1 | 'use strict'
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2 |
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3 | const forEach = require('../../utils/array').forEach
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4 | const map = require('../../utils/array').map
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5 |
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6 | function factory (type, config, load, typed) {
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7 | const Node = load(require('./Node'))
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8 | const ResultSet = load(require('../../type/resultset/ResultSet'))
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9 |
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10 | |
11 |
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12 |
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13 |
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14 |
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15 |
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16 |
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17 |
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18 |
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19 | function BlockNode (blocks) {
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20 | if (!(this instanceof BlockNode)) {
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21 | throw new SyntaxError('Constructor must be called with the new operator')
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22 | }
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23 |
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24 |
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25 | if (!Array.isArray(blocks)) throw new Error('Array expected')
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26 | this.blocks = blocks.map(function (block) {
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27 | const node = block && block.node
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28 | const visible = block && block.visible !== undefined ? block.visible : true
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29 |
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30 | if (!type.isNode(node)) throw new TypeError('Property "node" must be a Node')
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31 | if (typeof visible !== 'boolean') throw new TypeError('Property "visible" must be a boolean')
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32 |
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33 | return {
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34 | node: node,
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35 | visible: visible
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36 | }
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37 | })
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38 | }
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39 |
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40 | BlockNode.prototype = new Node()
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41 |
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42 | BlockNode.prototype.type = 'BlockNode'
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43 |
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44 | BlockNode.prototype.isBlockNode = true
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45 |
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46 | |
47 |
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48 |
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49 |
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50 |
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51 |
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52 |
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53 |
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54 |
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55 |
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56 |
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57 |
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58 |
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59 | BlockNode.prototype._compile = function (math, argNames) {
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60 | const evalBlocks = map(this.blocks, function (block) {
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61 | return {
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62 | eval: block.node._compile(math, argNames),
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63 | visible: block.visible
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64 | }
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65 | })
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66 |
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67 | return function evalBlockNodes (scope, args, context) {
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68 | const results = []
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69 |
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70 | forEach(evalBlocks, function evalBlockNode (block) {
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71 | const result = block.eval(scope, args, context)
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72 | if (block.visible) {
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73 | results.push(result)
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74 | }
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75 | })
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76 |
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77 | return new ResultSet(results)
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78 | }
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79 | }
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80 |
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81 | |
82 |
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83 |
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84 |
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85 | BlockNode.prototype.forEach = function (callback) {
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86 | for (let i = 0; i < this.blocks.length; i++) {
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87 | callback(this.blocks[i].node, 'blocks[' + i + '].node', this)
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88 | }
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89 | }
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90 |
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91 | |
92 |
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93 |
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94 |
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95 |
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96 |
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97 | BlockNode.prototype.map = function (callback) {
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98 | const blocks = []
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99 | for (let i = 0; i < this.blocks.length; i++) {
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100 | const block = this.blocks[i]
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101 | const node = this._ifNode(callback(block.node, 'blocks[' + i + '].node', this))
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102 | blocks[i] = {
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103 | node: node,
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104 | visible: block.visible
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105 | }
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106 | }
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107 | return new BlockNode(blocks)
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108 | }
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109 |
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110 | |
111 |
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112 |
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113 |
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114 | BlockNode.prototype.clone = function () {
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115 | const blocks = this.blocks.map(function (block) {
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116 | return {
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117 | node: block.node,
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118 | visible: block.visible
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119 | }
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120 | })
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121 |
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122 | return new BlockNode(blocks)
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123 | }
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124 |
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125 | |
126 |
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127 |
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128 |
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129 |
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130 |
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131 | BlockNode.prototype._toString = function (options) {
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132 | return this.blocks.map(function (param) {
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133 | return param.node.toString(options) + (param.visible ? '' : ';')
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134 | }).join('\n')
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135 | }
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136 |
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137 | |
138 |
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139 |
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140 |
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141 | BlockNode.prototype.toJSON = function () {
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142 | return {
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143 | mathjs: 'BlockNode',
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144 | blocks: this.blocks
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145 | }
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146 | }
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147 |
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148 | |
149 |
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150 |
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151 |
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152 |
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153 |
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154 |
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155 | BlockNode.fromJSON = function (json) {
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156 | return new BlockNode(json.blocks)
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157 | }
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158 |
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159 | |
160 |
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161 |
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162 |
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163 |
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164 |
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165 | BlockNode.prototype.toHTML = function (options) {
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166 | return this.blocks.map(function (param) {
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167 | return param.node.toHTML(options) + (param.visible ? '' : '<span class="math-separator">;</span>')
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168 | }).join('<span class="math-separator"><br /></span>')
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169 | }
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170 |
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171 | |
172 |
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173 |
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174 |
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175 |
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176 | BlockNode.prototype._toTex = function (options) {
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177 | return this.blocks.map(function (param) {
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178 | return param.node.toTex(options) + (param.visible ? '' : ';')
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179 | }).join('\\;\\;\n')
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180 | }
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181 |
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182 | return BlockNode
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183 | }
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184 |
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185 | exports.name = 'BlockNode'
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186 | exports.path = 'expression.node'
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187 | exports.factory = factory
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