2 * Copyright (c) 2017 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.mdsal.binding.javav2.java.api.generator.range_generators;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.collect.ImmutableMap;
13 import com.google.common.collect.ImmutableMap.Builder;
15 import javax.annotation.Nonnull;
16 import org.opendaylight.mdsal.binding.javav2.model.api.ConcreteType;
17 import org.opendaylight.mdsal.binding.javav2.model.api.Type;
18 import org.opendaylight.yangtools.yang.model.api.type.RangeConstraint;
19 import org.slf4j.Logger;
20 import org.slf4j.LoggerFactory;
22 public abstract class AbstractRangeGenerator<T extends Number & Comparable<T>> {
23 private static final Logger LOG = LoggerFactory.getLogger(AbstractRangeGenerator.class);
24 private static final Map<String, AbstractRangeGenerator<?>> GENERATORS;
26 private static void addGenerator(final Builder<String, AbstractRangeGenerator<?>> builder,
27 final AbstractRangeGenerator<?> generator) {
28 builder.put(generator.getTypeClass().getCanonicalName(), generator);
32 final Builder<String, AbstractRangeGenerator<?>> b = ImmutableMap.builder();
33 addGenerator(b, new ByteRangeGenerator());
34 addGenerator(b, new ShortRangeGenerator());
35 addGenerator(b, new IntegerRangeGenerator());
36 addGenerator(b, new LongRangeGenerator());
37 addGenerator(b, new Uint8RangeGenerator());
38 addGenerator(b, new Uint16RangeGenerator());
39 addGenerator(b, new Uint32RangeGenerator());
40 addGenerator(b, new Uint64RangeGenerator());
41 addGenerator(b, new BigDecimalRangeGenerator());
42 addGenerator(b, new BigIntegerRangeGenerator());
43 GENERATORS = b.build();
46 private final Class<T> type;
48 protected AbstractRangeGenerator(final Class<T> typeClass) {
49 this.type = requireNonNull(typeClass);
52 public static AbstractRangeGenerator<?> forType(@Nonnull final Type type) {
53 final ConcreteType javaType = TypeUtils.getBaseYangType(type);
54 return GENERATORS.get(javaType.getFullyQualifiedName());
58 * Return the type's class.
60 * @return A class object
62 @Nonnull protected final Class<T> getTypeClass() {
67 * Return the type's fully-qualified name.
69 * @return Fully-qualified name
71 @Nonnull protected final String getTypeName() {
72 return type.getName();
76 * Return the value in the native type from a particular Number instance.
78 * @param value Value as a Number
79 * @return Value in native format.
81 @Nonnull protected final T getValue(final Number value) {
82 if (type.isInstance(value)) {
83 return type.cast(value);
86 LOG.debug("Converting value {} from {} to {}", value, value.getClass(), type);
87 final T ret = convert(value);
89 // Check if the conversion lost any precision by performing conversion the other way around
90 final AbstractRangeGenerator<?> gen = GENERATORS.get(value.getClass().getName());
91 final Number check = gen.convert(ret);
92 if (!value.equals(check)) {
93 LOG.warn("Number class conversion from {} to {} truncated value {} to {}", value.getClass(),
100 // FIXME: Once BUG-3399 is fixed, we should never need this
101 protected abstract T convert(Number value);
104 * Format a value into a Java-compilable expression which results in the appropriate
107 * @param value Number value
108 * @return Java language string representation
110 @Nonnull protected abstract String format(T value);
113 * Generate the checker method source code.
114 * @param checkerName Name of the checker method.
115 * @param constraint Restrictions which need to be applied.
116 * @return Method source code.
118 @Nonnull protected abstract String generateRangeCheckerImplementation(@Nonnull String checkerName,
119 @Nonnull RangeConstraint<?> constraint);
121 private static String rangeCheckerName(final String member) {
122 return "check" + member + "Range";
125 public String generateRangeChecker(@Nonnull final String member, @Nonnull final RangeConstraint<?> constraint) {
126 return generateRangeCheckerImplementation(rangeCheckerName(member), constraint);
129 public String generateRangeCheckerCall(@Nonnull final String member, @Nonnull final String valueReference) {
130 return rangeCheckerName(member) + '(' + valueReference + ");\n";