f2297e3472
"Many" library authors override Class or Modules #name not to return a String or nil. They are not aware these are integral APIs for reflection / tools. This change prints an ugly warning message in case the API was violated. Mutant used to crash often because of this LSP violation. This change should provide a generic workaround.
105 lines
2.1 KiB
Ruby
105 lines
2.1 KiB
Ruby
# encoding: utf-8
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module Mutant
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class Matcher
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# Matcher for specific namespace
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class Namespace < self
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include Concord::Public.new(:cache, :namespace)
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# Enumerate subjects
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#
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# @return [self]
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# if block given
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#
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# @return [Enumerator<Subject>]
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# otherwise
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#
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# @api private
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#
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def each(&block)
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return to_enum unless block_given?
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scopes.each do |scope|
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Scope.each(cache, scope, &block)
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end
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self
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end
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private
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# Return pattern
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#
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# @return [Regexp]
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#
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# @api private
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#
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def pattern
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/\A#{Regexp.escape(namespace.name)}(?:::)?/
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end
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memoize :pattern
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# Return scope enumerator
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#
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# @return [Enumerable<Object>]
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#
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# @api private
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#
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def scopes(&block)
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return to_enum(__method__) unless block_given?
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::ObjectSpace.each_object(Module).each do |scope|
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emit_scope(scope, &block)
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end
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end
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# Return scope name
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#
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# @param [Class,Module] scope
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#
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# @return [String]
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# if scope has a name and does not raise exceptions optaining it
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#
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# @return [nil]
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# otherwise
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#
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# @api private
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#
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def self.scope_name(scope)
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scope.name
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rescue => exception
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$stderr.puts <<-MESSAGE
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WARNING:
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While optaining #{scope.class}#name from: #{scope.inspect}
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It raised an error: #{exception.inspect} fix your lib!
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MESSAGE
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nil
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end
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# Yield scope if name matches pattern
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#
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# @param [Module,Class] scope
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#
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# @return [undefined]
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#
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# @api private
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#
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def emit_scope(scope)
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name = self.class.scope_name(scope)
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# FIXME: Fix nokogiri to return a string here
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unless name.nil? or name.kind_of?(String)
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$stderr.puts <<-MESSAGE
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WARNING:
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#{scope.class}#name did not return a string or nil.
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Fix your lib!
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MESSAGE
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end
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if pattern =~ name
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yield scope
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end
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end
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end # Namespace
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end # Matcher
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end # Mutant
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