NAME
Bitcoin::Crypto::Exception - Exception classes for Bitcoin::Crypto
SYNOPSIS
try {
decode_segwit('Not a segwit address');
}
catch ($error) {
# $error is an instance of Bitcoin::Crypto::Exception and stringifies automatically
warn "$error";
# it also contains some information about the problem to avoid regex matching
if ($error->isa('Bitcoin::Crypto::Exception::Bech32InputFormat')) {
log $error->message;
}
}DESCRIPTION
An exception wrapper class with automatic stringification and standarized raising.
Contains inline packages that identify parts that went wrong (like Bitcoin::Crypto::Exception::Sign for errors in signature generation). Search individual Bitcoin::Crypto packages documentation for a list the exception classes to check for extra control flow when needed.
INTERFACE
Attributes
message
The wrapped error message (a string). Note: this is the raw message, not the serialized form like in "as_string".
caller
Not assignable in the constructor
An array ref containing: package name, file name and line number (same as [caller()] perl expression). It will point to the first place from outside Bitcoin::Crypto which called it. May be undefined if it cannot find a calling source.
Methods
new
$runner = Bitcoin::Crypto::Exception->new(%data)This is a standard Moo constructor, which can be used to create the object. It takes arguments specified in "Attributes". For exceptions, it's probably better to use "raise" instead.
Returns class instance.
as_string
$error_info = $object->as_string()Stringifies the error, using the "message" method, "caller" method and some extra text for context.
raise
$object->raise()
$class->raise($message)Creates a new instance and throws it. If used on an object, throws it right away.
try {
# throws, but will be catched
Bitcoin::Crypto::Exception->raise('something went wrong');
}
catch ($exception) {
# throws again
$exception->raise;
}throw
An alias to raise.
trap_into
$sub_result = $class->trap_into($sub, $prefix)Executes the given subroutine in an exception-trapping environment. Any exceptions thrown inside the subroutine $sub will be re-thrown after turning them into objects of the given ::Exception class. If no exception is thrown, method returns the value returned by $sub.
my $result = Bitcoin::Crypto::Exception->trap_into(sub {
die 'something went wrong';
});$prefix can be specified to better format the message.