class RubyChecker::Interpreter
Interpreter
adds checking capabilities for interpreters.
Public Class Methods
new(required)
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# File lib/ruby_checker/interpreter.rb, line 31 def initialize(required) @required = required end
Public Instance Methods
check!()
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check! performs checks for interpreter, ruby engines, etc. It might raise the following exceptions:
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NotSupportedError: if the current interpreter does not match with the expectation.
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RubyEngineNotAvailableError: if the RUBY_ENGINE constant has not been defined.
# File lib/ruby_checker/interpreter.rb, line 42 def check! return true if @required == ANY raise NotSupportedError, stringify(@required) if current_interpreter != @required true end
current_interpreter()
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Returns the constant representing the current ruby interpreter. It will return nil if the interpreter is not supported by this gem and it will raise a RubyEngineNotAvailableError
if the RUBY_ENGINE constant has not been defined.
# File lib/ruby_checker/interpreter.rb, line 54 def current_interpreter raise RubyEngineNotAvailableError if ruby_engine.nil? case ruby_engine when "ruby" MRI when "jruby" JRUBY when "mruby" MRUBY when "truffleruby" TRUFFLE end end
ruby_engine()
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ruby_engine
returns the value for RUBY_ENGINE, or nil if this constant is not defined.
This method lives mainly so it can be stubbed in tests.
# File lib/ruby_checker/interpreter.rb, line 73 def ruby_engine defined?(RUBY_ENGINE) ? RUBY_ENGINE : nil end
stringify(interpreter)
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Returns a string representation for the given interpreter.
# File lib/ruby_checker/interpreter.rb, line 78 def stringify(interpreter) return "unknown interpreter" unless interpreter.is_a?(Integer) %w[MRI JRuby mruby truffleruby][interpreter - 1] || "unknown interpreter" end