Exemple #1
0
        public CallGraph TryRemoveAndGetCallingGraph(Address contractAddress, CallGraph callingGraph,
                                                     ContractMetadataTemplate contractMetadataTemplate)
        {
            foreach (var kvPair in contractMetadataTemplate.MethodMetadataTemplates)
            {
                var sourceFunc =
                    Replacement.ReplaceValueIntoReplacement(kvPair.Key, Replacement.This,
                                                            contractAddress.GetFormatted());

                foreach (var calledFunc in kvPair.Value.CallingSet)
                {
                    if (!calledFunc.Contains(Replacement.This))
                    {
                        Replacement.TryGetReplacementWithIndex(calledFunc, 0, out var memberReplacement);
                        var referenceAddress =
                            contractMetadataTemplate.ContractReferences[
                                Replacement.Value(
                                    memberReplacement)]; //FunctionMetadataTemplate itself ensure this value exist
                        var globalCalledFunc = Replacement.ReplaceValueIntoReplacement(calledFunc, memberReplacement,
                                                                                       referenceAddress.GetFormatted());
                        if (!callingGraph.ContainsVertex(globalCalledFunc))
                        {
                            throw new FunctionMetadataException(
                                      "Unknow reference of the foreign target in edge <" + sourceFunc + "," + calledFunc +
                                      "> when trying to add contract " + contractMetadataTemplate.FullName +
                                      " into calling graph, consider the target function does not exist in the metadata");
                        }

                        callingGraph.RemoveEdge(new Edge <string>(sourceFunc, globalCalledFunc));
                    }
                }
            }

            foreach (var localVertex in contractMetadataTemplate.LocalCallingGraph.Vertices)
            {
                var globalVertex =
                    Replacement.ReplaceValueIntoReplacement(localVertex, Replacement.This,
                                                            contractAddress.GetFormatted());
                callingGraph.AddVertex(globalVertex);
                foreach (var outEdge in contractMetadataTemplate.LocalCallingGraph.OutEdges(localVertex))
                {
                    var toVertex = Replacement.ReplaceValueIntoReplacement(outEdge.Target, Replacement.This,
                                                                           contractAddress.GetFormatted());

                    callingGraph.RemoveEdge(new Edge <string>(globalVertex, toVertex));
                    callingGraph.RemoveVertex(globalVertex);
                    callingGraph.RemoveVertex(toVertex);
                }

                callingGraph.RemoveVertex(globalVertex);
            }

            return(callingGraph);
        }