public VariableDescription(AALocalDecl localDecl, VariableTypes type)
{
Name = localDecl.GetName().Text;
Type = Util.TypeToString(localDecl.GetType());
switch (type)
{
case VariableTypes.LocalVariable:
PlacementPrefix = "Local";
break;
case VariableTypes.Parameter:
PlacementPrefix = "Parameter";
break;
case VariableTypes.StructVariable:
PlacementPrefix = "Struct field";
break;
default:
PlacementPrefix = "";
break;
}
VariableType = type;
Const = localDecl.GetConst() != null;
IsStatic = localDecl.GetStatic() != null;
Visibility = localDecl.GetVisibilityModifier();
realType = (PType)localDecl.GetType().Clone();
init = localDecl.GetInit();
Line = localDecl.GetName().Line;
Position = TextPoint.FromCompilerCoords(localDecl.GetName());
}
private int FoldInt(PLvalue lvalue, ref bool valid)
{
if (!valid)
{
return(-1);
}
if (lvalue is ALocalLvalue)
{
ALocalLvalue aLvalue = (ALocalLvalue)lvalue;
AALocalDecl decl = data.LocalLinks[aLvalue];
if (decl.GetConst() == null)
{
valid = false;
return(-1);
}
return(FoldInt(decl.GetInit(), ref valid));
}
if (lvalue is AFieldLvalue)
{
AFieldLvalue aLvalue = (AFieldLvalue)lvalue;
AFieldDecl decl = data.FieldLinks[aLvalue];
if (decl.GetConst() == null)
{
valid = false;
return(-1);
}
return(FoldInt(decl.GetInit(), ref valid));
}
if (lvalue is AStructFieldLvalue)
{
AStructFieldLvalue aLvalue = (AStructFieldLvalue)lvalue;
AALocalDecl decl = data.StructMethodFieldLinks[aLvalue];
if (decl.GetConst() == null)
{
valid = false;
return(-1);
}
return(FoldInt(decl.GetInit(), ref valid));
}
if (lvalue is AStructLvalue)
{
AStructLvalue aLvalue = (AStructLvalue)lvalue;
AALocalDecl decl = data.StructFieldLinks[aLvalue];
if (decl.GetConst() == null)
{
valid = false;
return(-1);
}
return(FoldInt(decl.GetInit(), ref valid));
}
valid = false;
return(-1);
}
public override void CaseAALocalDecl(AALocalDecl node)
{
if (node.GetConst() == null)
{
return;
}
initialLocalDecl = node;
if (IsConstant(node.GetInit()))
{
{
List <ALocalLvalue> lvalues = new List <ALocalLvalue>();
lvalues.AddRange(data.LocalLinks.Where(link => link.Value == node).Select(link => link.Key));
foreach (ALocalLvalue lvalue in lvalues)
{
PExp parent = (PExp)lvalue.Parent();
parent.ReplaceBy(Util.MakeClone(node.GetInit(), data));
}
}
{
List <AStructLvalue> lvalues = new List <AStructLvalue>();
lvalues.AddRange(data.StructFieldLinks.Where(link => link.Value == node).Select(link => link.Key));
foreach (AStructLvalue lvalue in lvalues)
{
PExp parent = (PExp)lvalue.Parent();
parent.ReplaceBy(Util.MakeClone(node.GetInit(), data));
}
}
{
List <AStructFieldLvalue> lvalues = new List <AStructFieldLvalue>();
lvalues.AddRange(
data.StructMethodFieldLinks.Where(link => link.Value == node).Select(link => link.Key));
foreach (AStructFieldLvalue lvalue in lvalues)
{
PExp parent = (PExp)lvalue.Parent();
parent.ReplaceBy(Util.MakeClone(node.GetInit(), data));
}
}
if (node.Parent() is ALocalDeclStm)
{
node.Parent().Parent().RemoveChild(node.Parent());
}
else
{
node.Parent().RemoveChild(node);
}
}
initialLocalDecl = null;
}
public override void CaseAALocalDecl(AALocalDecl node)
{
if (node.GetConst() != null)
{
Write("const ");
}
node.GetType().Apply(this);
