1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package dexfuzz.program; 18 19 import dexfuzz.program.mutators.CodeMutator; 20 21 /** 22 * Mutation should be subclassed by an AssociatedMutation in each CodeMutator, 23 * which will describe the parameters of the mutation, and override the getString() 24 * and parseString() methods here to allow serialization of the mutations. 25 */ 26 public abstract class Mutation { 27 28 public MutatableCode mutatableCode; 29 30 // The first field of any serialized mutation - the mutator that uses it. 31 public Class<? extends CodeMutator> mutatorClass; 32 // The second field of any serialized mutation... 33 // This is an index into the Program's list of MutatableCodes 34 // i.e., it is NOT an index into the DEX file's CodeItems! 35 public int mutatableCodeIdx; 36 37 public void setup(Class<? extends CodeMutator> mutatorClass, MutatableCode mutatableCode) { 38 this.mutatorClass = mutatorClass; 39 this.mutatableCode = mutatableCode; 40 this.mutatableCodeIdx = mutatableCode.mutatableCodeIdx; 41 } 42 /** 43 * Serializes the field(s) of the mutation to string format. 44 * The fields are separated by a space. 45 * @return the serialized string representation of the field(s) of the mutation. 46 */ 47 public abstract String getString(); 48 49 /** 50 * Deserializes the strings back to the field(s) of the mutation, 51 * given a string array as its argument. The string array 52 * contains the individual elements which were previously constructed by 53 * getstring() method. elements[0] stores the class name and elements[1] 54 * stores the mutable code index which are predefined in MutationSerializer.java. 55 * Users can deserialize the string representation in elements[2] and so forth. 56 * @param elements string array with serialized representations of the field(s) of the mutation. 57 */ 58 public abstract void parseString(String[] elements); 59 }
