public static Symbol Unary(MiddleOperator middleOp, Symbol symbol)
{
Type type = symbol.Type;
switch (middleOp)
{
case MiddleOperator.Address:
if (symbol.Value is StaticValue) // &a[i], &s.i
{
StaticValue staticValue = (StaticValue)symbol.Value;
StaticAddress staticAddress =
new StaticAddress(staticValue.UniqueName, staticValue.Offset);
return(new Symbol(new Type(type), staticAddress));
}
else if (symbol.IsExternOrStatic()) // &i
{
StaticAddress staticAddress =
new StaticAddress(symbol.UniqueName, 0);
return(new Symbol(new Type(type), staticAddress));
}
break;
}
return(null);
}
/*private static Expression GenerateIndex(Symbol symbol,
* BigInteger value) {
* int offset = ((int) value) * symbol.Type.ArrayType.Size();
* StaticValue resultValue;
*
* if (symbol.Value is StaticAddress) {
* StaticAddress staticAddress = (StaticAddress) symbol.Value;
* resultValue = new StaticValue(staticAddress.UniqueName,
* staticAddress.Offset + offset);
* }
* else {
* resultValue = new StaticValue(symbol.UniqueName, offset);
* }
*
* Symbol resultSymbol = new Symbol(symbol.Type, resultValue);
* return (new Expression(resultSymbol, null, null));
* }*/
public static Expression Unary(MiddleOperator middleOp, Expression expression)
{
Symbol symbol = expression.Symbol;
switch (middleOp)
{
case MiddleOperator.Address:
if (symbol.Value is StaticValue) // &a[i], &s.i
{
StaticValue staticValue = (StaticValue)symbol.Value;
StaticAddress staticAddress =
new StaticAddress(staticValue.UniqueName, staticValue.Offset);
Symbol resultSymbol =
new Symbol(new Type(symbol.Type), staticAddress);
return(new Expression(resultSymbol, null, null));
}
else if (symbol.IsExternOrStatic()) // &i
{
StaticAddress staticAddress =
new StaticAddress(symbol.UniqueName, 0);
Symbol resultSymbol =
new Symbol(new Type(symbol.Type), staticAddress);
return(new Expression(resultSymbol, null, null));
}
break;
case MiddleOperator.Dereference:
if (symbol.Value is StaticAddress)
{
StaticAddress staticAddress = (StaticAddress)symbol.Value;
StaticValue staticValue =
new StaticValue(staticAddress.UniqueName, staticAddress.Offset);
Symbol resultSymbol =
new Symbol(new Type(symbol.Type), staticValue);
return(new Expression(resultSymbol, null, null));
}
break;
}
return(null);
}
public static Expression Binary(MiddleOperator middleOp,
Expression leftExpression,
Expression rightExpression)
{
Symbol leftSymbol = leftExpression.Symbol,
rightSymbol = rightExpression.Symbol;
Type leftType = leftSymbol.Type, rightType = rightSymbol.Type;
object leftValue = leftSymbol.Value, rightValue = rightSymbol.Value;
switch (middleOp)
{
case MiddleOperator.Add:
if ((leftValue is StaticAddress) && (rightValue is BigInteger)) // &i + 2
{
return(GenerateAddition(leftSymbol, (BigInteger)rightValue));
}
else if ((leftValue is BigInteger) && (rightValue is StaticAddress))// 2 + &i
{
return(GenerateAddition(rightSymbol, (BigInteger)leftValue));
}
else if (leftSymbol.IsExternOrStaticArray() && (rightValue is BigInteger)) // a + 2
{
return(GenerateAddition(leftSymbol, (BigInteger)rightValue));
}
else if ((leftValue is BigInteger) && rightSymbol.IsExternOrStaticArray()) // 2 + a
{
return(GenerateAddition(rightSymbol, (BigInteger)leftValue));
}
break;
case MiddleOperator.Subtract:
if ((leftValue is StaticAddress) && (rightValue is BigInteger)) // &i - 2
{
return(GenerateAddition(leftSymbol, -((BigInteger)rightValue)));
}
if (leftSymbol.IsExternOrStaticArray() && (rightValue is BigInteger)) // a - 2
{
return(GenerateAddition(leftSymbol, -((BigInteger)rightValue)));
}
break;
