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 static java.util.Objects.requireNonNull;
12 import com.google.common.collect.Range;
13 import java.util.ArrayList;
14 import java.util.Collection;
15 import java.util.List;
17 import java.util.function.Function;
18 import org.eclipse.jdt.annotation.NonNull;
19 import org.opendaylight.yangtools.yang.binding.CodeHelpers;
20 import org.opendaylight.yangtools.yang.model.api.type.RangeConstraint;
21 import org.slf4j.Logger;
22 import org.slf4j.LoggerFactory;
24 abstract class AbstractPrimitiveRangeGenerator<T extends Number & Comparable<T>> extends AbstractRangeGenerator<T> {
25 private static final Logger LOG = LoggerFactory.getLogger(AbstractPrimitiveRangeGenerator.class);
26 private final String primitiveName;
27 private final T minValue;
28 private final T maxValue;
30 protected AbstractPrimitiveRangeGenerator(final Class<T> typeClass, final String primitiveName, final T minValue,
33 this.primitiveName = requireNonNull(primitiveName);
34 this.minValue = requireNonNull(minValue);
35 this.maxValue = requireNonNull(maxValue);
39 * Return the name of the primitive type, as known by the Java language.
41 * @return Primitive type name
43 protected final @NonNull String getPrimitiveName() {
47 private boolean needsMaximumEnforcement(final T maxToEnforce) {
48 return maxValue.compareTo(maxToEnforce) > 0;
51 private boolean needsMinimumEnforcement(final T minToEnforce) {
52 return minValue.compareTo(minToEnforce) < 0;
55 private Collection<String> createExpressions(final RangeConstraint<?> constraint) {
56 final Set<? extends Range<? extends Number>> constraints = constraint.getAllowedRanges().asRanges();
57 final Collection<String> ret = new ArrayList<>(constraints.size());
59 for (Range<? extends Number> r : constraints) {
60 final T min = getValue(r.lowerEndpoint());
61 final boolean needMin = needsMinimumEnforcement(min);
63 final T max = getValue(r.upperEndpoint());
64 final boolean needMax = needsMaximumEnforcement(max);
66 if (!needMin && !needMax) {
67 LOG.debug("Type {} indicates [{}, {}] does not require enforcement", getTypeName(), min, max);
71 final StringBuilder sb = new StringBuilder();
73 sb.append("value >= ").append(format(min));
79 sb.append("value <= ").append(format(max));
82 ret.add(sb.toString());
88 private String createRangeString(final RangeConstraint<?> constraint) {
89 final Set<? extends Range<? extends Number>> constraints = constraint.getAllowedRanges().asRanges();
90 final List<Range<T>> ranges = new ArrayList<>(constraints.size());
92 for (Range<? extends Number> c : constraints) {
93 ranges.add(Range.closed(getValue(c.lowerEndpoint()), getValue(c.upperEndpoint())));
96 return ranges.toString();
100 protected final String generateRangeCheckerImplementation(final String checkerName,
101 final RangeConstraint<?> constraints, final Function<Class<?>, String> classImporter) {
102 final StringBuilder sb = new StringBuilder();
103 final Collection<String> expressions = createExpressions(constraints);
105 sb.append("private static void ").append(checkerName).append("(final ").append(primitiveName)
106 .append(" value) {\n");
108 if (!expressions.isEmpty()) {
109 for (String exp : expressions) {
110 sb.append(" if (").append(exp).append(") {\n");
111 sb.append(" return;\n");
115 sb.append(" ").append(classImporter.apply(CodeHelpers.class)).append(".throwInvalidRange(\"")
116 .append(createRangeString(constraints)).append("\", value);\n");
119 return sb.append("}\n").toString();