1085         this.skipWhiteSpace();1086         exponent = this.evaluateWeight(isSelector);1087         this.skipWhiteSpace();1088      }1089      return sign * (exponent == 1.0 ? value : Math.pow(value, exponent));1090   };1091   this.evaluateMultiplyWeight = function(isSelector) {1092      var value = this.evaluateWeight(isSelector);1093      this.skipWhiteSpace();1094      for (; this.isChar("*") || this.isChar("/");) {1095         var multiply = this.isChar("*");1096         ++this.position;1097         this.skipWhiteSpace();1098         var weight = this.evaluateWeight(isSelector);1099         this.skipWhiteSpace();1100         value = multiply ? value * weight : value / weight;1101      }1102      return value;1103   };1104   this.evaluateAddWeight = function(isSelector) {1105      var value = this.evaluateMultiplyWeight(isSelector);1106      this.skipWhiteSpace();1107      for (; this.isChar("+") || this.isChar("-");) {1108         var add = this.isChar("+");1109         ++this.position;1110         this.skipWhiteSpace();1111         var multiplyWeight = this.evaluateMultiplyWeight(isSelector);1112         this.skipWhiteSpace();1113         value = add ? value + multiplyWeight : value - multiplyWeight;1114      }1115      return !isNaN(value) && isFinite(value) ? value : 0.0;1116   };1117   this.evaluate = function() {1118      this.position = 0;1119      this.errorPosition = 0;1120      this.error = null;1121      var value = 0.0;1122      this.skipWhiteSpace();1123      if (this.position != this.expression.length) {1124         value = this.evaluateAddWeight(false);1125         this.skipWhiteSpace();1126         if (this.position != this.expression.length) {1127            this.setErrorContext("end of expression expected");1128         }1129      }1130      this.value = this.error == null ? value : 0.0;1131      return this.value;1132   };1133}1134function selectorExpressionIsValid(expression) {1135   var selectorEvaluator = new selectorExpressionEvaluator(1136      expression,1137      nullEvaluationDescription,1138      [nullEvaluationDescription],1139      parameters.actualSubframeScale(),1140      parameters.actualCameraGain(),1141      parameters.cameraResolutionValues[parameters.cameraResolution],1142      nullEvaluationDescriptionStatistics1143   );1144   selectorEvaluator.evaluate();1145   return selectorEvaluator.error == null;1146}1147function weightingExpressionIsValid(expression) {1148   var weightEvaluator = new weightingExpressionEvaluator(1149      expression,1150      nullEvaluationDescription,1151      [nullEvaluationDescription],1152      parameters.actualSubframeScale(),1153      parameters.actualCameraGain(),1154      parameters.cameraResolutionValues[parameters.cameraResolution],1155      nullEvaluationDescriptionStatistics1156   );1157   weightEvaluator.evaluate();1158   return weightEvaluator.error == null;1159}1160// ----------------------------------------------------------------------------...

