gitlab-org--gitlab-foss/app/models/concerns/mentionable/reference_regexes.rb
Yorick Peterse 9aa705dd38
Turn reference regex constants into methods
`Mentionable::ReferenceRegexes` used to define the following two
constants:

1. DEFAULT_PATTERN
2. EXTERNAL_PATTERN

These two constants were built using some of the class methods that
reside in this same module. In EE we redefine one of these methods by
using `prepend` at the start of the `ReferenceRegexes` module. This
poses a problem: we can not move the `prepend` to the end of the file,
because the constants later on depend on it.

To resolve this problem, this commit turns these constants into class
methods that memoize their results. This allows EE to redefine the
appropriate methods before these two class methods are used, in turn
allowing us to move the `prepend` to the end of the file.

See https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8198 for more
information.
2018-11-12 13:50:31 +01:00

36 lines
993 B
Ruby

# frozen_string_literal: true
module Mentionable
module ReferenceRegexes
extend Gitlab::Utils::StrongMemoize
def self.reference_pattern(link_patterns, issue_pattern)
Regexp.union(link_patterns,
issue_pattern,
*other_patterns)
end
def self.other_patterns
[
Commit.reference_pattern,
MergeRequest.reference_pattern
]
end
def self.default_pattern
strong_memoize(:default_pattern) do
issue_pattern = Issue.reference_pattern
link_patterns = Regexp.union([Issue, Commit, MergeRequest, Epic].map(&:link_reference_pattern).compact)
reference_pattern(link_patterns, issue_pattern)
end
end
def self.external_pattern
strong_memoize(:external_pattern) do
issue_pattern = IssueTrackerService.reference_pattern
link_patterns = URI.regexp(%w(http https))
reference_pattern(link_patterns, issue_pattern)
end
end
end
end