class UncaughtThrowError - Documentation for Ruby 4.0
Description: class UncaughtThrowError: Raised when +throw+ is called with a _tag_ which does not have corresponding +catch+ block.
Keywords: ruby,class,UncaughtThrowError

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# class UncaughtThrowError

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"

### Public Class Methods

new (*args)
Source

    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;
    }

Document-class: `UncaughtThrowError`

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"

### Public Instance Methods

tag → obj
Source

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

Return the tag object which was called for.

to_s → string
Source

    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);
    }

Returns formatted message with the inspected tag.

value → obj
Source

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

Return the return value which was called for.