feat: add build.jbang support

.github/workflows/CI.yml

@@ -47,7 +47,7 @@ jobs:
  dev.jbang.eclipse.site/target/flat-repository/*
  - name: Upload code coverage
  uses: codecov/codecov-action@v3
- if: github.ref == 'refs/heads/main' && runner.os == 'Linux'
+ if: runner.os == 'Linux'
  with:
  files: ./coverage/target/site/jacoco-aggregate/jacoco.xml
  flags: ${{ runner.os }} # optional

dev.jbang.eclipse.core/plugin.xml

@@ -16,7 +16,7 @@
  </runtime>
  <builder id="dev.jbang.eclipse.core.jbangbuilder"/>
  </extension>
-<extension point="org.eclipse.core.resources.markers"
+ <extension point="org.eclipse.core.resources.markers"
  id="dev.jbang.eclipse.core.jbangproblem"
  name="JBang Problem">
  <super type="org.eclipse.core.resources.problemmarker"/>

dev.jbang.eclipse.core/src/main/java/dev/jbang/eclipse/core/internal/JBangClasspathUtils.java

@@ -98,7 +98,7 @@ static File getContainerStateFile(IProject project) {
 
 
  public static boolean isOnClasspath(IJavaProject javaProject, IFile script) throws CoreException {
- if (script != null && JavaCore.isJavaLikeFileName(script.getName())) {
+ if (script != null && (JavaCore.isJavaLikeFileName(script.getName()) || JBangFileUtils.isJBangBuildFile(script)) ) {
  IClasspathEntry[] entries = javaProject.getRawClasspath();
  for (IClasspathEntry entry : entries) {
  if (entry.getEntryKind() == IClasspathEntry.CPE_SOURCE &&
@@ -110,6 +110,24 @@ public static boolean isOnClasspath(IJavaProject javaProject, IFile script) thro
  return false;
  }
 
+ public static boolean isOnOutputLocation(IJavaProject javaProject, IFile script) throws CoreException {
+ if (script != null) {
+ if (javaProject.getOutputLocation() != null && javaProject.getOutputLocation().isPrefixOf(script.getFullPath())) {
+ return true;
+ }
+
+ IClasspathEntry[] entries = javaProject.getRawClasspath();
+ for (IClasspathEntry entry : entries) {
+ if (entry.getEntryKind() == IClasspathEntry.CPE_SOURCE &&
+ entry.getOutputLocation() != null &&
+ entry.getOutputLocation().isPrefixOf(script.getFullPath())) {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
 
  public static boolean hasAttribute(IClasspathEntry entry, String attribute) throws CoreException {
  for (IClasspathAttribute attr : entry.getExtraAttributes()) {

dev.jbang.eclipse.core/src/main/java/dev/jbang/eclipse/core/internal/JBangConstants.java

@@ -11,23 +11,31 @@ public final class JBangConstants {
  public static final String BUILDER_ID = PLUGIN_ID + ".jbangbuilder"; //$NON-NLS-1$
 
  public static final String MARKER_ID = PLUGIN_ID + ".jbangproblem"; //$NON-NLS-1$
- 
+
  public static final String MARKER_RESOLUTION_ID = MARKER_ID + ".resolution"; //$NON-NLS-1$
-
- private static final String PREFIX = "dev.jbang."; 
-
- /** String, list of configured JBang installations separated by '|', see {@link JBangRuntimeManager} */
- public static final String P_RUNTIMES = PREFIX + "runtimes"; //$NON-NLS-1$
 
- /** Root node of extended JBang installation attributes, see {@link JBangRuntimeManager} */
- public static final String P_RUNTIMES_NODE = PREFIX + "runtimesNodes"; //$NON-NLS-1$
+ private static final String PREFIX = "dev.jbang.";
 
- /** String */
- public static final String P_DEFAULT_RUNTIME = PREFIX + "defaultRuntime"; //$NON-NLS-1$
+ /**
+ * String, list of configured JBang installations separated by '|', see
+ * {@link JBangRuntimeManager}
+ */
+ public static final String P_RUNTIMES = PREFIX + "runtimes"; //$NON-NLS-1$
 
+ /**
+ * Root node of extended JBang installation attributes, see
+ * {@link JBangRuntimeManager}
+ */
+ public static final String P_RUNTIMES_NODE = PREFIX + "runtimesNodes"; //$NON-NLS-1$
+
+ public static final String P_DEFAULT_RUNTIME = PREFIX + "defaultRuntime"; //$NON-NLS-1$
+
+ public static final String JBANG_BUILD = "build.jbang";
 