MetaCompiler.js

Source:MetaCompiler.js

1/**2 * Wheel, copyright (c) 2017 - present by Arno van der Vegt3 * Distributed under an MIT license: https://arnovandervegt.github.io/wheel/license.txt4**/5const path   = require('../../../shared/lib/path');6const t      = require('../tokenizer/tokenizer');7const errors = require('../errors');8const err    = require('../errors').errors;9const removePadding = function(s) {10        return s.substr(1, s.length - 2);11    };12exports.checkRestTokens = function(iterator, after) {13        let restTokens = iterator.nextUntilLexeme([t.LEXEME_NEWLINE]);14        if (restTokens.tokens.length) {15            throw errors.createError(err.UNEXPECTED_CODE_AFTER_META, restTokens.tokens[0], 'Unexpected code after "#' + after + '".');16        }17    };18exports.MetaCompiler = class {19    constructor(opts) {20        this._globalDefines = opts.globalDefines;21        this._defines       = opts.defines;22        this._resources     = opts.resources;23        this._linter        = opts.linter;24    }25    compileDefine(iterator, token, tokenFilename) {26        token.done      = true;27        token           = iterator.skipWhiteSpace().next();28        if (token.cls !== t.TOKEN_IDENTIFIER) {29            token.filename = tokenFilename;30            throw errors.createError(err.IDENTIFIER_EXPECTED, token, 'Identifier expected.');31        }32        this._linter && this._linter.addDefine(token);33        let defineKey;34        token.done = true;35        defineKey  = token.lexeme;36        token      = iterator.skipWhiteSpace().next();37        token.done = true;38        if ([t.TOKEN_NUMBER, t.TOKEN_STRING].indexOf(token.cls) === -1) {39            token.filename = tokenFilename;40            throw errors.createError(err.NUMBER_OR_STRING_CONSTANT_EXPECTED, token, 'Number or string constant expected.');41        }42        if (token.cls === t.TOKEN_NUMBER) {43            this._defines.add(token, defineKey, token.value);44        } else {45            this._defines.add(token, defineKey, token.lexeme);46        }47        exports.checkRestTokens(iterator, 'define');48    }49    compileImage(iterator, token, tokenFilename) {50        token.done = true;51        token      = iterator.skipWhiteSpace().next();52        token.done = true;53        if (token.cls !== t.TOKEN_STRING) {54            token.filename = tokenFilename;55            throw errors.createError(err.FILENAME_EXPECTED, token, 'Filename expected.');56        }57        let filename = removePadding(token.lexeme);58        if (filename.substr(-4) !== '.rgf') {59            token.filename = tokenFilename;60            throw errors.createError(err.RGF_EXTENSION_EXPECTED, token, '".rgf" Extension expected.');61        }62        let p = iterator.skipWhiteSpace().peek();63        if ((p.cls !== t.TOKEN_META) || (p.lexeme !== t.LEXEME_META_DATA)) {64            token.filename = tokenFilename;65            throw errors.createError(err.DATA_EXPECTED, token, '"' + t.LEXEME_META_DATA + '" Expected.');66        }67        let hasData   = true;68        let dataWidth = null;69        let image     = {filename: filename, data: []};70        while (hasData) {71            token      = iterator.skipWhiteSpace().next();72            token.done = true;73            token      = iterator.skipWhiteSpace().next();74            if (token.cls !== t.TOKEN_STRING) {75                token.filename = tokenFilename;76                throw errors.createError(err.DATA_STRING_EXPECTED, token, 'Data string expected.');77            }78            token.done = true;79            let dataString = removePadding(token.lexeme);80            if (!dataString.length) {81                token.filename = tokenFilename;82                throw errors.createError(err.DATA_STRING_EMPTY, token, 'Data string is empty.');83            }84            if (dataWidth === null) {85                dataWidth = dataString.length;86            } else if (dataString.length !== dataWidth) {87                token.filename = tokenFilename;88                throw errors.createError(err.DATA_STRING_LENGTH_MISMATCH, token, 'Data string length mismatch.');89            }90            let dataLine = [];91            for (let i = 0; i < dataString.length; i++) {92                if ('01'.indexOf(dataString[i]) === -1) {93                    token.filename = tokenFilename;94                    throw errors.createError(err.DATA_STRING_INVALID_CHARACTER, token, 'Data string can only contain "0" or "1".');95                }96                dataLine.push(dataString[i] === '0' ? 