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Let the user choose main class, when none is open #5536

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Jun 9, 2023
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Let the user choose main class, when none is open #5536

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106 changes: 102 additions & 4 deletions ...ver/src/org/netbeans/modules/java/lsp/server/debugging/launch/NbLaunchRequestHandler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -23,26 +23,45 @@
import java.net.URISyntaxException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Consumer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import javax.lang.model.element.TypeElement;

import org.apache.commons.lang3.StringUtils;
import org.eclipse.lsp4j.debug.OutputEventArguments;
import org.eclipse.lsp4j.debug.Source;
import org.eclipse.lsp4j.debug.TerminatedEventArguments;
import org.eclipse.lsp4j.jsonrpc.messages.ResponseErrorCode;
import org.netbeans.api.java.classpath.ClassPath;
import org.netbeans.api.java.project.JavaProjectConstants;
import org.netbeans.api.java.source.ClasspathInfo;
import org.netbeans.api.java.source.ElementHandle;
import org.netbeans.api.java.source.SourceUtils;
import org.netbeans.api.project.ProjectUtils;
import org.netbeans.modules.java.lsp.server.LspServerState;
import org.netbeans.modules.java.lsp.server.debugging.DebugAdapterContext;
import org.netbeans.modules.java.lsp.server.debugging.NbSourceProvider;
import org.netbeans.modules.java.lsp.server.debugging.utils.ErrorUtilities;
import org.netbeans.spi.java.classpath.support.ClassPathSupport;
import org.openide.DialogDescriptor;
import org.openide.DialogDisplayer;
import org.openide.NotifyDescriptor;
import org.openide.NotifyDescriptor.QuickPick.Item;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileUtil;
import org.openide.util.Lookup;
import org.openide.util.Utilities;
import org.openide.util.lookup.Lookups;

/**
*
Expand Down Expand Up @@ -71,10 +90,89 @@ public CompletableFuture<Void> launch(Map<String, Object> launchArguments, Debug

if (!isNative && (StringUtils.isBlank(mainFilePath) && StringUtils.isBlank(filePath) && StringUtils.isBlank(projectFilePath)
|| modulePaths.isEmpty() && classPaths.isEmpty())) {
ErrorUtilities.completeExceptionally(resultFuture,
"Failed to launch debuggee VM. Missing mainClass or modulePaths/classPaths options in launch configuration.",
ResponseErrorCode.ServerNotInitialized);
return resultFuture;
if (modulePaths.isEmpty() && classPaths.isEmpty()) {
ErrorUtilities.completeExceptionally(resultFuture,
"Failed to launch debuggee VM. Missing modulePaths/classPaths options in launch configuration.",
ResponseErrorCode.ServerNotInitialized);
return resultFuture;
}
if (StringUtils.isBlank(mainFilePath) && StringUtils.isBlank(filePath) && StringUtils.isBlank(projectFilePath)) {
LspServerState state = Lookup.getDefault().lookup(LspServerState.class);
if (state == null) {
ErrorUtilities.completeExceptionally(resultFuture,
"Failed to launch debuggee VM. Missing mainClass or modulePaths/classPaths options in launch configuration.",
ResponseErrorCode.ServerNotInitialized);
return resultFuture;
}
return state.openedProjects().thenCompose(prjs -> {
FileObject[] sourceRoots =
Arrays.stream(prjs)
.flatMap(p -> Arrays.stream(ProjectUtils.getSources(p).getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA)))
.map(sg -> sg.getRootFolder())
.toArray(s -> new FileObject[s]);

List<ElementHandle<TypeElement>> mainClasses =
new ArrayList<>(SourceUtils.getMainClasses(sourceRoots));
CompletableFuture<Void> currentResult = new CompletableFuture<>();
Consumer<ElementHandle<TypeElement>> handleSelectedMainClass = mainClass -> {
Map<String, Object> newLaunchArguments = new HashMap<>(launchArguments);
ClasspathInfo cpInfo = ClasspathInfo.create(ClassPath.EMPTY, ClassPath.EMPTY, ClassPathSupport.createClassPath(sourceRoots));
FileObject mainClassFile = SourceUtils.getFile(mainClass, cpInfo);
if (mainClassFile == null) {
ErrorUtilities.completeExceptionally(currentResult,
"Cannot find source file for the selected main class.",
ResponseErrorCode.ServerNotInitialized);
} else {
newLaunchArguments.put("mainClass", mainClassFile.toURI().toString());
launch(newLaunchArguments, context).thenAccept(res -> currentResult.complete(res))
.exceptionally(t -> {
currentResult.completeExceptionally(t);
return null;
});
}
};

switch (mainClasses.size()) {
case 0:
String message = "Failed to launch debuggee VM. No mainClass provided.";
if (SourceUtils.isScanInProgress()) {
message += " Indexing is in progress, please try again when the indexing is completed.";
}
ErrorUtilities.completeExceptionally(currentResult,
message,
ResponseErrorCode.ServerNotInitialized);
break;
case 1:
handleSelectedMainClass.accept(mainClasses.get(0));
break;
case 2:
List<NotifyDescriptor.QuickPick.Item> mainClassItems =
mainClasses.stream()
.map(eh -> new Item(eh.getQualifiedName(), eh.getQualifiedName()))
.collect(Collectors.toList());

NotifyDescriptor.QuickPick pick = new DialogDescriptor.QuickPick("Please choose main class",
"Choose main class", mainClassItems, false);
DialogDisplayer.getDefault().notifyFuture(pick).thenAccept(acceptedPick -> {
for (int i = 0; i < acceptedPick.getItems().size(); i++) {
NotifyDescriptor.QuickPick.Item item = acceptedPick.getItems().get(i);
if (item.isSelected()) {
ElementHandle<TypeElement> mainClass = mainClasses.get(i);
handleSelectedMainClass.accept(mainClass);
break;
}
}
}).exceptionally(t -> {
ErrorUtilities.completeExceptionally(currentResult,
"Failed to launch debuggee VM. No mainClass provided.",
ResponseErrorCode.ServerNotInitialized);
return null;
});
break;
}
return currentResult;
});
}
}
if (StringUtils.isBlank((String)launchArguments.get("encoding"))) {
context.setDebuggeeEncoding(StandardCharsets.UTF_8);
Expand Down