Serialization code improvements:

* Add generics to eliminate duplicate code in STHash
* Use generics in Serializer and callers

Builds/VisualStudio2013/RippleD.vcxproj

@@ -2590,6 +2590,13 @@
     <ClCompile Include="..\..\src\ripple\module\data\protocol\STAmountRound.cpp">
       <ExcludedFromBuild>True</ExcludedFromBuild>
     </ClCompile>
+    <ClInclude Include="..\..\src\ripple\module\data\protocol\STBitString.h">
+    </ClInclude>
+    <ClCompile Include="..\..\src\ripple\module\data\protocol\STInteger.cpp">
+      <ExcludedFromBuild>True</ExcludedFromBuild>
+    </ClCompile>
+    <ClInclude Include="..\..\src\ripple\module\data\protocol\STInteger.h">
+    </ClInclude>
     <ClCompile Include="..\..\src\ripple\module\data\protocol\STParsedJSON.cpp">
       <ExcludedFromBuild>True</ExcludedFromBuild>
     </ClCompile>

Builds/VisualStudio2013/RippleD.vcxproj.filters

@@ -3696,6 +3696,15 @@
     <ClCompile Include="..\..\src\ripple\module\data\protocol\STAmountRound.cpp">
       <Filter>ripple\module\data\protocol</Filter>
     </ClCompile>
+    <ClInclude Include="..\..\src\ripple\module\data\protocol\STBitString.h">
+      <Filter>ripple\module\data\protocol</Filter>
+    </ClInclude>
+    <ClCompile Include="..\..\src\ripple\module\data\protocol\STInteger.cpp">
+      <Filter>ripple\module\data\protocol</Filter>
+    </ClCompile>
+    <ClInclude Include="..\..\src\ripple\module\data\protocol\STInteger.h">
+      <Filter>ripple\module\data\protocol</Filter>
+    </ClInclude>
     <ClCompile Include="..\..\src\ripple\module\data\protocol\STParsedJSON.cpp">
       <Filter>ripple\module\data\protocol</Filter>
     </ClCompile>

src/ripple/module/data/protocol/STBitString.h

@@ -0,0 +1,137 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef RIPPLE_STBITS_H
+#define RIPPLE_STBITS_H
+
+#include <ripple/module/data/protocol/SerializedType.h>
+
+namespace ripple {
+
+template <std::size_t Bits>
+class STBitString : public SerializedType
+{
+public:
+    typedef base_uint<Bits> BitString;
+
+    STBitString ()                                    {}
+    STBitString (SField::ref n) : SerializedType (n)  {}
+    STBitString (const BitString& v) : bitString_ (v) {}
+
+    STBitString (SField::ref n, const BitString& v)
+            : SerializedType (n), bitString_ (v)
+    {
+    }
+
+    STBitString (SField::ref n, const char* v) : SerializedType (n)
+    {
+        bitString_.SetHex (v);
+    }
+
+    STBitString (SField::ref n, const std::string& v) : SerializedType (n)
+    {
+        bitString_.SetHex (v);
+    }
+
+    static std::unique_ptr<SerializedType> deserialize (
+        SerializerIterator& sit, SField::ref name)
+    {
+        return std::unique_ptr<SerializedType> (construct (sit, name));
+    }
+
+    SerializedTypeID getSType () const;
+
+    std::string getText () const
+    {
+        return to_string (bitString_);
+    }
+
+    bool isEquivalent (const SerializedType& t) const
+    {
+        const STBitString* v = dynamic_cast<const STBitString*> (&t);
+        return v && (bitString_ == v->bitString_);
+    }
+
+    void add (Serializer& s) const
+    {
+        assert (fName->isBinary ());
+        assert (fName->fieldType == getSType());
+        s.addBitString<Bits> (bitString_);
+    }
+
+    const BitString& getValue () const
+    {
+        return bitString_;
+    }
+
+    template <typename Tag>
+    void setValue (base_uint<Bits, Tag> const& v)
+    {
+        bitString_.copyFrom(v);
+    }
+
+    operator BitString () const
+    {
+        return bitString_;
+    }
+
+    virtual bool isDefault () const
+    {
+        return bitString_ == zero;
+    }
+
+private:
+    BitString bitString_;
+
+    STBitString* duplicate () const
+    {
+        return new STBitString (*this);
+    }
+
+    static STBitString* construct (SerializerIterator& u, SField::ref name)
+    {
+        return new STBitString (name, u.getBitString<Bits> ());
+    }
+};
+
+template <>
+inline SerializedTypeID STBitString<128>::getSType () const
+{
+    return STI_HASH128;
+}
+
+template <>
+inline SerializedTypeID STBitString<160>::getSType () const
+{
+    return STI_HASH160;
+}
+
+template <>
+inline SerializedTypeID STBitString<256>::getSType () const
+{
+    return STI_HASH256;
+}
+
+using STHash128 = STBitString<128>;
+using STHash160 = STBitString<160>;
+using STHash256 = STBitString<256>;
+
+} // ripple
+
+#endif