0 : 1);97            }98            image.data.push(dataLine);99            hasData = (iterator.skipWhiteSpace().peek().lexeme === t.LEXEME_META_DATA);100        }101        this._resources.add(image.filename, image.data, token);102    }103    compileText(iterator, token, tokenFilename) {104        token.done = true;105        token      = iterator.skipWhiteSpace().next();106        token.done = true;107        if (token.cls !== t.TOKEN_STRING) {108            token.filename = tokenFilename;109            throw errors.createError(err.FILENAME_EXPECTED, token, 'Filename expected.');110        }111        let filename = removePadding(token.lexeme);112        if (filename.substr(-4) !== '.rtf') {113            token.filename = tokenFilename;114            throw errors.createError(err.RTF_EXTENSION_EXPECTED, token, '".rtf" Extension expected.');115        }116        let p = iterator.skipWhiteSpace().peek();117        if ((p.cls !== t.TOKEN_META) || (p.lexeme !== t.LEXEME_META_LINE)) {118            token.filename = tokenFilename;119            throw errors.createError(err.LINE_EXPECTED, token, '"' + t.LEXEME_META_LINE + '" Expected.');120        }121        let hasLines = true;122        let text     = {filename: filename, lines: []};123        while (hasLines) {124            token      = iterator.skipWhiteSpace().next();125            token.done = true;126            token      = iterator.skipWhiteSpace().next();127            if (token.cls !== t.TOKEN_STRING) {128                token.filename = tokenFilename;129                throw errors.createError(err.LINE_STRING_EXPECTED, token, 'Line string expected.');130            }131            token.done = true;132            text.lines.push(removePadding(token.lexeme));133            hasLines = (iterator.skipWhiteSpace().peek().lexeme === t.LEXEME_META_LINE);134        }135        this._resources.add(text.filename, text.lines.join(String.fromCharCode(0x0D)), token);136    }137    compileResource(iterator, token, tokenFilename) {138        token.done = true;139        token      = iterator.skipWhiteSpace().next();140        token.done = true;141        if (token.cls !== t.TOKEN_STRING) {142            token.filename = tokenFilename;143            throw errors.createError(err.FILENAME_EXPECTED, token, 'Filename expected.');144        }145        let filename = removePadding(token.lexeme);146        if (['.rgf', '.rsf', '.rtf', '.rbf', '.wfrm'].indexOf(path.getExtension(filename)) === -1) {147            token.filename = tokenFilename;148            throw errors.createError(err.INVALID_RESOURCE, token, 'Invalid resource.');149        }150        this._resources.add(filename, null, token);151    }152    compileIfdef(iterator, token, defines) {153        token.done = true;154        token      = iterator.skipWhiteSpace().next();155        token.done = true;156        let defined  = (defines.get(token.lexeme) !== false);157        let done     = false;158        let doneElse = false;159        exports.checkRestTokens(iterator, 'ifdef');160        while (true) {161            token = iterator.skipWhiteSpace().next();162            if (token === null) {163                break;164            } else if (token.lexeme === t.LEXEME_META_IFDEF) {165                this.compileIfdef(iterator, token, defines);166            } else if (token.lexeme === t.LEXEME_META_ELSE) {167                if (doneElse) {168                    throw errors.createError(err.UNEXPECTED_META_ELSE, token, 'Duplicate #else.');169                }170                exports.checkRestTokens(iterator, 'else');171                doneElse   = true;172                token.done = true;173                defined    = !defined;174            } else {175                if (!defined) {176                    token.done = true;177                }178                if (token.lexeme === t.LEXEME_META_END) {179                    token.done = true;180                    exports.checkRestTokens(iterator, 'end');181                    break;182                }183            }184        }185    }...

