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.parser.spi.source;
10 import java.util.Objects;
11 import org.eclipse.jdt.annotation.NonNull;
12 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
15 * Reference of statement source present in textual source format. Utility implementation
16 * of {@link StatementSourceReference} for textual sources, this is preferred {@link StatementSourceReference}
17 * for implementations of YANG / YIN statement stream sources.
20 * To create source reference use one of this static factories:
22 * <li>{@link #atPosition(String, int, int)} - provides most specific reference of statement location, this is most
23 * preferred since it provides most context to debug YANG model.</li>
24 * <li>{@link #atLine(String, int)}- provides source and line of statement location.</li>
25 * <li>{@link #inSource(String)} - least specific reference, should be used only if any of previous references are
26 * unable to create / derive from source.</li>
29 public abstract class DeclarationInTextSource implements StatementSourceReference {
30 private static class InSource extends DeclarationInTextSource {
31 InSource(final String sourceName) {
36 private static class AtLine extends InSource {
37 private final int line;
39 AtLine(final String sourceName, final int line) {
46 return super.hashCodeImpl() * 31 + line;
50 boolean equalsImpl(final DeclarationInTextSource obj) {
51 return line == ((AtLine) obj).line && super.equalsImpl(obj);
55 public String toString() {
56 return super.toString() + ':' + line;
60 private static final class AtPosition extends AtLine {
61 private final int character;
63 AtPosition(final String sourceName, final int line, final int character) {
64 super(sourceName, line);
65 this.character = character;
70 return super.hashCodeImpl() * 31 + character;
74 boolean equalsImpl(final DeclarationInTextSource obj) {
75 return character == ((AtPosition) obj).character && super.equalsImpl(obj);
79 public String toString() {
80 return super.toString() + ':' + character;
84 private final String sourceName;
86 DeclarationInTextSource(final String sourceName) {
87 this.sourceName = sourceName;
90 public static @NonNull DeclarationInTextSource inSource(final String sourceName) {
91 return new InSource(sourceName);
94 public static @NonNull DeclarationInTextSource atLine(final String sourceName, final int line) {
95 return new AtLine(sourceName, line);
98 public static @NonNull DeclarationInTextSource atPosition(final String sourceName, final int line,
100 return new AtPosition(sourceName, line, position);
103 public final String getSourceName() {
108 public final StatementSource getStatementSource() {
109 return StatementSource.DECLARATION;
113 public final int hashCode() {
114 return hashCodeImpl();
118 public final boolean equals(final Object obj) {
120 || obj != null && getClass().equals(obj.getClass()) && equalsImpl((DeclarationInTextSource) obj);
124 public String toString() {
125 return sourceName == null ? "null" : sourceName;
129 return Objects.hashCode(sourceName);
132 boolean equalsImpl(final DeclarationInTextSource obj) {
133 return Objects.equals(sourceName, obj.sourceName);