Don't remove existing uses if they are the same as the created string…

… for use statements

- apache#5681
- Avoid changing the file state if the created string is the same as the
  existing use statements

php/php.editor/src/org/netbeans/modules/php/editor/actions/FixUsesPerformer.java

@@ -114,7 +114,6 @@ public void perform() {
         if (document instanceof BaseDocument) {
             baseDocument = (BaseDocument) document;
             editList = new EditList(baseDocument);
-            processExistingUses();
             processSelections();
             editList.apply();
         }
@@ -157,10 +156,23 @@ private void processSelections() {
         }
         replaceUnimportedItems();
         String insertString = createInsertString(useParts);
+        insertUses(startOffset, insertString);
+    }
+
+    private void insertUses(int startOffset, String insertString) {
+        ExistingUseStatementVisitor visitor = new ExistingUseStatementVisitor();
+        Program program = parserResult.getProgram();
+        if (program != null) {
+            program.accept(visitor);
+        }
+        List<OffsetRange> usedRanges = visitor.getUsedRanges();
+        String existingUses = getExistingUses(usedRanges);
         // avoid being recognized as a modified file
-        if (insertString.isEmpty()) {
+        if (insertString.isEmpty()
+                || existingUses.equals(insertString.trim())) {
             StatusDisplayer.getDefault().setStatusText(Bundle.FixUsesPerformer_noChanges());
         } else {
+            processExistingUses(usedRanges);
             editList.replace(startOffset, 0, insertString, false, 0);
         }
     }
@@ -493,13 +505,22 @@ private String createStringForCommonUse(List<UsePart> useParts) {
         return result.toString();
     }
 
-    private void processExistingUses() {
-        ExistingUseStatementVisitor visitor = new ExistingUseStatementVisitor();
-        Program program = parserResult.getProgram();
-        if (program != null) {
-            program.accept(visitor);
+    private String getExistingUses(List<OffsetRange> usedRanges) {
+        String existingUses = ""; // NOI18N
+        if (!usedRanges.isEmpty()) {
+            int start = usedRanges.get(0).getStart();
+            int end = usedRanges.get(usedRanges.size() - 1).getEnd();
+            try {
+                existingUses = baseDocument.getText(start, end - start);
+            } catch (BadLocationException ex) {
+                LOGGER.log(Level.WARNING, "Invalid offset: {0}", ex.offsetRequested()); // NOI18N
+            }
         }
-        for (OffsetRange offsetRange : visitor.getUsedRanges()) {
+        return existingUses;
+    }
+
+    private void processExistingUses(List<OffsetRange> usedRanges) {
+        for (OffsetRange offsetRange : usedRanges) {
             int startOffset = getOffsetWithoutLeadingWhitespaces(offsetRange.getStart());
             editList.replace(startOffset, offsetRange.getEnd() - startOffset, EMPTY_STRING, false, 0);
         }

php/php.editor/test/unit/data/testfiles/actions/testIssue210093/01/testIssue210093_01.php.fixUses

@@ -8,11 +8,11 @@ namespace Issue\Martin {
 
 namespace {
 
-use \Issue\Martin\Pondeli;
+    use \Issue\Martin\Pondeli;
 
     function testOk(Pondeli $param) {}
 
     function testFail(Pondeli $param) {}
 
 }
-?>
+?>

php/php.editor/test/unit/data/testfiles/actions/testNoChanges/01/testNoChanges_01.php

@@ -0,0 +1,37 @@
+<?php
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+namespace {
+
+    use NS1\TestClass;
+
+    class Test {
+        public function create(): TestClass {
+            return new TestClass();
+        }
+
+        public function something(\NS1\TestClass $testClass): TestClass {
+            return $testClass;
+        }
+    }
+}
+
+namespace NS1 {
+    class TestClass {}
+}

php/php.editor/test/unit/data/testfiles/actions/testNoChanges/01/testNoChanges_01.php.fixUses

@@ -0,0 +1,37 @@
+<?php
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+namespace {
+
+    use NS1\TestClass;
+
+    class Test {
+        public function create(): TestClass {
+            return new TestClass();
+        }
+
+        public function something(TestClass $testClass): TestClass {
+            return $testClass;
+        }
+    }
+}
+
+namespace NS1 {
+    class TestClass {}
+}

php/php.editor/test/unit/src/org/netbeans/modules/php/editor/actions/FixUsesPerformerTest.java

@@ -641,6 +641,13 @@ public void testGH5578_declare05() throws Exception {
         performTest("class DeclareTest1 ^{", selections, true, options);
     }
 
+    public void testNoChanges_01() throws Exception {
+        List<Selection> selections = new ArrayList<>();
+        selections.add(new Selection("\\NS1\\TestClass", ItemVariant.Type.CLASS));
+        Options options = new Options.Builder(PhpVersion.PHP_81).build();
+        performTest("    class ^Test {", selections, true, options);
+    }
+
     private String getTestResult(final String fileName, final String caretLine, final List<Selection> selections, final boolean removeUnusedUses, final Options options) throws Exception {
         FileObject testFile = getTestFile(fileName);