perflib/src/main/java/com/android/tools/perflib/heap/StackFrame.java

/*
 * Copyright (C) 2008 Google Inc.
 *
 * 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 com.android.tools.perflib.heap;

import com.android.annotations.NonNull;

public class StackFrame {

    public static final int NO_LINE_NUMBER = 0;

    public static final int UNKNOWN_LOCATION = -1;

    public static final int COMPILED_METHOD = -2;

    public static final int NATIVE_METHOD = -3;

    long mId;

    String mMethodName;

    String mSignature;

    String mFilename;

    int mSerialNumber;

    int mLineNumber;

    public StackFrame(long id, String method, String sig, String file,
            int serial, int line) {
        mId = id;
        mMethodName = method;
        mSignature = sig;
        mFilename = file;
        mSerialNumber = serial;
        mLineNumber = line;
    }

    @NonNull
    private String lineNumberString() {
        switch (mLineNumber) {
            case NO_LINE_NUMBER:
                return "No line number";
            case UNKNOWN_LOCATION:
                return "Unknown line number";
            case COMPILED_METHOD:
                return "Compiled method";
            case NATIVE_METHOD:
                return "Native method";

            default:
                return String.valueOf(mLineNumber);
        }
    }

    @NonNull
    public final String toString() {
        return mMethodName
                + mSignature.replace('/', '.')
                + " - "
                + mFilename + ":"
                + lineNumberString();
    }
}