Current File : //www/specpages-backup/node_modules/less/lib/less/tree/dimension.js.map
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Node from './node';\nimport unitConversions from '../data/unit-conversions';\nimport Unit from './unit';\nimport Color from './color';\n\n//\n// A number with a unit\n//\nconst Dimension = function(value, unit) {\n this.value = parseFloat(value);\n if (isNaN(this.value)) {\n throw new Error('Dimension is not a number.');\n }\n this.unit = (unit && unit instanceof Unit) ? unit :\n new Unit(unit ? [unit] : undefined);\n this.setParent(this.unit, this);\n};\n\nDimension.prototype = new Node();\n\nDimension.prototype.accept = function(visitor) {\n this.unit = visitor.visit(this.unit);\n};\n\nDimension.prototype.eval = function(context) {\n return this;\n};\n\nDimension.prototype.toColor = function() {\n return new Color([this.value, this.value, this.value]);\n};\n\nDimension.prototype.genCSS = function(context, output) {\n if ((context && context.strictUnits) && !this.unit.isSingular()) {\n throw new Error(`Multiple units in dimension. Correct the units or use the unit function. Bad unit: ${this.unit.toString()}`);\n }\n\n const value = this.fround(context, this.value);\n let strValue = String(value);\n\n if (value !== 0 && value < 0.000001 && value > -0.000001) {\n // would be output 1e-6 etc.\n strValue = value.toFixed(20).replace(/0+$/, '');\n }\n\n if (context && context.compress) {\n // Zero values doesn't need a unit\n if (value === 0 && this.unit.isLength()) {\n output.add(strValue);\n return;\n }\n\n // Float values doesn't need a leading zero\n if (value > 0 && value < 1) {\n strValue = (strValue).substr(1);\n }\n }\n\n output.add(strValue);\n this.unit.genCSS(context, output);\n};\n\n// In an operation between two Dimensions,\n// we default to the first Dimension's unit,\n// so `1px + 2` will yield `3px`.\nDimension.prototype.operate = function(context, op, other) {\n /* jshint noempty:false */\n let value = this._operate(context, op, this.value, other.value);\n\n let unit = this.unit.clone();\n\n if (op === '+' || op === '-') {\n if (unit.numerator.length === 0 && unit.denominator.length === 0) {\n unit = other.unit.clone();\n if (this.unit.backupUnit) {\n unit.backupUnit = this.unit.backupUnit;\n }\n } else if (other.unit.numerator.length === 0 && unit.denominator.length === 0) {\n // do nothing\n } else {\n other = other.convertTo(this.unit.usedUnits());\n\n if (context.strictUnits && other.unit.toString() !== unit.toString()) {\n throw new Error(`Incompatible units. Change the units or use the unit function. ` + \n `Bad units: '${unit.toString()}' and '${other.unit.toString()}'.`);\n }\n\n value = this._operate(context, op, this.value, other.value);\n }\n } else if (op === '*') {\n unit.numerator = unit.numerator.concat(other.unit.numerator).sort();\n unit.denominator = unit.denominator.concat(other.unit.denominator).sort();\n unit.cancel();\n } else if (op === '/') {\n unit.numerator = unit.numerator.concat(other.unit.denominator).sort();\n unit.denominator = unit.denominator.concat(other.unit.numerator).sort();\n unit.cancel();\n }\n return new Dimension(value, unit);\n};\n\nDimension.prototype.compare = function(other) {\n let a;\n let b;\n\n if (!(other instanceof Dimension)) {\n return undefined;\n }\n\n if (this.unit.isEmpty() || other.unit.isEmpty()) {\n a = this;\n b = other;\n } else {\n a = this.unify();\n b = other.unify();\n if (a.unit.compare(b.unit) !== 0) {\n return undefined;\n }\n }\n\n return Node.numericCompare(a.value, b.value);\n};\n\nDimension.prototype.unify = function() {\n return this.convertTo({ length: 'px', duration: 's', angle: 'rad' });\n};\n\nDimension.prototype.convertTo = function(conversions) {\n let value = this.value;\n const unit = this.unit.clone();\n let i;\n let groupName;\n let group;\n let targetUnit;\n let derivedConversions = {};\n let applyUnit;\n\n if (typeof conversions === 'string') {\n for (i in unitConversions) {\n if (unitConversions[i].hasOwnProperty(conversions)) {\n derivedConversions = {};\n derivedConversions[i] = conversions;\n }\n }\n conversions = derivedConversions;\n }\n applyUnit = (atomicUnit, denominator) => {\n /* jshint loopfunc:true */\n if (group.hasOwnProperty(atomicUnit)) {\n if (denominator) {\n value = value / (group[atomicUnit] / group[targetUnit]);\n } else {\n value = value * (group[atomicUnit] / group[targetUnit]);\n }\n\n return targetUnit;\n }\n\n return atomicUnit;\n };\n\n for (groupName in conversions) {\n if (conversions.hasOwnProperty(groupName)) {\n targetUnit = conversions[groupName];\n group = unitConversions[groupName];\n\n unit.map(applyUnit);\n }\n }\n\n unit.cancel();\n\n return new Dimension(value, unit);\n};\n\nDimension.prototype.type = 'Dimension';\nexport default Dimension;\n"]}
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