Write(" " + node.GetName().Text);
if (node.GetInit() != null)
{
Write(" = ");
node.GetInit().Apply(this);
}
}
public override void OutAStructFieldLvalue(AStructFieldLvalue node)
{
if (folding)
{
if (data.StructMethodPropertyLinks.ContainsKey(node))
{
errors.Add(
new ErrorCollection.Error(node.GetName(),
LocRM.GetString("ErrorText61"),
false,
new ErrorCollection.Error(
data.StructMethodPropertyLinks[node].GetName(),
LocRM.GetString("ErrorText62"))), true);
throw new ParserException(node.GetName(), "TypeLinking.OutAStructFieldLvalue");
}
AALocalDecl field = data.StructMethodFieldLinks[node];
if (!(field.GetType() is ANamedType && ((ANamedType)field.GetType()).IsPrimitive("int")))
{
errors.Add(
new ErrorCollection.Error(node.GetName(),
LocRM.GetString("ErrorText59"),
false, new ErrorCollection.Error(field.GetName(), LocRM.GetString("ErrorText60"))), true);
throw new ParserException(node.GetName(), "TypeLinking.OutAStructFieldLvalue");
}
if (field.GetConst() == null)
{
if (!isANewExp)
{
errors.Add(
new ErrorCollection.Error(node.GetName(),
LocRM.GetString("ErrorText62"),
false, new ErrorCollection.Error(field.GetName(), LocRM.GetString("ErrorText60"))), true);
throw new ParserException(node.GetName(), "TypeLinking.OutAFieldLvalue");
}
}
if (field.GetInit() == null)//An error will be given earlier - constant fields must have an initializer
{
throw new ParserException(node.GetName(), "TypeLinking.OutAFieldLvalue");
}
field.GetInit().Apply(this);
}
}
public override void OutALocalLvalue(ALocalLvalue node)
{
if (folding)
{
AALocalDecl local = data.LocalLinks[node];
if (local.GetConst() == null)
{
if (!isANewExp)
{
errors.Add(
new ErrorCollection.Error(node.GetName(),
LocRM.GetString("ErrorText61"),
false), true);
throw new ParserException(null, null);
}
}
if (local.GetInit() == null)//An error will be given earlier
{
throw new ParserException(null, null);
}
local.GetInit().Apply(this);
}
}
public override void OutALocalLvalue(ALocalLvalue node)
{
if (folding)
{
AALocalDecl local = data.LocalLinks[node];
if (local.GetConst() == null)
{
if (!isANewExp)
{
errors.Add(
new ErrorCollection.Error(node.GetName(),
"Dimensions of array types must be constant expressions.",
false), true);
throw new ParserException(null, null);
}
}
if (local.GetInit() == null)//An error will be given earlier
{
throw new ParserException(null, null);
}
local.GetInit().Apply(this);
}
}
bool IsConstant(PLvalue lvalue)
{
if (lvalue is ALocalLvalue)
{
ALocalLvalue aLvalue = (ALocalLvalue)lvalue;
AALocalDecl decl = data.LocalLinks[aLvalue];
if (decl == initialLocalDecl)
{
return(false);
}
return(decl.GetConst() != null && IsConstant(decl.GetInit()));
}
if (lvalue is AFieldLvalue)
{
AFieldLvalue aLvalue = (AFieldLvalue)lvalue;
AFieldDecl decl = data.FieldLinks[aLvalue];
if (decl == initialFieldDecl)
{
return(false);
}
return(decl.GetConst() != null && IsConstant(decl.GetInit()));
}
if (lvalue is APropertyLvalue)
{
return(false);
}
if (lvalue is ANamespaceLvalue)
{
return(true);
}
if (lvalue is AStructFieldLvalue)
{
AStructFieldLvalue aLvalue = (AStructFieldLvalue)lvalue;
AALocalDecl decl = data.StructMethodFieldLinks[aLvalue];
if (decl == initialLocalDecl)
{
return(false);