/*case MiddleOperator.Index:
* if ((leftValue is StaticAddress) && (rightValue is BigInteger)) { // a[2]
* return GenerateIndex(leftSymbol, (BigInteger) rightValue);
* }
* else if ((leftValue is BigInteger) && (rightValue is StaticAddress)) {
* return GenerateIndex(rightSymbol, (BigInteger) leftValue);
* }
* else if (leftSymbol.IsExternOrStaticArray() && (rightValue is BigInteger)) { // a[2]
* return GenerateIndex(leftSymbol, (BigInteger) rightValue);
* }
* else if ((leftValue is BigInteger) && rightSymbol.IsExternOrStaticArray()) {
* return GenerateIndex(rightSymbol, (BigInteger) leftValue);
* }
* break;*/
case MiddleOperator.Dot:
if (leftSymbol.IsExternOrStatic())
{
object resultValue =
new StaticValue(leftSymbol.UniqueName,
rightSymbol.Offset); // s.i
Symbol resultSymbol = new Symbol(leftType, resultValue);
return(new Expression(resultSymbol, null, null));
}
break;
}
return(null);
}
public static Expression Binary(MiddleOperator middleOp,
Expression leftExpression,
Expression rightExpression)
{
Type leftType = leftExpression.Symbol.Type,
rightType = rightExpression.Symbol.Type;
object leftValue = leftExpression.Symbol.Value,
rightValue = rightExpression.Symbol.Value;
switch (middleOp)
{
case MiddleOperator.BinaryAdd: // &i + 2
if ((leftValue is StaticAddress) && (rightValue is BigInteger))
{
StaticAddress staticAddress = (StaticAddress)leftValue;
int resultOffset =
((int)rightValue) * leftType.PointerType.Size();
object resultValue =
new StaticAddress(staticAddress.UniqueName,
staticAddress.Offset + resultOffset);
Symbol resultSymbol = new Symbol(leftType, resultValue);
return(new Expression(resultSymbol, null, null));
}
// 2 + &i
if ((leftValue is BigInteger) && (rightValue is StaticAddress))
{
StaticAddress staticAddress = (StaticAddress)rightValue;
int resultOffset =
((int)leftValue) * rightType.PointerType.Size();
object resultValue =
new StaticAddress(staticAddress.UniqueName,
staticAddress.Offset + resultOffset);
Symbol resultSymbol = new Symbol(rightType, resultValue);
return(new Expression(resultSymbol, null, null));
}
if (leftExpression.Symbol.IsExternOrStatic() && leftType.IsArray() &&
(rightValue is BigInteger)) // a + 2
{
int resultOffset = ((int)rightValue) * leftType.ArrayType.Size();
object resultValue =
new StaticAddress(leftExpression.Symbol.UniqueName,
resultOffset);
Symbol resultSymbol = new Symbol(leftType, resultValue);
return(new Expression(resultSymbol, null, null));
}
if (leftExpression.Symbol.IsExternOrStatic() &&
(leftValue is BigInteger) && rightType.IsArray()) // 2 + a
{
int resultOffset = ((int)leftValue) * rightType.ArrayType.Size();
object resultValue =
new StaticAddress(rightExpression.Symbol.UniqueName,
resultOffset);
Symbol resultSymbol = new Symbol(rightType, resultValue);
return(new Expression(resultSymbol, null, null));
}
break;
case MiddleOperator.BinarySubtract: // &i - 2
if ((leftValue is StaticAddress) && (rightValue is BigInteger))
{
StaticAddress staticAddress = (StaticAddress)leftValue;
int resultOffset = ((int)leftValue) * leftType.PointerType.Size();
object resultValue =
new StaticAddress(staticAddress.UniqueName,
staticAddress.Offset - resultOffset);
Symbol resultSymbol = new Symbol(leftType, resultValue);
return(new Expression(resultSymbol, null, null));
}
if (leftExpression.Symbol.IsExternOrStatic() && leftType.IsArray() &&
(rightValue is BigInteger)) // a - 2
{
int resultOffset = ((int)rightValue) * leftType.ArrayType.Size();
object resultValue =
new StaticAddress(leftExpression.Symbol.UniqueName,
-resultOffset);
