50 lines
1.5 KiB
Ruby
50 lines
1.5 KiB
Ruby
module Pry::Command::Ls::JRubyHacks
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private
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# JRuby creates lots of aliases for methods imported from java in an attempt
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# to make life easier for ruby programmers. (e.g. getFooBar becomes
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# get_foo_bar and foo_bar, and maybe foo_bar? if it returns a Boolean). The
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# full transformations are in the assignAliases method of:
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# https://github.com/jruby/jruby/blob/master/src/org/jruby/javasupport/JavaClass.java
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#
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# This has the unfortunate side-effect of making the output of ls even more
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# incredibly verbose than it normally would be for these objects; and so we
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# filter out all but the nicest of these aliases here.
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#
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# TODO: This is a little bit vague, better heuristics could be used.
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# JRuby also has a lot of scala-specific logic, which we don't copy.
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def trim_jruby_aliases(methods)
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grouped = methods.group_by do |m|
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m.name.sub(/\A(is|get|set)(?=[A-Z_])/, '').gsub(/[_?=]/, '').downcase
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end
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grouped.map do |key, values|
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values = values.sort_by do |m|
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rubbishness(m.name)
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end
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found = []
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values.select do |x|
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(!found.any? { |y| x == y }) && found << x
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end
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end.flatten(1)
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end
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# When removing jruby aliases, we want to keep the alias that is
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# "least rubbish" according to this metric.
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def rubbishness(name)
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name.each_char.map { |x|
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case x
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when /[A-Z]/
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1
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when '?', '=', '!'
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-2
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else
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0
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end
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}.inject(&:+) + (name.size / 100.0)
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end
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end
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