| 1 | // License: GPL. For details, see LICENSE file.
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| 2 | package org.openstreetmap.josm.gui.mappaint.mapcss;
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| 3 |
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| 4 | import java.text.MessageFormat;
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| 5 | import java.util.Arrays;
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| 6 | import java.util.EnumSet;
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| 7 | import java.util.Objects;
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| 8 | import java.util.Set;
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| 9 | import java.util.regex.Pattern;
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| 10 |
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| 11 | import org.openstreetmap.josm.data.osm.Node;
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| 12 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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| 13 | import org.openstreetmap.josm.data.osm.Relation;
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| 14 | import org.openstreetmap.josm.data.osm.Tag;
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| 15 | import org.openstreetmap.josm.data.osm.Way;
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| 16 | import org.openstreetmap.josm.gui.mappaint.Cascade;
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| 17 | import org.openstreetmap.josm.gui.mappaint.ElemStyles;
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| 18 | import org.openstreetmap.josm.gui.mappaint.Environment;
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| 19 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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| 20 | import org.openstreetmap.josm.tools.Predicate;
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| 21 | import org.openstreetmap.josm.tools.Predicates;
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| 22 | import org.openstreetmap.josm.tools.Utils;
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| 23 |
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| 24 | public abstract class Condition {
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| 25 |
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| 26 | public abstract boolean applies(Environment e);
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| 27 |
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| 28 | public static Condition createKeyValueCondition(String k, String v, Op op, Context context, boolean considerValAsKey) {
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| 29 | switch (context) {
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| 30 | case PRIMITIVE:
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| 31 | if (KeyValueRegexpCondition.SUPPORTED_OPS.contains(op) && !considerValAsKey)
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| 32 | return new KeyValueRegexpCondition(k, v, op, false);
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| 33 | if (!considerValAsKey && op.equals(Op.EQ))
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| 34 | return new SimpleKeyValueCondition(k, v);
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| 35 | return new KeyValueCondition(k, v, op, considerValAsKey);
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| 36 | case LINK:
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| 37 | if (considerValAsKey)
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| 38 | throw new MapCSSException("''considerValAsKey'' not supported in LINK context");
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| 39 | if ("role".equalsIgnoreCase(k))
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| 40 | return new RoleCondition(v, op);
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| 41 | else if ("index".equalsIgnoreCase(k))
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| 42 | return new IndexCondition(v, op);
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| 43 | else
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| 44 | throw new MapCSSException(
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| 45 | MessageFormat.format("Expected key ''role'' or ''index'' in link context. Got ''{0}''.", k));
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| 46 |
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| 47 | default: throw new AssertionError();
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| 48 | }
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| 49 | }
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| 50 |
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| 51 | public static Condition createKeyCondition(String k, boolean not, KeyMatchType matchType, Context context) {
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| 52 | switch (context) {
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| 53 | case PRIMITIVE:
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| 54 | return new KeyCondition(k, not, matchType);
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| 55 | case LINK:
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| 56 | if (matchType != null)
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| 57 | throw new MapCSSException("Question mark operator ''?'' and regexp match not supported in LINK context");
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| 58 | if (not)
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| 59 | return new RoleCondition(k, Op.NEQ);
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| 60 | else
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| 61 | return new RoleCondition(k, Op.EQ);
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| 62 |
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| 63 | default: throw new AssertionError();
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| 64 | }
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| 65 | }
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| 66 |
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| 67 | public static PseudoClassCondition createPseudoClassCondition(String id, boolean not, Context context) {
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| 68 | return new PseudoClassCondition(id, not, context);
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| 69 | }
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| 70 |
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| 71 | public static ClassCondition createClassCondition(String id, boolean not, Context context) {
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| 72 | return new ClassCondition(id, not);
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| 73 | }
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| 74 |
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| 75 | public static ExpressionCondition createExpressionCondition(Expression e, Context context) {
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| 76 | return new ExpressionCondition(e);
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| 77 | }
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| 78 |
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| 79 | public static enum Op {
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| 80 | EQ, NEQ, GREATER_OR_EQUAL, GREATER, LESS_OR_EQUAL, LESS,
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| 81 | REGEX, NREGEX, ONE_OF, BEGINS_WITH, ENDS_WITH, CONTAINS;
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| 82 |
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| 83 | private static final Set<Op> NEGATED_OPS = EnumSet.of(NEQ, NREGEX);
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| 84 |
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| 85 | public boolean eval(String testString, String prototypeString) {
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| 86 | if (testString == null && !NEGATED_OPS.contains(this))
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| 87 | return false;
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| 88 | switch (this) {
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| 89 | case EQ:
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| 90 | return Objects.equals(testString, prototypeString);
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| 91 | case NEQ:
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| 92 | return !Objects.equals(testString, prototypeString);
