How to use ExpressionBuilderVisitor method in wpt

Best JavaScript code snippet using wpt

function.ts

Source:function.ts

...1454        return null;1455      }1456      const result:string[] = [];1457      for (const instruction of instructions) {1458        const statementBuilder = new ExpressionBuilderVisitor();1459        instruction.visit(statementBuilder);1460        result.push(statementBuilder.toString());1461      }1462      for (let i = 0, ii = stack.length; i < ii; i++) {1463        const expr = stack[i],1464          statementBuilder = new ExpressionBuilderVisitor();1465        expr.visit( statementBuilder );1466        const min = range[i * 2],1467          max = range[i * 2 + 1];1468        const out:(number|string)[] = [ statementBuilder.toString() ];1469        if( min > (<AstMinMax>expr).min )1470        {1471          out.unshift("Math.max(", min, ", ");1472          out.push(")");1473        }1474        if( max < (<AstMinMax>expr).max )1475        {1476          out.unshift("Math.min(", max, ", ");1477          out.push(")");1478        }...

function.js

Source:function.js

...765  AstVariableDefinition.prototype = Object.create(AstNode.prototype);766  AstVariableDefinition.prototype.visit = function (visitor) {767    visitor.visitVariableDefinition(this);768  };769  function ExpressionBuilderVisitor() {770    this.parts = [];771  }772  ExpressionBuilderVisitor.prototype = {773    visitArgument: function (arg) {774      this.parts.push('Math.max(', arg.min, ', Math.min(',775                      arg.max, ', src[srcOffset + ', arg.index, ']))');776    },777    visitVariable: function (variable) {778      this.parts.push('v', variable.index);779    },780    visitLiteral: function (literal) {781      this.parts.push(literal.number);782    },783    visitBinaryOperation: function (operation) {784      this.parts.push('(');785      operation.arg1.visit(this);786      this.parts.push(' ', operation.op, ' ');787      operation.arg2.visit(this);788      this.parts.push(')');789    },790    visitVariableDefinition: function (definition) {791      this.parts.push('var ');792      definition.variable.visit(this);793      this.parts.push(' = ');794      definition.arg.visit(this);795      this.parts.push(';');796    },797    visitMin: function (max) {798      this.parts.push('Math.min(');799      max.arg.visit(this);800      this.parts.push(', ', max.max, ')');801    },802    toString: function () {803      return this.parts.join('');804    }805  };806  function buildAddOperation(num1, num2) {807    if (num2.type === 'literal' && num2.number === 0) {808      // optimization: second operand is 0809      return num1;810    }811    if (num1.type === 'literal' && num1.number === 0) {812      // optimization: first operand is 0813      return num2;814    }815    if (num2.type === 'literal' && num1.type === 'literal') {816      // optimization: operands operand are literals817      return new AstLiteral(num1.number + num2.number);818    }819    return new AstBinaryOperation('+', num1, num2,820                                  num1.min + num2.min, num1.max + num2.max);821  }822  function buildMulOperation(num1, num2) {823    if (num2.type === 'literal') {824      // optimization: second operands is a literal...825      if (num2.number === 0) {826        return new AstLiteral(0); // and it's 0827      } else if (num2.number === 1) {828        return num1; // and it's 1829      } else if (num1.type === 'literal') {830        // ... and first operands is a literal too831        return new AstLiteral(num1.number * num2.number);832      }833    }834    if (num1.type === 'literal') {835      // optimization: first operands is a literal...836      if (num1.number === 0) {837        return new AstLiteral(0); // and it's 0838      } else if (num1.number === 1) {839        return num2; // and it's 1840      }841    }842    var min = Math.min(num1.min * num2.min, num1.min * num2.max,843                       num1.max * num2.min, num1.max * num2.max);844    var max = Math.max(num1.min * num2.min, num1.min * num2.max,845                       num1.max * num2.min, num1.max * num2.max);846    return new AstBinaryOperation('*', num1, num2, min, max);847  }848  function buildSubOperation(num1, num2) {849    if (num2.type === 'literal') {850      // optimization: second operands is a literal...851      if (num2.number === 0) {852        return num1; // ... and it's 0853      } else if (num1.type === 'literal') {854        // ... and first operands is a literal too855        return new AstLiteral(num1.number - num2.number);856      }857    }858    if (num2.type === 'binary' && num2.op === '-' &&859      num1.type === 'literal' && num1.number === 1 &&860      num2.arg1.type === 'literal' && num2.arg1.number === 1) {861      // optimization for case: 1 - (1 - x)862      return num2.arg2;863    }864    return new AstBinaryOperation('-', num1, num2,865                                  num1.min - num2.max, num1.max - num2.min);866  }867  function buildMinOperation(num1, max) {868    if (num1.min >= max) {869      // optimization: num1 min value is not less than required max870      return new AstLiteral(max); // just returning max871    } else if (num1.max <= max) {872      // optimization: num1 max value is not greater than required max873      return num1; // just returning an argument874    }875    return new AstMin(num1, max);876  }877  function PostScriptCompiler() {}878  PostScriptCompiler.prototype = {879    compile: function PostScriptCompiler_compile(code, domain, range) {880      var stack = [];881      var i, ii;882      var instructions = [];883      var inputSize = domain.length >> 1, outputSize = range.length >> 1;884      var lastRegister = 0;885      var n, j, min, max;886      var num1, num2, ast1, ast2, tmpVar, item;887      for (i = 0; i < inputSize; i++) {888        stack.push(new AstArgument(i, domain[i * 2], domain[i * 2 + 1]));889      }890      for (i = 0, ii = code.length; i < ii; i++) {891        item = code[i];892        if (typeof item === 'number') {893          stack.push(new AstLiteral(item));894          continue;895        }896        switch (item) {897          case 'add':898            if (stack.length < 2) {899              return null;900            }901            num2 = stack.pop();902            num1 = stack.pop();903            stack.push(buildAddOperation(num1, num2));904            break;905          case 'cvr':906            if (stack.length < 1) {907              return null;908            }909            break;910          case 'mul':911            if (stack.length < 2) {912              return null;913            }914            num2 = stack.pop();915            num1 = stack.pop();916            stack.push(buildMulOperation(num1, num2));917            break;918          case 'sub':919            if (stack.length < 2) {920              return null;921            }922            num2 = stack.pop();923            num1 = stack.pop();924            stack.push(buildSubOperation(num1, num2));925            break;926          case 'exch':927            if (stack.length < 2) {928              return null;929            }930            ast1 = stack.pop(); ast2 = stack.pop();931            stack.push(ast1, ast2);932            break;933          case 'pop':934            if (stack.length < 1) {935              return null;936            }937            stack.pop();938            break;939          case 'index':940            if (stack.length < 1) {941              return null;942            }943            num1 = stack.pop();944            if (num1.type !== 'literal') {945              return null;946            }947            n = num1.number;948            if (n < 0 || (n|0) !== n || stack.length < n) {949              return null;950            }951            ast1 = stack[stack.length - n - 1];952            if (ast1.type === 'literal' || ast1.type === 'var') {953              stack.push(ast1);954              break;955            }956            tmpVar = new AstVariable(lastRegister++, ast1.min, ast1.max);957            stack[stack.length - n - 1] = tmpVar;958            stack.push(tmpVar);959            instructions.push(new AstVariableDefinition(tmpVar, ast1));960            break;961          case 'dup':962            if (stack.length < 1) {963              return null;964            }965            if (typeof code[i + 1] === 'number' && code[i + 2] === 'gt' &&966                code[i + 3] === i + 7 && code[i + 4] === 'jz' &&967                code[i + 5] === 'pop' && code[i + 6] === code[i + 1]) {968              // special case of the commands sequence for the min operation969              num1 = stack.pop();970              stack.push(buildMinOperation(num1, code[i + 1]));971              i += 6;972              break;973            }974            ast1 = stack[stack.length - 1];975            if (ast1.type === 'literal' || ast1.type === 'var') {976              // we don't have to save into intermediate variable a literal or977              // variable.978              stack.push(ast1);979              break;980            }981            tmpVar = new AstVariable(lastRegister++, ast1.min, ast1.max);982            stack[stack.length - 1] = tmpVar;983            stack.push(tmpVar);984            instructions.push(new AstVariableDefinition(tmpVar, ast1));985            break;986          case 'roll':987            if (stack.length < 2) {988              return null;989            }990            num2 = stack.pop();991            num1 = stack.pop();992            if (num2.type !== 'literal' || num1.type !== 'literal') {993              // both roll operands must be numbers994              return null;995            }996            j = num2.number;997            n = num1.number;998            if (n <= 0 || (n|0) !== n || (j|0) !== j || stack.length < n) {999              // ... and integers1000              return null;1001            }1002            j = ((j % n) + n) % n;1003            if (j === 0) {1004              break; // just skipping -- there are nothing to rotate1005            }1006            Array.prototype.push.apply(stack,1007                                       stack.splice(stack.length - n, n - j));1008            break;1009          default:1010            return null; // unsupported operator1011        }1012      }1013      if (stack.length !== outputSize) {1014        return null;1015      }1016      var result = [];1017      instructions.forEach(function (instruction) {1018        var statementBuilder = new ExpressionBuilderVisitor();1019        instruction.visit(statementBuilder);1020        result.push(statementBuilder.toString());1021      });1022      stack.forEach(function (expr, i) {1023        var statementBuilder = new ExpressionBuilderVisitor();1024        expr.visit(statementBuilder);1025        var min = range[i * 2], max = range[i * 2 + 1];1026        var out = [statementBuilder.toString()];1027        if (min > expr.min) {1028          out.unshift('Math.max(', min, ', ');1029          out.push(')');1030        }1031        if (max < expr.max) {1032          out.unshift('Math.min(', max, ', ');1033          out.push(')');1034        }1035        out.unshift('dest[destOffset + ', i, '] = ');1036        out.push(';');1037        result.push(out.join(''));...

