iska
91 lines
2.1 KiB
Objective-C
91 lines
2.1 KiB
Objective-C
//
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// HTMLSelector.h
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// HTMLKit
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//
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// Created by Iska on 02/05/15.
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// Copyright (c) 2015 BrainCookie. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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NS_ASSUME_NONNULL_BEGIN
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#pragma mark - Attribute Selector Type
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/**
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Attribute selector type.
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*/
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typedef NS_ENUM(NSUInteger, CSSAttributeSelectorType)
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{
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/** Attribute exists: '[src]' */
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CSSAttributeSelectorExists,
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/** Attribute has exact value: '[title="HTMLKit"]' */
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CSSAttributeSelectorExactMatch,
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/** Attribute includes value: '[title~="foo"]' */
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CSSAttributeSelectorIncludes,
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/** Attribute's value begins with: '[title^="HTML"]' */
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CSSAttributeSelectorBegins,
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/** Attribute's value ends with: '[title$="Kit"]' */
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CSSAttributeSelectorEnds,
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/** Attribute's value ends with: '[title*="ML"]' */
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CSSAttributeSelectorContains,
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/** Attribute's value ends with: '[title|="en"]' */
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CSSAttributeSelectorHyphen,
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/** Attribute's value does not equal: '[title!="foo"]' */
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CSSAttributeSelectorNot
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};
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#pragma mark - CSS Nth-Expression
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/**
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CSS Nth-Expression
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*/
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typedef struct CSSNthExpression
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{
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NSInteger an;
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NSInteger b;
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} CSSNthExpression;
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NS_INLINE CSSNthExpression CSSNthExpressionMake(NSInteger an, NSInteger b) {
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return (CSSNthExpression){ .an = an, .b = b };
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}
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extern const CSSNthExpression CSSNthExpressionOdd;
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extern const CSSNthExpression CSSNthExpressionEven;
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extern NSString * _Nonnull NSStringFromNthExpression(CSSNthExpression expression);
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#pragma mark - Base Selector Class
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@class HTMLElement;
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/**
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Base class for all CSS Selector implementations
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*/
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@interface CSSSelector : NSObject
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/**
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Initializes and returns a new instance of CSS Selector.
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@param string The selector string which will be parsed.
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@return A new instance of a parsed CSS Selector, `nil` if the string is not a valid selector string.
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*/
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+ (nullable instancetype)selectorWithString:(NSString *)string;
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/**
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Implementations should override this method to provide the selector-sprecific logic for matching elements.
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@abstract Use one of the concrete subclasses.
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*/
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- (BOOL)acceptElement:(HTMLElement *)element;
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@end
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NS_ASSUME_NONNULL_END
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