mirror of
https://github.com/less/less.js.git
synced 2026-02-03 11:35:08 -05:00
29 lines
661 B
JavaScript
29 lines
661 B
JavaScript
(function (tree) {
|
|
|
|
tree.Condition = function (op, l, r, i) {
|
|
this.op = op.trim();
|
|
this.lvalue = l;
|
|
this.rvalue = r;
|
|
this.index = i;
|
|
};
|
|
tree.Condition.prototype.eval = function (env) {
|
|
var a = this.lvalue.eval(env),
|
|
b = this.rvalue.eval(env);
|
|
|
|
var i = this.index;
|
|
|
|
if (a.compare) {
|
|
switch (a.compare(b)) {
|
|
case -1: return this.op === '<';
|
|
case 0: return this.op === '=';
|
|
case 1: return this.op === '>';
|
|
}
|
|
} else {
|
|
throw { type: "Type",
|
|
message: "Unable to perform comparison",
|
|
index: i };
|
|
}
|
|
};
|
|
|
|
})(require('../tree'));
|