WireReader.h

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/*
 * Copyright (C) 2006-2020 Istituto Italiano di Tecnologia (IIT)
 * All rights reserved.
 *
 * This software may be modified and distributed under the terms of the
 * BSD-3-Clause license. See the accompanying LICENSE file for details.
 */
 
#ifndef YARP_OS_IDL_WIREREADER_H
#define YARP_OS_IDL_WIREREADER_H
 
#include <yarp/conf/numeric.h>
 
#include <yarp/os/Bottle.h>
#include <yarp/os/NullConnectionReader.h>
#include <yarp/os/NullConnectionWriter.h>
#include <yarp/os/Vocab.h>
#include <yarp/os/idl/WirePortable.h>
#include <yarp/os/idl/WireState.h>
#include <yarp/os/idl/WireVocab.h>
 
#include <string>
 
namespace yarp {
namespace os {
namespace idl {
 
class YARP_os_API WireReader
{
public:
    WireReader(ConnectionReader& reader);
 
    ~WireReader();
 
    void expectAccept();
 
    void accept();
 
    void allowGetMode();
 
    bool clear();
 
    void fail();
 
    bool read(WirePortable& obj);
 
    bool read(yarp::os::PortReader& obj);
 
    bool readNested(WirePortable& obj);
 
    bool readNested(yarp::os::PortReader& obj);
 
    bool readBool(bool& x);
 
    bool readI8(std::int8_t& x);
 
    bool readI16(std::int16_t& x);
 
    bool readI32(std::int32_t& x);
 
    bool readI64(std::int64_t& x);
 
    bool readFloat32(yarp::conf::float32_t& x);
 
    bool readFloat64(yarp::conf::float64_t& x);
 
    bool readVocab(std::int32_t& x);
 
#ifndef YARP_NO_DEPRECATED // Since YARP 3.0.0
    YARP_DEPRECATED_MSG("Use readI8 instead")
    bool readByte(std::int8_t& x)
    {
        return readI8(x);
    }
 
    YARP_DEPRECATED_MSG("Use readFloat64 instead")
    bool readDouble(double& x)
    {
        return readFloat64(x);
    }
#endif // YARP_NO_DEPRECATED
 
    std::int8_t expectInt8()
    {
        std::int8_t x;
        readI8(x);
        return x;
    }
    std::int16_t expectInt16()
    {
        std::int16_t x;
        readI16(x);
        return x;
    }
    std::int32_t expectInt32()
    {
        std::int32_t x;
        readI32(x);
        return x;
    }
 
    std::int64_t expectInt64()
    {
        std::int64_t x;
        readI64(x);
        return x;
    }
 
    yarp::conf::float32_t expectFloat32()
    {
        yarp::conf::float32_t x;
        readFloat32(x);
        return x;
    }
 
    yarp::conf::float64_t expectFloat64()
    {
        yarp::conf::float64_t x;
        readFloat64(x);
        return x;
    }
 
#ifndef YARP_NO_DEPRECATED // Since YARP 3.0.0
    YARP_DEPRECATED_MSG("Use expectInt32 instead")
    int expectInt()
    {
        return static_cast<int>(expectInt32());
    }
 
    YARP_DEPRECATED_MSG("Use expectFloat64 instead")
    double expectDouble()
    {
        return static_cast<double>(expectFloat64());
    }
#endif // YARP_NO_DEPRECATED
 
    bool readString(std::string& str, bool* is_vocab = nullptr);
 
    bool readBinary(std::string& str);
 
    bool readEnum(std::int32_t& x, yarp::os::idl::WireVocab& converter);
 
    bool readListHeader();
 
    bool readListHeader(int len);
 
    bool readListReturn();
 
    int getLength() const
    {
        return state->len;
    }
 
    ConnectionWriter& getWriter();
 
    bool isValid();
 
    bool isError();
 
    std::string readTag();
 
    void readListBegin(yarp::os::idl::WireState& nstate, std::uint32_t& len);
 
    void readSetBegin(yarp::os::idl::WireState& nstate, std::uint32_t& len);
 
    void readMapBegin(yarp::os::idl::WireState& nstate, yarp::os::idl::WireState& nstate2, std::uint32_t& len);
 
    void readListEnd();
 
    void readSetEnd();
 
    void readMapEnd();
 
    bool noMore();
 
    bool getMode() const;
 
    bool getIsVocab() const;
 
    const std::string& getString() const;
 
private:
    NullConnectionWriter null_writer;
    ConnectionReader& reader;
    WireState baseState;
    WireState* state;
    bool flush_if_needed;
    bool support_get_mode;
    bool expecting;
    bool get_is_vocab;
    YARP_SUPPRESS_DLL_INTERFACE_WARNING_ARG(std::string) get_string;
    bool get_mode;
 
 
    void scanString(std::string& str, bool is_vocab);
};
 
} // namespace idl
} // namespace os
} // namespace yarp
 
 
#endif // YARP_OS_IDL_WIREREADER_H