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 EnumEmbedding(TypeEmbedder owner, Term type, string name)
{
Contract.Requires(owner != null);
Contract.Requires(type != null);
Owner = owner;
uint id;
Type = type;
foreach (var t in type.Enumerate(x => x.Args))
{
if (t.Symbol.Arity == 0)
{
Contract.Assert(t.Symbol.Kind == SymbolKind.BaseCnstSymb || t.Symbol.Kind == SymbolKind.UserCnstSymb);
id = (uint)valToSymb.Count;
valToSymb.Add(id, t.Symbol);
symbToVal.Add(t.Symbol, id);
}
}
var size = ((uint)valToSymb.Count).MostSignificantOne();
Contract.Assert(((uint)valToSymb.Count).PopulationCount() == 1);
bvSort = Context.MkBitVecSort(size);
bool wasAdded;
boxingCon = Context.MkConstructor(
string.Format(BoxingName, name),
string.Format(TesterName, name),
new string[] { string.Format(UnboxingName, name) },
new Z3Sort[] { bvSort });
Representation = Context.MkDatatypeSort(string.Format(SortName, name), new Z3Con[] { boxingCon });
BoxingFun = boxingCon.ConstructorDecl;
UnboxingFun = boxingCon.AccessorDecls[0];
TesterFun = boxingCon.TesterDecl;
DefaultMember = new Tuple <Term, Z3Expr>(
Index.MkApply(valToSymb[0], TermIndex.EmptyArgs, out wasAdded),
BoxingFun.Apply(Context.MkBV(0, size)));
}
public IntRangeEmbedding(TypeEmbedder owner, BigInteger lower, BigInteger upper)
{
Contract.Requires(owner != null);
Contract.Requires(lower <= upper);
Owner = owner;
Lower = lower;
Upper = upper;
var width = upper - lower + 1;
Contract.Assert(width > 1 && width.IsPowerOfTwo);
bvSort = Context.MkBitVecSort(width.MostSignificantOne());
bool wasAdded;
Type = Index.MkApply(Index.RangeSymbol,
new Term[]
{
Index.MkCnst(new Rational(lower, BigInteger.One), out wasAdded),
Index.MkCnst(new Rational(upper, BigInteger.One), out wasAdded)
},
out wasAdded);
boxingCon = Context.MkConstructor(
string.Format(BoxingName, lower, upper),
string.Format(TesterName, lower, upper),
new string[] { string.Format(UnboxingName, lower, upper) },
new Z3Sort[] { bvSort });
Representation = Context.MkDatatypeSort(string.Format(SortName, lower, upper), new Z3Con[] { boxingCon });
BoxingFun = boxingCon.ConstructorDecl;
UnboxingFun = boxingCon.AccessorDecls[0];
TesterFun = boxingCon.TesterDecl;
DefaultMember = new Tuple <Term, Z3Expr>(
Index.MkCnst(new Rational(lower, BigInteger.One), out wasAdded),
BoxingFun.Apply(Context.MkBV(0, bvSort.Size)));
z3Lower = Context.MkInt(Lower.ToString());
}