}
return(decl.GetConst() != null && IsConstant(decl.GetInit()));
}
if (lvalue is AStructLvalue)
{
AStructLvalue aLvalue = (AStructLvalue)lvalue;
AALocalDecl decl = data.StructFieldLinks[aLvalue];
if (decl == initialLocalDecl)
{
return(false);
}
return(decl.GetConst() != null && IsConstant(decl.GetInit()));
}
if (lvalue is AArrayLvalue)
{
AArrayLvalue aLvalue = (AArrayLvalue)lvalue;
return(IsConstant(aLvalue.GetIndex()) && IsConstant(aLvalue.GetBase()));
}
if (lvalue is APointerLvalue)
{
APointerLvalue aLvalue = (APointerLvalue)lvalue;
return(IsConstant(aLvalue.GetBase()));
}
if (lvalue is APArrayLengthLvalue)
{
APArrayLengthLvalue aLvalue = (APArrayLengthLvalue)lvalue;
return(data.ExpTypes[aLvalue.GetBase()] is AArrayTempType);
}
if (lvalue is AThisLvalue)
{
return(false);
}
if (lvalue is AValueLvalue)
{
return(false);
}
throw new Exception("Unexpected lvalue. Got " + lvalue);
}
public override void CaseAALocalDecl(AALocalDecl node)
{
//Convert a static struct field into a global variable. All refferences to it are structFieldLvalues.
if (node.GetStatic() == null)
{
return;
}
AStructDecl str = (AStructDecl)node.Parent();
if (data.StructFields[str].Contains(node))
{
data.StructFields[str].Remove(node);
}
AFieldDecl replacementField;
//Don't enhrit static fields.
if (data.EnheritanceLocalMap.ContainsKey(node))
{
str.RemoveChild(node);
AALocalDecl realVar = data.EnheritanceLocalMap[node];
if (convertionMap.ContainsKey(realVar))
{
//Already converted to a field
replacementField = convertionMap[realVar];
foreach (AStructFieldLvalue lvalue in data.StructMethodFieldLinks.Where(link => link.Value == node).Select(link => link.Key))
{
AFieldLvalue newLvalue = new AFieldLvalue(new TIdentifier(replacementField.GetName().Text));
data.FieldLinks[newLvalue] = replacementField;
data.LvalueTypes[newLvalue] = replacementField.GetType();
lvalue.ReplaceBy(newLvalue);
}
}
else
{
List <AStructFieldLvalue> refferences = new List <AStructFieldLvalue>();
refferences.AddRange(data.StructMethodFieldLinks.Where(link => link.Value == node).Select(link => link.Key));
foreach (AStructFieldLvalue lvalue in refferences)
{
data.StructMethodFieldLinks[lvalue] = realVar;
}
}
return;
}
replacementField = new AFieldDecl(new APublicVisibilityModifier(), null, node.GetConst(), node.GetType(), node.GetName(), node.GetInit());
replacementField.GetName().Text = str.GetName().Text + "_" + replacementField.GetName().Text;
AASourceFile file = Util.GetAncestor <AASourceFile>(node);
file.GetDecl().Insert(file.GetDecl().IndexOf(node.Parent()), replacementField);
data.Fields.Add(new SharedData.DeclItem <AFieldDecl>(file, replacementField));
if (ContainsNewExp(replacementField.GetInit()))
{
data.FieldsToInitInMapInit.Add(replacementField);
}
foreach (AStructFieldLvalue lvalue in data.StructMethodFieldLinks.Where(link => link.Value == node).Select(link => link.Key))
{
AFieldLvalue newLvalue = new AFieldLvalue(new TIdentifier(replacementField.GetName().Text));
data.FieldLinks[newLvalue] = replacementField;
data.LvalueTypes[newLvalue] = replacementField.GetType();
lvalue.ReplaceBy(newLvalue);
}
convertionMap.Add(node, replacementField);
node.Parent().RemoveChild(node);
}