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var query = wptools.page('Albert_Einstein')4  .lang('en')5  .format('json')6  .get();7query.then(function(data) {8  fs.writeFile('test.json', JSON.stringify(data, null, 2), function(err) {9    if (err) throw err;10    console.log('It\'s saved!');11  });12});13query.catch(function(err) {14  console.log(err);15});16var wptools = require('wptools');17var fs = require('fs');18var query = wptools.page('Albert_Einstein')19  .lang('en')20  .format('json')21  .get();22query.then(function(data) {23  fs.writeFile('test2.json', JSON.stringify(data, null, 2), function(err) {24    if (err) throw err;25    console.log('It\'s saved!');26  });27});28query.catch(function(err) {29  console.log(err);30});31var wptools = require('wptools');32var fs = require('fs');33var query = wptools.page('Albert_Einstein')34  .lang('en')35  .format('json')36  .get();37query.then(function(data) {38  fs.writeFile('test3.json', JSON.stringify(data, null, 2), function(err) {39    if (err) throw err;40    console.log('It\'s saved!');41  });42});43query.catch(function(err) {44  console.log(err);45});46var wptools = require('wptools');47var fs = require('fs');48var query = wptools.page('Albert_Einstein')49  .lang('en')50  .format('json')51  .get();52query.then(function(data) {53  fs.writeFile('test4.json', JSON.stringify(data, null, 2), function(err) {54    if (err) throw err;55    console.log('It\'s saved!');56  });57});58query.catch(function(err) {59  console.log(err);60});

Using AI Code Generation

1var wptools = require('wptools');2var page = wptools.page('Albert Einstein');3page.get(function(err, info) {4  var expression = page.getExpressionBuilderVisitor().visit(info);5  console.log(expression);6});7The ExpressionBuilderVisitor is available as a standalone library in the `dist` folder. The library is available as a UMD module and can be used with AMD, CommonJS and as a global variable. The library depends on the [wikibase-sdk](

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