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      1 /*
      2  * Copyright (C) 2010 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.apkcheck;
     18 
     19 import java.util.ArrayList;
     20 import java.util.HashMap;
     21 
     22 /**
     23  * Container representing a method with parameters.
     24  */
     25 public class MethodInfo {
     26     private String mName;
     27     private String mReturn;
     28     private String mNameAndDescriptor;
     29     private ArrayList<String> mParameters;
     30     private boolean mParametersNormalized;
     31 
     32     /**
     33      * Constructs MethodInfo.  Tuck the method return type away for
     34      * later construction of the signature.
     35      */
     36     public MethodInfo(String name, String returnType) {
     37         mName = name;
     38         mReturn = returnType;
     39         mParameters = new ArrayList<String>();
     40     }
     41 
     42     /**
     43      * Returns the method signature.  This is generated when needed.
     44      */
     45     public String getNameAndDescriptor() {
     46         if (mNameAndDescriptor == null) {
     47             StringBuilder newSig = new StringBuilder(mName);
     48             newSig.append(":(");
     49             for (int i = 0; i < mParameters.size(); i++) {
     50                 String humanType = mParameters.get(i);
     51                 String sigType = TypeUtils.typeToDescriptor(humanType);
     52                 newSig.append(sigType);
     53             }
     54             newSig.append(")");
     55             newSig.append(TypeUtils.typeToDescriptor(mReturn));
     56             mNameAndDescriptor = newSig.toString();
     57         }
     58         return mNameAndDescriptor;
     59     }
     60 
     61     /**
     62      * Adds a parameter to the method.  The "type" is a primitive or
     63      * object type, formatted in human-centric form.  For now we just
     64      * store it.
     65      */
     66     public void addParameter(String type) {
     67         mParameters.add(type);
     68         if (mNameAndDescriptor != null) {
     69             System.err.println("WARNING: late add of params to method");
     70             mNameAndDescriptor = null;      // force regen
     71         }
     72     }
     73 
     74     /**
     75      * Normalizes the types in parameter lists to unambiguous binary form.
     76      *
     77      * The public API file must be fully parsed before calling here,
     78      * because we need the full set of package names.
     79      */
     80     public void normalizeTypes(ApiList apiList) {
     81         if (!mParametersNormalized) {
     82             mReturn = TypeUtils.ambiguousToBinaryName(mReturn, apiList);
     83 
     84             for (int i = 0; i < mParameters.size(); i++) {
     85                 String fixed = TypeUtils.ambiguousToBinaryName(mParameters.get(i),
     86                         apiList);
     87                 mParameters.set(i, fixed);
     88             }
     89 
     90             mNameAndDescriptor = null;      // force regen
     91             mParametersNormalized = true;
     92         }
     93     }
     94 }
     95 
     96