merge some code from idea, and add EnhancedSwitchMigrationInspection

Author: VISTALL

java-analysis-api/src/main/java/com/intellij/java/analysis/codeInspection/AbstractBaseJavaLocalInspectionTool.java

@@ -15,11 +15,13 @@
  */
 package com.intellij.java.analysis.codeInspection;
 
+import com.intellij.java.language.JavaFeature;
 import com.intellij.java.language.JavaLanguage;
 import com.intellij.java.language.psi.JavaElementVisitor;
 import com.intellij.java.language.psi.PsiClass;
 import com.intellij.java.language.psi.PsiField;
 import com.intellij.java.language.psi.PsiMethod;
+import com.intellij.java.language.psi.util.PsiUtil;
 import consulo.java.deadCodeNotWorking.OldStyleInspection;
 import consulo.language.Language;
 import consulo.language.editor.inspection.*;
@@ -31,12 +33,32 @@
 import consulo.language.psi.PsiFile;
 import consulo.language.psi.PsiNamedElement;
 import consulo.language.psi.util.PsiTreeUtil;
-
 import consulo.localize.LocalizeValue;
 import jakarta.annotation.Nonnull;
 import jakarta.annotation.Nullable;
 
+import java.util.Set;
+
 public abstract class AbstractBaseJavaLocalInspectionTool<State> extends LocalInspectionTool implements OldStyleInspection {
+    /**
+     * @return set of the features required for a given inspection. The inspection will not be launched on the files where
+     * the corresponding features are not available.
+     */
+    @Nonnull
+    public Set<JavaFeature> requiredFeatures() {
+        return Set.of();
+    }
+
+    @Override
+    public boolean isAvailableForFile(@Nonnull PsiFile file) {
+        for (JavaFeature feature : requiredFeatures()) {
+            if (!PsiUtil.isAvailable(feature, file)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     /**
      * Override this to report problems at method level.
      *

…/siyeh/ig/psiutils/ParenthesesUtils.java …sis/codeInspection/ParenthesesUtils.javajava-analysis-impl/src/main/java/com/siyeh/ig/psiutils/ParenthesesUtils.java renamed to java-analysis-api/src/main/java/com/intellij/java/analysis/codeInspection/ParenthesesUtils.java java-analysis-impl/src/main/java/com/siyeh/ig/psiutils/ParenthesesUtils.java renamed to java-analysis-api/src/main/java/com/intellij/java/analysis/codeInspection/ParenthesesUtils.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.siyeh.ig.psiutils;
+package com.intellij.java.analysis.codeInspection;
 
 import com.intellij.java.language.psi.*;
 import consulo.language.ast.IElementType;

java-analysis-impl/src/main/java/com/intellij/java/analysis/impl/codeInspection/ControlFlowUtils.java

@@ -0,0 +1,41 @@
+package com.intellij.java.analysis.impl.codeInspection;
+
+import consulo.configurable.ConfigurableBuilder;
+import consulo.configurable.UnnamedConfigurable;
+import consulo.java.analysis.impl.localize.JavaInspectionsLocalize;
+import consulo.language.editor.inspection.InspectionToolState;
+import consulo.util.xml.serializer.XmlSerializerUtil;
+import jakarta.annotation.Nullable;
+
+/**
+ * @author VISTALL
+ * @since 2025-10-16
+ */
+public class EnhancedSwitchMigrationInspectionState implements InspectionToolState<EnhancedSwitchMigrationInspectionState> {
+    public boolean myWarnOnlyOnExpressionConversion = true;
+    public int myMaxNumberStatementsForBranch = 2;
+
+    @Nullable
+    @Override
+    public EnhancedSwitchMigrationInspectionState getState() {
+        return this;
+    }
+
+    @Nullable
+    @Override
+    public UnnamedConfigurable createConfigurable() {
+        return ConfigurableBuilder.newBuilder()
+            .checkBox(
+                JavaInspectionsLocalize.inspectionSwitchExpressionMigrationWarnOnlyOnExpression(),
+                () -> myWarnOnlyOnExpressionConversion,
+                b -> myWarnOnlyOnExpressionConversion =  b
+            )
+            // TODO support JavaInspectionsLocalize.inspectionSwitchExpressionMigrationExpressionMaxStatements()
+            .buildUnnamed();
+    }
+
+    @Override
+    public void loadState(EnhancedSwitchMigrationInspectionState state) {
+        XmlSerializerUtil.copyBean(state, this);
+    }
+}

java-analysis-impl/src/main/java/com/intellij/java/analysis/impl/codeInspection/EnhancedSwitchMigrationInspection.java

@@ -13,8 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.siyeh.ig.psiutils;
+package com.intellij.java.analysis.impl.codeInspection;
 
+import com.intellij.java.analysis.codeInspection.ParenthesesUtils;
 import com.intellij.java.language.psi.*;
 import consulo.language.ast.IElementType;
 import consulo.language.psi.PsiElement;

java-analysis-impl/src/main/java/com/intellij/java/analysis/impl/codeInspection/EnhancedSwitchMigrationInspectionState.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.siyeh.ig.psiutils;
+package com.intellij.java.analysis.impl.codeInspection;
 
 import com.intellij.java.analysis.impl.codeInspection.dataFlow.ContractValue;
 import com.intellij.java.analysis.impl.codeInspection.dataFlow.JavaMethodContractUtil;