2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.data.impl.codec;
10 import com.google.common.base.Preconditions;
11 import com.google.common.base.Strings;
12 import java.util.regex.Pattern;
13 import org.opendaylight.yangtools.yang.model.api.type.ModifierKind;
14 import org.opendaylight.yangtools.yang.model.api.type.PatternConstraint;
16 class CompiledPatternContext {
18 private final Pattern pattern;
19 private final String errorMessage;
20 private final boolean match;
22 CompiledPatternContext(final PatternConstraint yangConstraint) {
23 pattern = Pattern.compile("^" + yangConstraint.getRegularExpression() + "$");
25 match = yangConstraint.getModifier() != ModifierKind.INVERT_MATCH;
26 final String yangMessage = yangConstraint.getErrorMessage();
27 if (Strings.isNullOrEmpty(yangMessage)) {
28 errorMessage = "Value %s " + (match ? "does not match" : "matches") + " regular expression <"
29 + pattern.pattern() + ">";
31 errorMessage = yangMessage;
35 public void validate(final String s) {
36 Preconditions.checkArgument(pattern.matcher(s).matches() == match, errorMessage, s);