NAME

CoreHackers::Sourcery - Show source locations of core methods and subs

SYNOPSIS

use CoreHackers::Sourcery;
&say.sourcery("foo").put;

# OUTPUT:
# src/core/io_operators.pm:22 https://github.com/rakudo/rakudo/blob/c843682/src/core/io_operators.pm#L22

put sourcery Int, 'abs';         # method called on a type object
put sourcery 42,  'split';       # method called on an Int object
put sourcery 42,  'base', \(16); # method call with args

DESCRIPTION

This module provides the actual location of the sub or method definition in Rakudo's source code.

BLOG POST

Related blog post.

METHODS

&say.sourcery.put;        # location of the `proto`
&say.sourcery('foo').put; # location of the candidate that can do 'foo'

The core Code class and its core subclasses get augmented with a .sourcery method. Calling this method without arguments provides the location of the method or sub, or the proto of the multi.

When called with arguments, returns the location of the narrowest candidate, possibly dieing if no candidate can be found.

Returns a list of two strings: the file:line-number referring to the core file and the GitHub URL.

EXPORTED SUBROUTINES

sourcery

put sourcery &say;              # just Code object
put sourcery &say, \('foo');    # find best candidate for a Code object
put sourcery Int, 'abs';        # method `abs` on a type object

# find best candidate for method `base` on object 42, with argument `16`
put sourcery 42, 'base', \(16);

Operates similar to the method form, except allows more flexibility, such as passing object/method names. Returns a list of two strings: the file:line-number referring to the core file and the GitHub URL.

ENVIRONMENT VARIABLES

SOURCERY_SETTING

The location of the setting file. Defaults to:

$*EXECUTABLE.parent.parent.parent.child(&say.file)

This will generally work for most installs.

AUTHOR

Zoffix Znet

COPYRIGHT AND LICENSE

Copyright 2016 - 2018 Zoffix Znet

Copyright 2019 - 2022 Raku Community

This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.