public virtual void SetVarVersions(RootStatement root)
{
VarVersionsProcessor oldProcessor = varVersions;
varVersions = new VarVersionsProcessor(method, methodDescriptor);
varVersions.SetVarVersions(root, oldProcessor);
}
public virtual void SetVarVersions(RootStatement root, VarVersionsProcessor previousVersionsProcessor
)
{
SSAConstructorSparseEx ssa = new SSAConstructorSparseEx();
ssa.SplitVariables(root, method);
FlattenStatementsHelper flattenHelper = new FlattenStatementsHelper();
DirectGraph graph = flattenHelper.BuildDirectGraph(root);
MergePhiVersions(ssa, graph);
typeProcessor.CalculateVarTypes(root, graph);
SimpleMerge(typeProcessor, graph, method);
// FIXME: advanced merging
EliminateNonJavaTypes(typeProcessor);
SetNewVarIndices(typeProcessor, graph, previousVersionsProcessor);
}
private void SetNewVarIndices(VarTypeProcessor typeProcessor, DirectGraph graph,
VarVersionsProcessor previousVersionsProcessor)
{
Dictionary <VarVersionPair, VarType> mapExprentMaxTypes = typeProcessor.GetMapExprentMaxTypes
();
Dictionary <VarVersionPair, VarType> mapExprentMinTypes = typeProcessor.GetMapExprentMinTypes
();
Dictionary <VarVersionPair, int> mapFinalVars = typeProcessor.GetMapFinalVars();
CounterContainer counters = DecompilerContext.GetCounterContainer();
Dictionary <VarVersionPair, int> mapVarPaar = new Dictionary <VarVersionPair, int>
();
Dictionary <int, int> mapOriginalVarIndices = new Dictionary <int, int>();
// map var-version pairs on new var indexes
foreach (VarVersionPair pair in new List <VarVersionPair>(mapExprentMinTypes.Keys))
{
if (pair.version >= 0)
{
int newIndex = pair.version == 1 ? pair.var : counters.GetCounterAndIncrement(CounterContainer
.Var_Counter);
VarVersionPair newVar = new VarVersionPair(newIndex, 0);
Sharpen.Collections.Put(mapExprentMinTypes, newVar, mapExprentMinTypes.GetOrNull(
pair));
Sharpen.Collections.Put(mapExprentMaxTypes, newVar, mapExprentMaxTypes.GetOrNull(
pair));
if (mapFinalVars.ContainsKey(pair))
{
Sharpen.Collections.Put(mapFinalVars, newVar, Sharpen.Collections.Remove(mapFinalVars
, pair));
}
Sharpen.Collections.Put(mapVarPaar, pair, newIndex);
Sharpen.Collections.Put(mapOriginalVarIndices, newIndex, pair.var);
}
}
// set new vars
graph.IterateExprents((Exprent exprent) => {
List <Exprent> lst = exprent.GetAllExprents(true);
lst.Add(exprent);
foreach (Exprent expr in lst)
{
if (expr.type == Exprent.Exprent_Var)
{
VarExprent newVar = (VarExprent)expr;
int?newVarIndex = mapVarPaar.GetOrNullable(new VarVersionPair(newVar));
if (newVarIndex != null)
{
newVar.SetIndex(newVarIndex.Value);
newVar.SetVersion(0);
}
}
else if (expr.type == Exprent.Exprent_Const)
{
VarType maxType = mapExprentMaxTypes.GetOrNull(new VarVersionPair(expr.id, -1));
if (maxType != null && maxType.Equals(VarType.Vartype_Char))
{
((ConstExprent)expr).SetConstType(maxType);
}
}
}
return(0);
}
);
if (previousVersionsProcessor != null)
{
Dictionary <int, int> oldIndices = previousVersionsProcessor.GetMapOriginalVarIndices
();
this.mapOriginalVarIndices = new Dictionary <int, int>(mapOriginalVarIndices.Count
);
foreach (KeyValuePair <int, int> entry in mapOriginalVarIndices)
{
int value = entry.Value;
int?oldValue = oldIndices.GetOrNullable(value);
value = oldValue != null ? oldValue.Value : value;
Sharpen.Collections.Put(this.mapOriginalVarIndices, entry.Key, value);
}
}
else
{
this.mapOriginalVarIndices = mapOriginalVarIndices;
}
}
