samples/audio; Installer: Added SineTone sample
[sdk] / compiler / libec / src / pass15.ec
index 090ac7a..4d4d489 100644 (file)
@@ -121,6 +121,7 @@ static void ReplaceClassMembers(Expression exp, Class _class)
          // First, check if the identifier is declared inside the function
          for(ctx = curContext; ctx != topContext.parent && !symbol; ctx = ctx.parent)
          {
+            if(!ctx) break;   // This happened opening old mapTileCache.ec from archives?
             symbol = (Symbol)ctx.symbols.FindString(id.string);
             if(symbol) break;
          }
@@ -666,7 +667,9 @@ void ComputeClassMembers(Class _class, bool isMember)
                if(_class.memberOffset % _class.structAlignment)
                   extra += _class.structAlignment - (_class.memberOffset % _class.structAlignment);
             }
-            _class.structSize = (_class.base ? (_class.base.templateClass ? _class.base.templateClass.structSize : _class.base.structSize) : 0) + _class.memberOffset + extra;
+            _class.structSize = (_class.base ? (_class.base.templateClass ?
+               (_class.base.type == noHeadClass ? _class.base.templateClass.memberOffset : _class.base.templateClass.structSize) :
+                  (_class.base.type == noHeadClass ? _class.base.memberOffset : _class.base.structSize) ) : 0) + _class.memberOffset + extra;
             if(!member)
             {
                Property prop;
@@ -690,7 +693,7 @@ void ComputeClassMembers(Class _class, bool isMember)
                   if(deriv.computeSize)
                   {
                      // TESTING THIS NEW CODE HERE... TRYING TO FIX ScrollBar MEMBERS DEBUGGING
-                     deriv.offset = /*_class.offset + */_class.structSize;
+                     deriv.offset = /*_class.offset + */(_class.type == noHeadClass ? _class.memberOffset : _class.structSize);
                      deriv.memberOffset = 0;
                      // ----------------------
 
@@ -1155,7 +1158,6 @@ External _DeclareStruct(External neededBy, const char * name, bool skipNoHead, b
    External external = null;
    Symbol classSym = FindClass(name);
    OldList * curDeclarations = null;
-   Specifier curSpec = null;
 
    if(!inCompiler || !classSym) return null;
 
@@ -1175,7 +1177,6 @@ External _DeclareStruct(External neededBy, const char * name, bool skipNoHead, b
       for(spec = external.declaration.specifiers ? external.declaration.specifiers->first : null; spec; spec = spec.next)
          if(spec.type == structSpecifier || spec.type == unionSpecifier)
          {
-            curSpec = spec;
             curDeclarations = spec.definitions;
             break;
          }
@@ -1187,16 +1188,15 @@ External _DeclareStruct(External neededBy, const char * name, bool skipNoHead, b
       OldList * declarations = null;
       char structName[1024];
       bool addedPadding = false;
+      Specifier curSpec = null;
 
       classSym.declaring++;
 
       if(strchr(classSym.string, '<'))
       {
          if(classSym.registered.templateClass)
-         {
             external = _DeclareStruct(neededBy, classSym.registered.templateClass.fullName, skipNoHead, needDereference, fwdDecl);
-            classSym.declaring--;
-         }
+         classSym.declaring--;
          return external;
       }
 
@@ -1222,6 +1222,18 @@ External _DeclareStruct(External neededBy, const char * name, bool skipNoHead, b
             AddMembers(external, declarations, classSym.registered, false, null, classSym.registered, &addedPadding);
          }
 
+         if(external.declaration)
+         {
+            Specifier spec;
+            for(spec = external.declaration.specifiers ? external.declaration.specifiers->first : null; spec; spec = spec.next)
+               if(spec.type == structSpecifier || spec.type == unionSpecifier)
+               {
+                  curSpec = spec;
+                  curDeclarations = spec.definitions;
+                  break;
+               }
+         }
+
          if(declarations && (!declarations->count || (declarations->count == 1 && addedPadding)))
          {
             FreeList(declarations, FreeClassDef);
@@ -1240,10 +1252,6 @@ External _DeclareStruct(External neededBy, const char * name, bool skipNoHead, b
                curSpec.definitions = declarations;
             else
             {
-               char className[1024];
-               strcpy(className, "__ecereClass_");
-               FullClassNameCat(className, classSym.string, true);
-
                specifiers = MkList();
                declarators = MkList();
                ListAdd(specifiers, MkStructOrUnion(structSpecifier, MkIdentifier(structName), declarations));
@@ -1280,6 +1288,18 @@ External _DeclareStruct(External neededBy, const char * name, bool skipNoHead, b
          external.symbol = classSym;
          ast->Add(external);
       }
+      if(reachedPass15 && !external.declaration && classSym.registered && classSym.registered.type == noHeadClass)
+      {
+         // Declare nohead classes without definitions here (e.g. IteratorPointer)
+         char structName[1024];
+         OldList * specifiers, * declarators;
+         structName[0] = 0;
+         FullClassNameCat(structName, name, false);
+         specifiers = MkList();
+         declarators = MkList();
+         ListAdd(specifiers, MkStructOrUnion(structSpecifier, MkIdentifier(structName), null));
+         external.declaration = MkDeclaration(specifiers, declarators);
+      }
       if(fwdDecl)
       {
          External e = external.fwdDecl ? external.fwdDecl : external;
@@ -2952,9 +2972,11 @@ public bool MatchTypes(Type source, Type dest, OldList conversions, Class owning
          else
          {
             // Added this so that DefinedColor = Color doesn't go through ColorRGB property
-            if(enumBaseType &&
-               dest._class && dest._class.registered && dest._class.registered.type == enumClass &&
-               ((source._class && source._class.registered && source._class.registered.type != enumClass) || source.kind == classType)) // Added this here for a base enum to be acceptable for a derived enum (#139)
+            if(dest._class && dest._class.registered && source._class && source._class.registered &&
+               (dest.casted || (enumBaseType && dest._class.registered.type == enumClass &&
+                  (source.kind == classType ||  // Added this here for a base enum to be acceptable for a derived enum (#139)
+                   source._class.registered.type != enumClass)
+                ) ) )
             {
                if(eClass_IsDerived(dest._class.registered, source._class.registered))
                {
@@ -3501,13 +3523,14 @@ bool MatchTypeExpression(Expression sourceExp, Type dest, OldList conversions, b
    Type source;
    Type realDest = dest;
    Type backupSourceExpType = null;
-   Expression computedExp = sourceExp;
+   Expression nbExp = GetNonBracketsExp(sourceExp);
+   Expression computedExp = nbExp;
    dest.refCount++;
 
