2 * Copyright (c) 2017 Pantheon Technologies, s.r.o. 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.rfc7950.stmt.fraction_digits;
10 import static com.google.common.base.Verify.verifyNotNull;
12 import com.google.common.collect.ImmutableList;
13 import com.google.common.collect.ImmutableMap;
14 import com.google.common.collect.ImmutableMap.Builder;
15 import org.eclipse.jdt.annotation.NonNull;
16 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
17 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
18 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
19 import org.opendaylight.yangtools.yang.model.api.stmt.FractionDigitsEffectiveStatement;
20 import org.opendaylight.yangtools.yang.model.api.stmt.FractionDigitsStatement;
21 import org.opendaylight.yangtools.yang.model.spi.stmt.DeclaredStatements;
22 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
23 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
25 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
26 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
28 public final class FractionDigitsStatementSupport
29 extends AbstractStatementSupport<Integer, FractionDigitsStatement, FractionDigitsEffectiveStatement> {
30 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
31 SubstatementValidator.builder(YangStmtMapping.FRACTION_DIGITS).build();
32 private static final FractionDigitsStatementSupport INSTANCE = new FractionDigitsStatementSupport();
34 private static final ImmutableMap<Integer, FractionDigitsStatement> EMPTY_DECLS;
35 private static final ImmutableMap<FractionDigitsStatement, EmptyFractionDigitsEffectiveStatement> EMPTY_EFF;
38 final Builder<Integer, FractionDigitsStatement> declBuilder = ImmutableMap.builder();
39 final Builder<FractionDigitsStatement, EmptyFractionDigitsEffectiveStatement> effBuilder =
40 ImmutableMap.builder();
42 for (int i = 1; i <= 18; ++i) {
43 final Integer argument = i;
44 final FractionDigitsStatement decl = DeclaredStatements.createFractionDigits(argument);
45 declBuilder.put(argument, decl);
46 effBuilder.put(decl, new EmptyFractionDigitsEffectiveStatement(decl));
49 EMPTY_DECLS = declBuilder.build();
50 EMPTY_EFF = effBuilder.build();
53 private FractionDigitsStatementSupport() {
54 super(YangStmtMapping.FRACTION_DIGITS, StatementPolicy.contextIndependent());
57 public static FractionDigitsStatementSupport getInstance() {
62 public Integer parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
63 final int fractionDigits;
65 fractionDigits = Integer.parseInt(value);
66 } catch (NumberFormatException e) {
67 throw new SourceException(ctx, e, "%s is not valid fraction-digits integer argument", value);
69 if (fractionDigits < 1 || fractionDigits > 18) {
70 throw new SourceException("fraction-digits argument should be integer within [1..18]", ctx);
72 return fractionDigits;
76 protected SubstatementValidator getSubstatementValidator() {
77 return SUBSTATEMENT_VALIDATOR;
81 protected FractionDigitsStatement createDeclared(final StmtContext<Integer, FractionDigitsStatement, ?> ctx,
82 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
83 return DeclaredStatements.createFractionDigits(ctx.getArgument(), substatements);
87 protected FractionDigitsStatement createEmptyDeclared(final StmtContext<Integer, FractionDigitsStatement, ?> ctx) {
88 final Integer argument = ctx.getArgument();
89 return verifyNotNull(EMPTY_DECLS.get(argument), "No declared instance for %s", argument);
93 protected FractionDigitsEffectiveStatement createEffective(final Current<Integer, FractionDigitsStatement> stmt,
94 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
95 return substatements.isEmpty() ? createEmptyEffective(stmt.declared())
96 : new RegularFractionDigitsEffectiveStatement(stmt.declared(), substatements);
99 private static @NonNull FractionDigitsEffectiveStatement createEmptyEffective(
100 final FractionDigitsStatement declared) {
101 final EmptyFractionDigitsEffectiveStatement shared = EMPTY_EFF.get(declared);
102 return shared != null ? shared : new EmptyFractionDigitsEffectiveStatement(declared);