org.lesscss.mojo.js.less.tree.variable.js Maven / Gradle / Ivy
(function (tree) {
tree.Variable = function (name, index, currentFileInfo) {
this.name = name;
this.index = index;
this.currentFileInfo = currentFileInfo;
};
tree.Variable.prototype = {
type: "Variable",
eval: function (env) {
var variable, v, name = this.name;
if (name.indexOf('@@') === 0) {
name = '@' + new(tree.Variable)(name.slice(1)).eval(env).value;
}
if (this.evaluating) {
throw { type: 'Name',
message: "Recursive variable definition for " + name,
filename: this.currentFileInfo.file,
index: this.index };
}
this.evaluating = true;
if (variable = tree.find(env.frames, function (frame) {
if (v = frame.variable(name)) {
return v.value.eval(env);
}
})) {
this.evaluating = false;
return variable;
}
else {
throw { type: 'Name',
message: "variable " + name + " is undefined",
filename: this.currentFileInfo.filename,
index: this.index };
}
}
};
})(require('../tree'));