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eclipse-jdtls · Nov 29, 2023 · fe175da · fe175da
1 parent 2afaa6c
commit fe175da
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diff --git a/org.eclipse.jdt.ls.core/plugin.xml b/org.eclipse.jdt.ls.core/plugin.xml
@@ -136,6 +136,9 @@
             <command
                   id="java.vm.getAllInstalls">
             </command>
+             <command
+                  id="java.project.resolveText">
+            </command>
       </delegateCommandHandler>
    </extension>
    <extension

diff --git a/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/JDTDelegateCommandHandler.java b/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/JDTDelegateCommandHandler.java
@@ -197,6 +197,8 @@ public Object executeCommand(String commandId, List<Object> arguments, IProgress
 					return new SmartDetectionHandler(smartDetectionParams).getLocation(monitor);
 				case VmCommand.GET_ALL_INSTALL_COMMAND_ID:
 					return VmCommand.getAllVmInstalls();
+				case "java.project.resolveText":
+					return PasteEventHandler.handleFilePasteEvent((String) arguments.get(0), (String) arguments.get(1), monitor);
 				default:
 					break;
 			}

diff --git a/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/handlers/PasteEventHandler.java b/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/handlers/PasteEventHandler.java
@@ -12,9 +12,11 @@
  *******************************************************************************/
 package org.eclipse.jdt.ls.core.internal.handlers;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
 import java.util.function.Function;
@@ -30,19 +32,25 @@
 import org.eclipse.jdt.core.IBuffer;
 import org.eclipse.jdt.core.IClassFile;
 import org.eclipse.jdt.core.ICompilationUnit;
+import org.eclipse.jdt.core.IJavaProject;
+import org.eclipse.jdt.core.IPackageFragment;
+import org.eclipse.jdt.core.IPackageFragmentRoot;
 import org.eclipse.jdt.core.ISourceRange;
 import org.eclipse.jdt.core.IType;
+import org.eclipse.jdt.core.JavaCore;
 import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jdt.core.WorkingCopyOwner;
 import org.eclipse.jdt.core.dom.AST;
 import org.eclipse.jdt.core.dom.ASTParser;
 import org.eclipse.jdt.core.dom.ASTVisitor;
 import org.eclipse.jdt.core.dom.CompilationUnit;
 import org.eclipse.jdt.core.dom.StringLiteral;
+import org.eclipse.jdt.core.dom.TypeDeclaration;
 import org.eclipse.jdt.internal.corext.refactoring.rename.RenameAnalyzeUtil;
 import org.eclipse.jdt.internal.corext.refactoring.util.TextChangeManager;
 import org.eclipse.jdt.ls.core.internal.JDTUtils;
 import org.eclipse.jdt.ls.core.internal.JavaLanguageServerPlugin;
+import org.eclipse.jdt.ls.core.internal.ProjectUtils;
 import org.eclipse.jdt.ls.core.internal.handlers.OrganizeImportsHandler.ImportCandidate;
 import org.eclipse.jdt.ls.core.internal.handlers.OrganizeImportsHandler.ImportSelection;
 import org.eclipse.jdt.ls.core.internal.text.correction.SourceAssistProcessor;
@@ -334,6 +342,78 @@ private static String getEol(String text) {
 		return text.contains("\r\n") ? "\r\n" : "\n";
 	}
 
+	public static String handleFilePasteEvent(String path, String content, IProgressMonitor monitor) throws JavaModelException {
+		String desiredPath = "";
+		final ASTParser parser = ASTParser.newParser(AST.getJLSLatest());
+		parser.setResolveBindings(false);
+		parser.setKind(ASTParser.K_COMPILATION_UNIT);
+		parser.setStatementsRecovery(true);
+		parser.setBindingsRecovery(false);
+		parser.setIgnoreMethodBodies(true);
+		parser.setEnvironment(new String[0], new String[0], null, true);
+		Map<String, String> javaOptions = JavaCore.getOptions();
+		parser.setCompilerOptions(javaOptions);
+		parser.setSource(content.toCharArray());
+		CompilationUnit root = (CompilationUnit) parser.createAST(monitor);
+		// Check for package, import, and/or type declaration to determine if java file
+		if (root != null && (root.getPackage() != null || !root.imports().isEmpty() || !root.types().isEmpty())) {
+			String pathRoot = path;
+			if (root.getPackage() != null) {
+				String packageName = root.getPackage().getName().toString();
+				IJavaProject[] projects = ProjectUtils.getJavaProjects();
+				boolean pathFound = false;
+				String partialPathAddition = "";
+				for (int i = 0; i < projects.length; i++) {
+					if (!projects[i].getElementName().equals("jdt.ls-java-project") && !pathFound) {
+						IPackageFragment[] packages = projects[i].getPackageFragments();
+						for (int j = 0; j < packages.length; j++) {
+							if (packages[j].getKind() == IPackageFragmentRoot.K_SOURCE && !packages[j].isDefaultPackage()) {
+								pathRoot = packages[j].getParent().getResource().getLocation().toOSString();
+								String name = packages[j].getElementName();
+								if (name.equals(packageName)) {
+									desiredPath = packages[j].getResource().getLocation().toOSString();
+									pathFound = true;
+									break;
+								} else if (packageName.startsWith(name) && packageName.substring(0, name.length() + 1).endsWith(".")) {
+									String tempPath = packages[j].getResource().getLocation().toOSString();
+									if (tempPath.length() > desiredPath.length()) {
+										desiredPath = tempPath;
+										partialPathAddition = packageName.substring(name.length()).replaceAll("\\.", "/");
+									}
+								}
+							}
+						}
+					}
+				}
+
+				if (!pathFound && !partialPathAddition.isEmpty()) {
+					desiredPath = desiredPath + partialPathAddition;
+				} else if (!pathFound) {
+					packageName = packageName.replaceAll("\\.", "/");
+					desiredPath = pathRoot + "/" + packageName;
+				}
+			} else {
+				desiredPath = pathRoot;
+			}
+
+			String fileName = "Untitled";
+			if (!root.types().isEmpty()) {
+				fileName = ((TypeDeclaration) root.types().get(0)).getName().toString();
+			} else {
+				int counter = 1;
+				File testExists = new File(desiredPath + "/" + fileName + ".java");
+				while (testExists.exists()) {
+					fileName = "Untitled" + Integer.toString(counter);
+					testExists = new File(desiredPath + "/" + fileName + ".java");
+					counter++;
+				}
+			}
+			return desiredPath + "/" + fileName + ".java";
+		} else {
+			return null;
+		}
+	}
+
 }
 
 final class StringRangeFinder extends ASTVisitor {