74 lines
2.6 KiB
Plaintext
74 lines
2.6 KiB
Plaintext
#import "NSCompoundPredicate+MGLAdditions.h"
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#import "NSPredicate+MGLAdditions.h"
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#import "NSExpression+MGLAdditions.h"
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@implementation NSCompoundPredicate (MGLAdditions)
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- (std::vector<mbgl::style::Filter>)mgl_subfilters
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{
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std::vector<mbgl::style::Filter>filters;
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for (NSPredicate *predicate in self.subpredicates) {
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filters.push_back(predicate.mgl_filter);
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}
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return filters;
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}
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- (mbgl::style::Filter)mgl_filter
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{
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switch (self.compoundPredicateType) {
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case NSNotPredicateType: {
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NSAssert(self.subpredicates.count <= 1, @"NOT predicate cannot have multiple subpredicates.");
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NSPredicate *subpredicate = self.subpredicates.firstObject;
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mbgl::style::Filter subfilter = subpredicate.mgl_filter;
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// Convert NOT(!= nil) to NotHasFilter.
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if (subfilter.is<mbgl::style::HasFilter>()) {
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auto hasFilter = subfilter.get<mbgl::style::HasFilter>();
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return mbgl::style::NotHasFilter { .key = hasFilter.key };
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}
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// Convert NOT(== nil) to HasFilter.
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if (subfilter.is<mbgl::style::NotHasFilter>()) {
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auto hasFilter = subfilter.get<mbgl::style::NotHasFilter>();
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return mbgl::style::HasFilter { .key = hasFilter.key };
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}
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// Convert NOT(IN) or NOT(CONTAINS) to NotInFilter.
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if (subfilter.is<mbgl::style::InFilter>()) {
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auto inFilter = subfilter.get<mbgl::style::InFilter>();
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mbgl::style::NotInFilter notInFilter;
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notInFilter.key = inFilter.key;
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notInFilter.values = inFilter.values;
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return notInFilter;
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}
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// Convert NOT(), NOT(AND), NOT(NOT), NOT(==), etc. into NoneFilter.
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mbgl::style::NoneFilter noneFilter;
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if (subfilter.is<mbgl::style::AnyFilter>()) {
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// Flatten NOT(OR).
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noneFilter.filters = subfilter.get<mbgl::style::AnyFilter>().filters;
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} else if (subpredicate) {
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noneFilter.filters = { subfilter };
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}
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return noneFilter;
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}
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case NSAndPredicateType: {
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mbgl::style::AllFilter filter;
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filter.filters = self.mgl_subfilters;
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return filter;
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}
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case NSOrPredicateType: {
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mbgl::style::AnyFilter filter;
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filter.filters = self.mgl_subfilters;
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return filter;
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}
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}
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[NSException raise:@"Compound predicate type not handled"
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format:@""];
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return {};
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}
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@end
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