public StringEmbedding(TypeEmbedder owner, uint cost)
{
Contract.Requires(owner != null);
Owner = owner;
EncodingCost = cost;
bool wasAdded;
Type = Index.MkApply(Index.SymbolTable.GetSortSymbol(BaseSortKind.String), TermIndex.EmptyArgs, out wasAdded);
charSort = Context.MkBitVecSort(CharWidth);
//// Converts bit vectors to strings.
charBoxing = Context.MkConstructor(
CharBoxingName,
IsCharName,
new string[] { CharUnboxingName },
new Z3Sort[] { charSort });
//// Append a char to a string
appStr = Context.MkConstructor(
AppStrName,
IsMultiStrName,
new string[] { AppPrefixName, AppSuffixName },
new Z3Sort[] { null, charSort },
new uint[] { 0, 0 });
neStrSort = Context.MkDatatypeSort(NeStrSortName, new Z3Con[] { charBoxing, appStr });
isChar = charBoxing.TesterDecl;
charUnboxing = charBoxing.AccessorDecls[0];
isMultiStr = appStr.TesterDecl;
appPrefix = appStr.AccessorDecls[0];
appSuffix = appStr.AccessorDecls[1];
//// Functions for building strings.
strBoxing = Context.MkConstructor(
StrBoxingName,
IsNeStrName,
new string[] { StrUnboxingName },
new Z3Sort[] { neStrSort });
emptyStr = Context.MkConstructor(
EmptyStrName,
IsEmptyStrName,
null,
null,
null);
strSort = Context.MkDatatypeSort(StrSortName, new Z3Con[] { emptyStr, strBoxing });
isNeStr = strBoxing.TesterDecl;
strUnboxing = strBoxing.AccessorDecls[0];
isEmptyStr = emptyStr.TesterDecl;
Representation = strSort;
DefaultMember = new Tuple <Term, Z3Expr>(Index.EmptyStringValue, emptyStr.ConstructorDecl.Apply());
}
public ConstructorEmbedding(TypeEmbedder owner, UserSymbol conOrMap, Map <Term, Tuple <uint, UserSymbol> > sortIndices)
{
Contract.Requires(owner != null && conOrMap != null);
Contract.Requires(conOrMap.IsDataConstructor);
Constructor = conOrMap;
Owner = owner;
bool wasAdded;
Type = Index.MkApply(
conOrMap.Kind == SymbolKind.ConSymb ? ((ConSymb)conOrMap).SortSymbol : ((MapSymb)conOrMap).SortSymbol,
TermIndex.EmptyArgs,
out wasAdded);
var fldNames = new string[conOrMap.Arity];
var fldSorts = new Z3Sort[conOrMap.Arity];
var fldRefs = new uint[conOrMap.Arity];
IEnumerable <Field> flds;
if (conOrMap.Kind == SymbolKind.ConSymb)
{
flds = ((ConDecl)(conOrMap.Definitions.First().Node)).Fields;
}
else
{
var mapDecl = (MapDecl)(conOrMap.Definitions.First().Node);
flds = mapDecl.Dom.Concat(mapDecl.Cod);
}
int i = 0;
Tuple <uint, UserSymbol> sortData;
Term argType;
foreach (var f in flds)
{
argType = Index.GetCanonicalTerm(conOrMap, i);
fldNames[i] = string.Format("Get_{0}_{1}", conOrMap.FullName, string.IsNullOrEmpty(f.Name) ? i.ToString() : f.Name);
if (sortIndices.TryFindValue(argType, out sortData))
{
fldSorts[i] = null;
fldRefs[i] = sortData.Item1;
}
else
{
fldSorts[i] = owner.GetEmbedding(argType).Representation;
fldRefs[i] = 0;
}
++i;
}
Z3Constructor = Context.MkConstructor(conOrMap.FullName, "Is" + conOrMap.FullName, fldNames, fldSorts, fldRefs);
}
public void SetRepresentation(Z3Sort sort)
{
Contract.Requires(Representation == null);
Representation = sort;
foreach (var kv in rngBoxings)
{
sortToBoxing.Add(kv.Value.AccessorDecls[0].Range, kv.Value);
allBoxers.Add(kv.Value.ConstructorDecl);
}
foreach (var kv in otherBoxings)
{
if (!sortToBoxing.ContainsKey(kv.Value.AccessorDecls[0].Range))
{
sortToBoxing.Add(kv.Value.AccessorDecls[0].Range, kv.Value);
allBoxers.Add(kv.Value.ConstructorDecl);
}
}
}
public ITypeEmbedding GetEmbedding(Z3Sort sort)
{
return(sortToEmbedding[sort]);
}
public void SetRepresentation(Z3Sort sort)
{
Contract.Requires(Representation == null);
Representation = sort;
}