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| 93 | case REGEX:
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| 94 | case NREGEX:
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| 95 | final boolean contains = Pattern.compile(prototypeString).matcher(testString).find();
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| 96 | return REGEX.equals(this) ? contains : !contains;
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| 97 | case ONE_OF:
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| 98 | return Arrays.asList(testString.split("\\s*;\\s*")).contains(prototypeString);
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| 99 | case BEGINS_WITH:
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| 100 | return testString.startsWith(prototypeString);
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| 101 | case ENDS_WITH:
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| 102 | return testString.endsWith(prototypeString);
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| 103 | case CONTAINS:
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| 104 | return testString.contains(prototypeString);
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| 105 | }
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| 106 |
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| 107 | float test_float;
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| 108 | try {
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| 109 | test_float = Float.parseFloat(testString);
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| 110 | } catch (NumberFormatException e) {
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| 111 | return false;
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| 112 | }
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| 113 | float prototype_float = Float.parseFloat(prototypeString);
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| 114 |
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| 115 | switch (this) {
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| 116 | case GREATER_OR_EQUAL:
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| 117 | return test_float >= prototype_float;
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| 118 | case GREATER:
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| 119 | return test_float > prototype_float;
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| 120 | case LESS_OR_EQUAL:
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| 121 | return test_float <= prototype_float;
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| 122 | case LESS:
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| 123 | return test_float < prototype_float;
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| 124 | default:
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| 125 | throw new AssertionError();
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| 126 | }
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| 127 | }
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| 128 | }
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| 129 |
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| 130 | /**
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| 131 | * Context, where the condition applies.
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| 132 | */
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| 133 | public static enum Context {
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| 134 | /**
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| 135 | * normal primitive selector, e.g. way[highway=residential]
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| 136 | */
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| 137 | PRIMITIVE,
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| 138 |
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| 139 | /**
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| 140 | * link between primitives, e.g. relation >[role=outer] way
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| 141 | */
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| 142 | LINK
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| 143 | }
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| 144 |
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| 145 | public static final EnumSet<Op> COMPARISON_OPERATERS =
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| 146 | EnumSet.of(Op.GREATER_OR_EQUAL, Op.GREATER, Op.LESS_OR_EQUAL, Op.LESS);
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| 147 |
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| 148 | /**
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| 149 | * Most common case of a KeyValueCondition.
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| 150 | *
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| 151 | * Extra class for performance reasons.
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| 152 | */
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| 153 | public static class SimpleKeyValueCondition extends Condition {
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| 154 | public final String k;
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| 155 | public final String v;
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| 156 |
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| 157 | public SimpleKeyValueCondition(String k, String v) {
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| 158 | this.k = k;
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| 159 | this.v = v;
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| 160 | }
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| 161 |
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| 162 | @Override
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| 163 | public boolean applies(Environment e) {
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| 164 | return v.equals(e.osm.get(k));
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| 165 | }
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| 166 |
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| 167 | public Tag asTag() {
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| 168 | return new Tag(k, v);
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| 169 | }
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| 170 |
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| 171 | @Override
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| 172 | public String toString() {
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| 173 | return '[' + k + '=' + v + ']';
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| 174 | }
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| 175 |
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| 176 | }
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| 177 |
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| 178 | /**
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| 179 | * <p>Represents a key/value condition which is either applied to a primitive.</p>
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| 180 | *
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| 181 | */
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| 182 | public static class KeyValueCondition extends Condition {
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| 183 |
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| 184 | public final String k;
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| 185 | public final String v;
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| 186 | public final Op op;
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| 187 | public boolean considerValAsKey;
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| 188 |
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| 189 | /**
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| 190 | * <p>Creates a key/value-condition.</p>
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| 191 | *
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| 192 | * @param k the key
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| 193 | * @param v the value
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| 194 | * @param op the operation
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| 195 | * @param considerValAsKey whether to consider {@code v} as another key and compare the values of key {@code k} and key {@code v}.
