19 lines
529 B
JavaScript
19 lines
529 B
JavaScript
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node.Expression = function Expression(value) { this.value = value };
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node.Expression.prototype.eval = function (env) {
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if (this.value.length > 1) {
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throw new(Error)("can't eval compound expression");
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} else {
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return this.value[0].eval(env);
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}
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};
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node.Expression.prototype.toCSS = function (env) {
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var evaled;
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evaled = this.value.map(function (e) {
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if (e.eval) {
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e = e.eval(env);
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}
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return e.toCSS ? e.toCSS(env) : e;
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});
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return evaled.join(' ');
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};
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