Message.h

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// Copyright Onix Solutions Limited [OnixS]. All rights reserved.
//
// This software owned by Onix Solutions Limited [OnixS] and is
// protected by copyright law and international copyright treaties.
//
// Access to and use of the software is governed by the terms of the applicable
// OnixS Software Services Agreement (the Agreement) and Customer end user license
// agreements granting a non-assignable, non-transferable and non-exclusive license
// to use the software for it's own data processing purposes under the terms defined
// in the Agreement.
//
// Except as otherwise granted within the terms of the Agreement, copying or
// reproduction of any part of this source code or associated reference material
// to any other location for further reproduction or redistribution, and any
// amendments to this copyright notice, are expressly prohibited.
//
// Any reproduction or redistribution for sale or hiring of the Software not in
// accordance with the terms of the Agreement is a violation of copyright law.
//
 
#pragma once
 
#include <OnixS/CME/MDH/messaging/SbeMessage.h>
#include <OnixS/CME/MDH/messaging/TagBased/Field.h>
#include <OnixS/CME/MDH/messaging/TagBased/Tag.h>
 
#include <cstdlib>
 
ONIXS_CMEMDH_MESSAGING_TAGBASED_NAMESPACE_BEGIN

struct ONIXS_CMEMDH_EXPORTED FieldAccessor
{
    virtual Field field(const BinaryBlockBase&, Tag) const noexcept = 0;

    virtual void setField(BinaryBlockBase&, Tag, const Field&) const = 0;

    virtual void resetField(BinaryBlockBase&, Tag) const = 0;

    virtual void reset(BinaryBlockBase&) const noexcept = 0;
 
protected:
    ~FieldAccessor() = default;
};

struct ONIXS_CMEMDH_EXPORTED FieldSet
{
    explicit operator bool() const noexcept
    {
        return (nullptr != accessor_);
    }

    FieldSet& reset() noexcept
    {
        accessor_->reset(binary_);
 
        return *this;
    }

    ONIXS_CMEMDH_NODISCARD Field field(Tag tag) const noexcept
    {
        assert(accessor_);
 
        return accessor_->field(binary_, tag);
    }

    FieldSet& setField(Tag tag, const Field& field)
    {
        assert(accessor_);
        assert(field);
 
        accessor_->setField(binary_, tag, field);
 
        return *this;
    }

    FieldSet& resetField(Tag tag)
    {
        assert(accessor_);
 
        accessor_->resetField(binary_, tag);
 
        return *this;
    }

    ONIXS_CMEMDH_NODISCARD Field operator[](Tag tag) const noexcept
    {
        return this->field(tag);
    }

    ONIXS_CMEMDH_NODISCARD bool contain(Tag tag) const noexcept;

    ONIXS_CMEMDH_NODISCARD Char getChar(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD Int64 getInt64(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD UInt64 getUInt64(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD Int32 getInt32(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD UInt32 getUInt32(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD Int16 getInt16(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD UInt16 getUInt16(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD Int8 getInt8(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD UInt8 getUInt8(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD Decimal getDecimal(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD StrRef getStringRef(Tag tag) const;

    ONIXS_CMEMDH_NODISCARD Timestamp getTimestamp(Tag tag) const;

    MaturityMonthYear getMaturityMonthYear(Tag tag) const;

    template <typename Enumeration>
    ONIXS_CMEMDH_NODISCARD typename Enumeration::Enum getEnumeration(Tag tag) const
    {
        return field(tag).cast<Enumeration>();
    }

    template <typename BitSet>
    ONIXS_CMEMDH_NODISCARD BitSet getBitSet(Tag tag) const
    {
        return BitSet(field(tag).cast<typename BitSet::Bits>());
    }

    FieldSet& set(Tag tag, const Field& field)
    {
        return setField(tag, field);
    }

    template <typename BitSet>
    FieldSet& set(Tag tag, BitSet value, typename BitSet::Bits* = nullptr)
    {
        return set(tag, value.bits());
    }

    FieldSet& set(Tag tag, Char value);

    FieldSet& set(Tag tag, UInt64 value);

    FieldSet& set(Tag tag, Int64 value);

    FieldSet& set(Tag tag, UInt32 value);

    FieldSet& set(Tag tag, Int32 value);

    FieldSet& set(Tag tag, UInt16 value);

    FieldSet& set(Tag tag, Int16 value);

    FieldSet& set(Tag tag, UInt8 value);

    FieldSet& set(Tag tag, Int8 value);

    FieldSet& set(Tag tag, const Decimal& value);

    FieldSet& set(Tag tag, StrRef value);

    FieldSet& set(Tag tag, Timestamp value);

    FieldSet& set(Tag tag, const MaturityMonthYear& value);
 
    ~FieldSet() = default;
 
protected:
    FieldSet(BinaryBlockBase& binary, const FieldAccessor* accessor) noexcept
        : binary_(binary)
        , accessor_(accessor)
    {
    }

    const FieldAccessor* accessor() const noexcept
    {
        return accessor_;
    }

    void setAccessor(const FieldAccessor* obj) noexcept
    {
        accessor_ = obj;
    }
 
private:
    BinaryBlockBase& binary_;
    const FieldAccessor* accessor_;
};
 
typedef SbeGroupEntry<MessageSize> GroupEntrySource;

struct ONIXS_CMEMDH_EXPORTED GroupEntryAccessor : public FieldAccessor
{
    ~GroupEntryAccessor() = default;
};

class GroupEntry : public FieldSet
{
public:
    GroupEntry() noexcept
        : FieldSet(binary_, nullptr)
        , binary_()
    {
    }