- private JBangConstants(){
- //no instanciation
- }
+ public static final String JBANG_MAIN = "main.java";
+
+ private JBangConstants() {
+ // no instanciation
+ }
 
 }

dev.jbang.eclipse.core/src/main/java/dev/jbang/eclipse/core/internal/JBangFileUtils.java

@@ -1,10 +1,7 @@
 package dev.jbang.eclipse.core.internal;
 
-import java.io.BufferedInputStream;
 import java.io.BufferedReader;
-import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.Reader;
 import java.nio.file.Files;
@@ -15,7 +12,6 @@
 
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IResource;
-import org.eclipse.core.runtime.CoreException;
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.core.dom.ASTParser;
 import org.eclipse.jdt.core.dom.CompilationUnit;
@@ -67,6 +63,13 @@ public static boolean isJBangFile(IResource resource) {
  return false;
  }
 
+ public static boolean isJBangBuildFile(IResource resource) {
+ if (!(resource instanceof IFile)) {
+ return false;
+ }
+ return JBangConstants.JBANG_BUILD.equals(((IFile) resource).getName());
+ }
+
  public static boolean isJBangFile(Path file) {
  if (!(Files.isRegularFile(file))) {
  return false;
@@ -84,6 +87,20 @@ public static boolean isJBangFile(Path file) {
  return false;
  }
 
+ public static boolean isJBangBuildFile(Path file) {
+ if (!(Files.isRegularFile(file))) {
+ return false;
+ }
+ return JBangConstants.JBANG_BUILD.equals(file.getFileName().toString());
+ }
+
+ public static boolean isMainFile(Path file) {
+ if (!(Files.isRegularFile(file))) {
+ return false;
+ }
+ return JBangConstants.JBANG_MAIN.equals(file.getFileName().toString());
+ }
+
  public static String getJavaVersion(String line) {
  return getMatch(JAVA_INSTRUCTION, line);
  }
@@ -114,28 +131,33 @@ private static String getMatch(Pattern pattern, String line) {
 
  public static String getPackageName(IJavaProject javaProject, IFile file) {
  //TODO probably not the most efficient way to get the package name as this reads the whole file;
- char[] source = null;
- try (InputStream is = new BufferedInputStream(file.getContents(true));
- ByteArrayOutputStream result = new ByteArrayOutputStream()) {
- byte[] buffer = new byte[1024];
- for (int length; (length = is.read(buffer)) != -1; ) {
- result.write(buffer, 0, length);
- }
- source = result.toString(file.getCharset()).toCharArray();
- } catch (IOException | CoreException e) {
+ var ast = createCompilationUnit(file);
+ if (ast != null) {
+ PackageDeclaration pkg = ast.getPackage();
+ if (pkg != null && pkg.getName() != null) {
+ return pkg.getName().getFullyQualifiedName();
+ }
+ }
+ return null;
+ }
+
+ public static CompilationUnit createCompilationUnit(IFile file) {
+ String content = null;
+ try {
+ content = ResourceUtil.getContent(file);
+ } catch (Exception e) {
  e.printStackTrace();
  }
- if (source == null) {
+ if (content == null) {
  return null;
  }
+ char[] source = content.toCharArray();
 
  ASTParser parser = ASTParser.newParser(IASTSharedValues.SHARED_AST_LEVEL);
- parser.setProject(javaProject);
  parser.setIgnoreMethodBodies(true);
  parser.setSource(source);
  CompilationUnit ast = (CompilationUnit) parser.createAST(null);
- PackageDeclaration pkg = ast.getPackage();
- return (pkg == null || pkg.getName() == null)? null :pkg.getName().getFullyQualifiedName();
+ return ast;
  }
 
  private static boolean hasJBangInstructions(Reader reader) throws IOException {

dev.jbang.eclipse.core/src/main/java/dev/jbang/eclipse/core/internal/builder/JBangBuilder.java