jsonlite.js

Source:jsonlite.js

...18            t: '\t'19        };20        var text = source;21        var result = readValue();22        skipWhitespace();23        if(ch) {24            raiseError("Syntax error");25        }26        return result;27        function raiseError(m) {28            throw {29                name: 'SyntaxError',30                message: m,31                at: at,32                text: text33            };34        }35        function next(c) {36            if(c && c !== ch) {37                raiseError("Expected '" + c + "' instead of '" + ch + "'");38            }39            ch = text.charAt(at);40            at += 1;41            return ch;42        }43        function readString() {44            var s = '';45            if(ch === '"') {46                while(next()) {47                    if(ch === '"') {48                        next();49                        return s;50                    }51                    if(ch === '\\') {52                        next();53                        if(ch === 'u') {54                            var uffff = 0;55                            for(var i = 0; i < 4; i += 1) {56                                var hex = parseInt(next(), 16);57                                if(!isFinite(hex)) {58                                    break;59                                }60                                uffff = uffff * 16 + hex;61                            }62                            s += String.fromCharCode(uffff);63                        } else if(typeof escapee[ch] === 'string') {64                            s += escapee[ch];65                        } else {66                            break;67                        }68                    } else {69                        s += ch;70                    }71                }72            }73            raiseError("Bad string");74        }75        function skipWhitespace() {76            while(ch && ch <= ' ') {77                next();78            }79        }80        function readWord() {81            var s = '';82            while(allowedInWord()) {83                s += ch;84                next();85            }86            if(s === "true") {87                return true;88            }89            if(s === "false") {90                return false;91            }92            if(s === "null") {93                return null;94            }95            if(/^-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?$/.test(s)) {96                return parseFloat(s);97            }98            return s;99        }100        function readArray() {101            var array = [];102            if(ch === '[') {103                next('[');104                skipWhitespace();105                if(ch === ']') {106                    next(']');107                    return array;108                }109                while(ch) {110                    array.push(readValue());111                    skipWhitespace();112                    if(ch === ']') {113                        next(']');114                        return array;115                    }116                    next(',');117                    skipWhitespace();118                }119            }120            raiseError("Bad array");121        }122        function readObject() {123            var o = {124            };125            if(ch === object_start) {126                next(object_start);127                skipWhitespace();128                if(ch === object_end) {129                    next(object_end);130                    return o;131                }132                while(ch) {133                    var key = ch === '"' ? readString() : readWord();134                    if(typeof key !== 'string') {135                        raiseError('Bad object key: ' + key);136                    }137                    skipWhitespace();138                    next(pair_seperator);139                    if(Object.hasOwnProperty.call(o, key)) {140                        raiseError('Duplicate key: "' + key + '"');141                    }142                    o[key] = readValue();143                    skipWhitespace();144                    if(ch === object_end) {145                        next(object_end);146                        return o;147                    }148                    next(',');149                    skipWhitespace();150                }151            }152            raiseError("Bad object");153        }154        function readValue() {155            skipWhitespace();156            switch(ch) {157                case object_start:158                    return readObject();159                case '[':160                    return readArray();161                case '"':162                    return readString();163                default:164                    return readWord();165            }166        }167        function allowedInWord() {168            switch(ch) {169                case '"':...

modernizr-2.6.2.min.js

Source:modernizr-2.6.2.min.js

...18            t: '\t'19        };20        var text = source;21        var result = readValue();22        skipWhitespace();23        if(ch) {24            raiseError("Syntax error");25        }26        return result;27        function raiseError(m) {28            throw {29                name: 'SyntaxError',30                message: m,31                at: at,32                text: text33            };34        }35        function next(c) {36            if(c && c !== ch) {37                raiseError("Expected '" + c + "' instead of '" + ch + "'");38            }39            ch = text.charAt(at);40            at += 1;41            return ch;42        }43        function readString() {44            var s = '';45            if(ch === '"') {46                while(next()) {47                    if(ch === '"') {48                        next();49                        return s;50                    }51                    if(ch === '\\') {52                        next();53                        if(ch === 'u') {54                            var uffff = 0;55                            for(var i = 0; i < 4; i += 1) {56                                var hex = parseInt(next(), 16);57                                if(!isFinite(hex)) {58                                    break;59                                }60                                uffff = uffff * 16 + hex;61                            }62                            s += String.fromCharCode(uffff);63                        } else if(typeof escapee[ch] === 'string') {64                            s += escapee[ch];65                        } else {66                            break;67                        }68                    } else {69                        s += ch;70                    }71                }72            }73            raiseError("Bad string");74        }75        function skipWhitespace() {76            while(ch && ch <= ' ') {77                next();78            }79        }80        function readWord() {81            var s = '';82            while(allowedInWord()) {83                s += ch;84                next();85            }86            if(s === "true") {87                return true;88            }89            if(s === "false") {90                return false;91            }92            if(s === "null") {93                return null;94            }95            if(/^-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?$/.test(s)) {96                return parseFloat(s);97            }98            return s;99        }100        function readArray() {101            var array = [];102            if(ch === '[') {103                next('[');104                skipWhitespace();105                if(ch === ']') {106                    next(']');107                    return array;108                }109                while(ch) {110                    array.push(readValue());111                    skipWhitespace();112                    if(ch === ']') {113                        next(']');114                        return array;115                    }116                    next(',');117                    skipWhitespace();118                }119            }120            raiseError("Bad array");121        }122        function readObject() {123            var o = {124            };125            if(ch === object_start) {126                next(object_start);127                skipWhitespace();128                if(ch === object_end) {129                    next(object_end);130                    return o;131                }132                while(ch) {133                    var key = ch === '"' ? readString() : readWord();134                    if(typeof key !== 'string') {135                        raiseError('Bad object key: ' + key);136                    }137                    skipWhitespace();138                    next(pair_seperator);139                    if(Object.hasOwnProperty.call(o, key)) {140                        raiseError('Duplicate key: "' + key + '"');141                    }142                    o[key] = readValue();143                    skipWhitespace();144                    if(ch === object_end) {145                        next(object_end);146                        return o;147                    }148                    next(',');149                    skipWhitespace();150                }151            }152            raiseError("Bad object");153        }154        function readValue() {155            skipWhitespace();156            switch(ch) {157                case object_start:158                    return readObject();159                case '[':160                    return readArray();161                case '"':162                    return readString();163                default:164                    return readWord();165            }166        }167        function allowedInWord() {168            switch(ch) {169                case '"':...