src/ripple/module/data/protocol/STInteger.cpp

@@ -0,0 +1,179 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include <ripple/module/data/protocol/STInteger.h>
+
+namespace ripple {
+
+template <>
+SerializedTypeID STUInt8::getSType () const
+{
+    return STI_UINT8;
+}
+
+template <>
+STUInt8* STUInt8::construct (SerializerIterator& u, SField::ref name)
+{
+    return new STUInt8 (name, u.get8 ());
+}
+
+template <>
+std::string STUInt8::getText () const
+{
+    if (getFName () == sfTransactionResult)
+    {
+        std::string token, human;
+
+        if (transResultInfo (static_cast<TER> (value_), token, human))
+            return human;
+    }
+
+    return beast::lexicalCastThrow <std::string> (value_);
+}
+
+template <>
+Json::Value STUInt8::getJson (int) const
+{
+    if (getFName () == sfTransactionResult)
+    {
+        std::string token, human;
+
+        if (transResultInfo (static_cast<TER> (value_), token, human))
+            return token;
+        else
+            WriteLog (lsWARNING, SerializedType)
+                << "Unknown result code in metadata: " << value_;
+    }
+
+    return value_;
+}
+
+//------------------------------------------------------------------------------
+
+template <>
+SerializedTypeID STUInt16::getSType () const
+{
+    return STI_UINT16;
+}
+
+template <>
+STUInt16* STUInt16::construct (SerializerIterator& u, SField::ref name)
+{
+    return new STUInt16 (name, u.get16 ());
+}
+
+template <>
+std::string STUInt16::getText () const
+{
+    if (getFName () == sfLedgerEntryType)
+    {
+        auto item = LedgerFormats::getInstance ()->findByType (
+            static_cast <LedgerEntryType> (value_));
+
+        if (item != nullptr)
+            return item->getName ();
+    }
+
+    if (getFName () == sfTransactionType)
+    {
+        TxFormats::Item const* const item =
+            TxFormats::getInstance()->findByType (static_cast <TxType> (value_));
+
+        if (item != nullptr)
+            return item->getName ();
+    }
+
+    return beast::lexicalCastThrow <std::string> (value_);
+}
+
+template <>
+Json::Value STUInt16::getJson (int) const
+{
+    if (getFName () == sfLedgerEntryType)
+    {
+        LedgerFormats::Item const* const item =
+            LedgerFormats::getInstance ()->findByType (static_cast <LedgerEntryType> (value_));
+
+        if (item != nullptr)
+            return item->getName ();
+    }
+
+    if (getFName () == sfTransactionType)
+    {
+        TxFormats::Item const* const item =
+            TxFormats::getInstance()->findByType (static_cast <TxType> (value_));
+
+        if (item != nullptr)
+            return item->getName ();
+    }
+
+    return value_;
+}
+
+//------------------------------------------------------------------------------
+
+template <>
+SerializedTypeID STUInt32::getSType () const
+{
+    return STI_UINT32;
+}
+
+template <>
+STUInt32* STUInt32::construct (SerializerIterator& u, SField::ref name)
+{
+    return new STUInt32 (name, u.get32 ());
+}
+
+template <>
+std::string STUInt32::getText () const
+{
+    return beast::lexicalCastThrow <std::string> (value_);
+}
+
+template <>
+Json::Value STUInt32::getJson (int) const
+{
+    return value_;
+}
+
+template <>
+SerializedTypeID STUInt64::getSType () const
+{
+    return STI_UINT64;
+}
+
+template <>
+STUInt64* STUInt64::construct (SerializerIterator& u, SField::ref name)
+{
+    return new STUInt64 (name, u.get64 ());
+}
+
+template <>
+std::string STUInt64::getText () const
+{
+    return beast::lexicalCastThrow <std::string> (value_);
+}
+
+template <>
+Json::Value STUInt64::getJson (int) const
+{
+    return strHex (value_);
+}
+
+} // ripple

