CodeInsightUtil#findExpressionInRange: tolerate single error element at the end of selection

Fixes IDEA-51483 Extract Variable: does nothing on a block with invalid parentheses

GitOrigin-RevId: 4d69e9ec9521b1c962024512deef8fd0f71fe85e

java/java-impl/src/com/intellij/codeInsight/CodeInsightUtil.java

@@ -42,7 +42,7 @@ public class CodeInsightUtil {
       if (element2 instanceof PsiJavaToken) {
         final PsiJavaToken token = (PsiJavaToken)element2;
         final IElementType tokenType = token.getTokenType();
-        if (tokenType.equals(JavaTokenType.SEMICOLON)) {
+        if (tokenType.equals(JavaTokenType.SEMICOLON) || element2.getParent() instanceof PsiErrorElement) {
           expression = findElementInRange(file, startOffset, element2.getTextRange().getStartOffset(), PsiExpression.class);
         }
       }

java/java-tests/testData/refactoring/introduceVariable/SkipErroneousParen.after.java

@@ -0,0 +1,5 @@
+class Test {
+  void foo(String s) {
+      String x = s.trim();)
+  }
+}

java/java-tests/testData/refactoring/introduceVariable/SkipErroneousParen.java

@@ -0,0 +1,5 @@
+class Test {
+  void foo(String s) {
+    <selection>s.trim())</selection>
+  }
+}

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

@@ -190,6 +190,10 @@ public class IntroduceVariableTest extends LightJavaCodeInsightTestCase {
     doTest(new MockIntroduceVariableHandler("mi5", false, false, false, "int"));
   }
 
+  public void testSkipErroneousParen() {
+    doTest(new MockIntroduceVariableHandler("x", false, false, false, CommonClassNames.JAVA_LANG_STRING));
+  }
+
   public void testInsideIf() {
     doTest(new MockIntroduceVariableHandler("s1", false, false, false, CommonClassNames.JAVA_LANG_STRING));
   }