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Mini Shell
#
# irb/inspector.rb - inspect methods
# $Release Version: 0.9.6$
# $Revision: 1.19 $
# $Date: 2002/06/11 07:51:31 $
# by Keiju ISHITSUKA(keiju@ruby-lang.org)
#
# --
#
#
#
module IRB
def IRB::Inspector(inspect, init = nil)
Inspector.new(inspect, init)
end
class Inspector
def initialize(inspect_proc, init_proc = nil)
@init = init_proc
@inspect = inspect_proc
end
def init
@init.call if @init
end
def inspect_value(v)
@inspect.call(v)
end
end
INSPECTORS = {}
def INSPECTORS.keys_with_inspector(inspector)
select{|k,v| v == inspector}.collect{|k, v| k}
end
# ex)
# INSPECTORS.def_inspector(key, init_p=nil){|v| v.inspect}
# INSPECTORS.def_inspector([key1,..], init_p=nil){|v| v.inspect}
# INSPECTORS.def_inspector(key, inspector)
# INSPECTORS.def_inspector([key1,...], inspector)
def INSPECTORS.def_inspector(key, arg=nil, &block)
# if !block_given?
# case arg
# when nil, Proc
# inspector = IRB::Inspector(init_p)
# when Inspector
# inspector = init_p
# else
# IRB.Raise IllegalParameter, init_p
# end
# init_p = nil
# else
# inspector = IRB::Inspector(block, init_p)
# end
if block_given?
inspector = IRB::Inspector(block, arg)
else
inspector = arg
end
case key
when Array
for k in key
def_inspector(k, inspector)
end
when Symbol
self[key] = inspector
self[key.to_s] = inspector
when String
self[key] = inspector
self[key.intern] = inspector
else
self[key] = inspector
end
end
INSPECTORS.def_inspector([false, :to_s, :raw]){|v| v.to_s}
INSPECTORS.def_inspector([true, :p, :inspect]){|v|
begin
v.inspect
rescue NoMethodError
puts "(Object doesn't support #inspect)"
end
}
INSPECTORS.def_inspector([:pp, :pretty_inspect], proc{require "pp"}){|v| v.pretty_inspect.chomp}
INSPECTORS.def_inspector([:yaml, :YAML], proc{require "yaml"}){|v|
begin
YAML.dump(v)
rescue
puts "(can't dump yaml. use inspect)"
v.inspect
end
}
INSPECTORS.def_inspector([:marshal, :Marshal, :MARSHAL, Marshal]){|v|
Marshal.dump(v)
}
end
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