XQuilla/include/xqilla/functions/FunctionSubsequence.hpp

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/*
* Copyright (c) 2001-2006
* DecisionSoft Limited. All rights reserved.
* Copyright (c) 2004-2006
* Progress Software Corporation. All rights reserved.
* Copyright (c) 2004-2006
* Oracle. All rights reserved.
*
* See the file LICENSE for redistribution information.
*
* $Id: FunctionSubsequence.hpp,v 1.11 2006/11/01 16:37:13 jpcs Exp $
*/
#ifndef _FUNCTIONSUBSEQUENCE_HPP
#define _FUNCTIONSUBSEQUENCE_HPP
#include <xqilla/framework/XQillaExport.hpp>
#include <xqilla/ast/ConstantFoldingFunction.hpp>
class XQILLA_API FunctionSubsequence : public ConstantFoldingFunction
{
public:
static const XMLCh name[];
static const unsigned int minArgs;
static const unsigned int maxArgs;
FunctionSubsequence(const VectorOfASTNodes &args, XPath2MemoryManager* memMgr);
ASTNode* staticResolution(StaticContext *context);
virtual ASTNode *staticTyping(StaticContext *context);
Result createResult(DynamicContext* context, int flags=0) const;
private:
class SubsequenceResult : public ResultImpl
{
public:
SubsequenceResult(const FunctionSubsequence *func, int flags);
Item::Ptr next(DynamicContext *context);
std::string asString(DynamicContext *context, int indent) const;
private:
int _flags;
const FunctionSubsequence *_func;
Numeric::Ptr _end;
Numeric::Ptr _one;
Numeric::Ptr _i;
Result _source;
};
};
#endif // _FUNCTIONSUBSEQUENCE_HPP