Commit 9aa705dd authored by Yorick Peterse's avatar Yorick Peterse

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.
parent f5e3ce5e
......@@ -97,9 +97,9 @@ module Mentionable
# Allows heavy processing to be skipped
def matches_cross_reference_regex?
reference_pattern = if !project || project.default_issues_tracker?
ReferenceRegexes::DEFAULT_PATTERN
ReferenceRegexes.default_pattern
else
ReferenceRegexes::EXTERNAL_PATTERN
ReferenceRegexes.external_pattern
end
self.class.mentionable_attrs.any? do |attr, _|
......
......@@ -2,6 +2,8 @@
module Mentionable
module ReferenceRegexes
extend Gitlab::Utils::StrongMemoize
def self.reference_pattern(link_patterns, issue_pattern)
Regexp.union(link_patterns,
issue_pattern,
......@@ -15,16 +17,20 @@ module Mentionable
]
end
DEFAULT_PATTERN = begin
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
EXTERNAL_PATTERN = begin
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
......@@ -9,7 +9,7 @@ class IssueTrackerService < Service
# Override this method on services that uses different patterns
# This pattern does not support cross-project references
# The other code assumes that this pattern is a superset of all
# overridden patterns. See ReferenceRegexes::EXTERNAL_PATTERN
# overridden patterns. See ReferenceRegexes.external_pattern
def self.reference_pattern(only_long: false)
if only_long
/(\b[A-Z][A-Z0-9_]*-)(?<issue>\d+)/
......
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