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