85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
/*
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* Copyright (c) 2001-2008
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* DecisionSoft Limited. All rights reserved.
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* Copyright (c) 2004-2008
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* Oracle. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Id: FunctionLookup.hpp,v 1.18 2008/01/11 15:48:49 jpcs Exp $
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*/
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#ifndef _FLOOKUP_HPP
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#define _FLOOKUP_HPP
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#include <xqilla/framework/XQillaExport.hpp>
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#include <vector>
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#include <xercesc/util/XercesDefs.hpp>
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#include <xercesc/util/RefHash2KeysTableOf.hpp>
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#include <xqilla/ast/ASTNode.hpp>
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class FuncFactory;
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class XPath2MemoryManager;
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class ExternalFunction;
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class DynamicContext;
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class XQILLA_API FunctionLookup
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{
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public:
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FunctionLookup(XPath2MemoryManager* memMgr);
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~FunctionLookup();
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///adds a function to the custom function table
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void insertFunction(FuncFactory *func);
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/// replaces the implementation of an existing function
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void replaceFunction(FuncFactory *func);
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///returns the approriate Function object
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ASTNode* lookUpFunction(const XMLCh* URI, const XMLCh* fname,
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const VectorOfASTNodes &args,
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XPath2MemoryManager* memMgr) const;
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///adds a function to the external function table
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void insertExternalFunction(const ExternalFunction *func);
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///returns the approriate ExternalFunction object
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const ExternalFunction *lookUpExternalFunction(const XMLCh* URI,
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const XMLCh* fname,
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size_t numArgs) const;
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void copyExternalFunctionsTo(DynamicContext *context) const;
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void insertUpdateFunctions(XPath2MemoryManager *memMgr);
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private:
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XERCES_CPP_NAMESPACE_QUALIFIER RefHash2KeysTableOf< FuncFactory > _funcTable;
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XERCES_CPP_NAMESPACE_QUALIFIER RefHash2KeysTableOf< const ExternalFunction > _exFuncTable;
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public:
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// static (global table interfaces)
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static void insertGlobalFunction(FuncFactory *func);
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static void insertGlobalExternalFunction(const ExternalFunction *func);
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// next two look in global table first, then the contextTable
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static ASTNode* lookUpGlobalFunction(const XMLCh* URI, const XMLCh* fname,
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const VectorOfASTNodes &args,
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XPath2MemoryManager* memMgr,
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const FunctionLookup *contextTable);
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static const ExternalFunction *lookUpGlobalExternalFunction(
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const XMLCh* URI, const XMLCh* fname, size_t numArgs,
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const FunctionLookup *contextTable);
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static void initialize();
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static void terminate();
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private:
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static FunctionLookup *g_globalFunctionTable;
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static XPath2MemoryManager *g_memMgr;
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};
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#endif
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