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# frozen_string_literal: true
module ParserSupport
module_function
# Determines whether or not Prism is being used in the current process. This
# would have been determined by `--parser=prism` on either the command line or
# from within various environment variables.
def prism_enabled?
RubyVM::InstructionSequence.compile("").to_a[4][:parser] == :prism
end
# Determines whether or not Prism would be used by a subprocess. This is
# necessary because some tests run in subprocesses, and we need to know if we
# expect Prism to be used by those tests. This happens if Prism is configured
# as the default parser.
def prism_enabled_in_subprocess?
EnvUtil.invoke_ruby(["-v"], "", true, false)[0].include?("+PRISM")
end
end
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