[C++] Read/write set raw value

Author: trozen

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/cpp/CppGenerator.java

@@ -669,6 +669,24 @@ private void generateChoiceSet(final List<Token> tokens) throws IOException
  " }\n",
  cppTypeName(tokens.get(0).encoding().primitiveType())));
 
+ out.append(String.format("\n" +
+ " SBE_NODISCARD %1$s rawValue() const\n" +
+ " {\n" +
+ " %1$s val;\n" +
+ " std::memcpy(&val, m_buffer + m_offset, sizeof(%1$s));\n" +
+ " return val;\n" +
+ " }\n",
+ cppTypeName(tokens.get(0).encoding().primitiveType())));
+
+ out.append(String.format("\n" +
+ " %1$s &rawValue(%2$s value)\n" +
+ " {\n" +
+ " std::memcpy(m_buffer + m_offset, &value, sizeof(%2$s));\n" +
+ " return *this;\n" +
+ " }\n",
+ bitSetName,
+ cppTypeName(tokens.get(0).encoding().primitiveType())));
+
  out.append(generateChoices(bitSetName, tokens.subList(1, tokens.size() - 1)));
  out.append(generateChoicesDisplay(bitSetName, tokens.subList(1, tokens.size() - 1)));
  out.append("};\n");