org.lesscss.mojo.js.less.tree.expression.js Maven / Gradle / Ivy
(function (tree) {
tree.Expression = function (value) { this.value = value; };
tree.Expression.prototype = {
type: "Expression",
accept: function (visitor) {
this.value = visitor.visit(this.value);
},
eval: function (env) {
var returnValue,
inParenthesis = this.parens && !this.parensInOp,
doubleParen = false;
if (inParenthesis) {
env.inParenthesis();
}
if (this.value.length > 1) {
returnValue = new(tree.Expression)(this.value.map(function (e) {
return e.eval(env);
}));
} else if (this.value.length === 1) {
if (this.value[0].parens && !this.value[0].parensInOp) {
doubleParen = true;
}
returnValue = this.value[0].eval(env);
} else {
returnValue = this;
}
if (inParenthesis) {
env.outOfParenthesis();
}
if (this.parens && this.parensInOp && !(env.isMathOn()) && !doubleParen) {
returnValue = new(tree.Paren)(returnValue);
}
return returnValue;
},
genCSS: function (env, output) {
for(var i = 0; i < this.value.length; i++) {
this.value[i].genCSS(env, output);
if (i + 1 < this.value.length) {
output.add(" ");
}
}
},
toCSS: tree.toCSS,
throwAwayComments: function () {
this.value = this.value.filter(function(v) {
return !(v instanceof tree.Comment);
});
}
};
})(require('../tree'));