index.js

Source:index.js

...13    token.assignment = false14    token.declaration = false15    if (type !== 'ident' && type !== 'builtin') continue16    idx = i + 117    skipWhitespace(+1)18    if (tokens[idx].type !== 'operator') continue19    if (!assignments[tokens[idx].data]) continue20    token.assignment = true21  }22  // Determine if a value is being defined, e.g.23  // float x;24  // float x, y, z;25  // float x, y = vec3(sin(1.0 + 3.0)), z;26  // float[3][2] x, y = vec3(sin(1.0 + 3.0)), z;27  // float[][2] x, y = vec3(sin(1.0 + 3.0)), z;28  // float x[2], y = vec3(sin(1.0 + 3.0)), z[4];29  // float x(float y, float z) {};30  // float x(float y[2], Thing[3] z) {};31  // Thing x[2], y = Another(sin(1.0 + 3.0)), z[4];32  for (var i = 0; i < tokens.length; i++) {33    var datatype = tokens[i]34    var type     = datatype.type35    var data     = datatype.data36    datatype.declaration = false37    if (type === 'keyword') {38      if (ignoredKeywords[data]) continue39    } else40    if (type !== 'ident') continue41    idx = i + 142    skipArrayDimensions()43    if (tokens[idx].type !== 'ident') continue44    tokens[idx++].declaration = true45    skipArrayDimensions()46    // Function arguments/parameters47    if (tokens[idx].data === '(') {48      idx++49      skipWhitespace(+1)50      while (tokens[idx] && tokens[idx].data !== ')') {51        if (tokens[idx].type !== 'keyword' && tokens[idx].type !== 'ident') break52        idx++53        skipWhitespace(+1)54        if (tokens[idx].type !== 'ident') continue55        tokens[idx++].declaration = true56        skipWhitespace(+1)57        skipArrayDimensions()58        skipWhitespace(+1)59        if (tokens[idx].data !== ',') continue60        idx++61        skipWhitespace(+1)62      }63      i = idx64      continue65    }66    // Declaration Lists67    while (tokens[idx] && tokens[idx].data !== ';') {68      if (tokens[idx].data === ',') {69        idx++70        skipWhitespace(+1)71        if (tokens[idx].declaration = tokens[idx].type === 'ident') idx++72      } else {73        skipWhitespace(+1)74        skipParens()75        skipWhitespace(+1)76        idx++77      }78    }79    i = idx80  }81  // Handle struct declarations:82  // struct declaration {83  //   float x, y, z;84  //   Other w;85  // } declaration;86  for (var i = 0; i < tokens.length; i++) {87    var token = tokens[i]88    if (token.type !== 'keyword') continue89    if (token.data !== 'struct') continue90    idx = i + 191    skipWhitespace(+1)92    if (tokens[idx].type !== 'ident') continue93    idx++94    skipWhitespace(+1)95    if (tokens[idx++].data !== '{') continue96    skipWhitespace(+1)97    while (tokens[idx].type === 'ident' || tokens[idx].type === 'keyword') {98      do {99        idx++100        skipWhitespace(+1)101        tokens[idx].structMember = true102        tokens[idx].declaration = false103        idx++104        skipArrayDimensions()105      } while (tokens[idx].data === ',')106      if (tokens[idx].data === ';') idx++107      skipWhitespace()108    }109    idx++110    skipWhitespace(+1)111    if (tokens[idx].type !== 'ident') continue112    tokens[idx].declaration = true113    skipWhitespace(+1)114    while (tokens[++idx].data === ',') {115      skipWhitespace(+1)116      idx++117      skipWhitespace(+1)118      if (tokens[idx].type === 'ident') tokens[idx].declaration = true119      skipWhitespace(+1)120    }121  }122  return tokens123  function skipWhitespace(n) {124    while (tokens[idx] && tokens[idx].type === 'whitespace') idx++125  }126  function skipArrayDimensions() {127    while (tokens[idx] && (128         tokens[idx].type === 'integer'129      || tokens[idx].data === '['130      || tokens[idx].data === ']'131      || tokens[idx].type === 'whitespace'132    )) idx++133  }134  function skipParens() {135    if (!tokens[idx]) return136    if (tokens[idx].data !== '(') return137    var depth = 0...

