public override ArmadaLValue ApplySeqSelect(IToken i_tok, ResolutionContext context, ArmadaRValue idx1, Type ty)
{
if (!(type is SizedArrayType))
{
context.Fail(i_tok, "Attempt to obtain element of non-array type");
return(null);
}
SizedArrayType st = (SizedArrayType)type;
if (!AH.TypesMatch(st.Range, ty))
{
context.Fail(i_tok, $"Element of type {st.Range} used as type {ty}");
return(null);
}
var crashAvoidance = address.UndefinedBehaviorAvoidance + idx1.UndefinedBehaviorAvoidance;
var s = context.GetLValueState();
var mem = AH.MakeExprDotName(s, "mem", "Armada_SharedMemory");
var h = AH.MakeExprDotName(mem, "heap", "Armada_Heap");
var tree = AH.MakeExprDotName(h, "tree", "Armada_Tree");
crashAvoidance.Add(AH.MakeInExpr(address.Val, tree));
var node = AH.MakeSeqSelectExpr(tree, address.Val, "Armada_Node");
var children = AH.MakeExprDotName(node, "children", AH.MakeChildrenType());
var idx1_as_int = AH.ConvertToIntIfNotInt(idx1.Val);
var field = AH.MakeApply1("Armada_FieldArrayIndex", idx1_as_int, "Armada_Field");
var child = AH.MakeSeqSelectExpr(children, field, new PointerType(st.Range));
crashAvoidance.Add(AH.MakeInExpr(field, children));
return(new AddressableArmadaLValue(i_tok, st.Range, new ArmadaRValue(crashAvoidance, child)));
}
public override ArmadaLValue ApplyExprDotName(IToken i_tok, ResolutionContext context, string fieldName, Type ty)
{
if (!(type is UserDefinedType))
{
context.Fail(i_tok, $"Attempt to take a field ({fieldName}) of non-struct type {type}");
return(null);
}
UserDefinedType ut = (UserDefinedType)type;
if (!context.symbols.DoesStructExist(ut.Name))
{
context.Fail(i_tok, $"Attempt to take a field ({fieldName}) of non struct type {ut.Name}");
return(null);
}
Type fieldType = context.symbols.GetStructFieldType(ut.Name, fieldName);
if (fieldType == null)
{
context.Fail(i_tok, $"Attempt to take non-existent field ({fieldName}) in struct type {ut.Name}");
return(null);
}
if (!AH.TypesMatch(fieldType, ty))
{
context.Fail(i_tok, $"Field {fieldName} of type {fieldType} used as type {ty}");
return(null);
}
var crashAvoidance = address.UndefinedBehaviorAvoidance;
var s = context.GetLValueState();
var mem = AH.MakeExprDotName(s, "mem", "Armada_SharedMemory");
var h = AH.MakeExprDotName(mem, "heap", "Armada_Heap");
var tree = AH.MakeExprDotName(h, "tree", "Armada_Tree");
crashAvoidance.Add(AH.MakeInExpr(address.Val, tree));
var node = AH.MakeSeqSelectExpr(tree, address.Val, "Armada_Node");
var children = AH.MakeExprDotName(node, "children", AH.MakeChildrenType());
var field = AH.MakeApply1("Armada_FieldStruct",
AH.MakeNameSegment($"Armada_FieldType_{ut.Name}'{fieldName}", "Armada_FieldType"),
"Armada_Field");
var child = AH.MakeSeqSelectExpr(children, field, new PointerType(fieldType));
crashAvoidance.Add(AH.MakeInExpr(field, children));
return(new AddressableArmadaLValue(i_tok, fieldType, new ArmadaRValue(crashAvoidance, child)));
}
