mirror of
https://github.com/pry/pry.git
synced 2022-11-09 12:35:05 -05:00
8e553e2144
This finishes up Robert Gleeson's refactoring. A sole file for RescuableException doesn't make much sense, since we have a few more exceptions left behind.
77 lines
2.5 KiB
Ruby
77 lines
2.5 KiB
Ruby
class Pry
|
|
|
|
# As a REPL, we often want to catch any unexpected exceptions that may have
|
|
# been raised; however we don't want to go overboard and prevent the user
|
|
# from exiting Pry when they want to.
|
|
module RescuableException
|
|
def self.===(exception)
|
|
case exception
|
|
# Catch when the user hits ^C (Interrupt < SignalException), and assume
|
|
# that they just wanted to stop the in-progress command (just like bash
|
|
# etc.)
|
|
when Interrupt
|
|
true
|
|
# Don't catch signals (particularly not SIGTERM) as these are unlikely
|
|
# to be intended for pry itself. We should also make sure that
|
|
# Kernel#exit works.
|
|
when *Pry.config.exception_whitelist
|
|
false
|
|
# All other exceptions will be caught.
|
|
else
|
|
true
|
|
end
|
|
end
|
|
end
|
|
|
|
# Catches SecurityErrors if $SAFE is set
|
|
module Pry::TooSafeException
|
|
def self.===(exception)
|
|
$SAFE > 0 && SecurityError === exception
|
|
end
|
|
end
|
|
|
|
# An Exception Tag (cf. Exceptional Ruby) that instructs Pry to show the error
|
|
# in a more user-friendly manner. This should be used when the exception
|
|
# happens within Pry itself as a direct consequence of the user typing
|
|
# something wrong.
|
|
#
|
|
# This allows us to distinguish between the user typing:
|
|
#
|
|
# pry(main)> def )
|
|
# SyntaxError: unexpected )
|
|
#
|
|
# pry(main)> method_that_evals("def )")
|
|
# SyntaxError: (eval):1: syntax error, unexpected ')'
|
|
# from ./a.rb:2 in `eval'
|
|
module UserError; end
|
|
|
|
# When we try to get a binding for an object, we try to define a method on
|
|
# that Object's singleton class. This doesn't work for "frozen" Object's, and
|
|
# the exception is just a vanilla RuntimeError.
|
|
module FrozenObjectException
|
|
def self.===(exception)
|
|
["can't modify frozen class/module",
|
|
"can't modify frozen Class",
|
|
].include?(exception.message)
|
|
end
|
|
end
|
|
|
|
# Don't catch these exceptions
|
|
DEFAULT_EXCEPTION_WHITELIST = [SystemExit,
|
|
SignalException,
|
|
Pry::TooSafeException]
|
|
|
|
# CommandErrors are caught by the REPL loop and displayed to the user. They
|
|
# indicate an exceptional condition that's fatal to the current command.
|
|
class CommandError < StandardError; end
|
|
class MethodNotFound < CommandError; end
|
|
|
|
# indicates obsolete API
|
|
class ObsoleteError < StandardError; end
|
|
|
|
# This is to keep from breaking under Rails 3.2 for people who are doing that
|
|
# IRB = Pry thing.
|
|
module ExtendCommandBundle
|
|
end
|
|
|
|
end
|