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.stmt.rfc6020;
10 import com.google.common.base.Optional;
11 import com.google.common.base.Preconditions;
12 import com.google.common.base.Splitter;
13 import com.google.common.base.Strings;
14 import com.google.common.collect.ImmutableMap;
15 import com.google.common.collect.ImmutableSet;
16 import com.google.common.collect.Iterables;
17 import java.math.BigDecimal;
18 import java.math.BigInteger;
19 import java.util.ArrayList;
20 import java.util.HashSet;
21 import java.util.Iterator;
22 import java.util.List;
25 import org.opendaylight.yangtools.yang.common.QName;
26 import org.opendaylight.yangtools.yang.common.YangVersion;
27 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
28 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
29 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
30 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
31 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
32 import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition;
33 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
34 import org.opendaylight.yangtools.yang.model.api.type.LengthConstraint;
35 import org.opendaylight.yangtools.yang.model.api.type.RangeConstraint;
36 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
37 import org.opendaylight.yangtools.yang.model.util.UnresolvedNumber;
38 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
39 import org.opendaylight.yangtools.yang.parser.spi.meta.QNameCacheNamespace;
40 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
41 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
42 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.type.LengthConstraintEffectiveImpl;
43 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.type.RangeConstraintEffectiveImpl;
46 * Utility class for manipulating YANG base and extended types implementation.
48 public final class TypeUtils {
50 public static final String BINARY = "binary";
51 public static final String BITS = "bits";
52 public static final String BOOLEAN = "boolean";
53 public static final String DECIMAL64 = "decimal64";
54 public static final String EMPTY = "empty";
55 public static final String ENUMERATION = "enumeration";
56 public static final String IDENTITY_REF = "identityref";
57 public static final String INSTANCE_IDENTIFIER = "instance-identifier";
58 public static final String INT8 = "int8";
59 public static final String INT16 = "int16";
60 public static final String INT32 = "int32";
61 public static final String INT64 = "int64";
62 public static final String LEAF_REF = "leafref";
63 public static final String STRING = "string";
64 public static final String UINT8 = "uint8";
65 public static final String UINT16 = "uint16";
66 public static final String UINT32 = "uint32";
67 public static final String UINT64 = "uint64";
68 public static final String UNION = "union";
70 private static final Map<String, String> BUILT_IN_TYPES = ImmutableMap.<String, String>builder()
73 .put(BOOLEAN, BOOLEAN)
74 .put(DECIMAL64, DECIMAL64)
76 .put(ENUMERATION, ENUMERATION)
77 .put(IDENTITY_REF,IDENTITY_REF)
78 .put(INSTANCE_IDENTIFIER, INSTANCE_IDENTIFIER)
83 .put(LEAF_REF, LEAF_REF)
92 private static final Set<String> TYPE_BODY_STMTS = ImmutableSet.of(
93 DECIMAL64, ENUMERATION, LEAF_REF, IDENTITY_REF, BITS, UNION);
94 private static final Splitter PIPE_SPLITTER = Splitter.on('|').trimResults();
95 private static final Splitter TWO_DOTS_SPLITTER = Splitter.on("..").trimResults();
100 private static BigDecimal yangConstraintToBigDecimal(final Number number) {
101 if (UnresolvedNumber.max().equals(number)) {
102 return RangeStatementImpl.YANG_MAX_NUM;
104 if (UnresolvedNumber.min().equals(number)) {
105 return RangeStatementImpl.YANG_MIN_NUM;
108 return new BigDecimal(number.toString());
111 private static int compareNumbers(final Number n1, final Number n2) {
113 final BigDecimal num1 = yangConstraintToBigDecimal(n1);
114 final BigDecimal num2 = yangConstraintToBigDecimal(n2);