    GroupEntry(const GroupEntry& r) noexcept
        : FieldSet(binary_, r.accessor())
        , binary_(r.binary_)
    {
    }

    GroupEntry& operator=(const GroupEntry& r) noexcept
    {
        setAccessor(r.accessor());
        this->binary_ = r.binary_;
 
        return *this;
    }
 
protected:
    friend ONIXS_CMEMDH_LTWT_CLASS_DECL(Group);

    GroupEntry(const GroupEntrySource& binary, const GroupEntryAccessor& accessor) noexcept
        : FieldSet(binary_, &accessor)
        , binary_(binary)
    {
    }
 
private:
    GroupEntrySource binary_;
};
 
typedef SbeGroupEntries<GroupEntrySource, MessageSize, MessageSize, MessageSize> GroupEntriesSource;

class Group
{
public:
    typedef GroupEntriesSource::Size Size;

    Group()
        : accessor_(nullptr)
    {
    }

    explicit operator bool() const noexcept
    {
        return (nullptr != accessor_);
    }

    Size size() const noexcept
    {
        return binary_.size();
    }

    GroupEntry operator[](Size index) const
    {
        assert(accessor_);
        assert(binary_.valid());
 
        return GroupEntry(binary_[index], *accessor_);
    }
 
protected:
    Group(const GroupEntriesSource& binary, const GroupEntryAccessor& accessor) noexcept
        : binary_(binary)
        , accessor_(&accessor)
    {
    }
 
private:
    GroupEntriesSource binary_;
    const GroupEntryAccessor* accessor_;
};

struct ONIXS_CMEMDH_EXPORTED MessageAccessor : public FieldAccessor
{
    virtual StrRef type() const noexcept = 0;

    virtual Group group(const SbeMessage&, Tag) const noexcept = 0;

    virtual Group group(SbeMessage&, Tag, MessageSize) const = 0;

    virtual MessageSize calculateBinarySize(const SbeMessage&) const noexcept = 0;

    virtual void toFix(std::string&, const SbeMessage&) const = 0;

    std::string toFix(const SbeMessage&, Char delimiter) const;
 
    ~MessageAccessor() = default;
};

class Message : public FieldSet
{
public:
    Message() noexcept
        : FieldSet(binary_, nullptr)
        , binary_()
    {
    }

    Message(const Message& r) noexcept
        : FieldSet(binary_, r.accessor())
        , binary_(r.binary_)
    {
    }

    Message& operator=(const Message& r) noexcept
    {
        setAccessor(r.accessor());
        this->binary_ = r.binary_;
 
        return *this;
    }

    StrRef type() const noexcept
    {
        return accessor()->type();
    }

    Group group(Tag tag) const noexcept
    {
        assert(binary_.valid());
 
        return accessor()->group(binary_, tag);
    }

    Group group(Tag tag, MessageSize size)
    {
        assert(binary_.valid());
 
        return accessor()->group(binary_, tag, size);
    }

    ONIXS_CMEMDH_NODISCARD StrRef getVarData(Tag tag) const
    {
        return field(tag).cast<StrRef>();
    }

    Message& setVarData(Tag tag, StrRef value)
    {
        set(tag, value);
 
        return *this;
    }

    ONIXS_CMEMDH_NODISCARD MessageSize calculateBinarySize() const noexcept
    {
        assert(binary_.valid());
 
        return accessor()->calculateBinarySize(binary_);
    }

    void toFix(std::string& str) const
    {
        accessor()->toFix(str, binary_);
    }

    ONIXS_CMEMDH_NODISCARD std::string toFix(Char delimiter = '\x1') const
    {
        return accessor()->toFix(binary_, delimiter);
    }

    ONIXS_CMEMDH_NODISCARD std::string toString() const
    {
        return accessor()->toFix(binary_, '|');
    }

    ONIXS_CMEMDH_NODISCARD SchemaVersion version() const
    {
        assert(accessor());
        assert(binary_.valid());
 
        return binary_.version();
    }

    ONIXS_CMEMDH_NODISCARD MessageTemplateId templateId() const
    {
        assert(accessor());
        assert(binary_.valid());
 
        return binary_.templateId();
    }
 
    ~Message() = default;
 
protected:
    Message(SbeMessage binary, const MessageAccessor& accessor) noexcept
        : FieldSet(binary_, &accessor)
        , binary_(binary)
    {
    }
 
private:
    const MessageAccessor* accessor() const noexcept
    {
        const FieldAccessor* const parentAccessor = FieldSet::accessor();
 
        assert(parentAccessor);
        assert(dynamic_cast<const MessageAccessor*>(parentAccessor));
 
        return static_cast<const MessageAccessor*>(parentAccessor);
    }
 
private:
    SbeMessage binary_;
};

inline void toStr(std::string& str, const Message& message)
{
    message.toFix(str);
}

inline std::string toStr(const Message& message)
{
    std::string str;
 
    toStr(str, message);
 
    return str;
}

inline std::ostream& operator<<(std::ostream& stream, const Message& msg)
{
    return stream << msg.toString();
}
 
ONIXS_CMEMDH_MESSAGING_TAGBASED_NAMESPACE_END