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require 'mspec/guards/guard'
class PlatformGuard < SpecGuard
def self.implementation?(*args)
args.any? do |name|
case name
when :rubinius
RUBY_ENGINE.start_with?('rbx')
else
RUBY_ENGINE.start_with?(name.to_s)
end
end
end
def self.standard?
implementation? :ruby
end
PLATFORM = if RUBY_ENGINE == "jruby"
require 'rbconfig'
"#{RbConfig::CONFIG['host_cpu']}-#{RbConfig::CONFIG['host_os']}"
else
RUBY_PLATFORM
end
def self.os?(*oses)
oses.any? do |os|
raise ":java is not a valid OS" if os == :java
case os
when :windows
PLATFORM =~ /(mswin|mingw)/
when :wsl
wsl?
else
PLATFORM.include?(os.to_s)
end
end
end
def self.windows?
os?(:windows)
end
def self.wsl?
if defined?(@wsl_p)
@wsl_p
else
@wsl_p = `uname -r`.match?(/microsoft/i)
end
end
WORD_SIZE = 1.size * 8
POINTER_SIZE = begin
require 'rbconfig/sizeof'
RbConfig::SIZEOF["void*"] * 8
rescue LoadError
WORD_SIZE
end
def self.wordsize?(size)
size == WORD_SIZE
end
def self.pointer_size?(size)
size == POINTER_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
when :pointer_size
match &&= PlatformGuard.pointer_size? value
end
end
match
end
end
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
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