33 lines
703 B
Ruby
33 lines
703 B
Ruby
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# Names a match to influence tree construction.
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#
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# Example:
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#
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# str('foo') # will return 'foo',
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# str('foo').as(:foo) # will return :foo => 'foo'
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#
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class Parslet::Atoms::Named < Parslet::Atoms::Base
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attr_reader :parslet, :name
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def initialize(parslet, name)
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super()
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@parslet, @name = parslet, name
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end
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def apply(source, context, consume_all)
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success, value = result = parslet.apply(source, context, consume_all)
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return result unless success
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succ(
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produce_return_value(
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value))
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end
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def to_s_inner(prec)
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"#{name}:#{parslet.to_s(prec)}"
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end
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private
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def produce_return_value(val)
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{ name => flatten(val, true) }
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end
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end
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