116 return new BigDecimal(num1.toString()).compareTo(new BigDecimal(num2.toString()));
119 private static Number parseIntegerConstraintValue(final StmtContext<?, ?, ?> ctx, final String value) {
120 if ("max".equals(value)) {
121 return UnresolvedNumber.max();
123 if ("min".equals(value)) {
124 return UnresolvedNumber.min();
128 return new BigInteger(value);
129 } catch (final NumberFormatException e) {
130 throw new SourceException(String.format("Value %s is not a valid integer", value),
131 ctx.getStatementSourceReference(), e);
135 private static Number parseDecimalConstraintValue(final StmtContext<?, ?, ?> ctx, final String value) {
136 if ("max".equals(value)) {
137 return UnresolvedNumber.max();
139 if ("min".equals(value)) {
140 return UnresolvedNumber.min();
144 return value.indexOf('.') != -1 ? new BigDecimal(value) : new BigInteger(value);
145 } catch (final NumberFormatException e) {
146 throw new SourceException(String.format("Value %s is not a valid decimal number", value),
147 ctx.getStatementSourceReference(), e);
151 public static List<RangeConstraint> parseRangeListFromString(final StmtContext<?, ?, ?> ctx,
152 final String rangeArgument) {
154 final Optional<String> description = Optional.absent();
155 final Optional<String> reference = Optional.absent();
157 final List<RangeConstraint> rangeConstraints = new ArrayList<>();
159 for (final String singleRange : PIPE_SPLITTER.split(rangeArgument)) {
160 final Iterator<String> boundaries = TWO_DOTS_SPLITTER.splitToList(singleRange).iterator();
161 final Number min = parseDecimalConstraintValue(ctx, boundaries.next());
164 if (boundaries.hasNext()) {
165 max = parseDecimalConstraintValue(ctx, boundaries.next());
167 // if min larger than max then error
168 InferenceException.throwIf(compareNumbers(min, max) == 1, ctx.getStatementSourceReference(),
169 "Range constraint %s has descending order of boundaries; should be ascending", singleRange);
171 SourceException.throwIf(boundaries.hasNext(), ctx.getStatementSourceReference(),
172 "Wrong number of boundaries in range constraint %s", singleRange);
177 // some of intervals overlapping
178 if (rangeConstraints.size() > 1 && compareNumbers(min, Iterables.getLast(rangeConstraints).getMax()) != 1) {
179 throw new InferenceException(ctx.getStatementSourceReference(),
180 "Some of the ranges in %s are not disjoint", rangeArgument);
183 rangeConstraints.add(new RangeConstraintEffectiveImpl(min, max, description, reference));
186 return rangeConstraints;
189 public static List<LengthConstraint> parseLengthListFromString(final StmtContext<?, ?, ?> ctx,
190 final String lengthArgument) {
191 final Optional<String> description = Optional.absent();
192 final Optional<String> reference = Optional.absent();
194 final List<LengthConstraint> lengthConstraints = new ArrayList<>();
196 for (final String singleRange : PIPE_SPLITTER.split(lengthArgument)) {
197 final Iterator<String> boundaries = TWO_DOTS_SPLITTER.splitToList(singleRange).iterator();
198 final Number min = parseIntegerConstraintValue(ctx, boundaries.next());
201 if (boundaries.hasNext()) {
202 max = parseIntegerConstraintValue(ctx, boundaries.next());
204 // if min larger than max then error
205 SourceException.throwIf(compareNumbers(min, max) == 1, ctx.getStatementSourceReference(),
206 "Length constraint %s has descending order of boundaries; should be ascending.",
208 SourceException.throwIf(boundaries.hasNext(), ctx.getStatementSourceReference(),
209 "Wrong number of boundaries in length constraint %s.", singleRange);
214 // some of intervals overlapping
215 InferenceException.throwIf(lengthConstraints.size() > 1
216 && compareNumbers(min, Iterables.getLast(lengthConstraints).getMax()) != 1,
217 ctx.getStatementSourceReference(), "Some of the length ranges in %s are not disjoint",
220 lengthConstraints.add(new LengthConstraintEffectiveImpl(min, max, description, reference));
223 return lengthConstraints;
226 public static boolean isYangTypeBodyStmtString(final String typeName) {
227 return TYPE_BODY_STMTS.contains(typeName);
