зеркало из https://github.com/github/ruby.git
Retire to maintain e2mmap on ruby core
This commit is contained in:
Hiroshi SHIBATA
SHIBATA Hiroshi
Родитель
04511b994e
Коммит
f47f2076fe
177
lib/e2mmap.rb
177
lib/e2mmap.rb
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# frozen_string_literal: true
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#
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#--
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# e2mmap.rb - for Ruby 1.1
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# $Release Version: 2.0$
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# $Revision: 1.10 $
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# by Keiju ISHITSUKA
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#
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#++
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#
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# Helper module for easily defining exceptions with predefined messages.
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#
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# == Usage
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#
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# 1.
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# class Foo
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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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# ...
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# end
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#
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# 2.
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# module Error
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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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# ...
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# end
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# class Foo
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# include Error
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# ...
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# end
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#
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# foo = Foo.new
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# foo.Fail ....
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#
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# 3.
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# module Error
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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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# ...
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# end
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# class Foo
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# extend Exception2MessageMapper
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# include Error
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# ...
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# end
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#
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# Foo.Fail NewExceptionClass, arg...
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# Foo.Fail ExistingExceptionClass, arg...
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#
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#
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module Exception2MessageMapper
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E2MM = Exception2MessageMapper # :nodoc:
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def E2MM.extend_object(cl)
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super
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cl.bind(self) unless cl < E2MM
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end
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def bind(cl)
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self.module_eval "#{<<-"begin;"}\n#{<<-"end;"}", __FILE__, __LINE__+1
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begin;
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def Raise(err = nil, *rest)
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Exception2MessageMapper.Raise(self.class, err, *rest)
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end
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alias Fail Raise
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class << self
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undef included
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end
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def self.included(mod)
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mod.extend Exception2MessageMapper
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end
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end;
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end
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# Fail(err, *rest)
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# err: exception
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# rest: message arguments
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#
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def Raise(err = nil, *rest)
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E2MM.Raise(self, err, *rest)
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end
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alias Fail Raise
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alias fail Raise
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# def_e2message(c, m)
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# c: exception
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# m: message_form
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# define exception c with message m.
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#
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def def_e2message(c, m)
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E2MM.def_e2message(self, c, m)
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end
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# def_exception(n, m, s)
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# n: exception_name
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# m: message_form
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# s: superclass(default: StandardError)
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# define exception named ``c'' with message m.
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#
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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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end
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#
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# Private definitions.
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#
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# {[class, exp] => message, ...}
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@MessageMap = {}
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# E2MM.def_e2message(k, e, m)
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# k: class to define exception under.
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# e: exception
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# m: message_form
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# define exception c with message m.
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#
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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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c
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end
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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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# n: exception_name
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# m: message_form
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# s: superclass(default: StandardError)
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# define exception named ``c'' with message m.
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#
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def E2MM.def_exception(k, n, m, s = StandardError)
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e = Class.new(s)
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E2MM.instance_eval{@MessageMap[[k, e]] = m}
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k.module_eval {remove_const(n)} if k.const_defined?(n, false)
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k.const_set(n, e)
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end
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# Fail(klass, err, *rest)
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# klass: class to define exception under.
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# err: exception
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# rest: message arguments
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#
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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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b = $@.nil? ? caller(1) : $@
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b.shift if b[0] =~ /^#{Regexp.quote(__FILE__)}:/
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raise err, sprintf(form, *rest), b
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else
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E2MM.Fail E2MM, ErrNotRegisteredException, err.inspect
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end
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end
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class << E2MM
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alias Fail Raise
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end
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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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return m
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end
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end
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nil
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end
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class << self
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alias message e2mm_message
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end
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E2MM.def_exception(E2MM,
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:ErrNotRegisteredException,
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"not registered exception(%s)")
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end
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@ -1,26 +0,0 @@
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begin
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require_relative "lib/e2mmap/version"
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rescue LoadError
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# for Ruby core repository
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require_relative "version"
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end
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Gem::Specification.new do |spec|
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spec.name = "e2mmap"
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spec.version = Exception2MessageMapper::VERSION
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spec.authors = ["Keiju ISHITSUKA"]
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spec.email = ["keiju@ruby-lang.org"]
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spec.summary = %q{Module for defining custom exceptions with specific messages.}
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spec.description = %q{Module for defining custom exceptions with specific messages.}
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spec.homepage = "https://github.com/ruby/e2mmap"
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spec.license = "BSD-2-Clause"
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spec.files = [".gitignore", "Gemfile", "LICENSE.txt", "README.md", "Rakefile", "bin/console", "bin/setup", "e2mmap.gemspec", "lib/e2mmap.rb", "lib/e2mmap/version.rb"]
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spec.bindir = "exe"
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spec.executables = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
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spec.require_paths = ["lib"]
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spec.add_development_dependency "bundler", "~> 1.16"
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spec.add_development_dependency "rake", "~> 10.0"
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end
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@ -1,3 +0,0 @@
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module Exception2MessageMapper
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VERSION = "0.1.0"
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end
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