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.meta;
10 import com.google.common.base.Function;
11 import java.util.Collection;
12 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
13 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
15 public final class StmtContextUtils {
17 private static final Function<StmtContext<?, ?,?>, DeclaredStatement<?>> BUILD_DECLARED = new Function<StmtContext<?,?,?>, DeclaredStatement<?>>() {
19 public DeclaredStatement<?> apply(final StmtContext<?, ?, ?> input) {
20 return input.buildDeclared();
24 private static final Function<StmtContext<?, ?,?>, EffectiveStatement<?,?>> BUILD_EFFECTIVE = new Function<StmtContext<?,?,?>, EffectiveStatement<?,?>>() {
26 public EffectiveStatement<?, ?> apply(final StmtContext<?, ?, ?> input) {
27 return input.buildEffective();
31 private StmtContextUtils() {
32 throw new UnsupportedOperationException("Utility class");
35 @SuppressWarnings("unchecked")
36 public static <D extends DeclaredStatement<?>> Function<StmtContext<?, ? extends D, ?>, D> buildDeclared() {
37 return Function.class.cast(BUILD_DECLARED);
40 @SuppressWarnings("unchecked")
41 public static <E extends EffectiveStatement<?, ?>> Function<StmtContext<?, ?, ? extends E>, E> buildEffective() {
42 return Function.class.cast(BUILD_EFFECTIVE);
45 @SuppressWarnings("unchecked")
46 public static <AT, DT extends DeclaredStatement<AT>> AT firstAttributeOf(
47 final Iterable<? extends StmtContext<?, ?, ?>> contexts,
48 final Class<DT> declaredType) {
49 for (StmtContext<?, ?, ?> ctx : contexts) {
50 if (producesDeclared(ctx, declaredType)) {
51 return (AT) ctx.getStatementArgument();
57 @SuppressWarnings("unchecked")
58 public static <AT, DT extends DeclaredStatement<AT>> AT firstAttributeOf(
59 final StmtContext<?, ?, ?> ctx, final Class<DT> declaredType) {
61 if (producesDeclared(ctx, declaredType)) {
62 return (AT) ctx.getStatementArgument();
68 public static <DT extends DeclaredStatement<?>> StmtContext<?, ?, ?> findFirstDeclaredSubstatement(
69 final StmtContext<?, ?, ?> stmtContext, final Class<DT> declaredType) {
70 Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements = stmtContext
71 .declaredSubstatements();
72 for (StmtContext<?, ?, ?> subStmtContext : declaredSubstatements) {
73 if (producesDeclared(subStmtContext,declaredType)) {
74 return subStmtContext;
80 public static StmtContext<?, ?, ?> findFirstDeclaredSubstatement(
81 final StmtContext<?, ?, ?> stmtContext, int startIndex, final Class<? extends DeclaredStatement<?>>... types) {
83 if (startIndex >= types.length) {
87 Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements = stmtContext
88 .declaredSubstatements();
89 for (StmtContext<?, ?, ?> subStmtContext : declaredSubstatements) {
90 if (producesDeclared(subStmtContext,types[startIndex])) {
91 if (startIndex + 1 == types.length) {
92 return subStmtContext;
94 return findFirstDeclaredSubstatement(subStmtContext,
102 public static <DT extends DeclaredStatement<?>> StmtContext<?, ?, ?> findFirstDeclaredSubstatementOnSublevel(
103 final StmtContext<?, ?, ?> stmtContext, final Class<DT> declaredType,
105 Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements = stmtContext
106 .declaredSubstatements();
107 for (StmtContext<?, ?, ?> subStmtContext : declaredSubstatements) {
108 if (sublevel == 1 && producesDeclared(subStmtContext,declaredType)) {
109 return subStmtContext;
112 StmtContext<?, ?, ?> result = findFirstDeclaredSubstatementOnSublevel(
113 subStmtContext, declaredType, --sublevel);
114 if (result != null) {
123 public static <DT extends DeclaredStatement<?>> StmtContext<?, ?, ?> findDeepFirstDeclaredSubstatement(
124 final StmtContext<?, ?, ?> stmtContext, final Class<DT> declaredType) {
126 Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements = stmtContext
127 .declaredSubstatements();
129 for (StmtContext<?, ?, ?> subStmtContext : declaredSubstatements) {
130 if (producesDeclared(subStmtContext,declaredType)) {
131 return subStmtContext;
133 StmtContext<?, ?, ?> result = findDeepFirstDeclaredSubstatement(
134 subStmtContext, declaredType);
135 if (result != null) {
144 public static boolean producesDeclared(final StmtContext<?, ?, ?> ctx,
145 final Class<? extends DeclaredStatement<?>> type) {
146 return type.isAssignableFrom(ctx.getPublicDefinition()
147 .getDeclaredRepresentationClass());