@@ -1,6 +1,8 @@
 package dev.jbang.eclipse.core.internal.builder;
 
 import static dev.jbang.eclipse.core.JBangCorePlugin.logInfo;
+import static dev.jbang.eclipse.core.internal.JBangFileUtils.createCompilationUnit;
+import static dev.jbang.eclipse.core.internal.JBangFileUtils.isJBangBuildFile;
 import static dev.jbang.eclipse.core.internal.JBangFileUtils.isJBangFile;
 
 import java.util.ArrayList;
@@ -26,6 +28,7 @@
 import org.eclipse.jdt.core.manipulation.CoreASTProvider;
 
 import dev.jbang.eclipse.core.JBangCorePlugin;
+import dev.jbang.eclipse.core.internal.ResourceUtil;
 import dev.jbang.eclipse.core.internal.project.JBangProject;
 import dev.jbang.eclipse.core.internal.project.ProjectConfigurationManager;
 import dev.jbang.eclipse.core.internal.runtime.JBangRuntimesDiscoveryJob;
@@ -143,7 +146,7 @@ public boolean visit(IResourceDelta delta) {
  case IResourceDelta.CHANGED: {
  // if the content has changed clean + scan
  if ((delta.getFlags() & IResourceDelta.CONTENT) > 0) {
- if (isJBangFile(resource)) {
+ if (isJBangBuildFile(resource) || isJBangFile(resource)) {
  jbangFiles.add((IFile) resource);
  }
  return true;
@@ -166,21 +169,34 @@ void cleanMarkers(IProject p) {
 
  @SuppressWarnings("unchecked")
  static Integer getConfigHash(IFile file, IProgressMonitor monitor) throws CoreException {
- if (!"java".equals(file.getFileExtension())) {
+ if (!JavaCore.isJavaLikeFileName(file.getName()) && !isJBangBuildFile(file) ) {
  return null;
  }
- ICompilationUnit typeRoot = JavaCore.createCompilationUnitFrom(file);
- //FIXME This is uber slow. Once a file is saved, its AST is disposed, we're not benefiting from reusing a cached AST, 
- // hence pay the price of recomputing it from scratch
- CompilationUnit root = CoreASTProvider.getInstance().getAST(typeRoot, CoreASTProvider.WAIT_YES, monitor);
+
+ CompilationUnit root = null;
+ String source = null;
+ if (isJBangBuildFile(file)) {
+ root = createCompilationUnit(file);
+ source = ResourceUtil.getContent(file);
+ } else {
+ ICompilationUnit typeRoot = JavaCore.createCompilationUnitFrom(file);
+ if (typeRoot != null) {
+ //FIXME This is uber slow. Once a file is saved, its AST is disposed, we're not benefiting from reusing a cached AST, 
+ // hence pay the price of recomputing it from scratch
+ root = CoreASTProvider.getInstance().getAST(typeRoot, CoreASTProvider.WAIT_YES, monitor);
+ source = typeRoot.getSource(); 
+ }
+ }
  if (root == null) {
  return 0;
  }
- JBangConfigVisitor configCollector = new JBangConfigVisitor(typeRoot.getSource());
+
+ JBangConfigVisitor configCollector = new JBangConfigVisitor(source);
  root.accept(configCollector);
  for (Comment comment : (List<Comment>) root.getCommentList()) {
  comment.accept(configCollector);
  }
  return configCollector.getConfigElements().hashCode();
- } 
+ }
+
 }

dev.jbang.eclipse.core/src/main/java/dev/jbang/eclipse/core/internal/classpath/AnnotationProcessorUtils.java

@@ -12,7 +12,6 @@
 
 import java.io.File;
 import java.io.IOException;
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
@@ -21,14 +20,10 @@
 import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
-import java.util.stream.Collectors;
 
 import org.eclipse.core.resources.IProject;
-import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.Status;
-import org.eclipse.jdt.core.IJavaProject;
-import org.eclipse.jdt.core.JavaCore;
 
 import dev.jbang.eclipse.core.internal.classpath.AnnotationServiceLocator.ServiceEntry;
 

dev.jbang.eclipse.core/src/main/java/dev/jbang/eclipse/core/internal/expressions/JBangResourceTester.java

@@ -17,7 +17,7 @@ public class JBangResourceTester extends PropertyTester {
  public boolean test(Object receiver, String property, Object[] args, Object expectedValue) {
  if (receiver instanceof IResource) {
  IResource resource = (IResource) receiver; 
- boolean isJBangFile = JBangFileUtils.isJBangFile(resource);
+ boolean isJBangFile = JBangFileUtils.isJBangFile(resource) || JBangFileUtils.isJBangBuildFile(resource);
  return Objects.equals(isJBangFile, expectedValue);
  }
  return false;

dev.jbang.eclipse.core/src/main/java/dev/jbang/eclipse/core/internal/imports/ImportJBangScriptsJob.java

