| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package dexfuzz.program; |
| |
| import dexfuzz.Log; |
| import dexfuzz.program.mutators.CodeMutator; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.IOException; |
| |
| /** |
| * Responsible for serializing mutations, allowing replay of mutations, and searching |
| * for a minimal set of mutations. |
| */ |
| public class MutationSerializer { |
| public static String getMutationString(Mutation mutation) { |
| StringBuilder builder = new StringBuilder(); |
| builder.append(mutation.mutatorClass.getCanonicalName()).append(" "); |
| builder.append(mutation.mutatableCodeIdx).append(" "); |
| builder.append(mutation.getString()); |
| return builder.toString(); |
| } |
| |
| public static void writeMutation(BufferedWriter writer, Mutation mutation) throws IOException { |
| // Write out the common fields. |
| writer.write(mutation.mutatorClass.getCanonicalName() + " " |
| + mutation.mutatableCodeIdx + " "); |
| |
| // Use the mutation's own function to write out the rest of the fields. |
| writer.write(mutation.getString() + "\n"); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static Mutation readMutation(BufferedReader reader) throws IOException { |
| String line = reader.readLine(); |
| String[] fields = null; |
| if (line != null) { |
| fields = line.split(" "); |
| } else { |
| Log.errorAndQuit("Could not read line during mutation loading."); |
| } |
| |
| // Read the mutator's class name |
| String mutatorClassName = fields[0]; |
| |
| // Get the class for that mutator |
| Class<? extends CodeMutator> mutatorClass = null; |
| try { |
| mutatorClass = (Class<? extends CodeMutator>) Class.forName(mutatorClassName); |
| } catch (ClassNotFoundException e) { |
| Log.errorAndQuit("Cannot find a mutator class called: " + mutatorClassName); |
| } |
| |
| Mutation mutation = null; |
| try { |
| mutation = mutatorClass.newInstance().getNewMutation(); |
| } catch (InstantiationException e) { |
| Log.errorAndQuit("Unable to instantiate " + mutatorClassName |
| + " using default constructor."); |
| } catch (IllegalAccessException e) { |
| Log.errorAndQuit("Unable to access methods in " + mutatorClassName + "."); |
| } |
| |
| if (mutation == null) { |
| Log.errorAndQuit("Unable to get Mutation for Mutator: " + mutatorClassName); |
| } |
| |
| // Populate the common fields of the mutation. |
| mutation.mutatorClass = mutatorClass; |
| // The Program must set this later, using the mutatable_code_idx |
| // into its list of MutatableCodes. |
| mutation.mutatableCode = null; |
| mutation.mutatableCodeIdx = Integer.parseInt(fields[1]); |
| |
| // Use the mutation's own method to read the rest of the fields. |
| mutation.parseString(fields); |
| |
| return mutation; |
| } |
| } |