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 java.util.Collection;
11 import com.google.common.base.Function;
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(StmtContext<?, ?, ?> input) {
20 return input.buildDeclared();
24 private static final Function<StmtContext<?, ?,?>, EffectiveStatement<?,?>> BUILD_EFFECTIVE = new Function<StmtContext<?,?,?>, EffectiveStatement<?,?>>() {
26 public EffectiveStatement<?, ?> apply(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")
42 public static final <E extends EffectiveStatement<?, ?>> Function<StmtContext<?, ?, ? extends E>, E> buildEffective() {
43 return Function.class.cast(BUILD_EFFECTIVE);
46 @SuppressWarnings("unchecked")
47 public static final <AT, DT extends DeclaredStatement<AT>> AT firstAttributeOf(
48 Iterable<? extends StmtContext<?, ?, ?>> contexts,
49 Class<DT> declaredType) {
50 for (StmtContext<?, ?, ?> ctx : contexts) {
51 if (producesDeclared(ctx, declaredType)) {
52 return (AT) ctx.getStatementArgument();
58 @SuppressWarnings("unchecked")
59 public static final <AT, DT extends DeclaredStatement<AT>> AT firstAttributeOf(
60 StmtContext<?, ?, ?> ctx, Class<DT> declaredType) {
62 if (producesDeclared(ctx, declaredType)) {
63 return (AT) ctx.getStatementArgument();
69 public static final <DT extends DeclaredStatement<?>> StmtContext<?, ?, ?> findFirstDeclaredSubstatement(
70 StmtContext<?, ?, ?> stmtContext, Class<DT> declaredType) {
71 Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements = stmtContext
72 .declaredSubstatements();
73 for (StmtContext<?, ?, ?> subStmtContext : declaredSubstatements) {
74 if (producesDeclared(subStmtContext,declaredType)) {
75 return subStmtContext;
81 public static final StmtContext<?, ?, ?> findFirstDeclaredSubstatement(
82 StmtContext<?, ?, ?> stmtContext, int startIndex, Class<? extends DeclaredStatement<?>>... types) {
84 if (startIndex >= types.length) {
88 Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements = stmtContext
89 .declaredSubstatements();
90 for (StmtContext<?, ?, ?> subStmtContext : declaredSubstatements) {
91 if (producesDeclared(subStmtContext,types[startIndex])) {
92 if (startIndex + 1 == types.length) {
93 return subStmtContext;
95 return findFirstDeclaredSubstatement(subStmtContext,
103 public static final <DT extends DeclaredStatement<?>> StmtContext<?, ?, ?> findFirstDeclaredSubstatementOnSublevel(
104 StmtContext<?, ?, ?> stmtContext, Class<DT> declaredType,
106 Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements = stmtContext
107 .declaredSubstatements();
108 for (StmtContext<?, ?, ?> subStmtContext : declaredSubstatements) {
109 if (sublevel == 1 && producesDeclared(subStmtContext,declaredType)) {
110 return subStmtContext;
113 StmtContext<?, ?, ?> result = findFirstDeclaredSubstatementOnSublevel(
114 subStmtContext, declaredType, --sublevel);
115 if (result != null) {
124 public static final <DT extends DeclaredStatement<?>> StmtContext<?, ?, ?> findDeepFirstDeclaredSubstatement(
125 StmtContext<?, ?, ?> stmtContext, Class<DT> declaredType) {
127 Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements = stmtContext
128 .declaredSubstatements();
130 for (StmtContext<?, ?, ?> subStmtContext : declaredSubstatements) {
131 if (producesDeclared(subStmtContext,declaredType)) {
132 return subStmtContext;
134 StmtContext<?, ?, ?> result = findDeepFirstDeclaredSubstatement(
135 subStmtContext, declaredType);
136 if (result != null) {
145 public static final boolean producesDeclared(StmtContext<?, ?, ?> ctx,
146 Class<? extends DeclaredStatement<?>> type) {
147 return type.isAssignableFrom(ctx.getPublicDefinition()
148 .getDeclaredRepresentationClass());