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org.lesscss.mojo.js.less.tree.selector.js Maven / Gradle / Ivy
(function (tree) {
tree.Selector = function (elements, extendList, condition, index, currentFileInfo, isReferenced) {
this.elements = elements;
this.extendList = extendList || [];
this.condition = condition;
this.currentFileInfo = currentFileInfo || {};
this.isReferenced = isReferenced;
if (!condition) {
this.evaldCondition = true;
}
};
tree.Selector.prototype = {
type: "Selector",
accept: function (visitor) {
this.elements = visitor.visit(this.elements);
this.extendList = visitor.visit(this.extendList);
this.condition = visitor.visit(this.condition);
},
createDerived: function(elements, extendList, evaldCondition) {
/*jshint eqnull:true */
evaldCondition = evaldCondition != null ? evaldCondition : this.evaldCondition;
var newSelector = new(tree.Selector)(elements, extendList || this.extendList, this.condition, this.index, this.currentFileInfo, this.isReferenced);
newSelector.evaldCondition = evaldCondition;
return newSelector;
},
match: function (other) {
var elements = this.elements,
len = elements.length,
oelements, olen, max, i;
oelements = other.elements.slice(
(other.elements.length && other.elements[0].value === "&") ? 1 : 0);
olen = oelements.length;
max = Math.min(len, olen);
if (olen === 0 || len < olen) {
return 0;
} else {
for (i = 0; i < max; i++) {
if (elements[i].value !== oelements[i].value) {
return 0;
}
}
}
return max; // return number of matched selectors
},
eval: function (env) {
var evaldCondition = this.condition && this.condition.eval(env);
return this.createDerived(this.elements.map(function (e) {
return e.eval(env);
}), this.extendList.map(function(extend) {
return extend.eval(env);
}), evaldCondition);
},
genCSS: function (env, output) {
var i, element;
if ((!env || !env.firstSelector) && this.elements[0].combinator.value === "") {
output.add(' ', this.currentFileInfo, this.index);
}
if (!this._css) {
//TODO caching? speed comparison?
for(i = 0; i < this.elements.length; i++) {
element = this.elements[i];
element.genCSS(env, output);
}
}
},
toCSS: tree.toCSS,
markReferenced: function () {
this.isReferenced = true;
},
getIsReferenced: function() {
return !this.currentFileInfo.reference || this.isReferenced;
},
getIsOutput: function() {
return this.evaldCondition;
}
};
})(require('../tree'));