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| 196 | */
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| 197 | public KeyValueCondition(String k, String v, Op op, boolean considerValAsKey) {
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| 198 | this.k = k;
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| 199 | this.v = v;
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| 200 | this.op = op;
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| 201 | this.considerValAsKey = considerValAsKey;
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| 202 | }
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| 203 |
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| 204 | @Override
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| 205 | public boolean applies(Environment env) {
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| 206 | return op.eval(env.osm.get(k), considerValAsKey ? env.osm.get(v) : v);
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| 207 | }
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| 208 |
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| 209 | public Tag asTag() {
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| 210 | return new Tag(k, v);
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| 211 | }
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| 212 |
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| 213 | @Override
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| 214 | public String toString() {
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| 215 | return "[" + k + "'" + op + "'" + v + "]";
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| 216 | }
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| 217 | }
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| 218 |
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| 219 | public static class KeyValueRegexpCondition extends KeyValueCondition {
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| 220 |
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| 221 | public final Pattern pattern;
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| 222 | public static final EnumSet<Op> SUPPORTED_OPS = EnumSet.of(Op.REGEX, Op.NREGEX);
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| 223 |
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| 224 | public KeyValueRegexpCondition(String k, String v, Op op, boolean considerValAsKey) {
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| 225 | super(k, v, op, considerValAsKey);
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| 226 | CheckParameterUtil.ensureThat(!considerValAsKey, "considerValAsKey is not supported");
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| 227 | CheckParameterUtil.ensureThat(SUPPORTED_OPS.contains(op), "Op must be REGEX or NREGEX");
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| 228 | this.pattern = Pattern.compile(v);
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| 229 | }
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| 230 |
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| 231 | @Override
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| 232 | public boolean applies(Environment env) {
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| 233 | final String value = env.osm.get(k);
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| 234 | if (Op.REGEX.equals(op)) {
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| 235 | return value != null && pattern.matcher(value).find();
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| 236 | } else if (Op.NREGEX.equals(op)) {
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| 237 | return value == null || !pattern.matcher(value).find();
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| 238 | } else {
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| 239 | throw new IllegalStateException();
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| 240 | }
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| 241 | }
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| 242 | }
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| 243 |
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| 244 | public static class RoleCondition extends Condition {
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| 245 | public final String role;
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| 246 | public final Op op;
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| 247 |
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| 248 | public RoleCondition(String role, Op op) {
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| 249 | this.role = role;
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| 250 | this.op = op;
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| 251 | }
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| 252 |
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| 253 | @Override
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| 254 | public boolean applies(Environment env) {
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| 255 | String testRole = env.getRole();
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| 256 | if (testRole == null) return false;
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| 257 | return op.eval(testRole, role);
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| 258 | }
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| 259 | }
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| 260 |
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| 261 | public static class IndexCondition extends Condition {
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| 262 | public final String index;
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| 263 | public final Op op;
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| 264 |
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| 265 | public IndexCondition(String index, Op op) {
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| 266 | this.index = index;
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| 267 | this.op = op;
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| 268 | }
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| 269 |
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| 270 | @Override
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| 271 | public boolean applies(Environment env) {
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| 272 | if (env.index == null) return false;
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| 273 | return op.eval(Integer.toString(env.index + 1), index);
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| 274 | }
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| 275 | }
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| 276 |
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| 277 | public static enum KeyMatchType {
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| 278 | EQ, TRUE, FALSE, REGEX
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| 279 | }
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| 280 |
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| 281 | /**
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| 282 | * <p>KeyCondition represent one of the following conditions in either the link or the
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| 283 | * primitive context:</p>
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| 284 | * <pre>
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| 285 | * ["a label"] PRIMITIVE: the primitive has a tag "a label"
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| 286 | * LINK: the parent is a relation and it has at least one member with the role
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| 287 | * "a label" referring to the child
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| 288 | *
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| 289 | * [!"a label"] PRIMITIVE: the primitive doesn't have a tag "a label"
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| 290 | * LINK: the parent is a relation but doesn't have a member with the role
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| 291 | * "a label" referring to the child
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| 292 | *
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| 293 | * ["a label"?] PRIMITIVE: the primitive has a tag "a label" whose value evaluates to a true-value
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| 294 | * LINK: not supported
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| 295 | *
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| 296 | * ["a label"?!] PRIMITIVE: the primitive has a tag "a label" whose value evaluates to a false-value
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| 297 | * LINK: not supported
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| 298 | * </pre>
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| 299 | */
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| 300 | public static class KeyCondition extends Condition {
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| 301 |
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| 302 | public final String label;
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| 303 | public final boolean negateResult;
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| 304 | public final KeyMatchType matchType;
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| 305 | public Predicate<String> containsPattern;
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| 306 |
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| 307 | public KeyCondition(String label, boolean negateResult, KeyMatchType matchType){
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| 308 | this.label = label;
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| 309 | this.negateResult = negateResult;
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| 310 | this.matchType = matchType;
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| 311 | this.containsPattern = KeyMatchType.REGEX.equals(matchType)
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| 312 | ? Predicates.stringContainsPattern(Pattern.compile(label))
