lib/pry/exception_handler.rb
# frozen_string_literal: true
class Pry
# @api private
# @since v0.13.0
module ExceptionHandler
class << self
# Will only show the first line of the backtrace.
def handle_exception(output, exception, _pry_instance)
if exception.is_a?(UserError) && exception.is_a?(SyntaxError)
output.puts "SyntaxError: #{exception.message.sub(/.*syntax error, */m, '')}"
else
output.puts standard_error_text_for(exception)
end
end
private
def standard_error_text_for(exception)
text = exception_text(exception)
return text unless exception.respond_to?(:cause)
cause = exception.cause
while cause
text += cause_text(cause)
cause = cause.cause
end
text
end
def exception_text(exception)
if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('3.2')
"#{exception.class}: #{exception.message}\n" \
"from #{exception.backtrace.first}\n"
else
"#{exception.class}: #{exception.detailed_message}\n" \
"from #{exception.backtrace.first}\n"
end
end
def cause_text(cause)
"Caused by #{cause.class}: #{cause}\n" \
"from #{cause.backtrace.first}\n"
end
end
end
end