1 files changed, 44 insertions, 0 deletions
diff --git a/platform/darwin/src/MGLAttributedExpression.h b/platform/darwin/src/MGLAttributedExpression.h
new file mode 100644
index 0000000000..aa5d51c66e
--- /dev/null
+++ b/platform/darwin/src/MGLAttributedExpression.h
@@ -0,0 +1,44 @@
+#import "MGLFoundation.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NSString * MGLAttributedExpressionKey NS_EXTENSIBLE_STRING_ENUM;
+
+FOUNDATION_EXTERN MGL_EXPORT MGLAttributedExpressionKey const MGLFontNamesAttribute;
+FOUNDATION_EXTERN MGL_EXPORT MGLAttributedExpressionKey const MGLFontSizeAttribute;
+
+/**
+ An `MGLAttributedExpression` object associates text formatting attibutes (such as font size or
+ font names) to an `NSExpression`.
+ */
+MGL_EXPORT
+@interface MGLAttributedExpression : NSObject
+
+/**
+ The expression content of the receiver as `NSExpression`.
+ */
+@property (strong, nonatomic) NSExpression *expression;
+
+/**
+ The formatting attributes.
+ */
+@property (strong, nonatomic, readonly) NSDictionary<MGLAttributedExpressionKey, id> *attributes;
+
+/**
+ Returns an `MGLAttributedExpression` object initialized with an expression and no attribute information.
+ */
+- (instancetype)initWithExpression:(NSExpression *)expression;
+
+/** 
+ Returns an `MGLAttributedExpression` object initialized with an expression and text format attributes.
+ */
+- (instancetype)initWithExpression:(NSExpression *)expression attributes:(nullable NSDictionary <MGLAttributedExpressionKey, id> *)attrs;
+
+/**
+ Creates an `MGLAttributedExpression` object initialized with an expression and the format attributes for font names and font size.
+ */
++ (instancetype)attributedExpression:(NSExpression *)expression fontNames:(nullable NSArray<NSString*> *)fontNames fontSize:(nullable NSNumber *)fontSize;
+
+@end
+
+NS_ASSUME_NONNULL_END