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.data.impl.codec;
10 import static org.opendaylight.yangtools.yang.model.util.BaseTypes.INT16_QNAME;
11 import static org.opendaylight.yangtools.yang.model.util.BaseTypes.INT32_QNAME;
12 import static org.opendaylight.yangtools.yang.model.util.BaseTypes.INT64_QNAME;
13 import static org.opendaylight.yangtools.yang.model.util.BaseTypes.INT8_QNAME;
14 import static org.opendaylight.yangtools.yang.model.util.BaseTypes.UINT16_QNAME;
15 import static org.opendaylight.yangtools.yang.model.util.BaseTypes.UINT32_QNAME;
16 import static org.opendaylight.yangtools.yang.model.util.BaseTypes.UINT64_QNAME;
17 import static org.opendaylight.yangtools.yang.model.util.BaseTypes.UINT8_QNAME;
18 import com.google.common.base.CharMatcher;
19 import com.google.common.base.Optional;
20 import com.google.common.base.Preconditions;
21 import com.google.common.collect.Range;
22 import java.util.ArrayList;
23 import java.util.Collections;
24 import java.util.List;
25 import java.util.regex.Pattern;
26 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
27 import org.opendaylight.yangtools.yang.model.api.type.IntegerTypeDefinition;
28 import org.opendaylight.yangtools.yang.model.api.type.RangeConstraint;
29 import org.opendaylight.yangtools.yang.model.api.type.UnsignedIntegerTypeDefinition;
31 abstract class AbstractIntegerStringCodec<N extends Number & Comparable<N>, T extends TypeDefinition<T>> extends TypeDefinitionAwareCodec<N, T>{
33 private static final Pattern INT_PATTERN = Pattern.compile("[+-]?[1-9][0-9]*$");
34 private static final Pattern HEX_PATTERN = Pattern.compile("[+-]?0[xX][0-9a-fA-F]+");
35 private static final Pattern OCT_PATTERN = Pattern.compile("[+-]?0[1-7][0-7]*$");
37 // For up to two characters, this is very fast
38 private static final CharMatcher X_MATCHER = CharMatcher.anyOf("xX");
40 private static final String INCORRECT_LEXICAL_REPRESENTATION = "Incorrect lexical representation of integer value: %s."
41 + "\nAn integer value can be defined as: "
42 + "\n - a decimal number,"
43 + "\n - a hexadecimal number (prefix 0x)," + "%n - an octal number (prefix 0)."
44 + "\nSigned values are allowed. Spaces between digits are NOT allowed.";
47 private final List<Range<N>> rangeConstraints;
49 protected AbstractIntegerStringCodec(final Optional<T> typeDefinition, final List<RangeConstraint> constraints , final Class<N> outputClass) {
50 super(typeDefinition, outputClass);
51 if (constraints.isEmpty()) {
52 rangeConstraints = Collections.emptyList();
54 final List<Range<N>> builder = new ArrayList<>(constraints.size());
55 for (final RangeConstraint yangConstraint : constraints) {
56 builder.add(createRange(yangConstraint.getMin(), yangConstraint.getMax()));
58 rangeConstraints = builder;
62 static TypeDefinitionAwareCodec<?, IntegerTypeDefinition> from(final IntegerTypeDefinition type) {
63 // FIXME: this is not necessary with yang.model.util.type
64 IntegerTypeDefinition baseType = type;
65 while (baseType.getBaseType() != null) {
66 baseType = baseType.getBaseType();
69 final Optional<IntegerTypeDefinition> typeOptional = Optional.of(type);
71 // FIXME: use DerivedTypes#isInt8() and friends
72 if (INT8_QNAME.equals(baseType.getQName())) {
73 return new Int8StringCodec(typeOptional);
74 } else if (INT16_QNAME.equals(baseType.getQName())) {
75 return new Int16StringCodec(typeOptional);
76 } else if (INT32_QNAME.equals(baseType.getQName())) {
77 return new Int32StringCodec(typeOptional);
78 } else if (INT64_QNAME.equals(baseType.getQName())) {
79 return new Int64StringCodec(typeOptional);
81 throw new IllegalArgumentException("Unsupported base type: " + baseType.getQName());
85 static TypeDefinitionAwareCodec<?, UnsignedIntegerTypeDefinition> from(final UnsignedIntegerTypeDefinition type) {
86 // FIXME: this is not necessary with yang.model.util.type
87 UnsignedIntegerTypeDefinition baseType = type;
88 while (baseType.getBaseType() != null) {
89 baseType = baseType.getBaseType();
92 final Optional<UnsignedIntegerTypeDefinition> typeOptional = Optional.of(type);
94 // FIXME: use DerivedTypes#isUint8() and friends
95 if (UINT8_QNAME.equals(baseType.getQName())) {
96 return new Uint8StringCodec(typeOptional);
97 } else if (UINT16_QNAME.equals(baseType.getQName())) {
98 return new Uint16StringCodec(typeOptional);
99 } else if (UINT32_QNAME.equals(baseType.getQName())) {
100 return new Uint32StringCodec(typeOptional);
101 } else if (UINT64_QNAME.equals(baseType.getQName())) {
102 return new Uint64StringCodec(typeOptional);
104 throw new IllegalArgumentException("Unsupported base type: " + baseType.getQName());
108 private Range<N> createRange(final Number yangMin, final Number yangMax) {
109 final N min = convertValue(yangMin);
110 final N max = convertValue(yangMax);
111 return Range.closed(min, max);
115 public final N deserialize(final String stringRepresentation) {
116 final int base = provideBase(stringRepresentation);
117 final N deserialized;
119 deserialized = deserialize(normalizeHexadecimal(stringRepresentation),base);
121 deserialized = deserialize(stringRepresentation,base);
123 validate(deserialized);
128 private void validate(final N value) {
129 if (rangeConstraints.isEmpty()) {
132 for (final Range<N> constraint : rangeConstraints) {
133 if (constraint.contains(value)) {
137 throw new IllegalArgumentException("Value '" + value + "' is not in required range " + rangeConstraints);
141 * Deserializes value from supplied string representation
144 * See {@link Integer#parseInt(String, int)} for in-depth
145 * description about string and radix relationship.
147 * @param stringRepresentation String representation
148 * @param radix numeric base.
149 * @return Deserialized value.
151 protected abstract N deserialize(String stringRepresentation, int radix);
153 protected abstract N convertValue(Number value);
156 protected static List<RangeConstraint> extractRange(final IntegerTypeDefinition type) {
158 return Collections.emptyList();
160 return type.getRangeConstraints();
163 protected static List<RangeConstraint> extractRange(final UnsignedIntegerTypeDefinition type) {
165 return Collections.emptyList();
167 return type.getRangeConstraints();
170 private static int provideBase(final String integer) {
171 Preconditions.checkArgument(integer != null, "String representing integer number cannot be NULL");
173 if (integer.length() == 1 && integer.charAt(0) == '0') {
175 } else if (INT_PATTERN.matcher(integer).matches()) {
177 } else if (HEX_PATTERN.matcher(integer).matches()) {
179 } else if (OCT_PATTERN.matcher(integer).matches()) {
182 throw new NumberFormatException(String.format(INCORRECT_LEXICAL_REPRESENTATION, integer));
186 private static String normalizeHexadecimal(final String hexInt) {
187 Preconditions.checkArgument(hexInt != null,
188 "String representing integer number in Hexadecimal format cannot be NULL!");
190 return X_MATCHER.removeFrom(hexInt);