Generate symbolic names for null-value literals that confuse the VC compiler.

Author: Dale Wilson

main/java/uk/co/real_logic/sbe/generation/cpp98/Cpp98Generator.java

@@ -841,9 +841,11 @@ private CharSequence generatePrimitiveFieldMetaData(final String propertyName, f
  {
  final StringBuilder sb = new StringBuilder();
 
- final PrimitiveType primitiveType = token.encoding().primitiveType();
+ final Encoding encoding = token.encoding();
+ final PrimitiveType primitiveType = encoding.primitiveType();
  final String cpp98TypeName = cpp98TypeName(primitiveType);
-
+ final CharSequence nullValueString = generateNullValueLiteral(primitiveType, encoding);
+ 
  sb.append(String.format(
  "\n" +
  indent + " static const %1$s %2$sNullValue()\n" +
@@ -852,7 +854,7 @@ private CharSequence generatePrimitiveFieldMetaData(final String propertyName, f
  indent + " }\n",
  cpp98TypeName,
  propertyName,
- generateLiteral(primitiveType, token.encoding().applicableNullValue().toString())
+ nullValueString
  ));
 
  sb.append(String.format(
@@ -1432,6 +1434,40 @@ private Object generateCompositeProperty(final String propertyName, final Token
  return sb;
  }
 
+ private CharSequence generateNullValueLiteral(final PrimitiveType primitiveType, final Encoding encoding)
+ {
+ // Visual C++ does not handle minimum integer values properly
+ // See: http://msdn.microsoft.com/en-us/library/4kh09110.aspx
+ // So some of the null values get special handling
+ if(null == encoding.nullValue())
+ {
+ switch (primitiveType)
+ {
+ case CHAR:
+ case FLOAT:
+ case DOUBLE:
+ break; // no special handling
+ case INT8:
+ return "SCHAR_MIN";
+ case INT16:
+ return "SHRT_MIN";
+ case INT32:
+ return "LONG_MIN";
+ case INT64:
+ return "LLONG_MIN";
+ case UINT8:
+ return "UCHAR_MAX";
+ case UINT16:
+ return "USHRT_MAX";
+ case UINT32:
+ return "ULONG_MAX";
+ case UINT64:
+ return "ULLONG_MAX";
+ }
+ }
+ return generateLiteral(primitiveType, encoding.applicableNullValue().toString());
+ }
+
  private CharSequence generateLiteral(final PrimitiveType type, final String value)
  {
  String literal = "";