occupy less memory in jam patterns

java/java-psi-api/src/com/intellij/patterns/PsiAnnotationPattern.java

@@ -16,15 +16,21 @@
 package com.intellij.patterns;
 
 import com.intellij.psi.PsiAnnotation;
+import com.intellij.psi.PsiArrayInitializerMemberValue;
+import com.intellij.psi.PsiElement;
 import com.intellij.util.ProcessingContext;
 import org.jetbrains.annotations.NonNls;
 import org.jetbrains.annotations.NotNull;
 
+import static com.intellij.patterns.PsiJavaPatterns.psiNameValuePair;
+
 /**
  * @author peter
  */
 public class PsiAnnotationPattern extends PsiElementPattern<PsiAnnotation, PsiAnnotationPattern> {
-  protected PsiAnnotationPattern() {
+  static final PsiAnnotationPattern PSI_ANNOTATION_PATTERN = new PsiAnnotationPattern();
+
+  private PsiAnnotationPattern() {
     super(PsiAnnotation.class);
   }
 
@@ -38,4 +44,17 @@ public class PsiAnnotationPattern extends PsiElementPattern<PsiAnnotation, PsiAn
   public PsiAnnotationPattern qName(@NonNls String qname) {
     return qName(StandardPatterns.string().equalTo(qname));
   }
+
+  public PsiAnnotationPattern insideAnnotationAttribute(@NotNull final String attributeName, @NotNull final ElementPattern<PsiAnnotation> parentAnnoPattern) {
+    return with(new PatternCondition<PsiAnnotation>("insideAnnotationAttribute") {
+      final PsiNameValuePairPattern attrPattern = psiNameValuePair().withName(attributeName).withSuperParent(2, parentAnnoPattern);
+
+      @Override
+      public boolean accepts(@NotNull PsiAnnotation annotation, ProcessingContext context) {
+        PsiElement attr = getParent(annotation);
+        if (attr instanceof PsiArrayInitializerMemberValue) attr = getParent(attr);
+        return attrPattern.accepts(attr);
+      }
+    });
+  }
 }

java/java-psi-api/src/com/intellij/patterns/PsiJavaPatterns.java

@@ -144,11 +144,11 @@ public class PsiJavaPatterns extends StandardPatterns{
   }
 
   public static PsiAnnotationPattern psiAnnotation() {
-    return new PsiAnnotationPattern();
+    return PsiAnnotationPattern.PSI_ANNOTATION_PATTERN;
   }
 
   public static PsiNameValuePairPattern psiNameValuePair() {
-    return new PsiNameValuePairPattern();
+    return PsiNameValuePairPattern.NAME_VALUE_PAIR_PATTERN;
   }
 
   public static PsiTypePattern psiType() {

java/java-psi-api/src/com/intellij/patterns/PsiNameValuePairPattern.java

@@ -25,7 +25,9 @@ import org.jetbrains.annotations.NotNull;
  * @author peter
  */
 public class PsiNameValuePairPattern extends PsiElementPattern<PsiNameValuePair, PsiNameValuePairPattern> {
-  protected PsiNameValuePairPattern() {
+  static final PsiNameValuePairPattern NAME_VALUE_PAIR_PATTERN = new PsiNameValuePairPattern();
+
+  private PsiNameValuePairPattern() {
     super(PsiNameValuePair.class);
   }