class Exception

Overview

Represents errors that occur during application execution.

Exception and it's descendants are used to communicate between raise and rescue statements in begin ... end blocks. Exception objects carry information about the exception – its type (the exception’s class name), an optional descriptive string, and optional traceback information. Exception subclasses may add additional information.

Direct Known Subclasses

Defined in:

exception.cr

Class Method Summary

Instance Method Summary

Instance methods inherited from class Reference

==(other : self)
==(other)
==
, dup dup, hash hash, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, pretty_print(pp) : Nil pretty_print, same?(other : Reference)
same?(other : Nil)
same?
, to_s(io : IO) : Nil to_s

Class methods inherited from class Reference

new new

Instance methods inherited from class Object

!=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other)
===
, =~(other) =~, class class, dup dup, hash hash, inspect(io : IO)
inspect
inspect
, itself itself, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, tap(&block) tap, to_json(io : IO)
to_json
to_json
, to_pretty_json(indent : String = " ")
to_pretty_json(io : IO, indent : String = " ")
to_pretty_json
, to_s
to_s(io : IO)
to_s
, to_yaml(io : IO)
to_yaml
to_yaml
, try(&block) try

Class methods inherited from class Object

from_json(string_or_io, root : String) : self
from_json(string_or_io) : self
from_json
, from_yaml(string_or_io) : self from_yaml

Class Method Detail

def self.new(message : String? = nil, cause : Exception? = nil) #

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Instance Method Detail

def backtrace #

Returns any backtrace associated with the exception. The backtrace is an array of strings, each containing “0xAddress: Function at File Line Column”.


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def backtrace? #

Returns any backtrace associated with the exception if the call stack exists. The backtrace is an array of strings, each containing “0xAddress: Function at File Line Column”.


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def callstack : CallStack? #

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def callstack=(callstack : CallStack?) #

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def cause : Exception? #

Returns the previous exception at the time this exception was raised. This is useful for wrapping exceptions and retaining the original exception information.


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def inspect_with_backtrace(io : IO) #

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def inspect_with_backtrace #

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def message : String? #

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def to_s(io : IO) #

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