JSON.js

Source:JSON.js

1const CustomJSON={2    parse:function(str,options) {3        this.str = str;4        this.i = 0;5        this.nfirstchars = '-0123456789.';6        this.nchars = '-0123456789.eE';7        this.n8		const res =this.parseValue();9		console.log(res);10        return res;11    },12    isWhiteSpace:function(c) {13        return c==' ' || c=='\r' || c=='\n' || c=='\t';14    },15    skipWhiteSpace:function() {16        while(this.i < this.str.length && this.isWhiteSpace(this.str.charAt(this.i))) this.i++;17    },18    parseValue:function() {19		this.skipWhiteSpace();20        if (this.i == this.str.length) return null;21        var c = this.str.charAt(this.i);22		console.log(c, this.i);23        if (c == '{') return this.parseObject();24        else if (c == '[') return this.parseArray();25        else if (c == '\"') return this.parseString('\"');26        else if (c == '\'') return this.parseString('\'');27        else if (this.nfirstchars.indexOf(c) != -1) return this.parseNumber();28        else if (c == 't') return this.parseLiteral('true',true);29        else if (c == 'f') return this.parseLiteral('false',false);30        else if (c == 'n') return this.parseLiteral('null',null);31        else if (c == 'N') return this.parseLiteral('NaN',NaN);32        else if (c == 'u') return this.parseLiteral('undefined',undefined);33        throw "Invalid json";34    },35    parseLiteral:function(literal, value) {36        if (literal.length > this.str.length - this.i) {37            throw "Expecting " + literal;38        }39        for (var i = 0; i < literal.length; i++) { 40            if (literal.charAt(i) != this.str.charAt(this.i++)) {41                throw "Expecting " + literal;42            }43        }44        return value;45    },46    parseNumber:function() {47        var startIndex = this.i;48        var c;49        while(this.nchars.indexOf(this.str.charAt(this.i)) != -1) {50            this.i++;51        }52        return new Number(this.str.substring(startIndex,this.i));53    },54    parseString:function(quote) {55        var startIndex = ++this.i;56        var c;57        var s = '';58        while((c = this.str.charAt(this.i)) != quote) {59            if (c == '\\') {60                this.i++;61                c = this.str.charAt(this.i);62                if (c == 'r') s += '\r';63                else if (c == 'n') s += '\n';64                else if (c == 't') s += '\t';65                else if (c == 'f') s += '\f';66                // Note escaped unicode not handled67                else s += c;68            } else s += c;69            this.i++;70        }71        this.i++;72        return s;73    },74    parseObject:function() {75        this.i++;76        this.skipWhiteSpace();77        if (this.str.charAt(this.i) == '}') { 78            this.i++;79            return {};80        }81        var o = {};82        var c;83        while(true) {84            var name = this.parseValue();85			console.log('key ',name);86            this.skipWhiteSpace();87            c = this.str.charAt(this.i);88            if (c != ':') throw "Expecting :";89            this.i++;90            this.skipWhiteSpace();91            var value = this.parseValue();92			console.log('value ', value);93            this.skipWhiteSpace();94            o[name] = value;95            c = this.str.charAt(this.i);96            if (c == ',') {97                this.i++;98                this.skipWhiteSpace();99            } else break;100        }101        if ( c != '}' ) {102            Response.Write(this.str.substring(this.i));103            throw "Expecting }";104        }105        this.i++;106        return o;107    },108    parseArray:function() {109        this.i++;110        this.skipWhiteSpace();111        if (this.str.charAt(this.i) == ']') {112            this.i++;113            return [];114        }115        var a = [];116        var c;117        while(true) {118            var value = this.parseValue();119            a.push(value);120            this.skipWhiteSpace();121            c = this.str.charAt(this.i);122            if (c == ',') {123                this.i++;124                this.skipWhiteSpace();125            } else break;126        }127        if ( c != ']' ) {128            throw "Expecting ]";129        }130        this.i++;131        return a;132    }
...

