40 lines
1.0 KiB
Ruby
40 lines
1.0 KiB
Ruby
module Sass
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module Script
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# A SassScript parse node representing a variable.
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class Variable < Node
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# The name of the variable.
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#
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# @return [String]
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attr_reader :name
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# @param name [String] See \{#name}
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def initialize(name)
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@name = name
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end
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# @return [String] A string representation of the variable
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def inspect
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"!#{name}"
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end
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# Evaluates the variable.
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#
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# @param environment [Sass::Environment] The environment in which to evaluate the SassScript
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# @return [Literal] The SassScript object that is the value of the variable
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# @raise [Sass::SyntaxError] if the variable is undefined
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def perform(environment)
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(val = environment.var(name)) && (return val)
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raise SyntaxError.new("Undefined variable: \"!#{name}\".")
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end
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# Returns an empty array.
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#
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# @return [Array<Node>] empty
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# @see Node#children
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def children
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[]
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end
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end
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end
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end
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