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gave up trying to be clever. split the handles into 2 classes.

This commit is contained in:
Lee Thomason 2012-04-04 15:58:16 -07:00
parent db0bbb60a1 5761203084
commit 8b89981989
2 changed files with 47 additions and 36 deletions
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59
tinyxml2.h
View File

@ -1188,54 +1188,65 @@ class XMLHandle
public:
/// Create a handle from any node (at any depth of the tree.) This can be a null pointer.
XMLHandle( XMLNode* _node ) { node = _node; }
//XMLHandle( const XMLNode* _node ) { node = const_cast<XMLNode*>(_node); }
XMLHandle( XMLNode& _node ) { node = &_node; }
//XMLHandle( const XMLNode& _node ) { node = const_cast<XMLNode*>(&_node); }
XMLHandle( const XMLHandle& ref ) { node = ref.node; }
XMLHandle operator=( XMLHandle ref ) { node = ref.node; return *this; }
XMLHandle FirstChild() { return XMLHandle( node ? node->FirstChild() : static_cast<XMLNode*>(0) ); }
const XMLHandle FirstChild() const { return XMLHandle( node ? node->FirstChild() : 0 ); }
XMLHandle operator=( const XMLHandle& ref ) { node = ref.node; return *this; }
XMLHandle FirstChild() { return XMLHandle( node ? node->FirstChild() : 0 ); }
XMLHandle FirstChildElement( const char* value=0 ) { return XMLHandle( node ? node->FirstChildElement( value ) : 0 ); }
const XMLHandle FirstChildElement( const char* value=0 ) const { return XMLHandle( node ? node->FirstChildElement( value ) : 0 ); }
XMLHandle LastChild() { return XMLHandle( node ? node->LastChild() : 0 ); }
const XMLHandle LastChild() const { return XMLHandle( node ? node->LastChild() : 0 ); }
XMLHandle LastChildElement( const char* _value=0 ) { return XMLHandle( node ? node->LastChildElement( _value ) : 0 ); }
const XMLHandle LastChildElement( const char* _value=0 ) const { return XMLHandle( node ? node->LastChildElement( _value ) : 0 ); }
XMLHandle PreviousSibling() { return XMLHandle( node ? node->PreviousSibling() : 0 ); }
const XMLHandle PreviousSibling() const { return XMLHandle( node ? node->PreviousSibling() : 0 ); }
XMLHandle PreviousSiblingElement( const char* _value=0 ) { return XMLHandle( node ? node->PreviousSiblingElement( _value ) : 0 ); }
const XMLHandle PreviousSiblingElement( const char* _value=0 ) const { return XMLHandle( node ? node->PreviousSiblingElement( _value ) : 0 ); }
XMLHandle NextSibling() { return XMLHandle( node ? node->NextSibling() : 0 ); }
const XMLHandle NextSibling() const { return XMLHandle( node ? node->NextSibling() : 0 ); }
XMLHandle NextSiblingElement( const char* _value=0 ) { return XMLHandle( node ? node->NextSiblingElement( _value ) : 0 ); }
const XMLHandle NextSiblingElement( const char* _value=0 ) const { return XMLHandle( node ? node->NextSiblingElement( _value ) : 0 ); }
XMLNode* ToNode() { return node; }
const XMLNode* ToNode() const { return node; }
XMLElement* ToElement() { return ( ( node && node->ToElement() ) ? node->ToElement() : 0 ); }
const XMLElement* ToElement() const { return ( ( node && node->ToElement() ) ? node->ToElement() : 0 ); }
XMLText* ToText() { return ( ( node && node->ToText() ) ? node->ToText() : 0 ); }
const XMLText* ToText() const { return ( ( node && node->ToText() ) ? node->ToText() : 0 ); }
XMLUnknown* ToUnknown() { return ( ( node && node->ToUnknown() ) ? node->ToUnknown() : 0 ); }
const XMLUnknown* ToUnknown() const { return ( ( node && node->ToUnknown() ) ? node->ToUnknown() : 0 ); }
XMLDeclaration* ToDeclaration() { return ( ( node && node->ToDeclaration() ) ? node->ToDeclaration() : 0 ); }
const XMLDeclaration* ToDeclaration() const { return ( ( node && node->ToDeclaration() ) ? node->ToDeclaration() : 0 ); }
private:
XMLNode* node;
};
/**
A variant of the XMLHandle class for working with const XMLNodes and Documents.
*/
class XMLConstHandle
{
public:
XMLConstHandle( const XMLNode* _node ) { node = _node; }
XMLConstHandle( const XMLNode& _node ) { node = &_node; }
XMLConstHandle( const XMLConstHandle& ref ) { node = ref.node; }
XMLConstHandle operator=( const XMLConstHandle& ref ) { node = ref.node; return *this; }
const XMLConstHandle FirstChild() const { return XMLConstHandle( node ? node->FirstChild() : 0 ); }
const XMLConstHandle FirstChildElement( const char* value=0 ) const { return XMLConstHandle( node ? node->FirstChildElement( value ) : 0 ); }
const XMLConstHandle LastChild() const { return XMLConstHandle( node ? node->LastChild() : 0 ); }
const XMLConstHandle LastChildElement( const char* _value=0 ) const { return XMLConstHandle( node ? node->LastChildElement( _value ) : 0 ); }
const XMLConstHandle PreviousSibling() const { return XMLConstHandle( node ? node->PreviousSibling() : 0 ); }
const XMLConstHandle PreviousSiblingElement( const char* _value=0 ) const { return XMLConstHandle( node ? node->PreviousSiblingElement( _value ) : 0 ); }
const XMLConstHandle NextSibling() const { return XMLConstHandle( node ? node->NextSibling() : 0 ); }
const XMLConstHandle NextSiblingElement( const char* _value=0 ) const { return XMLConstHandle( node ? node->NextSiblingElement( _value ) : 0 ); }
const XMLNode* ToNode() const { return node; }
const XMLElement* ToElement() const { return ( ( node && node->ToElement() ) ? node->ToElement() : 0 ); }
const XMLText* ToText() const { return ( ( node && node->ToText() ) ? node->ToText() : 0 ); }
const XMLUnknown* ToUnknown() const { return ( ( node && node->ToUnknown() ) ? node->ToUnknown() : 0 ); }
const XMLDeclaration* ToDeclaration() const { return ( ( node && node->ToDeclaration() ) ? node->ToDeclaration() : 0 ); }
private:
const XMLNode* node;
};
/**
Printing functionality. The XMLPrinter gives you more
options than the XMLDocument::Print() method.

4
xmltest.cpp
View File

@ -736,8 +736,8 @@ int main( int /*argc*/, const char ** /*argv*/ )
XMLElement* ele = XMLHandle( doc ).FirstChildElement( "element" ).FirstChild().ToElement();
XMLTest( "Handle, success, mutable", ele->Value(), "sub" );
const XMLElement* eleC = XMLHandle( docC ).FirstChildElement( "element" ).FirstChild().ToElement();
XMLTest( "Handle, success, mutable", ele->Value(), "sub" );
const XMLElement* eleC = XMLConstHandle( docC ).FirstChildElement( "element" ).FirstChild().ToElement();
XMLTest( "Handle, success, mutable", eleC->Value(), "sub" );
}