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.mdsal.binding.java.api.generator;
10 import com.google.common.base.Preconditions;
11 import com.google.common.collect.Range;
12 import java.util.ArrayList;
13 import java.util.Collection;
14 import java.util.List;
16 import java.util.function.Function;
17 import javax.annotation.Nonnull;
18 import org.opendaylight.yangtools.yang.binding.CodeHelpers;
19 import org.opendaylight.yangtools.yang.model.api.type.RangeConstraint;
20 import org.slf4j.Logger;
21 import org.slf4j.LoggerFactory;
23 abstract class AbstractPrimitiveRangeGenerator<T extends Number & Comparable<T>> extends AbstractRangeGenerator<T> {
24 private static final Logger LOG = LoggerFactory.getLogger(AbstractPrimitiveRangeGenerator.class);
25 private final String primitiveName;
26 private final T minValue;
27 private final T maxValue;
29 protected AbstractPrimitiveRangeGenerator(final Class<T> typeClass, final String primitiveName, final T minValue, final T maxValue) {
31 this.primitiveName = Preconditions.checkNotNull(primitiveName);
32 this.minValue = Preconditions.checkNotNull(minValue);
33 this.maxValue = Preconditions.checkNotNull(maxValue);
37 * Return the name of the primitive type, as known by the Java language.
39 * @return Primitive type name
41 @Nonnull protected final String getPrimitiveName() {
45 private boolean needsMaximumEnforcement(final T maxToEnforce) {
46 return maxValue.compareTo(maxToEnforce) > 0;
49 private boolean needsMinimumEnforcement(final T minToEnforce) {
50 return minValue.compareTo(minToEnforce) < 0;
53 private Collection<String> createExpressions(final RangeConstraint<?> constraint) {
54 final Set<? extends Range<? extends Number>> constraints = constraint.getAllowedRanges().asRanges();
55 final Collection<String> ret = new ArrayList<>(constraints.size());
57 for (Range<? extends Number> r : constraints) {
58 final T min = getValue(r.lowerEndpoint());
59 final boolean needMin = needsMinimumEnforcement(min);
61 final T max = getValue(r.upperEndpoint());
62 final boolean needMax = needsMaximumEnforcement(max);
64 if (!needMin && !needMax) {
65 LOG.debug("Type {} indicates [{}, {}] does not require enforcement", getTypeName(), min, max);
69 final StringBuilder sb = new StringBuilder();
71 sb.append("value >= ").append(format(min));
77 sb.append("value <= ").append(format(max));
80 ret.add(sb.toString());
86 private String createRangeString(final RangeConstraint<?> constraint) {
87 final Set<? extends Range<? extends Number>> constraints = constraint.getAllowedRanges().asRanges();
88 final List<Range<T>> ranges = new ArrayList<>(constraints.size());
90 for (Range<? extends Number> c : constraints) {
91 ranges.add(Range.closed(getValue(c.lowerEndpoint()), getValue(c.upperEndpoint())));
94 return ranges.toString();
98 protected final String generateRangeCheckerImplementation(final String checkerName,
99 final RangeConstraint<?> constraints, final Function<Class<?>, String> classImporter) {
100 final StringBuilder sb = new StringBuilder();
101 final Collection<String> expressions = createExpressions(constraints);
103 sb.append("private static void ").append(checkerName).append("(final ").append(primitiveName).append(" value) {\n");
105 if (!expressions.isEmpty()) {
106 for (String exp : expressions) {
107 sb.append(" if (").append(exp).append(") {\n");
108 sb.append(" return;\n");
112 sb.append(" ").append(classImporter.apply(CodeHelpers.class)).append(".throwInvalidRange(\"")
113 .append(createRangeString(constraints)).append("\", value);\n");
118 return sb.toString();