Current File : //www/specpages-backup/node_modules/less/lib/less/tree/node.js.map
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* The reason why Node is a class and other nodes simply do not extend\n * from Node (since we're transpiling) is due to this issue:\n * \n * https://github.com/less/less.js/issues/3434\n */\nclass Node {\n constructor() {\n this.parent = null;\n this.visibilityBlocks = undefined;\n this.nodeVisible = undefined;\n this.rootNode = null;\n this.parsed = null;\n\n const self = this;\n Object.defineProperty(this, 'currentFileInfo', {\n get: function() { return self.fileInfo(); }\n });\n Object.defineProperty(this, 'index', {\n get: function() { return self.getIndex(); }\n });\n\n }\n\n setParent(nodes, parent) {\n function set(node) {\n if (node && node instanceof Node) {\n node.parent = parent;\n }\n }\n if (Array.isArray(nodes)) {\n nodes.forEach(set);\n }\n else {\n set(nodes);\n }\n }\n\n getIndex() {\n return this._index || (this.parent && this.parent.getIndex()) || 0;\n }\n\n fileInfo() {\n return this._fileInfo || (this.parent && this.parent.fileInfo()) || {};\n }\n\n isRulesetLike() {\n return false;\n }\n\n toCSS(context) {\n const strs = [];\n this.genCSS(context, {\n add: function(chunk, fileInfo, index) {\n strs.push(chunk);\n },\n isEmpty: function () {\n return strs.length === 0;\n }\n });\n return strs.join('');\n }\n\n genCSS(context, output) {\n output.add(this.value);\n }\n\n accept(visitor) {\n this.value = visitor.visit(this.value);\n }\n\n eval() { return this; }\n\n _operate(context, op, a, b) {\n switch (op) {\n case '+': return a + b;\n case '-': return a - b;\n case '*': return a * b;\n case '/': return a / b;\n }\n }\n\n fround(context, value) {\n const precision = context && context.numPrecision;\n // add \"epsilon\" to ensure numbers like 1.000000005 (represented as 1.000000004999...) are properly rounded:\n return (precision) ? Number((value + 2e-16).toFixed(precision)) : value;\n }\n\n // Returns true if this node represents root of ast imported by reference\n blocksVisibility() {\n if (this.visibilityBlocks == null) {\n this.visibilityBlocks = 0;\n }\n return this.visibilityBlocks !== 0;\n }\n\n addVisibilityBlock() {\n if (this.visibilityBlocks == null) {\n this.visibilityBlocks = 0;\n }\n this.visibilityBlocks = this.visibilityBlocks + 1;\n }\n\n removeVisibilityBlock() {\n if (this.visibilityBlocks == null) {\n this.visibilityBlocks = 0;\n }\n this.visibilityBlocks = this.visibilityBlocks - 1;\n }\n\n // Turns on node visibility - if called node will be shown in output regardless\n // of whether it comes from import by reference or not\n ensureVisibility() {\n this.nodeVisible = true;\n }\n\n // Turns off node visibility - if called node will NOT be shown in output regardless\n // of whether it comes from import by reference or not\n ensureInvisibility() {\n this.nodeVisible = false;\n }\n\n // return values:\n // false - the node must not be visible\n // true - the node must be visible\n // undefined or null - the node has the same visibility as its parent\n isVisible() {\n return this.nodeVisible;\n }\n\n visibilityInfo() {\n return {\n visibilityBlocks: this.visibilityBlocks,\n nodeVisible: this.nodeVisible\n };\n }\n\n copyVisibilityInfo(info) {\n if (!info) {\n return;\n }\n this.visibilityBlocks = info.visibilityBlocks;\n this.nodeVisible = info.nodeVisible;\n }\n}\n\nNode.compare = (a, b) => {\n /* returns:\n -1: a < b\n 0: a = b\n 1: a > b\n and *any* other value for a != b (e.g. undefined, NaN, -2 etc.) */\n\n if ((a.compare) &&\n // for \"symmetric results\" force toCSS-based comparison\n // of Quoted or Anonymous if either value is one of those\n !(b.type === 'Quoted' || b.type === 'Anonymous')) {\n return a.compare(b);\n } else if (b.compare) {\n return -b.compare(a);\n } else if (a.type !== b.type) {\n return undefined;\n }\n\n a = a.value;\n b = b.value;\n if (!Array.isArray(a)) {\n return a === b ? 0 : undefined;\n }\n if (a.length !== b.length) {\n return undefined;\n }\n for (let i = 0; i < a.length; i++) {\n if (Node.compare(a[i], b[i]) !== 0) {\n return undefined;\n }\n }\n return 0;\n};\n\nNode.numericCompare = (a, b) => a < b ? -1\n : a === b ? 0\n : a > b ? 1 : undefined;\nexport default Node;\n"]}
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