src/ripple/module/data/protocol/STInteger.h

@@ -0,0 +1,101 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef RIPPLE_STINTEGER_H
+#define RIPPLE_STINTEGER_H
+
+#include <ripple/module/data/protocol/SerializedType.h>
+
+namespace ripple {
+
+template <typename Integer>
+class STInteger : public SerializedType
+{
+public:
+    STInteger (Integer v = 0) : value_ (v)
+    {
+    }
+
+    STInteger (SField::ref n, Integer v = 0) : SerializedType (n), value_ (v)
+    {
+    }
+
+    static std::unique_ptr<SerializedType> deserialize (
+        SerializerIterator& sit, SField::ref name)
+    {
+        return std::unique_ptr<SerializedType> (construct (sit, name));
+    }
+
+    SerializedTypeID getSType () const
+    {
+        return STI_UINT8;
+    }
+
+    Json::Value getJson (int) const;
+    std::string getText () const;
+
+    void add (Serializer& s) const
+    {
+        assert (fName->isBinary ());
+        assert (fName->fieldType == getSType ());
+        s.addInteger (value_);
+    }
+
+    Integer getValue () const
+    {
+        return value_;
+    }
+    void setValue (Integer v)
+    {
+        value_ = v;
+    }
+
+    operator Integer () const
+    {
+        return value_;
+    }
+    virtual bool isDefault () const
+    {
+        return value_ == 0;
+    }
+
+    bool isEquivalent (const SerializedType& t) const
+    {
+        const STInteger* v = dynamic_cast<const STInteger*> (&t);
+        return v && (value_ == v->value_);
+    }
+
+private:
+    Integer value_;
+
+    STInteger* duplicate () const
+    {
+        return new STInteger (*this);
+    }
+    static STInteger* construct (SerializerIterator&, SField::ref f);
+};
+
+using STUInt8 = STInteger<unsigned char>;
+using STUInt16 = STInteger<std::uint16_t>;
+using STUInt32 = STInteger<std::uint32_t>;
+using STUInt64 = STInteger<std::uint64_t>;
+
+} // ripple
+
+#endif

src/ripple/module/data/protocol/STParsedJSON.cpp

@@ -17,9 +17,9 @@
 */
 //==============================================================================
 
-#include <cassert>
-
+#include <ripple/module/data/protocol/STInteger.h>
 #include <beast/module/core/text/LexicalCast.h>
+#include <cassert>
 
 namespace ripple {
 

src/ripple/module/data/protocol/SerializedObject.h

@@ -236,7 +236,8 @@ public:
         if (rf->getSType () == STI_NOTPRESENT)
             rf = makeFieldPresent (field);
 
-        if (auto cf = dynamic_cast<STHash160*> (rf))
+        using Bits = STBitString<160>;
+        if (auto cf = dynamic_cast<Bits*> (rf))
             cf->setValue (v);
         else
             throw std::runtime_error ("Wrong field type");

src/ripple/module/data/protocol/SerializedTypes.cpp

@@ -62,191 +62,9 @@ std::string SerializedType::getFullText () const
     return ret;
 }
 