@@ -36,7 +36,7 @@ public IStatus runInWorkspace(IProgressMonitor monitor) {
  var configuration = new JBangProjectConfiguration();
  for (Path script : scripts) {
  try {
- if (JBangFileUtils.isJBangFile(script)) {
+ if (JBangFileUtils.isJBangFile(script) || JBangFileUtils.isJBangBuildFile(script)) {
  projectManager.createJBangProject(script, configuration, monitor);
  }
  } catch (Exception e) {

dev.jbang.eclipse.core/src/main/java/dev/jbang/eclipse/core/internal/project/ProjectConfigurationManager.java

@@ -38,14 +38,14 @@
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.core.IPackageFragmentRoot;
 import org.eclipse.jdt.core.JavaCore;
-import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jdt.launching.JavaRuntime;
 import org.eclipse.jdt.launching.environments.IExecutionEnvironment;
 import org.eclipse.jdt.launching.environments.IExecutionEnvironmentsManager;
 
 import dev.jbang.eclipse.core.JBangCorePlugin;
 import dev.jbang.eclipse.core.internal.JBangClasspathUtils;
 import dev.jbang.eclipse.core.internal.JBangConstants;
+import dev.jbang.eclipse.core.internal.JBangFileUtils;
 import dev.jbang.eclipse.core.internal.ProjectUtils;
 import dev.jbang.eclipse.core.internal.ResourceUtil;
 import dev.jbang.eclipse.core.internal.classpath.AnnotationProcessorUtils;
@@ -315,6 +315,9 @@ public JBangProject createJBangProject(java.nio.file.Path script, JBangProjectCo
 
  String fileName = script.getFileName().toString();
  String name = fileName; //fileName.substring(0, fileName.lastIndexOf("."));
+ if (JBangFileUtils.isJBangBuildFile(script) || JBangFileUtils.isMainFile(script)) {
+ name = script.getParent().getFileName().toString();
+ }
 
  IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(name);
  if (!project.exists()) {
@@ -353,7 +356,12 @@ public JBangProject createJBangProject(java.nio.file.Path script, JBangProjectCo
 
  javaProject.setOutputLocation(bin.getFullPath(), monitor);
 
- IFile mainFile = link(info.getBackingResource(), project, configuration, monitor);
+ IFile mainFile;
+ if (JBangFileUtils.isJBangBuildFile(script)) {
+ mainFile = link(script.toAbsolutePath().toString(), project, configuration, monitor);
+ } else {
+ mainFile = link(info.getBackingResource(), project, configuration, monitor);
+ }
  if (info.getSources() != null && !info.getSources().isEmpty()) {
  for (JBangFile s : info.getSources()) {
  link(s.originalResource, project, configuration, monitor);
@@ -398,12 +406,18 @@ private IFile link(String resource, String link, IProject project, JBangProjectC
  }
 
  public void synchronize(IFile file, IProgressMonitor monitor) throws CoreException {
- monitor.setTaskName("Updating JBang configuration from " + file.getName());
  //System.err.println(file + " configuration changed, checking jbang info");
- JBangProject jbp = getJBangProject(file.getProject(), monitor);
+ IProject project = file.getProject();
+ JBangProject jbp = getJBangProject(project, monitor);
  if (jbp == null) {
  return;
  }
+
+ if (isJavaProject(project) && JBangClasspathUtils.isOnOutputLocation(JavaCore.create(project), file)) {
+ return;
+ }
+ monitor.setTaskName("Updating JBang configuration from " + file.getName());
+
  jbp.setMainSourceFile(file);
  var jbang = jbp.getRuntime();
 
@@ -424,10 +438,12 @@ public void synchronize(IFile file, IProgressMonitor monitor) throws CoreExcepti
  });
  }
  }
-
  }
 
- private String getSource(IFile file) throws JavaModelException {
+ private String getSource(IFile file) throws CoreException {
+ if (JBangFileUtils.isJBangBuildFile(file)) {
+ return ResourceUtil.getContent(file);
+ }
  ICompilationUnit typeRoot = JavaCore.createCompilationUnitFrom(file);
  return typeRoot.getBuffer().getContents();
  }