PBGitCommit: Don't store refs

We already keep this dictionary in our repository. Rather than adding a
pointer to it on every commit in our rev walk, just look it up lazily in the
dictionary when we need to. That cuts down some time in the initial revwalk
and also removes some stupid code :)

PBGitCommit.h

@@ -21,7 +21,7 @@
 	NSString* details;
 	NSString *_patch;
 	NSArray* parents;
-	NSMutableArray* refs;
+
 	int timestamp;
 	char sign;
 	id lineInfo;

PBGitCommit.m

@@ -11,7 +11,7 @@
 
 @implementation PBGitCommit
 
-@synthesize repository, subject, timestamp, author, parentShas, nParents, sign, lineInfo, refs;
+@synthesize repository, subject, timestamp, author, parentShas, nParents, sign, lineInfo;
 
 - (NSArray *) parents
 {
@@ -107,9 +107,19 @@ - (void)removeRef:(id)ref
 	if (!self.refs)
 		return;
 
-	[refs removeObject:ref];
-	if ([refs count] == 0)
-		refs = NULL;
+	[self.refs removeObject:ref];
+	if ([self.refs count] == 0)
+		self.refs = NULL;
+}
+
+- (NSMutableArray *)refs
+{
+	return [[repository refs] objectForKey:[self realSha]];
+}
+
+- (void) setRefs:(NSMutableArray *)refs
+{
+	[[repository refs] setObject:[self realSha] forKey:[self realSha]];
 }
 
 - (void)finalize

PBGitGrapher.h

@@ -15,8 +15,6 @@
 	PBGraphCellInfo *previous;
 	void *pl;
 	int curLane;
-
-	NSDictionary *refs;
 }
 
 - (id) initWithRepository:(PBGitRepository *)repo;

PBGitGrapher.mm

@@ -21,7 +21,6 @@ @implementation PBGitGrapher
 
 - (id) initWithRepository: (PBGitRepository*) repo
 {
-	refs = repo.refs;
 	pl = new std::list<PBGitLane *>;
 
 	PBGitLane::resetColors();

PBGitRepository.h

@@ -62,5 +62,5 @@ extern NSString* PBGitRepositoryErrorDomain;
 @property (retain) PBGitRevList* revisionList;
 @property (assign) NSMutableArray* branches;
 @property (assign) PBGitRevSpecifier *currentBranch;
-@property (assign) NSMutableDictionary* refs;
+@property (retain) NSMutableDictionary* refs;
 @end

PBGitRepository.m

@@ -228,8 +228,6 @@ - (BOOL) reloadRefs
 		[self addRef:newRef fromParameters:components];
 	}
 
-	self.refs = refs;
-
 	// Add an "All branches" option in the branches list
 	[self addBranch:[PBGitRevSpecifier allBranchesRevSpec]];
 	[self addBranch:[PBGitRevSpecifier localBranchesRevSpec]];

PBGitRevList.mm

@@ -71,7 +71,6 @@ - (void) walkRevisionListWithSpecifier: (PBGitRevSpecifier*) rev
 	NSDate *start = [NSDate date];
 	NSMutableArray* revisions = [NSMutableArray array];
 	PBGitGrapher* g = [[PBGitGrapher alloc] initWithRepository: repository];
-	NSDictionary* refs = [repository refs];
 
 	NSMutableArray* arguments;
 	BOOL showSign = [rev hasLeftRight];
@@ -170,11 +169,7 @@ - (void) walkRevisionListWithSpecifier: (PBGitRevSpecifier*) rev
 
 		[revisions addObject: newCommit];
 		[g decorateCommit: newCommit];
-
-		// 0.1 second on linux-2.6
-		if (refs && [refs objectForKey:[newCommit realSha]])
-			newCommit.refs = [refs objectForKey:[newCommit realSha]];
-
+
 		if (++num % 1000 == 0)
 			[self performSelectorOnMainThread:@selector(setCommits:) withObject:revisions waitUntilDone:NO];
 	}

html/views/history/history.js

@@ -2,7 +2,7 @@ var commit;
 var Commit = function(obj) {
 	this.object = obj;
 
-	this.refs = obj.refs;
+	this.refs = obj.refs();
 	this.author_name = obj.author;
 	this.sha = obj.realSha();
 	this.parents = obj.parents;