[java] new module-info PSI

- a module may own a modifier list

java/java-psi-api/src/com/intellij/psi/PsiJavaModule.java

@@ -22,7 +22,7 @@ import org.jetbrains.annotations.NotNull;
  *
  * @since 2016.3
  */
-public interface PsiJavaModule extends NavigatablePsiElement, PsiNameIdentifierOwner, PsiJavaDocumentedElement {
+public interface PsiJavaModule extends NavigatablePsiElement, PsiNameIdentifierOwner, PsiModifierListOwner, PsiJavaDocumentedElement {
   String MODULE_INFO_CLASS = "module-info";
   String MODULE_INFO_FILE = MODULE_INFO_CLASS + ".java";
   String MODULE_INFO_CLS_FILE = MODULE_INFO_CLASS + ".class";

java/java-psi-impl/src/com/intellij/psi/impl/compiled/ClsJavaModuleImpl.java

@@ -19,11 +19,13 @@ import com.intellij.navigation.ItemPresentation;
 import com.intellij.navigation.ItemPresentationProviders;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.psi.*;
+import com.intellij.psi.impl.java.stubs.JavaStubElementTypes;
 import com.intellij.psi.impl.java.stubs.PsiJavaModuleStub;
 import com.intellij.psi.impl.source.SourceTreeToPsiMap;
 import com.intellij.psi.impl.source.tree.JavaElementType;
 import com.intellij.psi.impl.source.tree.TreeElement;
 import com.intellij.psi.javadoc.PsiDocComment;
+import com.intellij.psi.stubs.StubElement;
 import com.intellij.util.IncorrectOperationException;
 import com.intellij.util.containers.JBIterable;
 import org.jetbrains.annotations.NotNull;
@@ -95,6 +97,7 @@ public class ClsJavaModuleImpl extends ClsRepositoryPsiElement<PsiJavaModuleStub
 
     setMirrorCheckingType(element, JavaElementType.MODULE);
     setMirror(getNameIdentifier(), mirror.getNameIdentifier());
+    setMirror(getModifierList(), mirror.getModifierList());
 
     setMirrors(newArrayList(getStub().getChildrenByType(JavaElementType.REQUIRES_STATEMENT, PsiRequiresStatement.EMPTY_ARRAY)),
                newArrayList(mirror.getRequires()));
@@ -120,6 +123,18 @@ public class ClsJavaModuleImpl extends ClsRepositoryPsiElement<PsiJavaModuleStub
     throw cannotModifyException(this);
   }
 
+  @Override
+  public PsiModifierList getModifierList() {
+    StubElement<PsiModifierList> childStub = getStub().findChildStubByType(JavaStubElementTypes.MODIFIER_LIST);
+    return childStub != null ? childStub.getPsi() : null;
+  }
+
+  @Override
+  public boolean hasModifierProperty(@NotNull String name) {
+    PsiModifierList modifierList = getModifierList();
+    return modifierList != null && modifierList.hasModifierProperty(name);
+  }
+
   @Nullable
   @Override
   public PsiDocComment getDocComment() {

java/java-psi-impl/src/com/intellij/psi/impl/light/LightJavaModule.java

@@ -102,6 +102,16 @@ public class LightJavaModule extends LightElement implements PsiJavaModule {
     throw new IncorrectOperationException("Cannot modify automatic module '" + getName() + "'");
   }
 
+  @Override
+  public PsiModifierList getModifierList() {
+    return null;
+  }
+
+  @Override
+  public boolean hasModifierProperty(@NotNull String name) {
+    return false;
+  }
+
   @Override
   public ItemPresentation getPresentation() {
     return ItemPresentationProviders.getItemPresentation(this);

java/java-psi-impl/src/com/intellij/psi/impl/source/PsiJavaModuleImpl.java

@@ -128,6 +128,17 @@ public class PsiJavaModuleImpl extends JavaStubPsiElement<PsiJavaModuleStub> imp
     return this;
   }
 
+  @Override
+  public PsiModifierList getModifierList() {
+    return getStubOrPsiChild(JavaStubElementTypes.MODIFIER_LIST);
+  }
+
+  @Override
+  public boolean hasModifierProperty(@NotNull String name) {
+    PsiModifierList modifierList = getModifierList();
+    return modifierList != null && modifierList.hasModifierProperty(name);
+  }
+
   @Nullable
   @Override
   public PsiDocComment getDocComment() {