diff options
Diffstat (limited to 'platform/darwin/src/NSPredicate+MGLAdditions.mm')
| -rw-r--r-- | platform/darwin/src/NSPredicate+MGLAdditions.mm | 113 |
1 files changed, 81 insertions, 32 deletions
diff --git a/platform/darwin/src/NSPredicate+MGLAdditions.mm b/platform/darwin/src/NSPredicate+MGLAdditions.mm index 64ad277e4d..0ac68095f9 100644 --- a/platform/darwin/src/NSPredicate+MGLAdditions.mm +++ b/platform/darwin/src/NSPredicate+MGLAdditions.mm @@ -5,7 +5,7 @@ class FilterEvaluator { public: - NSArray* getPredicates(std::vector<mbgl::style::Filter> filters) { + NSArray *getPredicates(std::vector<mbgl::style::Filter> filters) { NSMutableArray *predicates = [NSMutableArray arrayWithCapacity:filters.size()]; for (auto filter : filters) { [predicates addObject:mbgl::style::Filter::visit(filter, FilterEvaluator())]; @@ -13,73 +13,118 @@ public: return predicates; } - NSArray* getValues(std::vector<mbgl::Value> values) { + NSExpression *getValues(std::vector<mbgl::Value> values) { NSMutableArray *array = [NSMutableArray arrayWithCapacity:values.size()]; for (auto value : values) { - [array addObject:mbgl::Value::visit(value, ValueEvaluator())]; + id constantValue = mbgl::Value::visit(value, ValueEvaluator()); + [array addObject:[NSExpression expressionForConstantValue:constantValue]]; } - return array; + return [NSExpression expressionForAggregate:array]; } - NSPredicate* operator()(mbgl::style::NullFilter filter) { + NSPredicate *operator()(mbgl::style::NullFilter filter) { return nil; } - NSPredicate* operator()(mbgl::style::EqualsFilter filter) { + NSPredicate *operator()(mbgl::style::EqualsFilter filter) { return [NSPredicate predicateWithFormat:@"%K == %@", @(filter.key.c_str()), mbgl::Value::visit(filter.value, ValueEvaluator())]; } - NSPredicate* operator()(mbgl::style::NotEqualsFilter filter) { + NSPredicate *operator()(mbgl::style::NotEqualsFilter filter) { return [NSPredicate predicateWithFormat:@"%K != %@", @(filter.key.c_str()), mbgl::Value::visit(filter.value, ValueEvaluator())]; } - NSPredicate* operator()(mbgl::style::GreaterThanFilter filter) { + NSPredicate *operator()(mbgl::style::GreaterThanFilter filter) { return [NSPredicate predicateWithFormat:@"%K > %@", @(filter.key.c_str()), mbgl::Value::visit(filter.value, ValueEvaluator())]; } - NSPredicate* operator()(mbgl::style::GreaterThanEqualsFilter filter) { + NSPredicate *operator()(mbgl::style::GreaterThanEqualsFilter filter) { return [NSPredicate predicateWithFormat:@"%K >= %@", @(filter.key.c_str()), mbgl::Value::visit(filter.value, ValueEvaluator())]; } - NSPredicate* operator()(mbgl::style::LessThanFilter filter) { + NSPredicate *operator()(mbgl::style::LessThanFilter filter) { return [NSPredicate predicateWithFormat:@"%K < %@", @(filter.key.c_str()), mbgl::Value::visit(filter.value, ValueEvaluator())]; } - NSPredicate* operator()(mbgl::style::LessThanEqualsFilter filter) { + NSPredicate *operator()(mbgl::style::LessThanEqualsFilter filter) { return [NSPredicate predicateWithFormat:@"%K <= %@", @(filter.key.c_str()), mbgl::Value::visit(filter.value, ValueEvaluator())]; } - NSPredicate* operator()(mbgl::style::InFilter filter) { + NSPredicate *operator()(mbgl::style::InFilter filter) { return [NSPredicate predicateWithFormat:@"%K IN %@", @(filter.key.c_str()), getValues(filter.values)]; } - NSPredicate* operator()(mbgl::style::NotInFilter filter) { + NSPredicate *operator()(mbgl::style::NotInFilter filter) { return [NSPredicate predicateWithFormat:@"NOT %K IN %@", @(filter.key.c_str()), getValues(filter.values)]; } - NSPredicate* operator()(mbgl::style::AnyFilter filter) { - return [NSCompoundPredicate orPredicateWithSubpredicates:getPredicates(filter.filters)]; - } - - NSPredicate* operator()(mbgl::style::AllFilter filter) { - return [NSCompoundPredicate andPredicateWithSubpredicates:getPredicates(filter.filters)]; + NSPredicate *operator()(mbgl::style::AnyFilter filter) { + NSArray *subpredicates = getPredicates(filter.filters); + if (subpredicates.count) { + return [NSCompoundPredicate orPredicateWithSubpredicates:subpredicates]; + } + return [NSPredicate predicateWithValue:NO]; + } + + NSPredicate *operator()(mbgl::style::AllFilter filter) { + // Convert [all, [>=, key, lower], [<=, key, upper]] to key BETWEEN {lower, upper} + if (filter.filters.size() == 2) { + auto leftFilter = filter.filters[0]; + auto rightFilter = filter.filters[1]; + + std::string lowerKey; + std::string upperKey; + mbgl::Value lowerBound; + mbgl::Value upperBound; + if (leftFilter.is<mbgl::style::GreaterThanEqualsFilter>()) { + lowerKey = leftFilter.get<mbgl::style::GreaterThanEqualsFilter>().key; + lowerBound = leftFilter.get<mbgl::style::GreaterThanEqualsFilter>().value; + } else if (rightFilter.is<mbgl::style::GreaterThanEqualsFilter>()) { + lowerKey = rightFilter.get<mbgl::style::GreaterThanEqualsFilter>().key; + lowerBound = rightFilter.get<mbgl::style::GreaterThanEqualsFilter>().value; + } + + if (leftFilter.is<mbgl::style::LessThanEqualsFilter>()) { + upperKey = leftFilter.get<mbgl::style::LessThanEqualsFilter>().key; + upperBound = leftFilter.get<mbgl::style::LessThanEqualsFilter>().value; + } else if (rightFilter.is<mbgl::style::LessThanEqualsFilter>()) { + upperKey = rightFilter.get<mbgl::style::LessThanEqualsFilter>().key; + upperBound = rightFilter.get<mbgl::style::LessThanEqualsFilter>().value; + } + + if (!lowerBound.is<mbgl::NullValue>() && !upperBound.is<mbgl::NullValue>() + && lowerKey == upperKey) { + return [NSPredicate predicateWithFormat:@"%K BETWEEN {%@, %@}", + @(lowerKey.c_str()), + mbgl::Value::visit(lowerBound, ValueEvaluator()), + mbgl::Value::visit(upperBound, ValueEvaluator())]; + } + } + + NSArray *subpredicates = getPredicates(filter.filters); + if (subpredicates.count) { + return [NSCompoundPredicate andPredicateWithSubpredicates:subpredicates]; + } + return [NSPredicate predicateWithValue:YES]; } - NSPredicate* operator()(mbgl::style::NoneFilter filter) { - NSArray *predicates = getPredicates(filter.filters); - if (predicates.count > 1) { - NSCompoundPredicate *predicate = [NSCompoundPredicate andPredicateWithSubpredicates:predicates]; + NSPredicate *operator()(mbgl::style::NoneFilter filter) { + NSArray *subpredicates = getPredicates(filter.filters); + if (subpredicates.count > 1) { + NSCompoundPredicate *predicate = [NSCompoundPredicate orPredicateWithSubpredicates:subpredicates]; return [NSCompoundPredicate notPredicateWithSubpredicate:predicate]; + } else if (subpredicates.count) { + return [NSCompoundPredicate notPredicateWithSubpredicate:subpredicates.firstObject]; } else { - return [NSCompoundPredicate notPredicateWithSubpredicate:predicates.firstObject]; + return [NSPredicate predicateWithValue:YES]; } } - NSPredicate* operator()(mbgl::style::HasFilter filter) { + NSPredicate *operator()(mbgl::style::HasFilter filter) { return [NSPredicate predicateWithFormat:@"%K != nil", @(filter.key.c_str())]; } - NSPredicate* operator()(mbgl::style::NotHasFilter filter) { + NSPredicate *operator()(mbgl::style::NotHasFilter filter) { return [NSPredicate predicateWithFormat:@"%K == nil", @(filter.key.c_str())]; } @@ -91,18 +136,22 @@ public: { if ([self isEqual:[NSPredicate predicateWithValue:YES]]) { - auto filter = mbgl::style::AllFilter(); - return filter; + return mbgl::style::AllFilter(); } if ([self isEqual:[NSPredicate predicateWithValue:NO]]) { - auto filter = mbgl::style::AnyFilter(); - return filter; + return mbgl::style::AnyFilter(); + } + + if ([self.predicateFormat hasPrefix:@"BLOCKPREDICATE("]) + { + [NSException raise:NSInvalidArgumentException + format:@"Block-based predicates are not supported."]; } - [NSException raise:@"Not supported" - format:@"Try with NSComparisonPredicate or NSCompoundPredicate instead."]; + [NSException raise:NSInvalidArgumentException + format:@"Unrecognized predicate type."]; return {}; } |