    if(sourceExp.isConstant && sourceExp.type != constantExp && sourceExp.type != identifierExp && sourceExp.type != castExp &&
       dest.kind == classType && dest._class && dest._class.registered && dest._class.registered.type == enumClass)
    {
-      computedExp = CopyExpression(sourceExp);        // Keep the original expression, but compute for checking enum ranges
+      computedExp = CopyExpression(nbExp);        // Keep the original expression, but compute for checking enum ranges
       ComputeExpression(computedExp /*sourceExp*/);
    }
 
@@ -3515,10 +3538,10 @@ bool MatchTypeExpression(Expression sourceExp, Type dest, OldList conversions, b
 
    if(dest.kind == pointerType && sourceExp.type == constantExp && !strtoul(sourceExp.constant, null, 0))
    {
-      if(computedExp != sourceExp)
+      if(computedExp != nbExp)
       {
          FreeExpression(computedExp);
-         computedExp = sourceExp;
+         computedExp = nbExp;
       }
       FreeType(dest);
       return true;
@@ -3538,10 +3561,10 @@ bool MatchTypeExpression(Expression sourceExp, Type dest, OldList conversions, b
           //if(source._class.registered == dest._class.registered)
           if(sourceBase == destBase)
           {
-            if(computedExp != sourceExp)
+            if(computedExp != nbExp)
             {
                FreeExpression(computedExp);
-               computedExp = sourceExp;
+               computedExp = nbExp;
             }
             FreeType(dest);
             return true;
@@ -3564,17 +3587,17 @@ bool MatchTypeExpression(Expression sourceExp, Type dest, OldList conversions, b
          else
             value = strtoull(computedExp.constant, null, 0);
       }
-      else if(computedExp.type == opExp && sourceExp.op.op == '-' && !computedExp.op.exp1 && computedExp.op.exp2 && computedExp.op.exp2.type == constantExp)
+      else if(computedExp.type == opExp && computedExp.op.op == '-' && !computedExp.op.exp1 && computedExp.op.exp2 && computedExp.op.exp2.type == constantExp)
       {
          if(source.isSigned)
             value = -strtoll(computedExp.op.exp2.constant, null, 0);
          else
             value = -strtoull(computedExp.op.exp2.constant, null, 0);
       }
-      if(computedExp != sourceExp)
+      if(computedExp != nbExp)
       {
          FreeExpression(computedExp);
-         computedExp = sourceExp;
+         computedExp = nbExp;
       }
 
       if(dest.kind != classType && source.kind == classType && source._class && source._class.registered &&
@@ -3918,16 +3941,36 @@ bool MatchTypeExpression(Expression sourceExp, Type dest, OldList conversions, b
       else if(dest.kind == charType && (source.kind == _BoolType || source.kind == charType || source.kind == enumType || source.kind == shortType || source.kind == intType) &&
          (dest.isSigned ? (value >= -128 && value <= 127) : (value >= 0 && value <= 255)))
       {
-         specs = MkList();
-         if(!dest.isSigned) ListAdd(specs, MkSpecifier(UNSIGNED));
-         ListAdd(specs, MkSpecifier(CHAR));
+         if(source.kind == intType)
+         {
+            FreeType(dest);
+            FreeType(source);
+            if(backupSourceExpType) FreeType(backupSourceExpType);
+            return true;
+         }
+         else
+         {
+            specs = MkList();
+            if(!dest.isSigned) ListAdd(specs, MkSpecifier(UNSIGNED));
+            ListAdd(specs, MkSpecifier(CHAR));
+         }
       }
       else if(dest.kind == shortType && (source.kind == enumType || source.kind == _BoolType || source.kind == charType || source.kind == shortType ||
          (source.kind == intType && (dest.isSigned ? (value >= -32768 && value <= 32767) : (value >= 0 && value <= 65535)))))
       {
-         specs = MkList();
-         if(!dest.isSigned) ListAdd(specs, MkSpecifier(UNSIGNED));
-         ListAdd(specs, MkSpecifier(SHORT));
+         if(source.kind == intType)
+         {
+            FreeType(dest);
+            FreeType(source);
+            if(backupSourceExpType) FreeType(backupSourceExpType);
+            return true;
+         }
+         else
+         {
+            specs = MkList();
+            if(!dest.isSigned) ListAdd(specs, MkSpecifier(UNSIGNED));
+            ListAdd(specs, MkSpecifier(SHORT));
+         }
       }
       else if(dest.kind == intType && (source.kind == enumType || source.kind == shortType || source.kind == _BoolType || source.kind == charType || source.kind == intType))
       {
@@ -3998,10 +4041,10 @@ bool MatchTypeExpression(Expression sourceExp, Type dest, OldList conversions, b
    }
    else
    {
-      if(computedExp != sourceExp)
+      if(computedExp != nbExp)
       {
          FreeExpression(computedExp);
-         computedExp = sourceExp;
+         computedExp = nbExp;
       }
 
