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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _postcssSelectorParser = require('postcss-selector-parser');
var _postcssSelectorParser2 = _interopRequireDefault(_postcssSelectorParser);
var _reduceCssCalc = require('reduce-css-calc');
var _reduceCssCalc2 = _interopRequireDefault(_reduceCssCalc);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var MATCH_CALC = /((?:\-[a-z]+\-)?calc)/;
function transformValue(value, options, result, item) {
if (!value) {
return value;
}
var reduced = (0, _reduceCssCalc2.default)(value, options.precision);
// if the warnWhenCannotResolve option is on, inform the user that the calc
// expression could not be resolved to a single value
if (options.warnWhenCannotResolve && MATCH_CALC.test(reduced)) {
result.warn("Could not reduce expression: " + value, { plugin: 'postcss-calc', node: item });
}
return reduced;
}
function transformSelector(value, options, result, item) {
return (0, _postcssSelectorParser2.default)(function (selectors) {
selectors.walk(function (node) {
// attribute value
// e.g. the "calc(3*3)" part of "div[data-size="calc(3*3)"]"
if (node.type === 'attribute') {
var val = transformValue(node.raws.unquoted, options, result, item);
node.value = node.quoted ? '"' + val + '"' : val;
}
// tag value
// e.g. the "calc(3*3)" part of "div:nth-child(2n + calc(3*3))"
if (node.type === 'tag') node.value = transformValue(node.value, options, result, item);
return;
});
}).process(value).result.toString();
}
exports.default = function (node, property, options, result) {
var value = property === "selector" ? transformSelector(node[property], options, result, node) : transformValue(node[property], options, result, node);
// if the preserve option is enabled and the value has changed, write the
// transformed value into a cloned node which is inserted before the current
// node, preserving the original value. Otherwise, overwrite the original
// value.
if (options.preserve && node[property] !== value) {
var clone = node.clone();
clone[property] = value;
node.parent.insertBefore(node, clone);
} else node[property] = value;
};
module.exports = exports['default'];
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