a52e2615f2
* The SCOPE_PATERN constraints `namespace` to be characters that are valid literal static regexp. * Not test case can be created that forces Regexp.escape here.
90 lines
1.8 KiB
Ruby
90 lines
1.8 KiB
Ruby
module Mutant
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class Expression
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# Abstract base class for expressions matching namespaces
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class Namespace < self
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include AbstractType
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private
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# Return matched namespace
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#
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# @return [String]
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#
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# @api private
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#
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def namespace
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match[__method__]
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end
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# Recursive namespace expression
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class Recursive < self
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register(/\A(?<namespace>#{SCOPE_PATTERN})?\*\z/)
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# Initialize object
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#
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# @return [undefined]
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#
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# @api private
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def initialize(*)
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super
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@recursion_pattern = Regexp.union(
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/\A#{namespace}\z/,
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/\A#{namespace}::/,
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/\A#{namespace}[.#]/
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)
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end
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# Return matcher
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#
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# @param [Env] env
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#
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# @return [Matcher]
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#
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# @api private
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#
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def matcher(env)
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Matcher::Namespace.new(env, self)
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end
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# Return length of match
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#
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# @param [Expression] expression
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#
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# @return [Fixnum]
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#
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# @api private
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#
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def match_length(expression)
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if @recursion_pattern =~ expression.syntax
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namespace.length
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else
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0
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end
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end
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end # Recursive
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# Exact namespace expression
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class Exact < self
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register(/\A(?<namespace>#{SCOPE_PATTERN})\z/)
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MATCHER = Matcher::Scope
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# Return matcher
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#
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# @param [Cache] env
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#
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# @return [Matcher]
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#
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# @api private
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#
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def matcher(env)
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Matcher::Scope.new(env, Mutant.constant_lookup(namespace), self)
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end
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end # Exact
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end # Namespace
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end # Namespace
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end # Mutant
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