-STUInt8* STUInt8::construct (SerializerIterator& u, SField::ref name)
-{
-    return new STUInt8 (name, u.get8 ());
-}
-
-std::string STUInt8::getText () const
-{
-    if (getFName () == sfTransactionResult)
-    {
-        std::string token, human;
-
-        if (transResultInfo (static_cast<TER> (value), token, human))
-            return human;
-    }
-
-    return beast::lexicalCastThrow <std::string> (value);
-}
-
-Json::Value STUInt8::getJson (int) const
-{
-    if (getFName () == sfTransactionResult)
-    {
-        std::string token, human;
-
-        if (transResultInfo (static_cast<TER> (value), token, human))
-            return token;
-        else
-            WriteLog (lsWARNING, SerializedType) << "Unknown result code in metadata: " << value;
-    }
-
-    return value;
-}
-
-bool STUInt8::isEquivalent (const SerializedType& t) const
-{
-    const STUInt8* v = dynamic_cast<const STUInt8*> (&t);
-    return v && (value == v->value);
-}
-
-STUInt16* STUInt16::construct (SerializerIterator& u, SField::ref name)
-{
-    return new STUInt16 (name, u.get16 ());
-}
-
-std::string STUInt16::getText () const
-{
-    if (getFName () == sfLedgerEntryType)
-    {
-        LedgerFormats::Item const* const item =
-            LedgerFormats::getInstance ()->findByType (static_cast <LedgerEntryType> (value));
-
-        if (item != nullptr)
-            return item->getName ();
-    }
-
-    if (getFName () == sfTransactionType)
-    {
-        TxFormats::Item const* const item =
-            TxFormats::getInstance()->findByType (static_cast <TxType> (value));
-
-        if (item != nullptr)
-            return item->getName ();
-    }
-
-    return beast::lexicalCastThrow <std::string> (value);
-}
-
-Json::Value STUInt16::getJson (int) const
-{
-    if (getFName () == sfLedgerEntryType)
-    {
-        LedgerFormats::Item const* const item =
-            LedgerFormats::getInstance ()->findByType (static_cast <LedgerEntryType> (value));
-
-        if (item != nullptr)
-            return item->getName ();
-    }
-
-    if (getFName () == sfTransactionType)
-    {
-        TxFormats::Item const* const item =
-            TxFormats::getInstance()->findByType (static_cast <TxType> (value));
-
-        if (item != nullptr)
-            return item->getName ();
-    }
-
-    return value;
-}
-
-bool STUInt16::isEquivalent (const SerializedType& t) const
-{
-    const STUInt16* v = dynamic_cast<const STUInt16*> (&t);
-    return v && (value == v->value);
-}
-
-STUInt32* STUInt32::construct (SerializerIterator& u, SField::ref name)
-{
-    return new STUInt32 (name, u.get32 ());
-}
-
-std::string STUInt32::getText () const
-{
-    return beast::lexicalCastThrow <std::string> (value);
-}
-
-Json::Value STUInt32::getJson (int) const
-{
-    return value;
-}
-
-bool STUInt32::isEquivalent (const SerializedType& t) const
-{
-    const STUInt32* v = dynamic_cast<const STUInt32*> (&t);
-    return v && (value == v->value);
-}
-
-STUInt64* STUInt64::construct (SerializerIterator& u, SField::ref name)
-{
-    return new STUInt64 (name, u.get64 ());
-}
-
-std::string STUInt64::getText () const
-{
-    return beast::lexicalCastThrow <std::string> (value);
-}
-
-Json::Value STUInt64::getJson (int) const
-{
-    return strHex (value);
-}
-
-bool STUInt64::isEquivalent (const SerializedType& t) const
-{
-    const STUInt64* v = dynamic_cast<const STUInt64*> (&t);
-    return v && (value == v->value);
-}
-
-STHash128* STHash128::construct (SerializerIterator& u, SField::ref name)
-{
-    return new STHash128 (name, u.get128 ());
-}
-
-std::string STHash128::getText () const
-{
-    return to_string (value);
-}
-
-bool STHash128::isEquivalent (const SerializedType& t) const
-{
-    const STHash128* v = dynamic_cast<const STHash128*> (&t);
-    return v && (value == v->value);
-}
-
-STHash160* STHash160::construct (SerializerIterator& u, SField::ref name)
-{
-    return new STHash160 (name, u.get160 ());
-}
-
-std::string STHash160::getText () const
-{
-    return to_string (value);
-}
-
-bool STHash160::isEquivalent (const SerializedType& t) const
-{
-    const STHash160* v = dynamic_cast<const STHash160*> (&t);
-    return v && (value == v->value);
-}
-
-STHash256* STHash256::construct (SerializerIterator& u, SField::ref name)
-{
-    return new STHash256 (name, u.get256 ());
-}
-
-std::string STHash256::getText () const
-{
-    return to_string (value);
-}
-
-bool STHash256::isEquivalent (const SerializedType& t) const
-{
-    const STHash256* v = dynamic_cast<const STHash256*> (&t);
-    return v && (value == v->value);
-}
+//
+// STVariableLength
+//
 
