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// Copyright (c) 2009-2011, Alexis Sellier
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d.features=this.features.eval(b),b.frames.unshift(this.ruleset),d.ruleset=this.ruleset.eval(b),b.frames.shift(),b.mediaBlocks[c]=d,b.mediaPath.pop(),b.mediaPath.length===0?d.evalTop(b):d.evalNested(b)},variable:function(b){return a.Ruleset.prototype.variable.call(this.ruleset,b)},find:function(){return a.Ruleset.prototype.find.apply(this.ruleset,arguments)},rulesets:function(){return a.Ruleset.prototype.rulesets.apply(this.ruleset)},evalTop:function(b){var c=this;if(b.mediaBlocks.length>1){var d=new a.Element("&",null,0),e=[new a.Selector([d])];c=new a.Ruleset(e,b.mediaBlocks),c.multiMedia=!0}return delete b.mediaBlocks,delete b.mediaPath,c},evalNested:function(b){var c,d,e=b.mediaPath.concat([this]);for(c=0;c<e.length;c++)d=e[c].features instanceof a.Value?e[c].features.value:e[c].features,e[c]=Array.isArray(d)?d:[d];return this.features=new a.Value(this.permute(e).map(function(b){b=b.map(function(b){return b.toCSS?b:new a.Anonymous(b)});for(c=b.length-1;c>0;c--)b.splice(c,0,new a.Anonymous("and"));return new a.Expression(b)})),new a.Ruleset([],[])},permute:function(a){if(a.length===0)return[];if(a.length===1)return a[0];var b=[],c=this.permute(a.slice(1));for(var d=0;d<c.length;d++)for(var e=0;e<a[0].length;e++)b.push([a[0][e]].concat(c[d]));return b}}}(c("../tree")),function(a){a.mixin={},a.mixin.Call=function(b,c,d,e,f){this.selector=new a.Selector(b),this.arguments=c,this.index=d,this.filename=e,this.important=f},a.mixin.Call.prototype={eval:function(a){var b,c,d=[],e=!1;for(var f=0;f0){c=this.arguments&&this.arguments.map(function(b){return b.eval(a)});for(var g=0;g<b.length;g++)if(b[g].match(c,a))try{Array.prototype.push.apply(d,b[g].eval(a,this.arguments,this.important).rules),e=!0}catch(h){throw{message:h.message,index:this.index,filename:this.filename,stack:h.stack}}if(e)return d;throw{type:"Runtime",message:"No matching definition was found for `"+this.selector.toCSS().trim()+"("+this.arguments.map(function(a){return a.toCSS()}).join(", ")+")`",index:this.index,filename:this.filename}}throw{type:"Name",message:this.selector.toCSS().trim()+" is undefined",index:this.index,filename:this.filename}}},a.mixin.Definition=function(b,c,d,e,f){this.name=b,this.selectors=[new a.Selector([new a.Element(null,b)])],this.params=c,this.condition=e,this.variadic=f,this.arity=c.length,this.rules=d,this._lookups={},this.required=c.reduce(function(a,b){return!b.name||b.name&&!b.value?a+1:a},0),this.parent=a.Ruleset.prototype,this.frames=[]},a.mixin.Definition.prototype={toCSS:function(){return""},variable:function(a){return this.parent.variable.call(this,a)},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(b,c){var d=new a.Ruleset(null,[]),e;for(var f=0,g,h;f<this.params.length;f++)if(h=this.params[f].name)if(this.params[f].variadic&&c){e=[];for(var i=f;i<c.length;i++)e.push(c[i].eval(b));d.rules.unshift(new a.Rule(h,(new a.Expression(e)).eval(b)))}else if(g=c&&c[f]||this.params[f].value)d.rules.unshift(new a.Rule(h,g.eval(b)));else throw{type:"Runtime",message:"wrong number of arguments for "+this.name+" ("+c.length+" for "+this.arity+")"};return d},eval:function(b,c,d){var e=this.evalParams(b,c),f,g=[],h,i;for(var j=0;j<Math.max(this.params.length,c&&c.length);j++)g.push(c[j]||this.params[j].value);return e.rules.unshift(new a.Rule("@arguments",(new a.Expression(g)).eval(b))),h=d?this.rules.map(function(b){return new a.Rule(b.name,b.value,"!important",b.index)}):this.rules.slice(0),(new a.Ruleset(null,h)).eval({frames:[this,e].concat(this.frames,b.frames)})},match:function(a,b){var c=a&&a.length||0,d,e;if(!this.variadic){if(c<this.required)return!1;if(c>this.params.length)return!1;if(this.required>0&&c>this.params.length)return!1}if(this.condition&&!this.condition.eval({frames:[this.evalParams(b,a)].concat(b.frames)}))return!1;d=Math.min(c,this.arity);for(var f=0;f<d;f++)if(!this.params[f].name&&a[f].eval(b).toCSS()!