Symbol resultSymbol = new Symbol(leftType, resultValue);
return(new Expression(resultSymbol, null, null));
}
break;
case MiddleOperator.Index:
if (leftExpression.Symbol.IsExternOrStatic() && leftType.IsArray() &&
(rightValue is BigInteger)) // a[2]
{
int size = leftType.ArrayType.Size();
int offset = ((int)((BigInteger)rightValue)) * size;
StaticValue resultValue =
new StaticValue(leftExpression.Symbol.UniqueName, offset);
Symbol resultSymbol = new Symbol(leftType, resultValue);
resultSymbol.Addressable = !leftExpression.Symbol.IsRegister() &&
!leftType.ArrayType.IsBitfield();
resultSymbol.Assignable =
!leftType.ArrayType.IsConstantRecursive() &&
!leftType.ArrayType.IsArrayFunctionOrString();
return(new Expression(resultSymbol, null, null));
}
else if ((leftValue is BigInteger) && rightType.IsArray() &&
rightExpression.Symbol.IsExternOrStatic()) // [2]a
{
int size = rightType.ArrayType.Size();
int offset = ((int)((BigInteger)leftValue)) * size;
StaticValue resultValue =
new StaticValue(rightExpression.Symbol.UniqueName, offset);
Symbol resultSymbol = new Symbol(rightType, resultValue);
resultSymbol.Addressable = !leftExpression.Symbol.IsRegister() &&
!leftType.ArrayType.IsBitfield();
resultSymbol.Assignable =
!leftType.ArrayType.IsConstantRecursive() &&
!leftType.ArrayType.IsArrayFunctionOrString();
return(new Expression(resultSymbol, null, null));
}
break;
case MiddleOperator.Dot:
if (leftExpression.Symbol.IsExternOrStatic())
{
object resultValue =
new StaticValue(leftExpression.Symbol.UniqueName,
rightExpression.Symbol.Offset); // s.i
Symbol resultSymbol = new Symbol(leftType, resultValue);
return(new Expression(resultSymbol, null, null));
}
break;
}
return(null);
}
public static void GenerateByteList(Type type, object value, List <sbyte> sbyteList,
IDictionary <int, string> accessMap)
{
if (type.IsString())
{
foreach (char c in ((string)value))
{
sbyteList.Add((sbyte)c);
}
sbyteList.Add((sbyte)0);
}
else if (value is StaticAddress)
{
StaticAddress staticAddress = (StaticAddress)value;
accessMap[sbyteList.Count] = staticAddress.UniqueName;
sbyteList.Add((sbyte)((short)staticAddress.Offset));
sbyteList.Add((sbyte)(((short)staticAddress.Offset) >> 8));
}
else if (value is StaticValue)
{
StaticValue staticValue = (StaticValue)value;
foreach (KeyValuePair <int, string> pair in staticValue.AccessMap)
{
accessMap[pair.Key + sbyteList.Count] = pair.Value;
}
sbyteList.AddRange(staticValue.ByteList);
}
else
{
switch (type.Sort)
{
case Sort.Signed_Short_Int:
case Sort.Unsigned_Short_Int: {
sbyteList.Add((sbyte)((long)value));
}
break;
case Sort.Signed_Char:
case Sort.Unsigned_Char: {
sbyteList.Add((sbyte)((long)value));
}
break;
case Sort.Signed_Int:
case Sort.Unsigned_Int:
case Sort.Pointer: {
long longValue = (long)value;
sbyteList.Add((sbyte)longValue);
sbyteList.Add((sbyte)(longValue >> 8));
}
break;
case Sort.Signed_Long_Int:
case Sort.Unsigned_Long_Int: {
long longValue = (long)value;
sbyteList.Add((sbyte)longValue);
sbyteList.Add((sbyte)(longValue >> 8));
sbyteList.Add((sbyte)(longValue >> 16));
sbyteList.Add((sbyte)(longValue >> 24));
}
break;
case Sort.Float: {
float floatValue = (float)((decimal)value);
byte[] byteArray = BitConverter.GetBytes(floatValue);
foreach (byte b in byteArray)
{
sbyteList.Add((sbyte)b);
}
}
break;
case Sort.Double:
case Sort.Long_Double: {
double doubleValue = (double)((decimal)value);
byte[] byteArray = BitConverter.GetBytes(doubleValue);
foreach (byte b in byteArray)
{
sbyteList.Add((sbyte)b);
}
}
break;
}
}
}
public static void GenerateStatic(Type toType, object fromInit,