 STVariableLength::STVariableLength (SerializerIterator& st, SField::ref name) : SerializedType (name)
 {

src/ripple/module/data/protocol/SerializedTypes.h

@@ -22,487 +22,13 @@
 
 #include <ripple/module/data/protocol/FieldNames.h>
 #include <ripple/module/data/protocol/Serializer.h>
+#include <ripple/module/data/protocol/STBitString.h>
+#include <ripple/module/data/protocol/STInteger.h>
 #include <ripple/module/data/protocol/SerializedType.h>
 #include <ripple/module/data/protocol/STAmount.h>
 
 namespace ripple {
 
-// TODO(tom): make STUInt8, STUInt16, STUInt32, STUInt64 a single templated
-// class to reduce the quadruple redundancy we have all over the rippled code
-// regarding uint-like types.
-
-class STUInt8 : public SerializedType
-{
-public:
-
-    STUInt8 (unsigned char v = 0) : value (v)
-    {
-        ;
-    }
-    STUInt8 (SField::ref n, unsigned char v = 0) : SerializedType (n), value (v)
-    {
-        ;
-    }
-    static std::unique_ptr<SerializedType> deserialize (SerializerIterator& sit, SField::ref name)
-    {
-        return std::unique_ptr<SerializedType> (construct (sit, name));
-    }
-
-    SerializedTypeID getSType () const
-    {
-        return STI_UINT8;
-    }
-    std::string getText () const;
-    Json::Value getJson (int) const;
-    void add (Serializer& s) const
-    {
-        assert (fName->isBinary ());
-        assert (fName->fieldType == STI_UINT8);
-        s.add8 (value);
-    }
-
-    unsigned char getValue () const
-    {
-        return value;
-    }
-    void setValue (unsigned char v)
-    {
-        value = v;
-    }
-
-    operator unsigned char () const
-    {
-        return value;
-    }
-    virtual bool isEquivalent (const SerializedType& t) const;
-    virtual bool isDefault () const
-    {
-        return value == 0;
-    }
-
-private:
-    unsigned char value;
-
-    STUInt8* duplicate () const
-    {
-        return new STUInt8 (*this);
-    }
-    static STUInt8* construct (SerializerIterator&, SField::ref f);
-};
-
-//------------------------------------------------------------------------------
-
-class STUInt16 : public SerializedType
-{
-public:
-
-    STUInt16 (std::uint16_t v = 0) : value (v)
-    {
-        ;
-    }
-    STUInt16 (SField::ref n, std::uint16_t v = 0) : SerializedType (n), value (v)
-    {
-        ;
-    }
-    static std::unique_ptr<SerializedType> deserialize (SerializerIterator& sit, SField::ref name)
-    {
-        return std::unique_ptr<SerializedType> (construct (sit, name));
-    }
-
-    SerializedTypeID getSType () const
-    {
-        return STI_UINT16;
-    }
-    std::string getText () const;
-    Json::Value getJson (int) const;
-    void add (Serializer& s) const
-    {
-        assert (fName->isBinary ());
-        assert (fName->fieldType == STI_UINT16);
-        s.add16 (value);
-    }
-
-    std::uint16_t getValue () const
-    {
-        return value;
-    }
-    void setValue (std::uint16_t v)
-    {
-        value = v;
-    }
-
-    operator std::uint16_t () const
-    {
-        return value;
-    }
-    virtual bool isEquivalent (const SerializedType& t) const;
-    virtual bool isDefault () const
-    {
-        return value == 0;
-    }
-
-private:
-    std::uint16_t value;
-
-    STUInt16* duplicate () const
-    {
-        return new STUInt16 (*this);
-    }
-    static STUInt16* construct (SerializerIterator&, SField::ref name);
-};
-
-//------------------------------------------------------------------------------
-
-class STUInt32 : public SerializedType
-{
-public:
-
-    STUInt32 (std::uint32_t v = 0) : value (v)
-    {
-        ;
-    }
-    STUInt32 (SField::ref n, std::uint32_t v = 0) : SerializedType (n), value (v)
-    {
-        ;
-    }
-    static std::unique_ptr<SerializedType> deserialize (SerializerIterator& sit, SField::ref name)
-    {
-        return std::unique_ptr<SerializedType> (construct (sit, name));
-    }
-
-    SerializedTypeID getSType () const
-    {
-        return STI_UINT32;
-    }
-    std::string getText () const;
-    Json::Value getJson (int) const;
-    void add (Serializer& s) const
-    {
-        assert (fName->isBinary ());
-        assert (fName->fieldType == STI_UINT32);
-        s.add32 (value);
-    }
-
-    std::uint32_t getValue () const
-    {
-        return value;
-    }
-    void setValue (std::uint32_t v)
-    {
-        value = v;
-    }
-
-    operator std::uint32_t () const
-    {
-        return value;
-    }
-    virtual bool isEquivalent (const SerializedType& t) const;
-    virtual bool isDefault () const
-    {
-        return value == 0;
-    }
-
-private:
-    std::uint32_t value;
-
-    STUInt32* duplicate () const
-    {
-        return new STUInt32 (*this);
-    }
-    static STUInt32* construct (SerializerIterator&, SField::ref name);
-};
-
-//------------------------------------------------------------------------------
-
-class STUInt64 : public SerializedType
-{
-public:
-    STUInt64 (std::uint64_t v = 0) : value (v)
-    {
-        ;
-    }
-    STUInt64 (SField::ref n, std::uint64_t v = 0) : SerializedType (n), value (v)
-    {
-        ;
-    }
-    static std::unique_ptr<SerializedType> deserialize (SerializerIterator& sit, SField::ref name)
-    {
-        return std::unique_ptr<SerializedType> (construct (sit, name));
-    }
-
-    SerializedTypeID getSType () const
-    {
-        return STI_UINT64;
-    }
-    std::string getText () const;
-    Json::Value getJson (int) const;
-    void add (Serializer& s) const
-    {
-        assert (fName->isBinary ());
-        assert (fName->fieldType == STI_UINT64);
-        s.add64 (value);
-    }
-
-    std::uint64_t getValue () const
-    {
-        return value;
-    }
-    void setValue (std::uint64_t v)
-    {
-        value = v;
-    }
-
-    operator std::uint64_t () const
