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#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
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