diff options
Diffstat (limited to 'platform/darwin/src/NSPredicate+MGLAdditions.mm')
| -rw-r--r-- | platform/darwin/src/NSPredicate+MGLAdditions.mm | 109 |
1 files changed, 88 insertions, 21 deletions
diff --git a/platform/darwin/src/NSPredicate+MGLAdditions.mm b/platform/darwin/src/NSPredicate+MGLAdditions.mm index 63c8307803..bbd324bb63 100644 --- a/platform/darwin/src/NSPredicate+MGLAdditions.mm +++ b/platform/darwin/src/NSPredicate+MGLAdditions.mm @@ -3,6 +3,8 @@ #import "MGLValueEvaluator.h" #import "MGLStyleValue_Private.h" +#include <mbgl/style/conversion/filter.hpp> + class FilterEvaluator { public: @@ -206,25 +208,18 @@ public: - (mbgl::style::Filter)mgl_filter { - if ([self isEqual:[NSPredicate predicateWithValue:YES]]) - { - return mbgl::style::AllFilter(); - } - - if ([self isEqual:[NSPredicate predicateWithValue:NO]]) - { - return mbgl::style::AnyFilter(); - } - - if ([self.predicateFormat hasPrefix:@"BLOCKPREDICATE("]) - { + mbgl::style::conversion::Error valueError; + NSArray *jsonObject = self.mgl_jsonExpressionObject; + auto value = mbgl::style::conversion::convert<mbgl::style::Filter>(mbgl::style::conversion::makeConvertible(jsonObject), valueError); + + if (!value) { [NSException raise:NSInvalidArgumentException - format:@"Block-based predicates are not supported."]; + format:@"Invalid filter value: %@", @(valueError.message.c_str())]; + return {}; } - - [NSException raise:NSInvalidArgumentException - format:@"Unrecognized predicate type."]; - return {}; + mbgl::style::Filter filter = std::move(*value); + + return filter; } + (instancetype)mgl_predicateWithFilter:(mbgl::style::Filter)filter @@ -280,7 +275,7 @@ NSArray *MGLSubpredicatesWithJSONObjects(NSArray *objects) { } if ([op isEqualToString:@">="]) { NSArray *subexpressions = MGLSubexpressionsWithJSONObjects([objects subarrayWithRange:NSMakeRange(1, objects.count - 1)]); - return [NSPredicate predicateWithFormat:@"%K >= %@" argumentArray:subexpressions]; + return [NSPredicate predicateWithFormat:@"%@ >= %@" argumentArray:subexpressions]; } if ([op isEqualToString:@"!"]) { NSArray *subpredicates = MGLSubpredicatesWithJSONObjects([objects subarrayWithRange:NSMakeRange(1, objects.count - 1)]); @@ -294,7 +289,43 @@ NSArray *MGLSubpredicatesWithJSONObjects(NSArray *objects) { return [NSPredicate predicateWithValue:YES]; } if ([op isEqualToString:@"all"]) { - NSArray *subpredicates = MGLSubpredicatesWithJSONObjects([objects subarrayWithRange:NSMakeRange(1, objects.count - 1)]); + NSArray<NSPredicate *> *subpredicates = MGLSubpredicatesWithJSONObjects([objects subarrayWithRange:NSMakeRange(1, objects.count - 1)]); + if (subpredicates.count == 2) { + // Determine if the expression is of BETWEEN type + if ([subpredicates[0] isKindOfClass:[NSComparisonPredicate class]] && + [subpredicates[1] isKindOfClass:[NSComparisonPredicate class]]) { + NSComparisonPredicate *leftCondition = (NSComparisonPredicate *)subpredicates[0]; + NSComparisonPredicate *rightCondition = (NSComparisonPredicate *)subpredicates[1]; + + NSArray *limits; + NSExpression *leftConditionExpression; + + if(leftCondition.predicateOperatorType == NSGreaterThanOrEqualToPredicateOperatorType && + rightCondition.predicateOperatorType == NSLessThanOrEqualToPredicateOperatorType) { + limits = @[leftCondition.rightExpression, rightCondition.rightExpression]; + leftConditionExpression = leftCondition.leftExpression; + + } else if (leftCondition.predicateOperatorType == NSLessThanOrEqualToPredicateOperatorType && + rightCondition.predicateOperatorType == NSLessThanOrEqualToPredicateOperatorType) { + limits = @[leftCondition.leftExpression, rightCondition.rightExpression]; + leftConditionExpression = leftCondition.rightExpression; + + } else if(leftCondition.predicateOperatorType == NSLessThanOrEqualToPredicateOperatorType && + rightCondition.predicateOperatorType == NSGreaterThanOrEqualToPredicateOperatorType) { + limits = @[leftCondition.leftExpression, rightCondition.leftExpression]; + leftConditionExpression = leftCondition.rightExpression; + + } else if(leftCondition.predicateOperatorType == NSGreaterThanOrEqualToPredicateOperatorType && + rightCondition.predicateOperatorType == NSGreaterThanOrEqualToPredicateOperatorType) { + limits = @[leftCondition.rightExpression, rightCondition.leftExpression]; + leftConditionExpression = leftCondition.leftExpression; + } + + if (limits && leftConditionExpression) { + return [NSPredicate predicateWithFormat:@"%@ BETWEEN %@", leftConditionExpression, [NSExpression expressionForAggregate:limits]]; + } + } + } return [NSCompoundPredicate andPredicateWithSubpredicates:subpredicates]; } if ([op isEqualToString:@"any"]) { @@ -302,8 +333,13 @@ NSArray *MGLSubpredicatesWithJSONObjects(NSArray *objects) { return [NSCompoundPredicate orPredicateWithSubpredicates:subpredicates]; } - NSAssert(NO, @"Unrecognized expression conditional operator %@.", op); - return nil; + NSExpression *expression = [NSExpression expressionWithMGLJSONObject:object]; + return [NSComparisonPredicate predicateWithLeftExpression:expression + rightExpression:[NSExpression expressionForConstantValue:@YES] + modifier:NSDirectPredicateModifier + type:NSEqualToPredicateOperatorType + options:0]; + } - (id)mgl_jsonExpressionObject { @@ -324,4 +360,35 @@ NSArray *MGLSubpredicatesWithJSONObjects(NSArray *objects) { return nil; } +- (id)mgl_if:(id)firstValue, ... { + + if ([self evaluateWithObject:nil]) { + return firstValue; + } + + id eachExpression; + va_list argumentList; + va_start(argumentList, firstValue); + + while ((eachExpression = va_arg(argumentList, id))) { + if ([eachExpression isKindOfClass:[NSComparisonPredicate class]]) { + id valueExpression = va_arg(argumentList, id); + if ([eachExpression evaluateWithObject:nil]) { + return valueExpression; + } + } else { + return eachExpression; + } + } + va_end(argumentList); + + return nil; +} + +- (id)mgl_match:(NSExpression *)firstCase, ... { + [NSException raise:NSInvalidArgumentException + format:@"Match expressions lack underlying Objective-C implementations."]; + return nil; +} + @end |