230 public static boolean isYangBuiltInTypeString(final String typeName) {
231 return BUILT_IN_TYPES.containsKey(typeName);
235 public static SchemaPath typeEffectiveSchemaPath(final StmtContext<?, ?, ?> stmtCtx) {
236 final SchemaPath path = stmtCtx.getSchemaPath().get();
237 final SchemaPath parent = path.getParent();
238 final QName parentQName = parent.getLastComponent();
239 Preconditions.checkArgument(parentQName != null, "Path %s has an empty parent", path);
241 final QName qname = stmtCtx.getFromNamespace(QNameCacheNamespace.class,
242 QName.create(parentQName, path.getLastComponent().getLocalName()));
243 return parent.createChild(qname);
247 * Checks whether supplied type has any of specified default values marked
248 * with an if-feature. This method creates mutable copy of supplied set of
254 * type statement which should be checked
255 * @param defaultValues
256 * set of default values which should be checked. The method
257 * creates mutable copy of this set
259 * @return true if any of specified default values is marked with an
260 * if-feature, otherwise false
262 public static boolean hasDefaultValueMarkedWithIfFeature(final YangVersion yangVersion,
263 final TypeEffectiveStatement<?> typeStmt, final Set<String> defaultValues) {
264 return !defaultValues.isEmpty() && yangVersion == YangVersion.VERSION_1_1
265 && isRelevantForIfFeatureCheck(typeStmt)
266 && isAnyDefaultValueMarkedWithIfFeature(typeStmt, new HashSet<>(defaultValues));
270 * Checks whether supplied type has specified default value marked with an
271 * if-feature. This method creates mutable set of supplied default value.
276 * type statement which should be checked
277 * @param defaultValue
278 * default value to be checked
280 * @return true if specified default value is marked with an if-feature,
283 public static boolean hasDefaultValueMarkedWithIfFeature(final YangVersion yangVersion,
284 final TypeEffectiveStatement<?> typeStmt, final String defaultValue) {
285 final HashSet<String> defaultValues = new HashSet<>();
286 defaultValues.add(defaultValue);
287 return !Strings.isNullOrEmpty(defaultValue) && yangVersion == YangVersion.VERSION_1_1
288 && isRelevantForIfFeatureCheck(typeStmt)
289 && isAnyDefaultValueMarkedWithIfFeature(typeStmt, defaultValues);
292 static String findBuiltinString(final String rawArgument) {
293 return BUILT_IN_TYPES.get(rawArgument);
296 private static boolean isRelevantForIfFeatureCheck(final TypeEffectiveStatement<?> typeStmt) {
297 final TypeDefinition<?> typeDefinition = typeStmt.getTypeDefinition();
298 return typeDefinition instanceof EnumTypeDefinition || typeDefinition instanceof BitsTypeDefinition
299 || typeDefinition instanceof UnionTypeDefinition;
302 private static boolean isAnyDefaultValueMarkedWithIfFeature(final TypeEffectiveStatement<?> typeStmt,
303 final Set<String> defaultValues) {
304 final Iterator<? extends EffectiveStatement<?, ?>> iter = typeStmt.effectiveSubstatements().iterator();
305 while (iter.hasNext() && !defaultValues.isEmpty()) {
306 final EffectiveStatement<?, ?> effectiveSubstatement = iter.next();
307 if (YangStmtMapping.BIT.equals(effectiveSubstatement.statementDefinition())) {
308 final QName bitQName = (QName) effectiveSubstatement.argument();
309 if (defaultValues.remove(bitQName.getLocalName()) && containsIfFeature(effectiveSubstatement)) {
312 } else if (YangStmtMapping.ENUM.equals(effectiveSubstatement.statementDefinition())
313 && defaultValues.remove(effectiveSubstatement.argument())
314 && containsIfFeature(effectiveSubstatement)) {
316 } else if (effectiveSubstatement instanceof TypeEffectiveStatement && isAnyDefaultValueMarkedWithIfFeature(
317 (TypeEffectiveStatement<?>) effectiveSubstatement, defaultValues)) {
325 private static boolean containsIfFeature(final EffectiveStatement<?, ?> effectiveStatement) {
326 for (final EffectiveStatement<?, ?> effectiveSubstatement : effectiveStatement.effectiveSubstatements()) {
327 if (YangStmtMapping.IF_FEATURE.equals(effectiveSubstatement.statementDefinition())) {