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require 'benchmark/ips'

require 'e2mmap'

# Raises an exception class Ruby already defines (TypeError).

# For an exception class defined in the file, see raise-custom-vs-e2mmap.rb.

class WithE2MM

extend Exception2MessageMapper

def_e2message TypeError, 'argument must be a %s'

def self.raise_ruby_defined

Raise TypeError, 'Hash'

end

end

class WithoutE2MM

def self.raise_ruby_defined

raise TypeError, 'argument must be a Hash'

end

end

def fast

begin

WithoutE2MM.raise_ruby_defined

rescue

'fast ruby'

end

end

def slow

begin

WithE2MM.raise_ruby_defined

rescue

'fast ruby'

end

end

Benchmark.ips do |x|

x.report('Ruby exception: Kernel#raise') { fast }

x.report('Ruby exception: E2MM#Raise') { slow }

x.compare!

end