X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=yang%2Fyang-parser-impl%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fyangtools%2Fyang%2Fparser%2Fstmt%2Frfc6020%2Feffective%2FExtensionEffectiveStatementImpl.java;h=94e8e546833524b384071fd004a54abccdd4d72a;hb=07a461a735316f15f9a78455e1c1c3caf91b2a3e;hp=f9f1d8066557af3a21c814b67d07819e0b93f688;hpb=40cc734f65f305ecb2d5d7e01b694e5e54f716e1;p=yangtools.git

diff --git a/yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/effective/ExtensionEffectiveStatementImpl.java b/yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/effective/ExtensionEffectiveStatementImpl.java
index f9f1d80665..94e8e54683 100644
--- a/yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/effective/ExtensionEffectiveStatementImpl.java
+++ b/yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/effective/ExtensionEffectiveStatementImpl.java
@@ -7,72 +7,93 @@
  */
 package org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective;
 
-import java.util.Collection;
-import java.util.LinkedList;
-import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.Utils;
-import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
-import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionStatement;
-import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
 import com.google.common.collect.ImmutableList;
+import java.util.ArrayDeque;
+import java.util.ArrayList;
+import java.util.Deque;
 import java.util.List;
+import java.util.Objects;
 import org.opendaylight.yangtools.yang.common.QName;
 import org.opendaylight.yangtools.yang.model.api.ExtensionDefinition;
 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
 import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
+import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionStatement;
+import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
+
+public class ExtensionEffectiveStatementImpl extends AbstractEffectiveDocumentedNode<QName, ExtensionStatement>
+        implements ExtensionDefinition {
+    private static final class RecursionDetector extends ThreadLocal<Deque<ExtensionEffectiveStatementImpl>> {
+        boolean check(final ExtensionEffectiveStatementImpl current) {
+            final Deque<ExtensionEffectiveStatementImpl> stack = get();
+            if (stack != null) {
+                for (ExtensionEffectiveStatementImpl s : stack) {
+                    if (s == current) {
+                        return true;
+                    }
+                }
+            }
+            return false;
+        }
+
+        void push(final ExtensionEffectiveStatementImpl current) {
+            Deque<ExtensionEffectiveStatementImpl> stack = get();
+            if (stack == null) {
+                stack = new ArrayDeque<>(1);
+                set(stack);
+            }
+
+            stack.push(current);
+        }
+
+        void pop() {
+            Deque<ExtensionEffectiveStatementImpl> stack = get();
+            stack.pop();
+            if (stack.isEmpty()) {
+                remove();
+            }
+        }
+    }
+
+    private static final RecursionDetector TOSTRING_DETECTOR = new RecursionDetector();
 
-public class ExtensionEffectiveStatementImpl extends
-        AbstractEffectiveDocumentedNode<QName, ExtensionStatement> implements
-        ExtensionDefinition {
     private final QName qname;
-    String argument;
+    private final String argument;
     private final SchemaPath schemaPath;
 
-    ImmutableList<UnknownSchemaNode> unknownNodes;
-    boolean yin;
+    private final List<UnknownSchemaNode> unknownNodes;
+    private final boolean yin;
 
     public ExtensionEffectiveStatementImpl(
-            StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
+            final StmtContext<QName, ExtensionStatement, EffectiveStatement<QName, ExtensionStatement>> ctx) {
         super(ctx);
-
         this.qname = ctx.getStatementArgument();
-        this.schemaPath = Utils.getSchemaPath(ctx);
-
-        initSubstatementCollections();
-        initFields();
-
-    }
+        this.schemaPath = ctx.getSchemaPath().get();
 
-    private void initFields() {
+        final List<UnknownSchemaNode> unknownNodesInit = new ArrayList<>();
+        for (EffectiveStatement<?, ?> unknownNode : effectiveSubstatements()) {
+            if (unknownNode instanceof UnknownSchemaNode) {
+                unknownNodesInit.add((UnknownSchemaNode) unknownNode);
+            }
+        }
+        this.unknownNodes = ImmutableList.copyOf(unknownNodesInit);
 
