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[yangtools.git] / data / yang-data-impl / src / main / java / org / opendaylight / yangtools / yang / data / impl / codec / StringStringCodec.java

diff --git a/data/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/codec/StringStringCodec.java b/data/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/codec/StringStringCodec.java
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+/*
+ * 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.data.impl.codec;
+
+import static java.util.Objects.requireNonNull;
+
+import com.google.common.annotations.Beta;
+import com.google.common.collect.RangeSet;
+import org.opendaylight.yangtools.yang.common.RpcError.ErrorType;
+import org.opendaylight.yangtools.yang.data.api.codec.StringCodec;
+import org.opendaylight.yangtools.yang.data.api.codec.YangInvalidValueException;
+import org.opendaylight.yangtools.yang.model.api.type.LengthConstraint;
+import org.opendaylight.yangtools.yang.model.api.type.StringTypeDefinition;
+
+/**
+ * Do not use this class outside of yangtools, its presence does not fall into the API stability contract.
+ */
+@Beta
+public class StringStringCodec extends TypeDefinitionAwareCodec<String, StringTypeDefinition>
+        implements StringCodec<String> {
+    private final LengthConstraint lengthConstraint;
+
+    StringStringCodec(final StringTypeDefinition typeDef) {
+        super(requireNonNull(typeDef), String.class);
+        lengthConstraint = typeDef.getLengthConstraint().orElse(null);
+    }
+
+    public static StringStringCodec from(final StringTypeDefinition normalizedType) {
+        return normalizedType.getPatternConstraints().isEmpty() ? new StringStringCodec(normalizedType)
+                : new StringPatternCheckingCodec(normalizedType);
+    }
+
+    @Override
+    protected final String deserializeImpl(final String stringRepresentation) {
+        validate(stringRepresentation);
+        return stringRepresentation;
+    }
+
+    @Override
+    protected final String serializeImpl(final String data) {
+        return data;
+    }
+
+    void validate(final String str) {
+        if (lengthConstraint != null) {
+            final RangeSet<Integer> ranges = lengthConstraint.getAllowedRanges();
+            if (!ranges.contains(str.codePointCount(0, str.length()))) {
+                throw new YangInvalidValueException(ErrorType.PROTOCOL, lengthConstraint,
+                    "String " + str + " does not match allowed lengths " + ranges);
+            }
+        }
+    }
+}