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package com.sun.tools.jxc;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Javac;
import org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter;
import org.apache.tools.ant.types.Commandline;
import javax.annotation.processing.Processor;
import javax.tools.DiagnosticCollector;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileObject;
import javax.tools.StandardJavaFileManager;
import javax.tools.ToolProvider;
import java.io.File;
import java.util.Arrays;
import java.util.Collections;
/**
* Base class for tasks that eventually invoke annotation processing.
*
* @author Kohsuke Kawaguchi
*/
public abstract class ApBasedTask extends Javac {
/**
* Implemented by the derived class to set up command line switches passed to annotation processing.
*/
protected abstract void setupCommandlineSwitches(Commandline cmd);
private abstract class ApAdapter extends DefaultCompilerAdapter {
protected ApAdapter() {
setJavac(ApBasedTask.this);
}
protected Commandline setupModernJavacCommandlineSwitches(Commandline cmd) {
super.setupModernJavacCommandlineSwitches(cmd);
setupCommandlineSwitches(cmd);
return cmd;
}
protected void logAndAddFilesToCompile(Commandline cmd) {
attributes.log("Compilation " + cmd.describeArguments(),
Project.MSG_VERBOSE);
StringBuilder niceSourceList = new StringBuilder("File");
if (compileList.length != 1) {
niceSourceList.append("s");
}
niceSourceList.append(" to be compiled:");
niceSourceList.append(lSep);
StringBuilder tempbuilder = new StringBuilder();
for (File aCompileList : compileList) {
String arg = aCompileList.getAbsolutePath();
// cmd.createArgument().setValue(arg); --> we don't need compile list withing cmd arguments
tempbuilder.append(" ").append(arg).append(lSep);
niceSourceList.append(tempbuilder);
tempbuilder.setLength(0);
}
attributes.log(niceSourceList.toString(), Project.MSG_VERBOSE);
}
}
/**
* Adapter to invoke Ap internally.
*/
private final class InternalApAdapter extends ApAdapter {
public boolean execute() throws BuildException {
try {
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
DiagnosticCollector diagnostics = new DiagnosticCollector();
StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null, null);
Iterable<? extends JavaFileObject> compilationUnits = fileManager.getJavaFileObjectsFromFiles(Arrays.asList(compileList));
JavaCompiler.CompilationTask task = compiler.getTask(
null,
fileManager,
diagnostics,
Arrays.asList(setupModernJavacCommand().getArguments()),
null,
compilationUnits);
task.setProcessors(Collections.singleton(getProcessor()));
return task.call();
} catch (BuildException e) {
throw e;
} catch (Exception ex) {
throw new BuildException("Error starting ap", ex, location);
}
}
}
/**
* Creates a factory that does the actual job.
*/
protected abstract Processor getProcessor();
// /**
// * Adapter to invoke annotation processing externally.
// */
// private final class ExternalAptAdapter extends AptAdapter {
// public boolean execute() throws BuildException {
// Commandline cmd = setupModernJavacCommand();
// return executeExternalCompile(cmd.getArguments(),-1)==0;
// }
// }
protected void compile() {
if (compileList.length == 0) return;
log(getCompilationMessage() + compileList.length + " source file"
+ (compileList.length == 1 ? "" : "s"));
if (listFiles) {
for (File aCompileList : compileList) {
String filename = aCompileList.getAbsolutePath();
log(filename);
}
}
ApAdapter ap = new InternalApAdapter();
// if(isForkedJavac())
// ap = new ExternalApAdapter();
// else
// compile
if (!ap.execute()) {
if (failOnError) {
throw new BuildException(getFailedMessage(), getLocation());
} else {
log(getFailedMessage(), Project.MSG_ERR);
}
}
}
protected abstract String getCompilationMessage();
protected abstract String getFailedMessage();
}