       while((sourceExp.type == bracketsExp || sourceExp.type == extensionExpressionExp) && sourceExp.list) sourceExp = sourceExp.list->last;
@@ -4349,7 +4392,7 @@ public Operand GetOperand(Expression exp)
    Type type = exp.expType;
    if(type)
    {
-      while(type.kind == classType &&
+      while(type.kind == classType && type._class &&
          type._class.registered && (type._class.registered.type == bitClass || type._class.registered.type == unitClass || type._class.registered.type == enumClass))
       {
          if(!type._class.registered.dataType)
@@ -5682,6 +5725,14 @@ void ComputeExpression(Expression exp)
                OldList * list = exp.list;
                Expression prev = exp.prev;
                Expression next = exp.next;
+
+               // For operations which set the exp type on brackets exp after the inner exp was processed...
+               if(exp.expType && exp.expType.kind == classType && (!e.expType || e.expType.kind != classType))
+               {
+                  FreeType(e.expType);
+                  e.expType = exp.expType;
+                  e.expType.refCount++;
+               }
                ComputeExpression(e);
                //FreeExpContents(exp);
                FreeType(exp.expType);
@@ -7725,6 +7776,13 @@ void ApplyLocation(Expression exp, Location loc)
    }
 }
 
+bool RelatedUnits(Class c1, Class c2)
+{
+   if(c1.base.type == unitClass) c1 = c1.base;
+   if(c2.base.type == unitClass) c2 = c2.base;
+   return c1 == c2;
+}
+
 void ProcessExpressionType(Expression exp)
 {
    bool unresolved = false;
@@ -7790,7 +7848,13 @@ void ProcessExpressionType(Expression exp)
          }
          else
          {
-            Symbol symbol = FindSymbol(id.string, curContext, topContext /*exp.destType ? topContext : globalContext*/, false, id._class && id._class.name == null);
+            Symbol symbol = null;
+            bool findInGlobal = false;
+            if(!topContext.parent && exp.destType && exp.destType.kind == classType && exp.destType._class && exp.destType._class.registered && exp.destType._class.registered.type == enumClass)
+               findInGlobal = true;  // In global context, look at enum values first
+            else
+               symbol = FindSymbol(id.string, curContext, topContext /*exp.destType ? topContext : globalContext*/, false, id._class && id._class.name == null);
+
             // Enums should be resolved here (Special pass in opExp to fix identifiers not seen as enum on the first pass)
             if(!symbol/* && exp.destType*/)
             {
@@ -7816,6 +7880,8 @@ void ProcessExpressionType(Expression exp)
                   symbol = FindSymbol(id.string, topContext.parent, globalContext, false, id._class && id._class.name == null);
                }
             }
+            if(findInGlobal)
+               symbol = FindSymbol(id.string, curContext, topContext, false, id._class && id._class.name == null);
 
             // If we manage to resolve this symbol
             if(symbol)
@@ -8209,6 +8275,8 @@ void ProcessExpressionType(Expression exp)
          Location oldyylloc = yylloc;
          bool useSideUnit = false;
          Class destClass = (exp.destType && exp.destType.kind == classType && exp.destType._class) ? exp.destType._class.registered : null;
+         bool powerOp = false, relationOp = false;
+         Class c1 = null, c2 = null;
 
          // Dummy type to prevent ProcessExpression of operands to say unresolved identifiers yet
          Type dummy
@@ -8255,6 +8323,7 @@ void ProcessExpressionType(Expression exp)
                // Gives boolean result
                boolResult = true;
                useSideType = true;
+               relationOp = true;
                break;
             case '+':
             case '-':
@@ -8279,6 +8348,7 @@ void ProcessExpressionType(Expression exp)
             case '%':
                useSideType = true;
                useDestType = true;
+               if(exp.op.op == '/') powerOp = true;
                break;
             case '&':
             case '*':
@@ -8287,6 +8357,7 @@ void ProcessExpressionType(Expression exp)
                   // For & operator, useDestType nicely ensures the result will fit in a bool (TODO: Fix for generic enum)
                   useSideType = true;
                   useDestType = true;
+                  if(exp.op.op == '*') powerOp = true;
                }
                break;
 
