YANGTOOLS-706: Split out yang-parser-rfc7950

[yangtools.git] / yang / yang-parser-rfc7950 / src / main / java / org / opendaylight / yangtools / yang / parser / rfc7950 / namespace / ChildSchemaNodeNamespace.java

diff --git a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/namespace/ChildSchemaNodeNamespace.java b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/namespace/ChildSchemaNodeNamespace.java
new file mode 100644 (file)
index 0000000..7685e93
--- /dev/null
+++ b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/namespace/ChildSchemaNodeNamespace.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.yangtools.yang.parser.rfc7950.namespace;
+
+import com.google.common.annotations.Beta;
+import java.util.Map;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
+import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
+import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour;
+import org.opendaylight.yangtools.yang.parser.spi.meta.StatementNamespace;
+import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
+import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
+
+/**
+ * Statement local namespace, which holds direct schema node descendants.
+ */
+@Beta
+public final class ChildSchemaNodeNamespace<D extends DeclaredStatement<QName>, E extends EffectiveStatement<QName, D>>
+    extends NamespaceBehaviour<QName, StmtContext<?, D, E>, ChildSchemaNodeNamespace<D, E>>
+    implements StatementNamespace<QName, D, E> {
+
+    public ChildSchemaNodeNamespace() {
+        super((Class) ChildSchemaNodeNamespace.class);
+    }
+
+    @Override
+    public StmtContext<?, D, E> get(@Nonnull final QName key) {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public StmtContext<?, D, E> getFrom(final NamespaceStorageNode storage, final QName key) {
+        return globalOrStatementSpecific(storage).getFromLocalStorage(getIdentifier(), key);
+    }
+
+    @Override
+    public Map<QName, StmtContext<?, D, E>> getAllFrom(final NamespaceStorageNode storage) {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public void addTo(final NamespaceStorageNode storage, final QName key, final StmtContext<?, D, E> value) {
+        final StmtContext<?, D, E> prev = globalOrStatementSpecific(storage).putToLocalStorageIfAbsent(
+            ChildSchemaNodeNamespace.class, key, value);
+
+        if (prev != null) {
+            throw new SourceException(value.getStatementSourceReference(),
+                "Error in module '%s': cannot add '%s'. Node name collision: '%s' already declared at %s",
+                value.getRoot().getStatementArgument(), key, prev.getStatementArgument(),
+                prev.getStatementSourceReference());
+        }
+    }
+
+    private static NamespaceStorageNode globalOrStatementSpecific(final NamespaceStorageNode storage) {
+        NamespaceStorageNode current = storage;
+        while (!isLocalOrGlobal(current.getStorageNodeType())) {
+            current = current.getParentNamespaceStorage();
+        }
+        return current;
+    }
+
+    private static boolean isLocalOrGlobal(final StorageNodeType type) {
+        return type == StorageNodeType.STATEMENT_LOCAL || type == StorageNodeType.GLOBAL;
+    }
+}