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tsnow/const_syntax.rb

Created September 6, 2012 22:09
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const_syntax.rb
1.9.3p253 :001 > require 'ripper'
=> true
1.9.3p253 :002 > class A
1.9.3p253 :003?> class B
1.9.3p253 :004?> end
1.9.3p253 :005?> def self.Fart
1.9.3p253 :006?> end
1.9.3p253 :007?> end
=> nil
1.9.3p253 :008 > Ripper.sexp('A.B')
=> [:program, [[:call, [:var_ref, [:@const, "A", [1, 0]]], :".", [:@const, "B", [1, 2]]]]]
1.9.3p253 :009 > Ripper.sexp('A::B')
=> [:program, [[:const_path_ref, [:var_ref, [:@const, "A", [1, 0]]], [:@const, "B", [1, 3]]]]]
1.9.3p253 :010 > Ripper.sexp('A::Fart')
=> [:program, [[:const_path_ref, [:var_ref, [:@const, "A", [1, 0]]], [:@const, "Fart", [1, 3]]]]]
1.9.3p253 :011 > Ripper.sexp('A::bart')
=> [:program, [[:call, [:var_ref, [:@const, "A", [1, 0]]], :"::", [:@ident, "bart", [1, 3]]]]]
1.9.3p253 :012 > A::Fart
NameError: uninitialized constant A::Fart
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