--- /dev/null
+package net.sf.j2s.core;
+
+import java.util.Arrays;
+import java.util.Properties;
+
+import org.eclipse.jdt.core.IJavaProject;
+import org.eclipse.jdt.core.compiler.BuildContext;
+import org.eclipse.jdt.core.compiler.ReconcileContext;
+
+/**
+ * New Java2Script compiler uses org.eclipse.jdt.core.compiler.CompilationParticipant instead of builder
+ *
+ * source: https://github.com/eclipse/org.aspectj.shadows/blob/master/org.eclipse.jdt.core/model/org/eclipse/jdt/core/compiler/CompilationParticipant.java
+ *
+ * @author hansonr
+ *
+ */
+public class Java2ScriptCompilationParticipant extends org.eclipse.jdt.core.compiler.CompilationParticipant {
+ private BuildContext[] javaFiles;
+ private boolean isCleanBuild;
+
+ public Java2ScriptCompilationParticipant() {
+ System.out.println("CompilationParticipant started");
+ }
+
+ /**
+ * Returns whether this participant is active for a given project.
+ * <p>
+ * Default is to return <code>false</code>.
+ * </p>
+ * <p>
+ * For efficiency, participants that are not interested in the given project
+ * should return <code>false</code> for that project.
+ * </p>
+ *
+ * @param project
+ * the project to participate in
+ * @return whether this participant is active for a given project
+ */
+ public boolean isActive(IJavaProject project) {
+ boolean isj2s = Java2ScriptCompiler.isActive(project);
+ System.out.println("isActive " + isj2s + " " + project.getProject().getLocation());
+ return isj2s;
+ }
+
+ /**
+ * Notifies this participant that a build is about to start and provides it
+ * the opportunity to create missing source folders for generated source
+ * files. Additional source folders should be marked as optional so the
+ * project can be built when the folders do not exist. Only sent to
+ * participants interested in the project.
+ * <p>
+ * Default is to return <code>READY_FOR_BUILD</code>.
+ * </p>
+ *
+ * @see #buildFinished(IJavaProject project)
+ * @param project
+ * the project about to build
+ * @return READY_FOR_BUILD or NEEDS_FULL_BUILD
+ */
+ public int aboutToBuild(IJavaProject project) {
+ System.out.println("aboutToBuild " + project.getProject().getLocation());
+ return READY_FOR_BUILD;
+ }
+
+ /**
+ * Notifies this participant that a clean is about to start and provides it
+ * the opportunity to delete generated source files. Only sent to
+ * participants interested in the project.
+ *
+ * @param project
+ * the project about to be cleaned
+ */
+ public void cleanStarting(IJavaProject project) {
+ System.out.println("cleanStarting " + project.getProject().getLocation());
+ isCleanBuild = true;
+ }
+
+ /**
+ * Notifies this participant that a compile operation is about to start and
+ * provides it the opportunity to generate source files based on the source
+ * files about to be compiled. When isBatchBuild is true, then files
+ * contains all source files in the project. Only sent to participants
+ * interested in the current build project.
+ *
+ * @param files
+ * is an array of BuildContext
+ * @param isBatch
+ * identifies when the build is a batch build
+ */
+ public void buildStarting(BuildContext[] files, boolean isBatch) {
+ if (javaFiles != null) {
+ BuildContext[] concat = Arrays.copyOf(javaFiles, javaFiles.length + files.length);
+ System.arraycopy(files, 0, concat , javaFiles.length, files.length);
+ javaFiles = concat;
+ } else {
+ javaFiles = files;
+ }
+ System.out.println("buildStarting " + files.length + " files, isBatch=" + isBatch);
+ }
+
+ /**
+ * Notifies this participant that a build has finished for the project. This
+ * will be sent, even if buildStarting() was not sent when no source files
+ * needed to be compiled or the build failed. Only sent to participants
+ * interested in the project.
+ *
+ * @param project
+ * the project about to build
+ * @since 3.4
+ */
+ public void buildFinished(IJavaProject project) {
+ if (javaFiles != null) {
+ Java2ScriptCompiler j2sCompiler = new Java2ScriptCompiler();
+ j2sCompiler.startBuild(isCleanBuild);
+ if (!j2sCompiler.initializeProject(project, true)) {
+ System.out.println(".j2s disabled");
+ return;
+ }
+ System.out.println("building JavaScript " + project.getProject().getLocation());
+ for (int i = 0; i < javaFiles.length; i++) {
+ System.out.println("[" + (i+1) + "/" + javaFiles.length + "] transpiling " + javaFiles[i]);
+// trying to keep the progess monitor running - didn't work
+// try {
+// Thread.currentThread().sleep(1);
+// } catch (InterruptedException e) {
+// // ignore
+// }
+ if (!j2sCompiler.compileToJavaScript(javaFiles[i].getFile())) {
+ System.out.println("Error processing " + javaFiles[i].getFile());
+ break;
+ }
+ }
+ javaFiles = null;
+ System.out.println("build finished " + project.getProject().getLocation());
+ }
+ isCleanBuild = false;
+ }
+
+ /**
+ * Returns whether this participant is interested in only Annotations.
+ * <p>
+ * Default is to return <code>false</code>.
+ * </p>
+ *
+ * @return whether this participant is interested in only Annotations.
+ */
+ public boolean isAnnotationProcessor() {
+ return false;
+ }
+
+ /**
+ * Notifies this participant that a compile operation has found source files
+ * using Annotations. Only sent to participants interested in the current
+ * build project that answer true to isAnnotationProcessor(). Each
+ * BuildContext was informed whether its source file currently
+ * hasAnnotations().
+ *
+ * @param files
+ * is an array of BuildContext
+ */
+ public void processAnnotations(BuildContext[] files) {
+ // nothing to do
+ }
+
+ /**
+ * Notifies this participant that a reconcile operation is happening. The
+ * participant can act on this reconcile operation by using the given
+ * context. Other participant can then see the result of this participation
+ * on this context.
+ * <p>
+ * Note that a participant should not modify the buffer of the working copy
+ * that is being reconciled.
+ * </p>
+ * <p>
+ * Default is to do nothing.
+ * </p>
+ *
+ * @param context
+ * the reconcile context to act on
+ */
+ public void reconcile(ReconcileContext context) {
+ // fired whenever a source file is changed -- before it is saved
+ }
+}
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