=this.params[f].value.eval(b).toCSS())return!1;return!0}}}(c("../tree")),function(a){a.Operation=function(a,b){this.op=a.trim(),this.operands=b},a.Operation.prototype.eval=function(b){var c=this.operands[0].eval(b),d=this.operands[1].eval(b),e;if(c instanceof a.Dimension&&d instanceof a.Color)if(this.op==="*"||this.op==="+")e=d,d=c,c=e;else throw{name:"OperationError",message:"Can't substract or divide a color from a number"};return c.operate(this.op,d)},a.operate=function(a,b,c){switch(a){case"+":return b+c;case"-":return b-c;case"*":return b*c;case"/":return b/c}}}(c("../tree")),function(a){a.Paren=function(a){this.value=a},a.Paren.prototype={toCSS:function(a){return"("+this.value.toCSS(a)+")"},eval:function(b){return new a.Paren(this.value.eval(b))}}}(c("../tree")),function(a){a.Quoted=function(a,b,c,d){this.escaped=c,this.value=b||"",this.quote=a.charAt(0),this.index=d},a.Quoted.prototype={toCSS:function(){return this.escaped?this.value:this.quote+this.value+this.quote},eval:function(b){var c=this,d=this.value.replace(/`([^`]+)`/g,function(d,e){return(new a.JavaScript(e,c.index,!0)).eval(b).value}).replace(/@\{([\w-]+)\}/g,function(d,e){var f=(new a.Variable("@"+e,c.index)).eval(b);return"value"in f?f.value:f.toCSS()});return new a.Quoted(this.quote+d+this.quote,d,this.escaped,this.index)}}}(c("../tree")),function(a){a.Rule=function(b,c,d,e,f){this.name=b,this.value=c instanceof a.Value?c:new a.Value([c]),this.important=d?" "+d.trim():"",this.index=e,this.inline=f||!1,b.charAt(0)==="@"?this.variable=!0:this.variable=!1},a.Rule.prototype.toCSS=function(a){return this.variable?"":this.name+(a.compress?":":": ")+this.value.toCSS(a)+this.important+(this.inline?"":";")},a.Rule.prototype.eval=function(b){return new a.Rule(this.name,this.value.eval(b),this.important,this.index,this.inline)},a.Shorthand=function(a,b){this.a=a,this.b=b},a.Shorthand.prototype={toCSS:function(a){return this.a.toCSS(a)+"/"+this.b.toCSS(a)},eval:function(){return this}}}(c("../tree")),function(a){a.Ruleset=function(a,b,c){this.selectors=a,this.rules=b,this._lookups={},this.strictImports=c},a.Ruleset.prototype={eval:function(b){var c=this.selectors&&this.selectors.map(function(a){return a.eval(b)}),d=new a.Ruleset(c,this.rules.slice(0),this.strictImports);d.root=this.root,d.allowImports=this.allowImports,b.frames.unshift(d);if(d.root||d.allowImports||!d.strictImports)for(var e=0;e<d.rules.length;e++)d.rules[e]instanceof a.Import&&Array.prototype.splice.apply(d.rules,[e,1].concat(d.rules[e].eval(b)));for(var e=0;e<d.rules.length;e++)d.rules[e]instanceof a.mixin.Definition&&(d.rules[e].frames=b.frames.slice(0));for(var e=0;e<d.rules.length;e++)d.rules[e]instanceof a.mixin.Call&&Array.prototype.splice.apply(d.rules,[e,1].concat(d.rules[e].eval(b)));for(var e=0,f;e<d.rules.length;e++)f=d.rules[e],f instanceof a.mixin.Definition||(d.rules[e]=f.eval?f.eval(b):f);return b.frames.shift(),d},match:function(a){return!a||a.length===0},variables:function(){return this._variables?this._variables:this._variables=this.rules.reduce(function(b,c){return c instanceof a.Rule&&c.variable===!0&&(b[c.name]=c),b},{})},variable:function(a){return this.variables()[a]},rulesets:function(){return this._rulesets?this._rulesets:this._rulesets=this.rules.filter(function(b){return b instanceof a.Ruleset||b instanceof a.mixin.Definition})},find:function(b,c){c=c||this;var d=[],e,f,g=b.toCSS();return g in this._lookups?this._lookups[g]:(this.rulesets().forEach(function(e){if(e!==c)for(var g=0;g<e.selectors.length;g++)if(f=b.match(e.selectors[g])){b.elements.length>e.selectors[g].elements.length?Array.prototype.push.apply(d,e.find(new a.Selector(b.elements.slice(1)),c)):d.push(e);break}}),this._lookups[g]=d)},toCSS:function(b,c){var d=[],e=[],f=[],g=[],h,i;this.root||(b.length===0?g=this.selectors.map(function(a){return[a]}):this.joinSelectors(g,b,this.selectors));for(var j=0;j<this.rules.length;j++)i=this.rules[j],i.rules||i instanceof a.Directive||i instanceof a.Media?f.push(i.toCSS(g,c)):i instanceof a.Comment?i.silent||(this.root?f.push(i.toCSS(c)):e.push(i.toCSS(c))):i.toCSS&&!i.variable?e.push(i.toCSS(c)):i.value&&!i.variable&&e.push(i.value.toString());return f=f.join(""),this.root?d.push(e.join(c.compress?"":"\n")):e.length>0&&(h=g.map(function(a){return a.map(function(a){return a.toCSS(c)}).join("").trim()}).join(c.compress?",":",\n"),d.push(h,(c.compress?"