50 lines
1.4 KiB
Ruby
50 lines
1.4 KiB
Ruby
module Liquid
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# Holds variables. Variables are only loaded "just in time"
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# and are not evaluated as part of the render stage
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#
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# {{ monkey }}
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# {{ user.name }}
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#
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# Variables can be combined with filters:
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#
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# {{ user | link }}
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#
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class Variable
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attr_accessor :filters, :name
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def initialize(markup)
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@markup = markup
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@name = nil
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@filters = []
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if match = markup.match(/\s*(#{QuotedFragment})/)
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@name = match[1]
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if markup.match(/#{FilterSeparator}\s*(.*)/)
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filters = Regexp.last_match(1).split(/#{FilterSeparator}/)
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filters.each do |f|
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if matches = f.match(/\s*(\w+)/)
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filtername = matches[1]
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filterargs = f.scan(/(?:#{FilterArgumentSeparator}|#{ArgumentSeparator})\s*(#{QuotedFragment})/).flatten
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@filters << [filtername.to_sym, filterargs]
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end
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end
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end
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end
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end
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def render(context)
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return '' if @name.nil?
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@filters.inject(context[@name]) do |output, filter|
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filterargs = filter[1].to_a.collect do |a|
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context[a]
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end
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begin
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output = context.invoke(filter[0], output, *filterargs)
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rescue FilterNotFound
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raise FilterNotFound, "Error - filter '#{filter[0]}' in '#{@markup.strip}' could not be found."
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end
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end
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end
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end
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end
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