@@ -8344,6 +8415,17 @@ void ProcessExpressionType(Expression exp)
                if(exp.op.exp1.destType) FreeType(exp.op.exp1.destType);
                exp.op.exp1.destType = dummy;
                dummy.refCount++;
+               if(powerOp)
+                  exp.op.exp1.opDestType = true;
+               if(relationOp)
+                  exp.op.exp1.usedInComparison = true;
+            }
+            if(exp.op.op == '+' || exp.op.op == '-')
+            {
+               if(exp.opDestType)
+                  exp.op.exp1.parentOpDestType = true;
+               if(exp.usedInComparison)
+                  exp.op.exp1.usedInComparison = true;
             }
 
             // TESTING THIS HERE...
@@ -8352,6 +8434,7 @@ void ProcessExpressionType(Expression exp)
             if(exp.op.exp1.destType && exp.op.op != '=') exp.op.exp1.destType.count--;
 
             exp.op.exp1.opDestType = false;
+            exp.op.exp1.usedInComparison = false;
 
             // Fix for unit and ++ / --
             if(!exp.op.exp2 && (exp.op.op == INC_OP || exp.op.op == DEC_OP) && exp.op.exp1.expType && exp.op.exp1.expType.kind == classType &&
@@ -8370,7 +8453,7 @@ void ProcessExpressionType(Expression exp)
 
             if(exp.op.exp2)
             {
-               if(exp.op.exp1.expType && (exp.op.exp1.expType.kind == charType || exp.op.exp1.expType.kind == shortType))
+               if(!assign && exp.op.exp1.expType && (exp.op.exp1.expType.kind == charType || exp.op.exp1.expType.kind == shortType))
                {
                   Type type { kind = intType, isSigned = true, refCount = 1, signedBeforePromotion = exp.op.exp1.expType.isSigned, bitMemberSize = exp.op.exp1.expType.bitMemberSize, promotedFrom = exp.op.exp1.expType.kind };
                   FreeType(exp.op.exp1.expType);
@@ -8455,6 +8538,10 @@ void ProcessExpressionType(Expression exp)
                if(exp.op.exp2.destType) FreeType(exp.op.exp2.destType);
                exp.op.exp2.destType = dummy;
                dummy.refCount++;
+               if(powerOp)
+                  exp.op.exp2.opDestType = true;
+               if(relationOp)
+                  exp.op.exp2.usedInComparison = true;
             }
 
             // TESTING THIS HERE... (DANGEROUS)
@@ -8483,11 +8570,19 @@ void ProcessExpressionType(Expression exp)
                if(e.type == castExp && e.cast.exp)
                   e.cast.exp.needCast = true;
             }
+            if(exp.op.op == '+' || exp.op.op == '-')
+            {
+               if(exp.opDestType)
+                  exp.op.exp2.parentOpDestType = true;
+               if(exp.usedInComparison)
+                  exp.op.exp2.usedInComparison = true;
+            }
             ProcessExpressionType(exp.op.exp2);
             exp.op.exp2.opDestType = false;
+            exp.op.exp2.usedInComparison = false;
             if(exp.op.exp2.destType && exp.op.op != '=') exp.op.exp2.destType.count--;
 
-            if(exp.op.exp1 || exp.op.op == '~')
+            if(!assign && (exp.op.exp1 || exp.op.op == '~'))
             {
                if(exp.op.exp2.expType && (exp.op.exp2.expType.kind == charType || exp.op.exp2.expType.kind == shortType))
                {
@@ -8558,6 +8653,24 @@ void ProcessExpressionType(Expression exp)
                if(type2) type2.refCount++;
             }
          }
+         c1 = type1 && type1.kind == classType && type1._class ? type1._class.registered : null;
+         c2 = type2 && type2.kind == classType && type2._class ? type2._class.registered : null;
+
+         if(relationOp &&
+            ( (exp.op.exp1 && exp.op.exp1.ambiguousUnits && (!c2 || c2.type != unitClass)) ||
+               (exp.op.exp2 && exp.op.exp2.ambiguousUnits && (!c1 || c1.type != unitClass))) )
+            Compiler_Warning($"ambiguous units in relational operation\n");
+
+         if(!relationOp &&
+            ((exp.op.exp1 && exp.op.exp1.ambiguousUnits) ||
+             (exp.op.exp2 && exp.op.exp2.ambiguousUnits)) &&
+             (!powerOp || !c1 || c1.type != unitClass || !c2 || c2.type != unitClass || !RelatedUnits(c1, c2)))
+         {
+            if(exp.opDestType || exp.usedInComparison)
+               exp.ambiguousUnits = true;
+            else
+               Compiler_Warning($"ambiguous units\n");
+         }
 
          dummy.kind = voidType;
 
