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require 'mspec/guards/guard'
class PlatformGuard < SpecGuard
def self.implementation?(*args)
args.any? do |name|
case name
when :rubinius
RUBY_NAME.start_with?('rbx')
when :ruby, :jruby, :truffleruby, :ironruby, :macruby, :maglev, :topaz, :opal
RUBY_NAME.start_with?(name.to_s)
else
raise "unknown implementation #{name}"
end
end
end
def self.standard?
implementation? :ruby
end
HOST_OS = begin
require 'rbconfig'
RbConfig::CONFIG['host_os'] || RUBY_PLATFORM
rescue LoadError
RUBY_PLATFORM
end.downcase
def self.os?(*oses)
oses.any? do |os|
raise ":java is not a valid OS" if os == :java
if os == :windows
HOST_OS =~ /(mswin|mingw)/
else
HOST_OS.include?(os.to_s)
end
end
end
def self.windows?
os?(:windows)
end
def self.wordsize?(size)
size == 8 * 1.size
end
def initialize(*args)
if args.last.is_a?(Hash)
@options, @platforms = args.last, args[0..-2]
else
@options, @platforms = {}, args
end
@parameters = args
end
def match?
match = @platforms.empty? ? true : PlatformGuard.os?(*@platforms)
@options.each do |key, value|
case key
when :os
match &&= PlatformGuard.os?(*value)
when :wordsize
match &&= PlatformGuard.wordsize? value
end
end
match
end
end
class Object
def platform_is(*args, &block)
PlatformGuard.new(*args).run_if(:platform_is, &block)
end
def platform_is_not(*args, &block)
PlatformGuard.new(*args).run_unless(:platform_is_not, &block)
end
end
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