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#ifndef __XMPIterator_hpp__
#define __XMPIterator_hpp__
// =================================================================================================
// Copyright 2020 Adobe
// All Rights Reserved.
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance with the terms
// of the Adobe license agreement accompanying it.
// =================================================================================================
#include "public/include/XMP_Environment.h"
#include "public/include/XMP_Const.h"
#include "XMPCore/source/XMPMeta.hpp"
// =================================================================================================
struct IterNode;
typedef std::vector < IterNode > IterOffspring;
typedef IterOffspring::iterator IterPos;
typedef std::pair < IterPos, IterPos > IterPosPair;
typedef std::vector < IterPosPair > IterPosStack;
enum { // Values for the visitStage field, used to decide how to proceed past a node.
kIter_BeforeVisit = 0, // Have not visited this node at all.
kIter_VisitSelf = 1, // Have visited this node and returned its value/options portion.
kIter_VisitQualifiers = 2, // In the midst of visiting this node's qualifiers.
kIter_VisitChildren = 3 // In the midst of visiting this node's children.
};
struct IterNode {
XMP_OptionBits options;
XMP_VarString fullPath;
size_t leafOffset;
IterOffspring children, qualifiers;
XMP_Uns8 visitStage;
#if 0 // *** XMP_DebugBuild
XMP_StringPtr _pathPtr, _leafPtr; // *** Not working, need operator=?
#endif
IterNode() : options(0), leafOffset(0), visitStage(kIter_BeforeVisit)
{
#if 0 // *** XMP_DebugBuild
_pathPtr = _leafPtr = 0;
#endif
};
IterNode ( XMP_OptionBits _options, const XMP_VarString& _fullPath, size_t _leafOffset )
: options(_options), fullPath(_fullPath), leafOffset(_leafOffset), visitStage(kIter_BeforeVisit)
{
#if 0 // *** XMP_DebugBuild
_pathPtr = fullPath.c_str();
_leafPtr = _pathPtr + leafOffset;
#endif
};
};
struct IterInfo {
XMP_OptionBits options;
const XMPMeta * xmpObj;
XMP_VarString currSchema;
IterPos currPos, endPos;
IterPosStack ancestors;
IterNode tree;
#if 0 // *** XMP_DebugBuild
XMP_StringPtr _schemaPtr; // *** Not working, need operator=?
#endif
IterInfo() : options(0), xmpObj(0)
{
#if 0 // *** XMP_DebugBuild
_schemaPtr = 0;
#endif
};
IterInfo ( XMP_OptionBits _options, const XMPMeta * _xmpObj ) : options(_options), xmpObj(_xmpObj)
{
#if 0 // *** XMP_DebugBuild
_schemaPtr = 0;
#endif
};
};
// =================================================================================================
class XMPIterator {
public:
static bool
Initialize(); // ! For internal use only!
static void
Terminate() RELEASE_NO_THROW; // ! For internal use only!
XMPIterator ( const XMPMeta & xmpObj, // Construct a property iterator.
XMP_StringPtr schemaNS,
XMP_StringPtr propName,
XMP_OptionBits options );
XMPIterator ( XMP_StringPtr schemaNS, // Construct a table iterator.
XMP_StringPtr propName,
XMP_OptionBits options );
virtual ~XMPIterator() RELEASE_NO_THROW;
virtual bool
Next ( XMP_StringPtr * schemaNS,
XMP_StringLen * nsSize,
XMP_StringPtr * propPath,
XMP_StringLen * pathSize,
XMP_StringPtr * propValue,
XMP_StringLen * valueSize,
XMP_OptionBits * propOptions );
virtual void
Skip ( XMP_OptionBits options );
// ! Expose so that wrappers and file static functions can see the data.
XMP_Int32 clientRefs; // ! Must be signed to allow decrement from 0.
XMP_ReadWriteLock lock;
IterInfo info;
private:
// ! These are hidden on purpose:
XMPIterator() : clientRefs(0)
{ XMP_Throw ( "Call to hidden constructor", kXMPErr_InternalFailure ); };
XMPIterator ( const XMPIterator & /* original */ ) : clientRefs(0)
{ XMP_Throw ( "Call to hidden constructor", kXMPErr_InternalFailure ); };
void operator= ( const XMPIterator & /* rhs */ )
{ XMP_Throw ( "Call to hidden operator=", kXMPErr_InternalFailure ); };
};
// =================================================================================================
#endif // __XMPIterator_hpp__
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