{":" {\n  ")+e.join(c.compress?"":"\n  ")+(c.compress?"}":"\n}\n"))),d.push(f),d.join("")+(c.compress?"\n":"")},joinSelectors:function(a,b,c){for(var d=0;d<c.length;d++)this.joinSelector(a,b,c[d])},joinSelector:function(b,c,d){var e=[],f=[],g=[],h=[],i=!1,j;for(var k=0;k<d.elements.length;k++)j=d.elements[k],j.combinator.value.charAt(0)==="&"&&(i=!0),i?h.push(j):g.push(j);i||(h=g,g=[]),g.length>0&&e.push(new a.Selector(g)),h.length>0&&f.push(new a.Selector(h));for(var l=0;l<c.length;l++)b.push(e.concat(c[l]).concat(f))}}}(c("../tree")),function(a){a.Selector=function(a){this.elements=a,this.elements[0].combinator.value===""&&(this.elements[0].combinator.value=" ")},a.Selector.prototype.match=function(a){var b=this.elements.length,c=a.elements.length,d=Math.min(b,c);if(b<c)return!1;for(var e=0;e<d;e++)if(this.elements[e].value!==a.elements[e].value)return!1;return!0},a.Selector.prototype.eval=function(b){return new a.Selector(this.elements.map(function(a){return a.eval(b)}))},a.Selector.prototype.toCSS=function(a){return this._css?this._css:this._css=this.elements.map(function(b){return typeof b=="string"?" "+b.trim():b.toCSS(a)}).join("")}}(c("../tree")),function(b){b.URL=function(b,c){b.data?this.attrs=b:(typeof a!="undefined"&&!/^(?:https?:\/\/|file:\/\/|data:|\/)/.test(b.value)&&c.length>0&&(b.value=c[0]+(b.value.charAt(0)==="/"?b.value.slice(1):b.value)),this.value=b,this.paths=c)},b.URL.prototype={toCSS:function(){return"url("+(this.attrs?"data:"+this.attrs.mime+this.attrs.charset+this.attrs.base64+this.attrs.data:this.value.toCSS())+")"},eval:function(a){return this.attrs?this:new b.URL(this.value.eval(a),this.paths)}}}(c("../tree")),function(a){a.Value=function(a){this.value=a,this.is="value"},a.Value.prototype={eval:function(b){return this.value.length===1?this.value[0].eval(b):new a.Value(this.value.map(function(a){return a.eval(b)}))},toCSS:function(a){return this.value.map(function(b){return b.toCSS(a)}).join(a.compress?",":", ")}}}(c("../tree")),function(a){a.Variable=function(a,b,c){this.name=a,this.index=b,this.file=c},a.Variable.prototype={eval:function(b){var c,d,e=this.name;e.indexOf("@@")==0&&(e="@"+(new a.Variable(e.slice(1))).eval(b).value);if(c=a.find(b.frames,function(a){if(d=a.variable(e))return d.value.eval(b)}))return c;throw{type:"Name",message:"variable "+e+" is undefined",filename:this.file,index:this.index}}}}(c("../tree")),function(a){a.find=function(a,b){for(var c=0,d;c1?"["+a.value.map(function(a){return a.toCSS(!1)}).join(", ")+"]":a.toCSS(!1)}}(c("./tree"));var f=location.protocol==="file:"||location.protocol==="chrome:"||location.protocol==="chrome-extension:"||location.protocol==="resource:";d.env=d.env||(location.hostname=="127.0.0.1"||location.hostname=="0.0.0.0"||location.hostname=="localhost"||location.port.length>0||f?"development":"production"),d.async=!1,d.poll=d.poll||(f?1e3:1500),d.watch=function(){return this.watchMode=!0},d.unwatch=function(){return this.watchMode=!1},d.env==="development"?(d.optimization=0,/!watch/.test(location.hash)&&d.watch(),d.watchTimer=setInterval(function(){d.watchMode&&m(function(a,b,c,d,e){b&&p(b.toCSS(),d,e.lastModified)})},d.poll)):d.optimization=3;var g;try{g=typeof a.localStorage=="undefined"?null:a.localStorage}catch(h){g=null}var i=document.getElementsByTagName("link"),j=/^text\/(x-)?less$/;d.sheets=[];for(var k=0;k<i.length;k++)(i[k].rel==="stylesheet/less"||i[k].rel.match(/stylesheet/)&&i[k].type.match(j))&&d.sheets.push(i[k]);d.refresh=function(a){var b,c;b=c=new Date,m(function(a,d,e,f,g){g.local?t("loading "+f.href+" from cache."):(t("parsed "+f.href+" successfully."),p(d.toCSS(),f,g.lastModified)),t("css for "+f.href+" generated in "+(new Date-c)+"ms"),g.remaining===0&&t("css generated in "+(new Date-b)+"ms"),c=new Date},a),l()},d.refreshStyles=l,d.refresh(d.env==="development")})(window);


