[PATCH 2 of 4] verify: introduce a notion of "level"

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at octobus.net>
# Date 1555456341 -7200
#      Wed Apr 17 01:12:21 2019 +0200
# Node ID 55bd98999c25b10e220477fd4cc446a7c9c1f8ca
# Parent  f233cb63bc077267d8571378350d9563cbabcf3d
# EXP-Topic verify
# Available At https://bitbucket.org/octobus/mercurial-devel/
#              hg pull https://bitbucket.org/octobus/mercurial-devel/ -r 55bd98999c25
verify: introduce a notion of "level"

Some checks are slower than others, to help the user to run the checks he needs,
we are about to introduce new flag to select faster vs deeper runs. This put
the scaffolding in place to do this.

diff --git a/mercurial/hg.py b/mercurial/hg.py
--- a/mercurial/hg.py
+++ b/mercurial/hg.py
@@ -1092,9 +1092,9 @@ def outgoing(ui, repo, dest, opts):
     recurse()
     return 0 # exit code is zero since we found outgoing changes
 
-def verify(repo):
+def verify(repo, level=None):
     """verify the consistency of a repository"""
-    ret = verifymod.verify(repo)
+    ret = verifymod.verify(repo, level=level)
 
     # Broken subrepo references in hidden csets don't seem worth worrying about,
     # since they can't be pushed/pulled, and --hidden can be used if they are a
diff --git a/mercurial/verify.py b/mercurial/verify.py
--- a/mercurial/verify.py
+++ b/mercurial/verify.py
@@ -22,9 +22,12 @@ from . import (
     util,
 )
 
-def verify(repo):
+VERIFY_DEFAULT = 0
+
+def verify(repo, level=None):
     with repo.lock():
-        return verifier(repo).verify()
+        v = verifier(repo, level)
+        return v.verify()
 
 def _normpath(f):
     # under hg < 2.4, convert didn't sanitize paths properly, so a
@@ -34,10 +37,13 @@ def _normpath(f):
     return f
 
 class verifier(object):
-    def __init__(self, repo):
+    def __init__(self, repo, level=None):
         self.repo = repo.unfiltered()
         self.ui = repo.ui
         self.match = repo.narrowmatch()
+        if level is None:
+            level = VERIFY_DEFAULT
+        self._level = level
         self.badrevs = set()
         self.errors = 0
         self.warnings = 0