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e.Selector(t),this.arguments=n,this.index=i,this.currentFileInfo=r,this.important=s},e.mixin.Call.prototype={type:"MixinCall",accept:function(e){this.selector=e.visit(this.selector),this.arguments=e.visit(this.arguments)},eval:function(t){var n,i,r,s,o,a,l,u,c,h=[],f=!1;for(r=this.arguments&&this.arguments.map(function(e){return{name:e.name,value:e.value.eval(t)}}),s=0;s<t.frames.length;s++)if((n=t.frames[s].find(this.selector)).length>0){for(u=!0,o=0;o<n.length;o++){for(i=n[o],l=!1,a=0;a<t.frames.length;a++)if(!(i instanceof e.mixin.Definition)&&i===(t.frames[a].originalRuleset||t.frames[a])){l=!0;break}if(!l&&i.matchArgs(r,t)){if(!i.matchCondition||i.matchCondition(r,t))try{i instanceof e.mixin.Definition||(i=new 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e.Element(null,t,this.index,this.currentFileInfo)])],this.params=n,this.condition=r,this.variadic=s,this.arity=n.length,this.rules=i,this._lookups={},this.required=n.reduce(function(e,t){return!t.name||t.name&&!t.value?e+1:e},0),this.parent=e.Ruleset.prototype,this.frames=[]},e.mixin.Definition.prototype={type:"MixinDefinition",accept:function(e){this.params=e.visit(this.params),this.rules=e.visit(this.rules),this.condition=e.visit(this.condition)},variable:function(e){return this.parent.variable.call(this,e)},variables:function(){return this.parent.variables.call(this)},find:function(){return this.parent.find.apply(this,arguments)},rulesets:function(){return this.parent.rulesets.apply(this)},evalParams:function(t,n,i,r){var s,o,a,l,u,c,h,f,p=new e.Ruleset(null,[]),m=this.params.slice(0);if(n=new e.evalEnv(n,[p].concat(n.frames)),i)for(i=i.slice(0),a=0;a<i.length;a++)if(o=i[a],c=o&&o.name){for(h=!1,l=0;l<m.length;l++)if(!r[l]&&c===m[l].name){r[l]=o.value.eval(t),p.rules.unshift(new 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