List <sbyte> byteList, IDictionary <int, string> accessMap)
{
if (fromInit is Expression)
{
Symbol fromSymbol = ((Expression)fromInit).Symbol();
Assert.Error(fromSymbol.IsStaticOrExtern(), fromSymbol,
Message.Non__static_initializer);
Type fromType = fromSymbol.Type;
if (toType.IsArray() && fromType.IsString())
{
Assert.Error(toType.ArrayType.IsChar());
fromInit = TextToCharList((string)fromSymbol.Value);
}
if (fromType.IsArrayFunctionOrString() && toType.IsPointer())
{
Assert.Error((fromType.IsString() && toType.PointerType.IsChar()) ||
(fromType.IsArray() && fromType.ArrayType.Equals(toType.PointerType)) ||
(fromType.IsFunction() && fromType.Equals(toType.PointerType)));
accessMap[byteList.Count] = fromSymbol.UniqueName;
byteList.Add((sbyte)0);
byteList.Add((sbyte)0);
}
else if (fromSymbol.Value is StaticAddress)
{
Assert.Error(fromType.IsPointer() && toType.IsPointer());
StaticAddress staticAddress = (StaticAddress)fromSymbol.Value;
accessMap[byteList.Count] = staticAddress.UniqueName;
byteList.Add((sbyte)staticAddress.Offset);
byteList.Add((sbyte)(staticAddress.Offset >> 8));
}
else if (fromSymbol.Value is StaticValue)
{
Assert.Error(fromType.Equals(toType));
StaticValue staticValue = (StaticValue)fromSymbol.Value;
foreach (KeyValuePair <int, string> entry in staticValue.AccessMap)
{
accessMap[byteList.Count + entry.Key] = entry.Value;
}
byteList.AddRange(staticValue.ByteList);
}
else
{
Symbol toSymbol = TypeCast.ImplicitCast(null, fromSymbol, toType);
foreach (KeyValuePair <int, string> entry in toSymbol.StaticSymbol.AccessMap)
{
accessMap[byteList.Count + entry.Key] = entry.Value;
}
byteList.AddRange(toSymbol.StaticSymbol.ByteList);
}
}
else
{
List <object> fromList = (List <object>)fromInit;
switch (toType.Sort)
{
case Sort.Array: {
if (toType.ArraySize == 0)
{
toType.ArraySize = fromList.Count;
}
int toByteListSize = byteList.Count + toType.Size();
Assert.Error(fromList.Count <= toType.ArraySize, toType, Message.Too_many_initializers);
//Assert.Warning(fromList.Count == toType.ArraySize, toType, Message.Too_few_initializers);
Type subType = toType.ArrayType;
foreach (object value in fromList)
{
GenerateStatic(subType, value, byteList, accessMap);
}
GenerateZeroByteList(toByteListSize - byteList.Count, byteList);
}
break;
case Sort.Struct: {
IDictionary <string, Symbol> memberMap = toType.MemberMap;
Assert.Error(fromList.Count <= memberMap.Count,
toType, Message.Too_many_initializers);
/*Assert.Warning(fromList.Count == memberMap.Count,
* toType, Message.Too_few_initializers);*/
int toByteListSize = byteList.Count + toType.Size();
KeyValuePair <string, Symbol>[] memberArray = new KeyValuePair <string, Symbol> [memberMap.Count];
memberMap.CopyTo(memberArray, 0);
for (int index = 0; index < fromList.Count; ++index)
{
Symbol memberSymbol = memberArray[index].Value;
object init = ModifyInitializer.DoInit(memberSymbol.Type, fromList[index]);
GenerateStatic(memberSymbol.Type, init, byteList, accessMap);
}
GenerateZeroByteList(toByteListSize - byteList.Count, byteList);
}
break;
case Sort.Union: {
Assert.Error(fromList.Count == 1, toType, Message.A_union_can_be_initalized_by_one_value_only);
int toByteListSize = byteList.Count + toType.Size();
IDictionary <string, Symbol> memberMap = toType.MemberMap;
Symbol firstSymbol = memberMap.Values.GetEnumerator().Current;
object init = ModifyInitializer.DoInit(firstSymbol.Type, fromList[0]);
GenerateStatic(firstSymbol.Type, init, byteList, accessMap);
GenerateZeroByteList(toByteListSize - byteList.Count, byteList);
}
break;
}
}
}