Using AI Code Generation

1const { skipWhitespace } = require('playwright/lib/utils/whitespace');2const { readFileSync } = require('fs');3const { join } = require('path');4const html = readFileSync(join(__dirname, 'test.html'), 'utf8');5console.log(skipWhitespace(html));6const { skipWhitespace } = require('playwright/lib/utils/whitespace');7const { readFileSync } = require('fs');8const { join } = require('path');9const html = readFileSync(join(__dirname, 'test.html'), 'utf8');10console.log(skipWhitespace(html));11const { skipWhitespace } = require('playwright/lib/utils/whitespace');12const { readFileSync } = require('fs');13const { join } = require('path');14const html = readFileSync(join(__dirname, 'test.html'), 'utf8');15console.log(skipWhitespace(html));16const { skipWhitespace } = require('playwright/lib/utils/whitespace');17const { readFileSync } = require('fs');18const { join } = require('path');19const html = readFileSync(join(__dirname, 'test.html'), 'utf8');20console.log(skipWhitespace(html));

Using AI Code Generation

1const { skipWhitespace } = require('playwright/lib/utils/lineWrapper');2const { test } = require('@playwright/test');3test('skipWhitespace', async ({ page }) => {4  World`;5  console.log(skipWhitespace(text, 0));6  console.log(skipWhitespace(text, 1));7  console.log(skipWhitespace(text, 2));8  console.log(skipWhitespace(text, 3));9  console.log(skipWhitespace(text, 4));10  console.log(skipWhitespace(text, 5));11  console.log(skipWhitespace(text, 6));12  console.log(skipWhitespace(text, 7));13  console.log(skipWhitespace(text, 8));14  console.log(skipWhitespace(text, 9));15  console.log(skipWhitespace(text, 10));16  console.log(skipWhitespace(text, 11));17  console.log(skipWhitespace(text, 12));18  console.log(skipWhitespace(text, 13));19  console.log(skipWhitespace(text, 14));20  console.log(skipWhitespace(text, 15));21  console.log(skipWhitespace(text, 16));22  console.log(skipWhitespace(text, 17));23  console.log(skipWhitespace(text, 18));24  console.log(skipWhitespace(text, 19));25  console.log(skipWhitespace(text, 20));26  console.log(skipWhitespace(text, 21));27  console.log(skipWhitespace(text, 22));28  console.log(skipWhitespace(text, 23));29  console.log(skipWhitespace(text, 24));30  console.log(skipWhitespace(text, 25));31  console.log(skipWhitespace(text, 26));32  console.log(skipWhitespace(text, 27));33  console.log(skipWhitespace(text, 28));34  console.log(skipWhitespace(text, 29));35  console.log(skipWhitespace(text, 30));36  console.log(skipWhitespace(text, 31));37  console.log(skipWhitespace(text, 32));38  console.log(skipWhitespace(text, 33));39  console.log(skipWhitespace(text, 34));40  console.log(skipWhitespace(text, 35));41  console.log(skipWhitespace(text, 36));42  console.log(skipWhitespace(text, 37));43  console.log(skipWhitespace(text, 38));44  console.log(skipWhitespace(text, 39));45  console.log(skipWhitespace(text, 40));46  console.log(skipWhitespace(text, 41));47  console.log(skipWhitespace(text, 42));48  console.log(skipWhitespace(text

