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Diffstat (limited to 'anttasks/src/com/android/ant/BaseTask.java')
-rw-r--r-- | anttasks/src/com/android/ant/BaseTask.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/anttasks/src/com/android/ant/BaseTask.java b/anttasks/src/com/android/ant/BaseTask.java new file mode 100644 index 0000000..2126d3f --- /dev/null +++ b/anttasks/src/com/android/ant/BaseTask.java @@ -0,0 +1,70 @@ +/* + * Copyright (C) 2009 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 com.android.ant; + +import org.apache.tools.ant.BuildException; +import org.apache.tools.ant.Task; + +import java.io.File; +import java.util.ArrayList; + +/** + * A base class for the ant task that contains logic for handling dependency files + */ +public class BaseTask extends Task { + + private DependencyGraph mDependencies; + + /* + * (non-Javadoc) + * + * Executes the loop. Based on the values inside default.properties, this will + * create alternate temporary ap_ files. + * + * @see org.apache.tools.ant.Task#execute() + */ + @Override + public void execute() throws BuildException { + + } + + /** + * Set up the dependency graph by passing it the location of the ".d" file + * @param dependencyFile path to the dependency file to use + * @param watchPaths a list of folders to watch for new files + * @return true if the dependency graph was sucessfully initialized + */ + protected boolean initDependencies(String dependencyFile, ArrayList<File> watchPaths) { + File depFile = new File(dependencyFile); + if (depFile.exists()) { + mDependencies = new DependencyGraph(dependencyFile, watchPaths); + return true; + } else { + return false; + } + } + + /** + * Wrapper check to see if we need to execute this task at all + * @return true if the DependencyGraph reports that our prereqs or targets + * have changed since the last run + */ + protected boolean dependenciesHaveChanged() { + assert mDependencies != null : "Dependencies have not been initialized"; + return mDependencies.dependenciesHaveChanged(); + } +} |