IDEA-63358 (references search in incomplete code)

java/java-impl/src/com/intellij/psi/impl/search/VariableInIncompleteCodeSearcher.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2000-2011 JetBrains s.r.o.
+ *
+ * Licensed 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.
+ */
+package com.intellij.psi.impl.search;
+
+import com.intellij.openapi.application.QueryExecutorBase;
+import com.intellij.psi.*;
+import com.intellij.psi.search.LocalSearchScope;
+import com.intellij.psi.search.SearchScope;
+import com.intellij.psi.search.searches.ReferencesSearch;
+import com.intellij.psi.util.PsiElementFilter;
+import com.intellij.psi.util.PsiTreeUtil;
+import com.intellij.util.Processor;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Looks for references to local variable or method parameter in invalid (incomplete) code.
+ */
+public class VariableInIncompleteCodeSearcher extends QueryExecutorBase<PsiReference, ReferencesSearch.SearchParameters> {
+  public VariableInIncompleteCodeSearcher() {
+    super(true);
+  }
+
+  @Override
+  public void processQuery(@NotNull final ReferencesSearch.SearchParameters p, @NotNull final Processor<PsiReference> consumer) {
+    final PsiElement refElement = p.getElementToSearch();
+    if (!(refElement instanceof PsiLocalVariable || refElement instanceof PsiParameter)) return;
+
+    final SearchScope scope = refElement.getUseScope();
+    if (scope instanceof LocalSearchScope) {
+      final PsiElement[] scopeElements = ((LocalSearchScope)scope).getScope();
+      if (scopeElements.length == 1) {
+        final String name = ((PsiVariable)refElement).getName();
+        PsiTreeUtil.collectElements(scopeElements[0], new PsiElementFilter() {
+          @Override
+          public boolean isAccepted(final PsiElement element) {
+            if (element instanceof PsiJavaCodeReferenceElement) {
+              final PsiJavaCodeReferenceElement ref = (PsiJavaCodeReferenceElement)element;
+              if (name.equals(ref.getCanonicalText()) && ref.resolve() == null && ref.advancedResolve(true).getElement() == refElement) {
+                consumer.process(ref);
+              }
+            }
+            return false;
+          }
+        });
+      }
+    }
+  }
+}

java/java-tests/testData/refactoring/renameLocal/RenameLocalIncomplete.java

@@ -0,0 +1,7 @@
+public class RenameLocalIncomplete {
+  public void test() {
+    Integer <caret>integer = 0;
+    integer.
+    Double x = 3;
+  }
+}

java/java-tests/testData/refactoring/renameLocal/RenameLocalIncomplete_after.java

@@ -0,0 +1,7 @@
+public class RenameLocalIncomplete {
+  public void test() {
+    Integer _i = 0;
+    _i.
+    Double x = 3;
+  }
+}

java/java-tests/testData/refactoring/renameLocal/RenameParamIncomplete.java

@@ -0,0 +1,6 @@
+public class RenameLocalIncomplete {
+  public void test(Integer <caret>integer) {
+    integer.
+    Double x = 3;
+  }
+}

java/java-tests/testData/refactoring/renameLocal/RenameParamIncomplete_after.java

@@ -0,0 +1,6 @@
+public class RenameLocalIncomplete {
+  public void test(Integer _i) {
+    _i.
+    Double x = 3;
+  }
+}

java/java-tests/testSrc/com/intellij/refactoring/RenameLocalTest.java

@@ -42,6 +42,14 @@ public class RenameLocalTest extends LightCodeInsightTestCase {
     doTest("i");
   }
 
+  public void testRenameLocalIncomplete() throws Exception {
+    doTest("_i");
+  }
+
+  public void testRenameParamIncomplete() throws Exception {
+    doTest("_i");
+  }
+
   private void doTest(final String newName) throws Exception {
     configureByFile(BASE_PATH + getTestName(false) + ".java");
     PsiElement element = TargetElementUtilBase

resources/src/META-INF/IdeaPlugin.xml

@@ -207,6 +207,8 @@
 
     <referencesSearch implementation="com.intellij.psi.impl.search.SimpleAccessorReferenceSearcher"/>
 
+    <referencesSearch implementation="com.intellij.psi.impl.search.VariableInIncompleteCodeSearcher"/>
+
     <superMethodsSearch implementation="com.intellij.psi.impl.search.MethodSuperSearcher"/>
     <annotatedElementsSearch implementation="com.intellij.psi.impl.search.AnnotatedElementsSearcher"/>
     <annotatedPackagesSearch implementation="com.intellij.psi.impl.search.AnnotatedPackagesSearcher"/>