forked from zhurui/management
68 lines
1.7 KiB
JavaScript
68 lines
1.7 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = _default;
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var order = {
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"*": 0,
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"/": 0,
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"+": 1,
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"-": 1
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};
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function round(value, prec) {
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if (prec !== false) {
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var precision = Math.pow(10, prec);
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return Math.round(value * precision) / precision;
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}
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return value;
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}
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function stringify(node, prec) {
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switch (node.type) {
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case "MathExpression":
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{
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var left = node.left,
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right = node.right,
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op = node.operator;
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var str = "";
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if (left.type === 'MathExpression' && order[op] < order[left.operator]) str += `(${stringify(left, prec)})`;else str += stringify(left, prec);
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str += order[op] ? ` ${node.operator} ` : node.operator;
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if (right.type === 'MathExpression' && order[op] < order[right.operator]) str += `(${stringify(right, prec)})`;else str += stringify(right, prec);
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return str;
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}
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case "Value":
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return round(node.value, prec);
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case 'Function':
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return node.value;
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default:
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return round(node.value, prec) + node.unit;
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}
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}
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function _default(calc, node, originalValue, options, result, item) {
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var str = stringify(node, options.precision);
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if (node.type === "MathExpression") {
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// if calc expression couldn't be resolved to a single value, re-wrap it as
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// a calc()
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str = `${calc}(${str})`; // if the warnWhenCannotResolve option is on, inform the user that the calc
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// expression could not be resolved to a single value
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if (options.warnWhenCannotResolve) {
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result.warn("Could not reduce expression: " + originalValue, {
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plugin: 'postcss-calc',
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node: item
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});
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}
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}
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return str;
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}
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module.exports = exports.default;
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