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| 313 | : null;
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| 314 | }
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| 315 |
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| 316 | @Override
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| 317 | public boolean applies(Environment e) {
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| 318 | switch(e.getContext()) {
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| 319 | case PRIMITIVE:
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| 320 | if (KeyMatchType.TRUE.equals(matchType))
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| 321 | return e.osm.isKeyTrue(label) ^ negateResult;
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| 322 | else if (KeyMatchType.FALSE.equals(matchType))
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| 323 | return e.osm.isKeyFalse(label) ^ negateResult;
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| 324 | else if (KeyMatchType.REGEX.equals(matchType)) {
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| 325 | return Utils.exists(e.osm.keySet(), containsPattern) ^ negateResult;
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| 326 | } else {
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| 327 | return e.osm.hasKey(label) ^ negateResult;
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| 328 | }
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| 329 | case LINK:
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| 330 | Utils.ensure(false, "Illegal state: KeyCondition not supported in LINK context");
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| 331 | return false;
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| 332 | default: throw new AssertionError();
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| 333 | }
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| 334 | }
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| 335 |
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| 336 | public Tag asTag() {
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| 337 | return new Tag(label);
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| 338 | }
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| 339 |
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| 340 | @Override
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| 341 | public String toString() {
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| 342 | return "[" + (negateResult ? "!" : "") + label + "]";
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| 343 | }
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| 344 | }
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| 345 |
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| 346 | public static class ClassCondition extends Condition {
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| 347 |
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| 348 | public final String id;
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| 349 | public final boolean not;
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| 350 |
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| 351 | public ClassCondition(String id, boolean not) {
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| 352 | this.id = id;
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| 353 | this.not = not;
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| 354 | }
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| 355 |
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| 356 | @Override
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| 357 | public boolean applies(Environment env) {
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| 358 | return env != null && env.getCascade(env.layer) != null && not ^ env.getCascade(env.layer).containsKey(id);
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| 359 | }
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| 360 |
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| 361 | @Override
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| 362 | public String toString() {
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| 363 | return (not ? "!" : "") + "." + id;
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| 364 | }
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| 365 | }
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| 366 |
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| 367 | public static class PseudoClassCondition extends Condition {
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| 368 |
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| 369 | public final String id;
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| 370 | public final boolean not;
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| 371 |
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| 372 | public PseudoClassCondition(String id, boolean not, Context context) {
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| 373 | this.id = id;
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| 374 | this.not = not;
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| 375 | CheckParameterUtil.ensureThat(!"sameTags".equals(id) || Context.LINK.equals(context), "sameTags only supported in LINK context");
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| 376 | }
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| 377 |
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| 378 | @Override
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| 379 | public boolean applies(Environment e) {
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| 380 | return not ^ appliesImpl(e);
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| 381 | }
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| 382 |
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| 383 | public boolean appliesImpl(Environment e) {
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| 384 | switch(id) {
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| 385 | case "closed":
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| 386 | if (e.osm instanceof Way && ((Way) e.osm).isClosed())
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| 387 | return true;
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| 388 | if (e.osm instanceof Relation && ((Relation) e.osm).isMultipolygon())
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| 389 | return true;
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| 390 | break;
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| 391 | case "modified":
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| 392 | return e.osm.isModified() || e.osm.isNewOrUndeleted();
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| 393 | case "new":
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| 394 | return e.osm.isNew();
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| 395 | case "connection":
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| 396 | return e.osm instanceof Node && ((Node) e.osm).isConnectionNode();
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| 397 | case "tagged":
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| 398 | return e.osm.isTagged();
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| 399 | case "sameTags":
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| 400 | return e.osm.hasSameInterestingTags(Utils.firstNonNull(e.child, e.parent));
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| 401 | case "areaStyle":
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| 402 | return ElemStyles.hasAreaElemStyle(e.osm, false);
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| 403 | case "unconnected":
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| 404 | return e.osm instanceof Node && OsmPrimitive.getFilteredList(e.osm.getReferrers(), Way.class).isEmpty();
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| 405 | }
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| 406 | return false;
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| 407 | }
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| 408 |
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| 409 | @Override
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| 410 | public String toString() {
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| 411 | return ":" + (not ? "!" : "") + id;
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| 412 | }
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| 413 | }
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| 414 |
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| 415 | public static class ExpressionCondition extends Condition {
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| 416 |
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| 417 | private final Expression e;
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| 418 |
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| 419 | public ExpressionCondition(Expression e) {
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| 420 | this.e = e;
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| 421 | }
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| 422 |
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| 423 | @Override
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| 424 | public boolean applies(Environment env) {
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| 425 | Boolean b = Cascade.convertTo(e.evaluate(env), Boolean.class);
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| 426 | return b != null && b;
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| 427 | }
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| 428 |
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| 429 | @Override
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| 430 | public String toString() {
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| 431 | return "[" + e + "]";
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| 432 | }
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| 433 | }
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| 434 | }
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