@@ -8589,6 +8702,11 @@ void ProcessExpressionType(Expression exp)
          }
          else if(!assign)
          {
+            if(c1 && !c1.dataType)
+               c1.dataType = ProcessTypeString(c1.dataTypeString, false);
+            if(c2 && !c2.dataType)
+               c2.dataType = ProcessTypeString(c2.dataTypeString, false);
+
             if(boolOps)
             {
                if(exp.op.exp1)
@@ -8618,11 +8736,33 @@ void ProcessExpressionType(Expression exp)
                   exp.op.exp2.expType.truth = true;
                }
             }
+            else if(powerOp && exp.op.exp1 && exp.op.exp2 && ((c1 && c1.type == unitClass) || (c2 && c2.type == unitClass)))
+            {
+               // * or / with at least one unit operand
+               if(c1 && c1.type == unitClass && c2 && c2.type == unitClass)
+               {
+                  // This is where we'd handle unit powers e.g. square meters or meters/seconds
+                  // For now using base types
+                  if(c1.dataType.kind == doubleType)        exp.expType = c1.dataType;
+                  else if(c2.dataType.kind == doubleType)   exp.expType = c2.dataType;
+                  else if(c1.dataType.kind == floatType)    exp.expType = c1.dataType;
+                  else if(c2.dataType.kind == floatType)    exp.expType = c2.dataType;
+                  else
+                     exp.expType = c1.dataType;
+               }
+               else if((c1 && c1.type == unitClass) || exp.op.op == '/')   // 1/units should not be typed with unit
+                  exp.expType = type1;
+               else
+                  exp.expType = type2;
+
+               if(exp.expType)
+                  exp.expType.refCount++;
+            }
             else if(exp.op.exp1 && exp.op.exp2 &&
                ((useSideType /*&&
                      (useSideUnit ||
-                        ((!type1 || type1.kind != classType || type1._class.registered.type != unitClass) &&
-                         (!type2 || type2.kind != classType || type2._class.registered.type != unitClass)))*/) ||
+                        ((!c1 || c1.type != unitClass) &&
+                         (!c2 || c2.type != unitClass)))*/) ||
                   ((!type1 || type1.kind != classType || !strcmp(type1._class.string, "String")) &&
                   (!type2 || type2.kind != classType || !strcmp(type2._class.string, "String")))))
             {
@@ -8631,18 +8771,9 @@ void ProcessExpressionType(Expression exp)
                   ((type1.kind == classType && type1._class && strcmp(type1._class.string, "String")) == (type2.kind == classType && type2._class && strcmp(type2._class.string, "String"))))
                {
                   // Added this check for enum subtraction to result in an int type:
-                  if(exp.op.op == '-' &&
-                     ((type1.kind == classType && type1._class.registered && type1._class.registered.type == enumClass) ||
-                      (type2.kind == classType && type2._class.registered && type2._class.registered.type == enumClass)) )
+                  if(exp.op.op == '-' && ((c1 && c1.type == enumClass) || (c2 && c2.type == enumClass)) )
                   {
-                     Type intType;
-                     if(!type1._class.registered.dataType)
-                        type1._class.registered.dataType = ProcessTypeString(type1._class.registered.dataTypeString, false);
-                     if(!type2._class.registered.dataType)
-                        type2._class.registered.dataType = ProcessTypeString(type2._class.registered.dataTypeString, false);
-
-                     intType = ProcessTypeString(
-                        (type1._class.registered.dataType.kind == int64Type || type2._class.registered.dataType.kind == int64Type) ? "int64" : "int", false);
+                     Type intType = ProcessTypeString((c1 && c1.dataType.kind == int64Type) || (c2 && c2.dataType.kind == int64Type) ? "int64" : "int", false);
 
                      if(exp.op.exp1.destType) FreeType(exp.op.exp1.destType);
                      if(exp.op.exp2.destType) FreeType(exp.op.exp2.destType);
@@ -8661,12 +8792,17 @@ void ProcessExpressionType(Expression exp)
                   }
 
                   // Warning here for adding Radians + Degrees with no destination type
-                  if(!boolResult && type1.kind == classType && (!exp.destType || exp.destType.kind != classType) &&
-                     type1._class.registered && type1._class.registered.type == unitClass &&
-                     type2._class.registered && type2._class.registered.type == unitClass &&
-                     type1._class.registered != type2._class.registered)
-                     Compiler_Warning($"operating on %s and %s with an untyped result, assuming %s\n",
-                        type1._class.string, type2._class.string, type1._class.string);
+                  if(!boolResult && !exp.opDestType && (!exp.destType || exp.destType.kind != classType) &&
+                     c1 && c1.type == unitClass &&
+                     c2 && c2.type == unitClass &&
+                     c1 != c2)
+                  {
+                     if(exp.usedInComparison || exp.parentOpDestType)
+                        exp.ambiguousUnits = true;
+                     else
+                        Compiler_Warning($"operating on %s and %s with an untyped result, assuming %s\n",
+                           type1._class.string, type2._class.string, type1._class.string);
+                  }
 
                   if(type1.kind == pointerType && type1.type.kind == templateType && type2.kind != pointerType)
                   {
@@ -8691,7 +8827,7 @@ void ProcessExpressionType(Expression exp)
                            {
                               if(type2)
                                  FreeType(type2);
-                              type2 = exp.op.exp2.expType = ProcessTypeString("int", false);
+                              type2 = exp.op.exp2.expType = ProcessTypeString("int", false); c2 = null;
                               type2.refCount++;
                            }
 