-    {
-        return value;
-    }
-    virtual bool isEquivalent (const SerializedType& t) const;
-    virtual bool isDefault () const
-    {
-        return value == 0;
-    }
-
-private:
-    std::uint64_t value;
-
-    STUInt64* duplicate () const
-    {
-        return new STUInt64 (*this);
-    }
-    static STUInt64* construct (SerializerIterator&, SField::ref name);
-};
-
-//------------------------------------------------------------------------------
-
-// TODO(tom): make STHash128, STHash160 and STHash256 a single templated class
-// to reduce the triple redundancy we have all over the rippled code regarding
-// hash-like classes.
-
-class STHash128 : public SerializedType
-{
-public:
-    STHash128 (const uint128& v) : value (v)
-    {
-        ;
-    }
-    STHash128 (SField::ref n, const uint128& v) : SerializedType (n), value (v)
-    {
-        ;
-    }
-    STHash128 (SField::ref n, const char* v) : SerializedType (n)
-    {
-        value.SetHex (v);
-    }
-    STHash128 (SField::ref n, const std::string& v) : SerializedType (n)
-    {
-        value.SetHex (v);
-    }
-    STHash128 (SField::ref n) : SerializedType (n)
-    {
-        ;
-    }
-    STHash128 ()
-    {
-        ;
-    }
-    static std::unique_ptr<SerializedType> deserialize (SerializerIterator& sit, SField::ref name)
-    {
-        return std::unique_ptr<SerializedType> (construct (sit, name));
-    }
-
-    SerializedTypeID getSType () const
-    {
-        return STI_HASH128;
-    }
-    virtual std::string getText () const;
-    void add (Serializer& s) const
-    {
-        assert (fName->isBinary ());
-        assert (fName->fieldType == STI_HASH128);
-        s.add128 (value);
-    }
-
-    const uint128& getValue () const
-    {
-        return value;
-    }
-    void setValue (const uint128& v)
-    {
-        value = v;
-    }
-
-    operator uint128 () const
-    {
-        return value;
-    }
-    virtual bool isEquivalent (const SerializedType& t) const;
-    virtual bool isDefault () const
-    {
-        return value.isZero ();
-    }
-
-private:
-    uint128 value;
-
-    STHash128* duplicate () const
-    {
-        return new STHash128 (*this);
-    }
-    static STHash128* construct (SerializerIterator&, SField::ref name);
-};
-
-//------------------------------------------------------------------------------
-
-class STHash160 : public SerializedType
-{
-public:
-    STHash160 (uint160 const& v) : value (v)
-    {
-        ;
-    }
-    STHash160 (SField::ref n, uint160 const& v) : SerializedType (n), value (v)
-    {
-        ;
-    }
-    STHash160 (SField::ref n, const char* v) : SerializedType (n)
-    {
-        value.SetHex (v);
-    }
-    STHash160 (SField::ref n, const std::string& v) : SerializedType (n)
-    {
-        value.SetHex (v);
-    }
-    STHash160 (SField::ref n) : SerializedType (n)
-    {
-        ;
-    }
-    STHash160 ()
-    {
-        ;
-    }
-    static std::unique_ptr<SerializedType> deserialize (SerializerIterator& sit, SField::ref name)
-    {
-        return std::unique_ptr<SerializedType> (construct (sit, name));
-    }
-
-    SerializedTypeID getSType () const
-    {
-        return STI_HASH160;
-    }
-    virtual std::string getText () const;
-    void add (Serializer& s) const
-    {
-        assert (fName->isBinary ());
-        assert (fName->fieldType == STI_HASH160);
-        s.add160 (value);
-    }
-
-    uint160 const& getValue () const
-    {
-        return value;
-    }
-
-    template <class Tag>
-    void setValue (base_uint<160, Tag> const& v)
-    {
-        value.copyFrom(v);
-    }
-
-    operator uint160 () const
-    {
-        return value;
-    }
-    virtual bool isEquivalent (const SerializedType& t) const;
-    virtual bool isDefault () const
-    {
-        return value.isZero ();
-    }
-
-private:
-    uint160 value;
-
-    STHash160* duplicate () const
-    {
-        return new STHash160 (*this);
-    }
-    static STHash160* construct (SerializerIterator&, SField::ref name);
-};
-
-//------------------------------------------------------------------------------
-
-class STHash256 : public SerializedType
-{
-public:
-    STHash256 (uint256 const& v) : value (v)
-    {
-        ;
-    }
-    STHash256 (SField::ref n, uint256 const& v) : SerializedType (n), value (v)
-    {
-        ;
-    }
-    STHash256 (SField::ref n, const char* v) : SerializedType (n)
-    {
-        value.SetHex (v);
-    }
-    STHash256 (SField::ref n, const std::string& v) : SerializedType (n)
-    {
-        value.SetHex (v);
-    }
-    STHash256 (SField::ref n) : SerializedType (n)
-    {
-        ;
-    }
-    STHash256 ()
-    {
-        ;
-    }
-    static std::unique_ptr<SerializedType> deserialize (SerializerIterator& sit, SField::ref name)
-    {
-        return std::unique_ptr<SerializedType> (construct (sit, name));
-    }
-
-    SerializedTypeID getSType () const
-    {
-        return STI_HASH256;
-    }
-    std::string getText () const;
-    void add (Serializer& s) const
-    {
-        assert (fName->isBinary ());
-        assert (fName->fieldType == STI_HASH256);
-        s.add256 (value);
-    }
-
-    uint256 const& getValue () const
-    {
-        return value;
-    }
-    void setValue (uint256 const& v)
-    {
-        value = v;
-    }
-
-    operator uint256 () const
-    {
-        return value;
-    }
-    virtual bool isEquivalent (const SerializedType& t) const;
-    virtual bool isDefault () const
-    {
-        return value.isZero ();
-    }
-
-private:
-    uint256 value;
-
-    STHash256* duplicate () const
-    {
-        return new STHash256 (*this);
-    }
-    static STHash256* construct (SerializerIterator&, SField::ref);
-};
-
 //------------------------------------------------------------------------------
 
