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Exception: UncaughtThrowError

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
Instance Chain:
Inherits: ArgumentError
Defined in: vm_eval.c,
vm_eval.c

Overview

Raised when throw is called with a tag which does not have corresponding catch block.

throw "foo", "bar"

raises the exception:

UncaughtThrowError: uncaught throw "foo"

Class Attribute Summary

::Exception - Inherited

.to_tty?

Returns true if exception messages will be sent to a tty.

Class Method Summary

  • .new(*args) constructor

    Raised when throw is called with a tag which does not have corresponding catch block.

::Exception - Inherited

.exception

With no argument, or if the argument is the same as the receiver, return the receiver.

.new

Construct a new ::Exception object, optionally passing in a message.

Instance Method Summary

::Exception - Inherited

#==

Equality—If obj is not an ::Exception, returns false.

#backtrace

Returns any backtrace associated with the exception.

#backtrace_locations

Returns any backtrace associated with the exception.

#cause

Returns the previous exception ($!) at the time this exception was raised.

#exception

With no argument, or if the argument is the same as the receiver, return the receiver.

#full_message

Returns formatted string of exception.

#inspect

Return this exception's class name and message.

#message

Returns the result of invoking exception.to_s.

#set_backtrace

Sets the backtrace information associated with exc.

#to_s

Returns exception's message (or the name of the exception if no message is set).

Constructor Details

.new(*args)

Raised when throw is called with a tag which does not have corresponding catch block.

throw "foo", "bar"

raises the exception:

UncaughtThrowError: uncaught throw "foo"
[ GitHub ]

  
# File 'vm_eval.c', line 1808

static VALUE
uncaught_throw_init(int argc, const VALUE *argv, VALUE exc)
{
    rb_check_arity(argc, 2, UNLIMITED_ARGUMENTS);
    rb_call_super(argc - 2, argv + 2);
    rb_ivar_set(exc, id_tag, argv[0]);
    rb_ivar_set(exc, id_value, argv[1]);
    return exc;
}

Instance Method Details

#tagObject

Return the tag object which was called for.

[ GitHub ]

  
# File 'vm_eval.c', line 1825

static VALUE
uncaught_throw_tag(VALUE exc)
{
    return rb_ivar_get(exc, id_tag);
}

#to_sString

Returns formatted message with the inspected tag.

[ GitHub ]

  
# File 'vm_eval.c', line 1851

static VALUE
uncaught_throw_to_s(VALUE exc)
{
    VALUE mesg = rb_attr_get(exc, id_mesg);
    VALUE tag = uncaught_throw_tag(exc);
    return rb_str_format(1, &tag, mesg);
}

#valueObject

Return the return value which was called for.

[ GitHub ]

  
# File 'vm_eval.c', line 1838

static VALUE
uncaught_throw_value(VALUE exc)
{
    return rb_ivar_get(exc, id_value);
}