+        // initFields
         ArgumentEffectiveStatementImpl argumentSubstatement = firstEffective(ArgumentEffectiveStatementImpl.class);
-
         if (argumentSubstatement != null) {
             this.argument = argumentSubstatement.argument().getLocalName();
-        }
-
-        YinElementEffectiveStatementImpl yinElement = firstEffective(YinElementEffectiveStatementImpl.class);
 
-        if (yinElement != null) {
-            this.yin = yinElement.argument();
+            YinElementEffectiveStatementImpl yinElement = argumentSubstatement
+                    .firstEffective(YinElementEffectiveStatementImpl.class);
+            if (yinElement != null) {
+                this.yin = yinElement.argument();
+            } else {
+                this.yin = false;
+            }
         } else {
+            this.argument = null;
             this.yin = false;
         }
-
-    }
-
-    private void initSubstatementCollections() {
-        Collection<? extends EffectiveStatement<?, ?>> effectiveSubstatements = effectiveSubstatements();
-
-        List<UnknownSchemaNode> unknownNodesInit = new LinkedList<>();
-
-        for (EffectiveStatement<?, ?> effectiveStatement : effectiveSubstatements) {
-            if (effectiveStatement instanceof UnknownSchemaNode) {
-                UnknownSchemaNode unknownNode = (UnknownSchemaNode) effectiveStatement;
-                unknownNodesInit.add(unknownNode);
-            }
-        }
-
-        this.unknownNodes = ImmutableList.copyOf(unknownNodesInit);
     }
 
     @Override
@@ -104,9 +125,8 @@ public class ExtensionEffectiveStatementImpl extends
     public int hashCode() {
         final int prime = 31;
         int result = 1;
-        result = prime * result + ((qname == null) ? 0 : qname.hashCode());
-        result = prime * result
-                + ((schemaPath == null) ? 0 : schemaPath.hashCode());
+        result = prime * result + Objects.hashCode(qname);
+        result = prime * result + Objects.hashCode(schemaPath);
         return result;
     }
 
@@ -122,34 +142,37 @@ public class ExtensionEffectiveStatementImpl extends
             return false;
         }
         ExtensionEffectiveStatementImpl other = (ExtensionEffectiveStatementImpl) obj;
-        if (qname == null) {
-            if (other.qname != null) {
-                return false;
-            }
-        } else if (!qname.equals(other.qname)) {
-            return false;
-        }
-        if (schemaPath == null) {
-            if (other.schemaPath != null) {
-                return false;
-            }
-        } else if (!schemaPath.equals(other.schemaPath)) {
-            return false;
-        }
-        return true;
+        return Objects.equals(qname, other.qname) && Objects.equals(schemaPath, other.schemaPath);
     }
 
     @Override
     public String toString() {
-        StringBuilder sb = new StringBuilder(
-                ExtensionEffectiveStatementImpl.class.getSimpleName());
-        sb.append("[");
-        sb.append("argument=").append(argument);
-        sb.append(", qname=").append(qname);
-        sb.append(", schemaPath=").append(schemaPath);
-        sb.append(", extensionSchemaNodes=").append(unknownNodes);
-        sb.append(", yin=").append(yin);
-        sb.append("]");
-        return sb.toString();
+        if (TOSTRING_DETECTOR.check(this)) {
+            return recursedToString();
+        }
+
+        TOSTRING_DETECTOR.push(this);
+        try {
+            StringBuilder sb = new StringBuilder(ExtensionEffectiveStatementImpl.class.getSimpleName());
+            sb.append("[");
+            sb.append("argument=").append(argument);
+            sb.append(", qname=").append(qname);
+            sb.append(", schemaPath=").append(schemaPath);
+            sb.append(", extensionSchemaNodes=").append(unknownNodes);
+            sb.append(", yin=").append(yin);
+            sb.append("]");
+            return sb.toString();
+        } finally {
+            TOSTRING_DETECTOR.pop();
+        }
+    }
+
+    private String recursedToString() {
+        return ExtensionEffectiveStatementImpl.class.getSimpleName() + "[" +
+                "argument=" + argument +
+                ", qname=" + qname +
+                ", schemaPath=" + schemaPath +
+                ", yin=" + yin +
+                " <RECURSIVE> ]";
     }
-}
\ No newline at end of file
+}