 // variable length byte string

src/ripple/module/data/protocol/Serializer.cpp

@@ -63,6 +63,11 @@ int Serializer::add64 (std::uint64_t i)
     return ret;
 }
 
+template <> int Serializer::addInteger(unsigned char i) { return add8(i); }
+template <> int Serializer::addInteger(std::uint16_t i) { return add16(i); }
+template <> int Serializer::addInteger(std::uint32_t i) { return add32(i); }
+template <> int Serializer::addInteger(std::uint64_t i) { return add64(i); }
+
 int Serializer::add128 (const uint128& i)
 {
     int ret = mData.size ();
@@ -620,36 +625,6 @@ std::uint64_t SerializerIterator::get64 ()
     return val;
 }
 
-uint128 SerializerIterator::get128 ()
-{
-    uint128 val;
-
-    if (!mSerializer.get128 (val, mPos)) throw std::runtime_error ("invalid serializer get128");
-
-    mPos += 128 / 8;
-    return val;
-}
-
-uint160 SerializerIterator::get160 ()
-{
-    uint160 val;
-
-    if (!mSerializer.get160 (val, mPos)) throw std::runtime_error ("invalid serializer get160");
-
-    mPos += 160 / 8;
-    return val;
-}
-
-uint256 SerializerIterator::get256 ()
-{
-    uint256 val;
-
-    if (!mSerializer.get256 (val, mPos)) throw std::runtime_error ("invalid serializer get256");
-
-    mPos += 256 / 8;
-    return val;
-}
-
 Blob SerializerIterator::getVL ()
 {
     int length;

