diff options
Diffstat (limited to 'platform/darwin/src/NSExpression+MGLAdditions.mm')
| -rw-r--r-- | platform/darwin/src/NSExpression+MGLAdditions.mm | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/platform/darwin/src/NSExpression+MGLAdditions.mm b/platform/darwin/src/NSExpression+MGLAdditions.mm index 633f433a8f..7881b79370 100644 --- a/platform/darwin/src/NSExpression+MGLAdditions.mm +++ b/platform/darwin/src/NSExpression+MGLAdditions.mm @@ -1097,7 +1097,22 @@ NSArray *MGLSubexpressionsWithJSONObjects(NSArray *objects) { NSArray *arguments = self.arguments.mgl_jsonExpressionObject; return [@[@"concat", self.operand.mgl_jsonExpressionObject] arrayByAddingObjectsFromArray:arguments]; } else if ([function isEqualToString:@"objectFrom:withIndex:"]) { - return @[@"at", self.arguments[1].mgl_jsonExpressionObject, self.arguments[0].mgl_jsonExpressionObject]; + id index = self.arguments[1].mgl_jsonExpressionObject; + + if ([self.arguments[1] expressionType] == NSConstantValueExpressionType + && [[self.arguments[1] constantValue] isKindOfClass:[NSString class]]) { + id value = self.arguments[1].constantValue; + + if ([value isEqualToString:@"FIRST"]) { + index = [NSExpression expressionForConstantValue:@0].mgl_jsonExpressionObject; + } else if ([value isEqualToString:@"LAST"]) { + index = [NSExpression expressionWithFormat:@"count(%@) - 1", self.arguments[0]].mgl_jsonExpressionObject; + } else if ([value isEqualToString:@"SIZE"]) { + return [NSExpression expressionWithFormat:@"count(%@)", self.arguments[0]].mgl_jsonExpressionObject; + } + } + + return @[@"at", index, self.arguments[0].mgl_jsonExpressionObject]; } else if ([function isEqualToString:@"boolValue"]) { return @[@"to-boolean", self.operand.mgl_jsonExpressionObject]; } else if ([function isEqualToString:@"mgl_number"] || |