Using AI Code Generation

1const { skipWhitespace } = require('playwright/lib/utils');2const input = '   hello world';3console.log(skipWhitespace(input, 0, 3));4const { skipWhitespace } = require('playwright/lib/utils');5const input = 'hello world';6console.log(skipWhitespace(input, 0, 0));7const { skipWhitespace } = require('playwright/lib/utils');8const input = 'hello world';9console.log(skipWhitespace(input, 0, 5));10const { skipWhitespace } = require('playwright/lib/utils');11const input = 'hello world';12console.log(skipWhitespace(input, 0, 10));13const { skipWhitespace } = require('playwright/lib/utils');14const input = 'hello world';15console.log(skipWhitespace(input, 0, 11));16const { skipWhitespace } = require('playwright/lib/utils');17const input = 'hello world';18console.log(skipWhitespace(input, 0, 12));19const { skipWhitespace } = require('playwright/lib/utils');20const input = 'hello world';21console.log(skipWhitespace(input, 0, 13));22const { skipWhitespace } = require('playwright/lib/utils');23const input = 'hello world';24console.log(skipWhitespace(input, 0, 14));25const { skipWhitespace } = require('playwright/lib/utils');26const input = 'hello world';27console.log(skipWhitespace(input, 0, 15));28const { skipWhitespace } = require('playwright/lib/utils');29const input = 'hello world';30console.log(skipWhitespace(input, 0, 16));31const { skipWhitespace } = require('playwright/lib/utils');32const input = 'hello world';33console.log(skipWhitespace(input, 0, 17));

Using AI Code Generation

1const { skipWhitespace } = require('@playwright/test/lib/utils/terminalUtils');2const str = '    hello world';3const skipped = skipWhitespace(str);4console.log(skipped);5const { skipWhitespace } = require('@playwright/test/lib/utils/terminalUtils');6const str = '    hello world';7const skipped = skipWhitespace(str);8console.log(skipped);9const { currentTestInfo } = require('@playwright/test/lib/utils/testInfo');10const testInfo = currentTestInfo();11console.log(testInfo.title);12const { currentTestInfo } = require('@playwright/test/lib/utils/testInfo');13const testInfo = currentTestInfo();14console.log(testInfo.title);15const { currentTestInfo } = require('@playwright/test/lib/utils/testInfo');16const testInfo = currentTestInfo();17console.log(testInfo.status);18const { currentTestInfo } = require('@playwright/test/lib/utils/testInfo');19const testInfo = currentTestInfo();20console.log(testInfo.status

Using AI Code Generation

1const { skipWhitespace } = require('playwright/lib/protocol/serializers');2const input = "Hello World";3const output = skipWhitespace(input);4console.log(output);5isWhitespace(char: string): boolean;6const { isWhitespace } = require('playwright/lib/protocol/serializers');7const output = isWhitespace(" ");8console.log(output);9isLineTerminator(char: string): boolean;10const { isLineTerminator } = require('playwright/lib/protocol/serializers');11const output = isLineTerminator("12");13console.log(output);14isDigit(char: string): boolean;15const { isDigit } = require('playwright/lib/protocol/serializers');16const output = isDigit("1");17console.log(output);18isHexDigit(char: string): boolean;19const { isHexDigit } = require('playwright/lib/protocol/serializers');20const output = isHexDigit("A");21console.log(output);22isIdentifierStart(char: string): boolean;23const { isIdentifierStart } = require('playwright/lib/protocol/serializers');24const output = isIdentifierStart("A");25console.log(output);

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.