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      1 /*
      2  * Copyright (C) 2009 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 com.android.dexdeps;
     18 
     19 public class MethodRef {
     20     private String mDeclClass, mReturnType, mMethodName;
     21     private String[] mArgTypes;
     22 
     23     /**
     24      * Initializes a new field reference.
     25      */
     26     public MethodRef(String declClass, String[] argTypes, String returnType,
     27             String methodName) {
     28         mDeclClass = declClass;
     29         mArgTypes = argTypes;
     30         mReturnType = returnType;
     31         mMethodName = methodName;
     32     }
     33 
     34     /**
     35      * Gets the name of the method's declaring class.
     36      */
     37     public String getDeclClassName() {
     38         return mDeclClass;
     39     }
     40 
     41     /**
     42      * Gets the method's descriptor.
     43      */
     44     public String getDescriptor() {
     45         return descriptorFromProtoArray(mArgTypes, mReturnType);
     46     }
     47 
     48     /**
     49      * Gets the method's name.
     50      */
     51     public String getName() {
     52         return mMethodName;
     53     }
     54 
     55     /**
     56      * Gets an array of method argument types.
     57      */
     58     public String[] getArgumentTypeNames() {
     59         return mArgTypes;
     60     }
     61 
     62     /**
     63      * Gets the method's return type.  Examples: "Ljava/lang/String;", "[I".
     64      */
     65     public String getReturnTypeName() {
     66         return mReturnType;
     67     }
     68 
     69     /**
     70      * Returns the method descriptor, given the argument and return type
     71      * prototype strings.
     72      */
     73     private static String descriptorFromProtoArray(String[] protos,
     74             String returnType) {
     75         StringBuilder builder = new StringBuilder();
     76 
     77         builder.append("(");
     78         for (int i = 0; i < protos.length; i++) {
     79             builder.append(protos[i]);
     80         }
     81 
     82         builder.append(")");
     83         builder.append(returnType);
     84 
     85         return builder.toString();
     86     }
     87 }
     88