diff options
Diffstat (limited to 'platform/darwin/src/MGLCluster.mm')
| -rw-r--r-- | platform/darwin/src/MGLCluster.mm | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/platform/darwin/src/MGLCluster.mm b/platform/darwin/src/MGLCluster.mm deleted file mode 100644 index 2cc296fa91..0000000000 --- a/platform/darwin/src/MGLCluster.mm +++ /dev/null @@ -1,155 +0,0 @@ -#import "MGLFoundation_Private.h" -#import "MGLCluster_Private.h" -#import "MGLLoggingConfiguration_Private.h" -#import "MGLFeature.h" -#import <objc/runtime.h> - -NSString * const MGLClusterBoolKey = @"cluster"; -NSString * const MGLClusterIdentifierKey = @"cluster_id"; -NSString * const MGLClusterCountKey = @"point_count"; -//NSString * const MGLClusterCountAbbreviationKey = @"point_count_abbreviated"; - -const NSUInteger MGLClusterIdentifierInvalid = NSUIntegerMax; - -BOOL MGLFeatureHasClusterAttribute(id<MGLFeature> feature) { - NSNumber *isCluster = MGL_OBJC_DYNAMIC_CAST([feature attributeForKey:MGLClusterBoolKey], NSNumber); - return [isCluster boolValue]; -} - -#pragma mark - Custom subclassing - -NSString *MGLClusterSubclassNameForFeature(id<MGLFeature> feature) { - NSString *className = NSStringFromClass([feature class]); - NSString *subclassName = [className stringByAppendingString:@"_Cluster"]; - return subclassName; -} - -/** - Static free function used as implementation for custom subclasses (that conform - to both `MGLFeature` and `MGLCluster`). - */ -static NSUInteger MGLClusterIdentifierIMP(id self, SEL _cmd) { - - id<MGLFeature> feature = MGL_OBJC_DYNAMIC_CAST_AS_PROTOCOL(self, MGLFeature); - - NSNumber *clusterNumber = MGL_OBJC_DYNAMIC_CAST([feature attributeForKey:MGLClusterIdentifierKey], NSNumber); - MGLAssert(clusterNumber, @"Clusters should have a cluster_id"); - - if (!clusterNumber) { - return MGLClusterIdentifierInvalid; - } - - NSUInteger identifier = [clusterNumber unsignedIntegerValue]; - MGLAssert(identifier <= UINT32_MAX, @"Cluster identifiers are 32bit"); - - return identifier; -} - -/** - Static free function used as implementation for custom subclasses (that conform - to both `MGLFeature` and `MGLCluster`). - */ -static NSUInteger MGLClusterPointCountIMP(id self, SEL _cmd) { - id<MGLFeature> feature = MGL_OBJC_DYNAMIC_CAST_AS_PROTOCOL(self, MGLFeature); - - NSNumber *count = MGL_OBJC_DYNAMIC_CAST([feature attributeForKey:MGLClusterCountKey], NSNumber); - MGLAssert(count, @"Clusters should have a point_count"); - - return [count unsignedIntegerValue]; -} - -///** -// Static free function used as implementation for custom subclasses (that conform -// to both `MGLFeature` and `MGLCluster`). -// */ -//static NSString *MGLClusterPointCountAbbreviationIMP(id self, SEL _cmd) { -// id<MGLFeature> feature = MGL_OBJC_DYNAMIC_CAST_AS_PROTOCOL(self, MGLFeature); -// -// NSString *abbreviation = MGL_OBJC_DYNAMIC_CAST([feature attributeForKey:MGLClusterCountAbbreviationKey], NSString); -// MGLAssert(abbreviation, @"Clusters should have a point_count_abbreviated"); -// -// if (!abbreviation) { -// return @"0"; -// } -// -// return abbreviation; -//} - -static IMP MGLFeatureClusterIMPFromSelector(SEL selector) { - if (selector == @selector(clusterIdentifier)) { - return (IMP)MGLClusterIdentifierIMP; - } - else if (selector == @selector(clusterPointCount)) { - return (IMP)MGLClusterPointCountIMP; - } -// else if (selector == @selector(clusterPointCountAbbreviation)) { -// return (IMP)MGLClusterPointCountAbbreviationIMP; -// } - MGLCAssert(0, @"Unrecognized selector: %@", NSStringFromSelector(selector)); - return NULL; -} - -/** - Converts a feature to a custom subclass that supports both `MGLFeature` and - `MGLCluster`, or returns `nil` if the feature doesn't have the requisite cluster - attributes. - */ -id<MGLFeature, MGLCluster> MGLConvertFeatureToClusterSubclass(id<MGLFeature> feature) { - - Protocol *clusterProtocol = @protocol(MGLCluster); - - if ([feature conformsToProtocol:clusterProtocol]) { - return (id<MGLFeature, MGLCluster>)feature; - } - - if (!MGLFeatureHasClusterAttribute(feature)) { - return nil; - } - - Class currentClass = [feature class]; - - NSString *subclassName = MGLClusterSubclassNameForFeature(feature); - - // Does this new subclass already exist? - Class clusterSubclass = NSClassFromString(subclassName); - - if (!clusterSubclass) { - clusterSubclass = objc_allocateClassPair(currentClass, subclassName.UTF8String, 0); - - // Add protocol to this new subclass - class_addProtocol(clusterSubclass, clusterProtocol); - - // Install protocol methods - // Run through using `protocol_copyMethodDescriptionList` and the above - // `MGLFeatureClusterIMPFromSelector` method. We do this so that we avoid - // having to hand-craft the type encodings passed to `class_addMethod`. - unsigned int count = 0; - struct objc_method_description *methodDescriptionList = protocol_copyMethodDescriptionList(clusterProtocol, YES, YES, &count); - - for (unsigned int index = 0; index < count; index++) { - struct objc_method_description desc = methodDescriptionList[index]; - - IMP imp = MGLFeatureClusterIMPFromSelector(desc.name); - - if (imp) { - class_addMethod(clusterSubclass, desc.name, imp, desc.types); - } - } - - free(methodDescriptionList); methodDescriptionList = NULL; - - objc_registerClassPair(clusterSubclass); - } - - // Now change the class of the feature - object_setClass(feature, clusterSubclass); - MGLCAssert([feature conformsToProtocol:clusterProtocol], @"Feature subclass %@ should conform to MGLCluster", subclassName); - - id<MGLFeature, MGLCluster> cluster = (id<MGLFeature, MGLCluster>)feature; - - MGLCAssert([cluster respondsToSelector:@selector(clusterIdentifier)], @"Feature subclass %@ - missing selector `clusterIdentifier`", subclassName); - MGLCAssert([cluster respondsToSelector:@selector(clusterPointCount)], @"Feature subclass %@ - missing selector `clusterPointCount`", subclassName); -// MGLCAssert([cluster respondsToSelector:@selector(clusterPointCountAbbreviation)], @"Feature subclass %@ - missing selector `clusterPointCountAbbreviation`", subclassName); - - return cluster; -} |