// Selector context is currently unsupported. This unit test should fail once we implement selectors.

it("should return empty context for unsupported context", function () {

keep keep keep keep replace keep keep keep

/* Typography.less
 * Headings, body text, lists, code, and more for a versatile and durable typography system
 * ---------------------------------------------------------------------------------------- */

// BODY TEXT
// ---------

p {
  #font > .shorthand(normal,@basefont,@baseline);
  margin-bottom: @baseline / 2;
  small {
    font-size: @basefont - 2;
    color: @grayLight;
  }
}

// HEADINGS
// --------

h1, h2, h3, h4, h5, h6 {
  font-weight: bold;
  color: @grayDark;
  small {
    color: @grayLight;
  }
}
h1 {
  margin-bottom: @baseline;
  font-size: 30px;
  line-height: @baseline * 2;
  small {
    font-size: 18px;
  }
}
h2 {
  font-size: 24px;
  line-height: @baseline * 2;
  small {
    font-size: 14px;
  }
}
h3, h4, h5, h6 {
  line-height: @baseline * 2;
}
h3 {
  font-size: 18px;
  small {
    font-size: 14px;
  }
}
h4 {
  font-size: 16px;
  small {
    font-size: 12px;
  }
}
h5 {
  font-size: 14px;
}
h6 {
  font-size: 13px;
  color: @grayLight;
  text-transform: uppercase;
}

// COLORS
// ------

// Unordered and Ordered lists
ul, ol {
  margin: 0 0 @baseline 25px;
}
ul ul,
ul ol,
ol ol,
ol ul {
  margin-bottom: 0;
}
ul {
  list-style: disc;
}
ol {
  list-style: decimal;
}
li {
  line-height: @baseline;
  color: @gray;
}
ul.unstyled {
  list-style: none;
  margin-left: 0;
}

// Description Lists
dl {
  margin-bottom: @baseline;
  dt, dd {
    line-height: @baseline;
  }
  dt {
    font-weight: bold;
  }
  dd {
    margin-left: @baseline / 2;
  }
}

// MISC
// ----

// Horizontal rules
hr {
  margin: 20px 0 19px;
  border: 0;
  border-bottom: 1px solid #eee;
}

// Emphasis
strong {
  font-style: inherit;
  font-weight: bold;
}
em {
  font-style: italic;
  font-weight: inherit;
  line-height: inherit;
}
.muted {
  color: @grayLight;
}

// Blockquotes
blockquote {
  margin-bottom: @baseline;
  border-left: 5px solid #eee;
  padding-left: 15px;
  p {
    #font > .shorthand(300,14px,@baseline);
    margin-bottom: 0;
  }
  small {
    display: block;
    #font > .shorthand(300,12px,@baseline);
    color: @grayLight;
    &:before {
      content: '\2014 \00A0';
    }
  }
}

// Addresses
address {
  display: block;
  line-height: @baseline;
  margin-bottom: @baseline;
}

// Inline and block code styles
code, pre {
  padding: 0 3px 2px;
  font-family: Monaco, Andale Mono, Courier New, monospace;
  font-size: 12px;
  .border-radius(3px);
}
code {
  background-color: lighten(@orange, 40%);
  color: rgba(0,0,0,.75);
  padding: 1px 3px;
}
pre {
  background-color: #f5f5f5;
  display: block;
  padding: (@baseline - 1) / 2;
  margin: 0 0 @baseline;
  line-height: @baseline;
  font-size: 12px;
  border: 1px solid #ccc;
  border: 1px solid rgba(0,0,0,.15);
  .border-radius(3px);
  white-space: pre;
  white-space: pre-wrap;
  word-wrap: break-word;

}