@@ -8824,7 +8960,7 @@ void ProcessExpressionType(Expression exp)
                   }
                }
                // ADDED THESE TWO FROM OUTSIDE useSideType CHECK
-               else if(!boolResult && (!useSideUnit /*|| exp.destType*/) && type2 && type1 && type2.kind == classType && type1.kind != classType && type2._class && type2._class.registered && type2._class.registered.type == unitClass)
+               else if(!boolResult && !useSideUnit && c2 && c2.type == unitClass && type1 && type1.kind != classType)
                {
                   if(exp.op.exp1.destType) FreeType(exp.op.exp1.destType);
                   // Convert e.g. / 4 into / 4.0
@@ -8835,7 +8971,7 @@ void ProcessExpressionType(Expression exp)
                   exp.expType = type2;
                   if(type2) type2.refCount++;
                }
-               else if(!boolResult && (!useSideUnit /*|| exp.destType*/) && type1 && type2 && type1.kind == classType && type2.kind != classType && type1._class && type1._class.registered && type1._class.registered.type == unitClass)
+               else if(!boolResult && !useSideUnit && c1 && c1.type == unitClass && type2 && type2.kind != classType)
                {
                   if(exp.op.exp2.destType) FreeType(exp.op.exp2.destType);
                   // Convert e.g. / 4 into / 4.0
@@ -8850,36 +8986,34 @@ void ProcessExpressionType(Expression exp)
                {
                   bool valid = false;
 
-                  if(!boolResult && useSideUnit && type1 && type1.kind == classType && type1._class.registered && type1._class.registered.type == unitClass && type2 && type2.kind != classType)
+                  if(!boolResult && useSideUnit && c1 && c1.type == unitClass && type2 && type2.kind != classType)
                   {
                      if(exp.op.exp2.destType) FreeType(exp.op.exp2.destType);
 
-                     if(!type1._class.registered.dataType)
-                        type1._class.registered.dataType = ProcessTypeString(type1._class.registered.dataTypeString, false);
-                     exp.op.exp2.destType = type1._class.registered.dataType;
+                     exp.op.exp2.destType = c1.dataType;
                      exp.op.exp2.destType.refCount++;
 
                      CheckExpressionType(exp.op.exp2, exp.op.exp2.destType, false, false);
                      if(type2)
                         FreeType(type2);
                      type2 = exp.op.exp2.destType;
+                     c2 = type2 && type2.kind == classType && type2._class ? type2._class.registered : null;
                      if(type2) type2.refCount++;
 
                      exp.expType = type2;
                      type2.refCount++;
                   }
 
-                  if(!boolResult && useSideUnit && type2 && type2.kind == classType && type2._class.registered && type2._class.registered.type == unitClass && type1 && type1.kind != classType)
+                  if(!boolResult && useSideUnit && c2 && c2.type == unitClass && type1 && type1.kind != classType)
                   {
                      if(exp.op.exp1.destType) FreeType(exp.op.exp1.destType);
 
-                     if(!type2._class.registered.dataType)
-                        type2._class.registered.dataType = ProcessTypeString(type2._class.registered.dataTypeString, false);
-                     exp.op.exp1.destType = type2._class.registered.dataType;
+                     exp.op.exp1.destType = c2.dataType;
                      exp.op.exp1.destType.refCount++;
 
                      CheckExpressionType(exp.op.exp1, exp.op.exp1.destType, false, false);
                      type1 = exp.op.exp1.destType;
+                     c1 = type1 && type1.kind == classType && type1._class ? type1._class.registered : null;
                      exp.expType = type1;
                      type1.refCount++;
                   }
@@ -8887,8 +9021,8 @@ void ProcessExpressionType(Expression exp)
                   // TESTING THIS NEW CODE
                   if(!boolResult || exp.op.op == '>' || exp.op.op == '<' || exp.op.op == GE_OP || exp.op.op == LE_OP)
                   {
-                     bool op1IsEnum = type1 && type1.kind == classType && type1._class && type1._class.registered && type1._class.registered.type == enumClass;
-                     bool op2IsEnum = type2 && type2.kind == classType && type2._class && type2._class.registered && type2._class.registered.type == enumClass;
+                     bool op1IsEnum = c1 && c1.type == enumClass;
+                     bool op2IsEnum = c2 && c2.type == enumClass;
                      if(exp.op.op == '*' || exp.op.op == '/' || exp.op.op == '-' || exp.op.op == '|' || exp.op.op == '^')
                      {
                         // Convert the enum to an int instead for these operators
@@ -8941,8 +9075,7 @@ void ProcessExpressionType(Expression exp)
                   if(!valid)
                   {
                      // Added this first part of the if here to handle  5 + Degrees { 5 } with either a base unit dest or not a unit dest type
-                     if(type2 && type2.kind == classType && type2._class && type2._class.registered && type2._class.registered.type == unitClass &&
-                        (type1.kind != classType || !type1._class || !type1._class.registered || type1._class.registered.type != unitClass))
+                     if(c2 && c2.type == unitClass && (!c1 || c1.type != unitClass))
                      {
                         if(exp.op.exp1.destType) FreeType(exp.op.exp1.destType);
                         exp.op.exp1.destType = type2;
@@ -9029,12 +9162,12 @@ void ProcessExpressionType(Expression exp)
 
