///////////////////////////////////////////////////////////////////////////
public override VCExpr VisitBoogieFunctionOp(VCExprNAry node, VariableBindings bindings)
{
Contract.Requires((bindings != null));
Contract.Requires((node != null));
Contract.Ensures(Contract.Result <VCExpr>() != null);
OpTypesPair originalOpTypes = OriginalOpTypes(node);
OpTypesPair newOpTypes;
if (!NewOpCache.TryGetValue(originalOpTypes, out newOpTypes))
{
Function /*!*/
oriFun = ((VCExprBoogieFunctionOp)node.Op).Func;
Contract.Assert(oriFun != null);
List <Type /*!*/> /*!*/
inferredTypeArgs = new List <Type /*!*/>();
foreach (Type /*!*/ t in node.TypeArguments)
{
Contract.Assert(t != null);
// inferredTypeArgs.Add(AxBuilder.MapTypeAbstracter.AbstractMapTypeRecursively(t));
inferredTypeArgs.Add(t);
}
VCExprOp /*!*/
newOp = Gen.BoogieFunctionOp(AxBuilderArguments.Typed2Untyped(oriFun));
newOpTypes = new OpTypesPair(newOp, inferredTypeArgs);
NewOpCache.Add(originalOpTypes, newOpTypes);
}
return(AssembleOpExpression(newOpTypes, node, bindings));
}
public override VCExpr VisitSelectOp(VCExprNAry node, VariableBindings bindings)
{
Contract.Requires((bindings != null));
Contract.Requires((node != null));
Contract.Ensures(Contract.Result <VCExpr>() != null);
OpTypesPair originalOpTypes = OriginalOpTypes(node);
OpTypesPair newOpTypes;
if (!NewOpCache.TryGetValue(originalOpTypes, out newOpTypes))
{
MapType /*!*/
rawType = node[0].Type.AsMap;
Contract.Assert(rawType != null);
List <Type> /*!*/
abstractionInstantiation;
Function /*!*/
select =
AxBuilder.MapTypeAbstracter.Select(rawType, out abstractionInstantiation);
Contract.Assert(abstractionInstantiation != null);
newOpTypes = TypesPairForSelectStore(node, select, abstractionInstantiation);
NewOpCache.Add(originalOpTypes, newOpTypes);
}
return(AssembleOpExpression(newOpTypes, node, bindings));
}
////////////////////////////////////////////////////////////////////////////
private VCExpr AssembleOpExpression(OpTypesPair opTypes, IEnumerable <VCExpr /*!*/> /*!*/ oldArgs, VariableBindings bindings)
{
Contract.Requires(bindings != null);
Contract.Requires(cce.NonNullElements(oldArgs));
Contract.Ensures(Contract.Result <VCExpr>() != null);
// UGLY: the code for tracking polarities should be factored out
int oldPolarity = Eraser.Polarity;
Eraser.Polarity = 0;
List <VCExpr /*!*/> /*!*/ newArgs = new List <VCExpr /*!*/> ();
// explicit type parameters
foreach (Type /*!*/ t in opTypes.Types)
{
Contract.Assert(newArgs != null);
newArgs.Add(AxBuilder.Type2Term(t, bindings.TypeVariableBindings));
}
// and the actual value parameters
Function /*!*/ newFun = ((VCExprBoogieFunctionOp)opTypes.Op).Func;
// ^ we only allow this operator at this point
int i = opTypes.Types.Count;
foreach (VCExpr /*!*/ arg in oldArgs)
{
Contract.Assert(arg != null);
newArgs.Add(AxBuilder.Cast(Eraser.Mutate(arg, bindings),
cce.NonNull(newFun.InParams[i]).TypedIdent.Type));
i = i + 1;
}
Eraser.Polarity = oldPolarity;
return(Gen.Function(opTypes.Op, newArgs));
}
public override bool Equals(object that)
{
if (that is OpTypesPair)
{
OpTypesPair thatPair = (OpTypesPair)that;
return(this.Op.Equals(thatPair.Op) &&
HFNS.SameElements(this.Types, thatPair.Types));
}
return(false);
}
///////////////////////////////////////////////////////////////////////////
public override VCExpr VisitBoogieFunctionOp(VCExprNAry node, VariableBindings bindings) {
Contract.Requires((bindings != null));
Contract.Requires((node != null));
Contract.Ensures(Contract.Result<VCExpr>() != null);
OpTypesPair originalOpTypes = OriginalOpTypes(node);
OpTypesPair newOpTypes;
if (!NewOpCache.TryGetValue(originalOpTypes, out newOpTypes)) {
Function/*!*/ oriFun = ((VCExprBoogieFunctionOp)node.Op).Func;
Contract.Assert(oriFun != null);
List<Type/*!*/>/*!*/ inferredTypeArgs = new List<Type/*!*/> ();
foreach (Type/*!*/ t in node.TypeArguments){Contract.Assert(t != null);
// inferredTypeArgs.Add(AxBuilder.MapTypeAbstracter.AbstractMapTypeRecursively(t));
inferredTypeArgs.Add(t);}
VCExprOp/*!*/ newOp = Gen.BoogieFunctionOp(AxBuilderArguments.Typed2Untyped(oriFun));
newOpTypes = new OpTypesPair (newOp, inferredTypeArgs);
NewOpCache.Add(originalOpTypes, newOpTypes);
}
return AssembleOpExpression(newOpTypes, node, bindings);
}
////////////////////////////////////////////////////////////////////////////
private VCExpr AssembleOpExpression(OpTypesPair opTypes, IEnumerable<VCExpr/*!*/>/*!*/ oldArgs, VariableBindings bindings){
Contract.Requires(bindings != null);
Contract.Requires(cce.NonNullElements(oldArgs));
Contract.Ensures(Contract.Result<VCExpr>() != null);
// UGLY: the code for tracking polarities should be factored out
int oldPolarity = Eraser.Polarity;
Eraser.Polarity = 0;
List<VCExpr/*!*/>/*!*/ newArgs = new List<VCExpr/*!*/> ();
// explicit type parameters
foreach (Type/*!*/ t in opTypes.Types){
Contract.Assert(newArgs != null);
newArgs.Add(AxBuilder.Type2Term(t, bindings.TypeVariableBindings));}
// and the actual value parameters
Function/*!*/ newFun = ((VCExprBoogieFunctionOp)opTypes.Op).Func;
// ^ we only allow this operator at this point
int i = opTypes.Types.Count;
foreach (VCExpr/*!*/ arg in oldArgs) {
Contract.Assert(arg != null);
newArgs.Add(AxBuilder.Cast(Eraser.Mutate(arg, bindings),
cce.NonNull(newFun.InParams[i]).TypedIdent.Type));
i = i + 1;
}
Eraser.Polarity = oldPolarity;
return Gen.Function(opTypes.Op, newArgs);
}