bridge.hxx

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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#pragma once
 
#include <sal/config.h>
 
#include <atomic>
#include <cstddef>
 
#include <sal/types.h>
#include <typelib/typedescription.h>
#include <uno/environment.h>
#include <uno/mapping.h>
 
namespace bridges::cpp_uno::shared {
 
// private:
extern "C" void freeMapping(uno_Mapping *);
 
// private:
extern "C" void acquireMapping(uno_Mapping *);
 
// private:
extern "C" void releaseMapping(uno_Mapping *);
 
// private:
extern "C" void cpp2unoMapping(
    uno_Mapping *, void **, void *, typelib_InterfaceTypeDescription *);
 
// private:
extern "C" void uno2cppMapping(
    uno_Mapping *, void **, void *, typelib_InterfaceTypeDescription *);
 
class Bridge {
public:
    // Interface for generic/component.cxx:
 
    static uno_Mapping * createMapping(
        uno_ExtEnvironment * pCppEnv, uno_ExtEnvironment * pUnoEnv,
        bool bExportCpp2Uno);
 
    // Interface for Cpp/UnoInterfaceProxy:
 
    void acquire();
    void release();
 
    // Interface for individual CPP--UNO bridges:
 
    uno_ExtEnvironment * getCppEnv() { return pCppEnv; }
    uno_ExtEnvironment * getUnoEnv() { return pUnoEnv; }
 
    uno_Mapping * getCpp2Uno() { return &aCpp2Uno; }
    uno_Mapping * getUno2Cpp() { return &aUno2Cpp; }
 
private:
    Bridge(Bridge const &) = delete;
    Bridge& operator =(const Bridge&) = delete;
 
    Bridge(
        uno_ExtEnvironment * pCppEnv_, uno_ExtEnvironment * pUnoEnv_,
        bool bExportCpp2Uno_);
 
    ~Bridge();
 
    struct Mapping: public uno_Mapping {
        Bridge * pBridge;
    };
 
    std::atomic<std::size_t> nRef;
 
    uno_ExtEnvironment * pCppEnv;
    uno_ExtEnvironment * pUnoEnv;
 
    Mapping aCpp2Uno;
    Mapping aUno2Cpp;
 
    bool bExportCpp2Uno;
 
    friend void freeMapping(uno_Mapping * pMapping);
 
    friend void acquireMapping(uno_Mapping * pMapping);
 
    friend void releaseMapping(uno_Mapping * pMapping);
 
    friend void cpp2unoMapping(
        uno_Mapping * pMapping, void ** ppUnoI, void * pCppI,
        typelib_InterfaceTypeDescription * pTypeDescr);
 
    friend void uno2cppMapping(
        uno_Mapping * pMapping, void ** ppCppI, void * pUnoI,
        typelib_InterfaceTypeDescription * pTypeDescr);
};
 
}
 
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