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# e2mmap.rb - for ruby 1.1
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# $Release Version: 2.0$
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# $Date: 1999/02/17 12:33:17 $
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# extend Exception2MessageMapper
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# def_e2message ExistingExceptionClass, "message..."
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# def_exception :NewExceptionClass, "message..."[, superclass]
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# extend Exception2MessageMapper
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# def_e2meggage ExistingExceptionClass, "message..."
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# def_exception :NewExceptionClass, "message..."[, superclass]
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# extend Exception2MessageMapper
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# def_e2message ExistingExceptionClass, "message..."
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# def_exception :NewExceptionClass, "message..."[, superclass]
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# extend Exception2MessageMapper
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# Foo.Fail NewExceptionClass, arg...
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# Foo.Fail ExistingExceptionClass, arg...
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fail "Use Ruby 1.1" if VERSION < "1.1"
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module Exception2MessageMapper
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@RCS_ID='-$Id: e2mmap.rb,v 1.10 1999/02/17 12:33:17 keiju Exp keiju $-'
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E2MM = Exception2MessageMapper
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def E2MM.extend_object(cl)
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cl.bind(self) unless cl == E2MM
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# backward compatibility
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def Raise(err = nil, *rest)
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Exception2MessageMapper.Raise(self.class, err, *rest)
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def self.included(mod)
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mod.extend Exception2MessageMapper
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# rest: message arguments
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def Raise(err = nil, *rest)
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E2MM.Raise(self, err, *rest)
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# backward compatibility
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def fail(err = nil, *rest)
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E2MM.Fail(self, err, *rest)
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rescue E2MM::ErrNotRegisteredException
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# def_e2message(c, m)
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# define exception c with message m.
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def def_e2message(c, m)
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E2MM.def_e2message(self, c, m)
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# def_exception(n, m, s)
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# s: superclass(default: StandardError)
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# define exception named ``c'' with message m.
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def def_exception(n, m, s = StandardError)
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E2MM.def_exception(self, n, m, s)
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# Private definitions.
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# {[class, exp] => message, ...}
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# E2MM.def_exception(k, e, m)
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# k: class to define exception under.
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# define exception c with message m.
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def E2MM.def_e2message(k, c, m)
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E2MM.instance_eval{@MessageMap[[k, c]] = m}
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# E2MM.def_exception(k, n, m, s)
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# k: class to define exception under.
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# s: superclass(default: StandardError)
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# define exception named ``c'' with message m.
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def E2MM.def_exception(k, n, m, s = StandardError)
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n = n.id2name if n.kind_of?(Fixnum)
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E2MM.instance_eval{@MessageMap[[k, e]] = m}
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# Fail(klass, err, *rest)
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# klass: class to define exception under.
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# rest: message arguments
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def E2MM.Raise(klass = E2MM, err = nil, *rest)
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if form = e2mm_message(klass, err)
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$! = err.new(sprintf(form, *rest))
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$@ = caller(1) if $@.nil?
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$@.shift if $@[0] =~ /^#{Regexp.quote(__FILE__)}:/
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E2MM.Fail E2MM, ErrNotRegisteredException, err.inspect
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def E2MM.e2mm_message(klass, exp)
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for c in klass.ancestors
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if mes = @MessageMap[[c,exp]]
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m = klass.instance_eval('"' + mes + '"')
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alias message e2mm_message
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E2MM.def_exception(E2MM,
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:ErrNotRegisteredException,
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"not registerd exception(%s)")