                            Compiler_Warning($"incompatible expressions %s (%s) and %s (%s)\n", expString1, type1String, expString2, type2String);
 
-                           if(type1.kind == classType && type1._class && type1._class.registered && type1._class.registered.type == enumClass)
+                           if(c1 && c1.type == enumClass)
                            {
                               exp.expType = exp.op.exp1.expType;
                               if(exp.op.exp1.expType) exp.op.exp1.expType.refCount++;
                            }
-                           else if(type2.kind == classType && type2._class && type2._class.registered && type2._class.registered.type == enumClass)
+                           else if(c2 && c2.type == enumClass)
                            {
                               exp.expType = exp.op.exp2.expType;
                               if(exp.op.exp2.expType) exp.op.exp2.expType.refCount++;
@@ -9046,7 +9179,7 @@ void ProcessExpressionType(Expression exp)
                else if(type2)
                {
                   // Maybe this was meant to be an enum...
-                  if(type2.kind == classType && type2._class && type2._class.registered && type2._class.registered.type == enumClass)
+                  if(c2 && c2.type == enumClass)
                   {
                      Type oldType = exp.op.exp1.expType;
                      exp.op.exp1.expType = null;
@@ -9089,7 +9222,7 @@ void ProcessExpressionType(Expression exp)
             }
             else if(type2 && (!type1 || (type2.kind == classType && type1.kind != classType)))
             {
-               if(type1 && type2._class && type2._class.registered && type2._class.registered.type == unitClass)
+               if(type1 && c2 && c2.type == unitClass)
                {
                   if(exp.op.exp1.destType) FreeType(exp.op.exp1.destType);
                   // Convert e.g. / 4 into / 4.0
@@ -9111,7 +9244,7 @@ void ProcessExpressionType(Expression exp)
             }
             else if(type1 && (!type2 || (type1.kind == classType && type2.kind != classType)))
             {
-               if(type2 && type1._class && type1._class.registered && type1._class.registered.type == unitClass)
+               if(c2 && c2.type == unitClass)
                {
                   if(exp.op.exp2.destType) FreeType(exp.op.exp2.destType);
                   // Convert e.g. / 4 into / 4.0
@@ -9189,16 +9322,21 @@ void ProcessExpressionType(Expression exp)
             {
                FreeType(e.destType);
                e.opDestType = exp.opDestType;
+               e.usedInComparison = exp.usedInComparison;
+               e.parentOpDestType = exp.parentOpDestType;
                e.destType = exp.destType;
                if(e.destType) { exp.destType.refCount++; /*e.destType.count++; inced = true;*/ }
             }
             ProcessExpressionType(e);
+            if(e.ambiguousUnits)
+               exp.ambiguousUnits = true;
             /*if(inced)
                exp.destType.count--;*/
             if(!exp.expType && !e.next)
             {
                exp.expType = e.expType;
                if(e.expType) e.expType.refCount++;
+               exp.needCast = e.needCast;
             }
             if(!e.isConstant)
                exp.isConstant = false;
@@ -11135,6 +11273,16 @@ void ProcessExpressionType(Expression exp)
       }
    }
 