src/ripple/module/data/protocol/Serializer.h

@@ -67,20 +67,29 @@ public:
     int add64 (std::uint64_t);      // native currency amounts
     int add128 (const uint128&);    // private key generators
     int add256 (uint256 const& );       // transaction and ledger hashes
-    int addRaw (Blob const& vector);
-    int addRaw (const void* ptr, int len);
-    int addRaw (const Serializer& s);
-    int addZeros (size_t uBytes);
+
+    template <typename Integer>
+    int addInteger(Integer);
+
+    template <int Bits, class Tag>
+    int addBitString(base_uint<Bits, Tag> const& v) {
+        int ret = mData.size ();
+        mData.insert (mData.end (), v.begin (), v.end ());
+        return ret;
+    }
 
     // TODO(tom): merge with add128 and add256.
     template <class Tag>
     int add160 (base_uint<160, Tag> const& i)
     {
-        int ret = mData.size ();
-        mData.insert (mData.end (), i.begin (), i.end ());
-        return ret;
+        return addBitString<160, Tag>(i);
     }
 
+    int addRaw (Blob const& vector);
+    int addRaw (const void* ptr, int len);
+    int addRaw (const Serializer& s);
+    int addZeros (size_t uBytes);
+
     int addVL (Blob const& vector);
     int addVL (const std::string& string);
     int addVL (const void* ptr, int len);
@@ -93,16 +102,39 @@ public:
     bool get64 (std::uint64_t&, int offset) const;
     bool get128 (uint128&, int offset) const;
     bool get256 (uint256&, int offset) const;
+
+    template <typename Integer>
+    bool getInteger(Integer& number, int offset) {
+        static const auto bytes = sizeof(Integer);
+        if ((offset + bytes) > mData.size ())
+            return false;
+        number = 0;
+
+        auto ptr = &mData[offset];
+        for (auto i = 0; i < bytes; ++i)
+        {
+            if (i)
+                number <<= 8;
+            number |= *ptr++;
+        }
+        return true;
+    }
+
+    template <int Bits, typename Tag = void>
+    bool getBitString(base_uint<Bits, Tag>& data, int offset) const {
+        auto success = (offset + (Bits / 8)) <= mData.size ();
+        if (success)
+            memcpy (data.begin (), & (mData.front ()) + offset, (Bits / 8));
+        return success;
+    }
+
     uint256 get256 (int offset) const;
 
     // TODO(tom): merge with get128 and get256.
     template <class Tag>
     bool get160 (base_uint<160, Tag>& o, int offset) const
     {
-        auto success = (offset + (160 / 8)) <= mData.size ();
-        if (success)
-            memcpy (o.begin (), & (mData.front ()) + offset, (160 / 8));
-        return success;
+        return getBitString<160, Tag>(o, offset);
     }
 
     bool getRaw (Blob&, int offset, int length) const;
@@ -313,9 +345,25 @@ public:
     std::uint16_t get16 ();
     std::uint32_t get32 ();
     std::uint64_t get64 ();
-    uint128 get128 ();
-    uint160 get160 ();
-    uint256 get256 ();
+
+    uint128 get128 () { return getBitString<128>(); }
+    uint160 get160 () { return getBitString<160>(); }
+    uint256 get256 () { return getBitString<256>(); }
+
+    template <std::size_t Bits, typename Tag = void>
+    void getBitString (base_uint<Bits, Tag>& bits) {
+        if (!mSerializer.getBitString<Bits> (bits, mPos))
+            throw std::runtime_error ("invalid serializer getBitString");
+
+        mPos += Bits / 8;
+    }
+
+    template <std::size_t Bits, typename Tag = void>
+    base_uint<Bits, Tag> getBitString () {
+        base_uint<Bits, Tag> bits;
+        getBitString(bits);
+        return bits;
+    }
 
     void getFieldID (int& type, int& field);
 

src/ripple/unity/data.cpp

@@ -71,6 +71,7 @@
 #include <ripple/module/data/protocol/HashPrefix.cpp>
 #include <ripple/module/data/protocol/LedgerFormats.cpp>
 #include <ripple/module/data/protocol/RippleAddress.cpp>
+#include <ripple/module/data/protocol/STInteger.cpp>
 #include <ripple/module/data/protocol/SerializedTypes.cpp>
 #include <ripple/module/data/protocol/Serializer.cpp>
 #include <ripple/module/data/protocol/SerializedObjectTemplate.cpp>