/*
* Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#import "OFObject.h"
#import "OFXMLParser.h"
OF_ASSUME_NONNULL_BEGIN
@class OFMutableArray OF_GENERIC(ObjectType);
@class OFXMLElement;
@class OFXMLElementBuilder;
/**
* @protocol OFXMLElementBuilderDelegate
* OFXMLElementBuilder.h ObjFW/OFXMLElementBuilder.h
*
* @brief A protocol that needs to be implemented by delegates for
* OFXMLElementBuilder.
*/
@protocol OFXMLElementBuilderDelegate <OFObject>
/**
* @brief This callback is called when the OFXMLElementBuilder built an element.
*
* If the OFXMLElementBuilder was used as a delegate for the OFXMLParser since
* parsing started, this will return the complete document as an OFXMLElement
* with all children.
*
* @param builder The builder which built an OFXMLElement
* @param element The OFXMLElement the OFXMLElementBuilder built
*/
- (void)elementBuilder: (OFXMLElementBuilder *)builder
didBuildElement: (OFXMLElement *)element;
@optional
/**
* @brief This callback is called when the OFXMLElementBuilder built an
* OFXMLNode which is not inside an element.
*
* This is usually called for comments or whitespace character data before the
* root element.
*
* @param builder The builder which built the OFXMLNode without parent
* @param node The OFXMLNode the OFXMLElementBuilder built
*/
- (void)elementBuilder: (OFXMLElementBuilder *)builder
didBuildParentlessNode: (OFXMLNode *)node;
/**
* @brief This callback is called when the OFXMLElementBuilder gets a close tag
* which does not belong there.
*
* Most likely, the OFXMLElementBuilder was used to build XML only of a child
* of the root element and the root element was closed. Often the delegate is
* set to the OFXMLElementBuilder when a certain element is found, this can be
* used then to set the delegate back after that certain element has been
* closed.
*
* If this method is not implemented in the delegate, the default is to throw
* an OFMalformedXMLException.
*
* @param builder The builder which did not expect the close tag
* @param name The name of the close tag
* @param prefix The prefix of the close tag
* @param namespace_ The namespace of the close tag
*/
- (void)elementBuilder: (OFXMLElementBuilder *)builder
didNotExpectCloseTag: (OFString *)name
prefix: (nullable OFString *)prefix
namespace: (nullable OFString *)namespace_;
/**
* @brief This callback is called when the XML parser for the element builder
* found an unknown entity.
*
* @param builder The element builder which found an unknown entity
* @param entity The name of the entity
* @return The substitution for the entity
*/
- (OFString *)elementBuilder: (OFXMLElementBuilder *)builder
foundUnknownEntityNamed: (OFString *)entity;
@end
/**
* @class OFXMLElementBuilder OFXMLElementBuilder.h ObjFW/OFXMLElementBuilder.h
*
* @brief A class implementing the OFXMLParserDelegate protocol that can build
* OFXMLElements from the document parsed by the OFXMLParser.
*
* It can also be used to build OFXMLElements from parts of the document by
* first parsing stuff using the OFXMLParser with another delegate and then
* setting the OFXMLElementBuilder as delegate for the parser.
*/
@interface OFXMLElementBuilder: OFObject <OFXMLParserDelegate>
{
OFMutableArray OF_GENERIC(OFXMLElement *) *_stack;
id <OFXMLElementBuilderDelegate> _Nullable _delegate;
OF_RESERVE_IVARS(OFXMLElementBuilder, 4)
}
/**
* @brief The delegate for the OFXMLElementBuilder.
*/
@property OF_NULLABLE_PROPERTY (assign, nonatomic)
id <OFXMLElementBuilderDelegate> delegate;
/**
* @brief Creates a new element builder.
*
* @return A new, autoreleased OFXMLElementBuilder
*/
+ (instancetype)elementBuilder;
@end
OF_ASSUME_NONNULL_END