+   // Trying to do this here before conversion properties kick in and this becomes a new expression... (Fixing Class c; const char * a = c;)
+   // Mark nohead classes as by reference, unless we're casting them to an integral type
+   if(!notByReference && exp.expType && exp.expType.kind == classType && exp.expType._class && exp.expType._class.registered &&
+      exp.expType._class.registered.type == noHeadClass && (!exp.destType ||
+         (exp.destType.kind != intType && exp.destType.kind != int64Type && exp.destType.kind != intPtrType && exp.destType.kind != intSizeType &&
+          exp.destType.kind != longType && exp.destType.kind != shortType && exp.destType.kind != charType && exp.destType.kind != _BoolType)))
+   {
+      exp.byReference = true;
+   }
+
    yylloc = exp.loc;
    if(exp.destType && (/*exp.destType.kind == voidType || */exp.destType.kind == dummyType) );
    else if(exp.destType && !exp.destType.keepCast)
@@ -11213,6 +11361,9 @@ void ProcessExpressionType(Expression exp)
                   Expression nbExp = GetNonBracketsExp(exp);
                   bool skipWarning = false;
                   TypeKind kind = exp.destType.kind;
+                  if(nbExp.type == conditionExp && nbExp.destType && !nbExp.destType.casted && nbExp.destType.kind == exp.destType.kind)
+                     // The if/else operands have already been checked / warned about
+                     skipWarning = true;
                   if((kind == charType || kind == shortType) && exp.destType.isSigned == exp.expType.signedBeforePromotion && nbExp.type == opExp && nbExp.op.exp1 && nbExp.op.exp2)
                   {
                      int op = nbExp.op.op;
@@ -11256,9 +11407,9 @@ void ProcessExpressionType(Expression exp)
                         case '-':
                            if(!exp.destType.isSigned)
                            {
-                              Expression nbExp1 = GetNonBracketsExp(nbExp.op.exp1);
-                              Expression nbExp2 = GetNonBracketsExp(nbExp.op.exp2);
-                              TypeKind from = nbExp2.expType.promotedFrom;
+                              nbExp1 = GetNonBracketsExp(nbExp.op.exp1);
+                              nbExp2 = GetNonBracketsExp(nbExp.op.exp2);
+                              from = nbExp2.expType.promotedFrom;
                               // Max value of unsigned type before promotion minus the same will always fit
                               if((from == charType || from == shortType) && nbExp1.isConstant && nbExp1.type == constantExp)
                               {
@@ -11268,6 +11419,30 @@ void ProcessExpressionType(Expression exp)
                               }
                            }
                            break;
+                        case '|':
+                        {
+                           TypeKind kind1, kind2;
+                           nbExp1 = GetNonBracketsExp(nbExp.op.exp1);
+                           nbExp2 = GetNonBracketsExp(nbExp.op.exp2);
+                           kind1 = nbExp1.expType.promotedFrom ? nbExp1.expType.promotedFrom : nbExp1.expType.kind;
+                           kind2 = nbExp2.expType.promotedFrom ? nbExp2.expType.promotedFrom : nbExp2.expType.kind;
+                           if(((kind1 == charType || (kind1 == shortType && kind == shortType)) || MatchTypeExpression(nbExp1, exp.destType, null, false, false)) &&
+                              ((kind2 == charType || (kind2 == shortType && kind == shortType)) || MatchTypeExpression(nbExp2, exp.destType, null, false, false)))
+                              skipWarning = true;
+                           break;
+                        }
+                        case '&':
+                        {
+                           TypeKind kind1, kind2;
+                           nbExp1 = GetNonBracketsExp(nbExp.op.exp1);
+                           nbExp2 = GetNonBracketsExp(nbExp.op.exp2);
+                           kind1 = nbExp1.expType.promotedFrom ? nbExp1.expType.promotedFrom : nbExp1.expType.kind;
+                           kind2 = nbExp2.expType.promotedFrom ? nbExp2.expType.promotedFrom : nbExp2.expType.kind;
+                           if(((kind1 == charType || (kind1 == shortType && kind == shortType)) || MatchTypeExpression(nbExp1, exp.destType, null, false, false)) ||
+                              ((kind2 == charType || (kind2 == shortType && kind == shortType)) || MatchTypeExpression(nbExp2, exp.destType, null, false, false)))
+                              skipWarning = true;
+                           break;
+                        }
                      }
                   }
 
@@ -11660,7 +11835,7 @@ static void ProcessDeclarator(Declarator decl, bool isFunction)
                                  qualifiers = MkListOne(MkSpecifier(VOID));
                                  declarator = MkDeclaratorPointer(MkPointer(null,null), d);
                               };
-                              if(d.type != pointerDeclarator)
+                              if(!d || d.type != pointerDeclarator)
                                  newParam.qualifiers->Insert(null, MkSpecifier(CONST));
 
                               FreeList(param.qualifiers, FreeSpecifier);
@@ -11681,7 +11856,7 @@ static void ProcessDeclarator(Declarator decl, bool isFunction)
                               FreeList(param.qualifiers, FreeSpecifier);
 
                               param.qualifiers = MkListOne(MkSpecifier(VOID));
-                              if(d.type != pointerDeclarator)
+                              if(!d || d.type != pointerDeclarator)
                                  param.qualifiers->Insert(null, MkSpecifier(CONST));
                               param.declarator = MkDeclaratorPointer(MkPointer(null,null), d);
                               break;
@@ -11702,6 +11877,12 @@ static void ProcessDeclarator(Declarator decl, bool isFunction)
                         {
                            ProcessSpecifier(spec, isFunction, true);
                         }
+                        else if((spec.type == structSpecifier || spec.type == unionSpecifier) && !spec.definitions && spec.id && spec.id.string)
+                        {
+                           Declarator d = param.declarator;
+                           if(!d || d.type != pointerDeclarator)
+                              DeclareStruct(curExternal, spec.id.string, false, true);
+                        }
                      }
                   }
 
@@ -13023,7 +13204,7 @@ static void ProcessFunction(FunctionDefinition function)
             if(_class.fixed)
             {
                Expression e;
-               if(_class.offset && _class.offset == _class.base.structSize)
+               if(_class.offset && _class.offset == (_class.base.type == noHeadClass ? _class.base.memberOffset : _class.base.structSize))
                {
                   e = MkExpClassSize(MkSpecifierName(_class.base.fullName));
                   ProcessExpressionType(e);
@@ -13298,6 +13479,8 @@ void DeclareFunctionUtil(External neededBy, const String s)
       FindSymbol(s, globalContext, globalContext, false, false);
 }
 
+bool reachedPass15;
+
 void ComputeDataTypes()
 {
    External external;
@@ -13327,6 +13510,7 @@ void ComputeDataTypes()
    DeclareFunctionUtil(null, "eInstance_StopWatching");
    DeclareFunctionUtil(null, "eInstance_Watch");
    DeclareFunctionUtil(null, "eInstance_FireWatchers");
+   reachedPass15 = true;
 
    for(external = ast->first; external; external = external.next)
    {