1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.validation.tests;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.io.BufferedReader;
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7 | import java.io.IOException;
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8 | import java.io.Reader;
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9 | import java.util.ArrayList;
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10 | import java.util.Arrays;
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11 | import java.util.Collection;
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12 | import java.util.Collections;
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13 | import java.util.HashMap;
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14 | import java.util.Iterator;
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15 | import java.util.LinkedHashMap;
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16 | import java.util.LinkedList;
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17 | import java.util.List;
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18 | import java.util.Map;
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19 | import java.util.regex.Matcher;
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20 | import java.util.regex.Pattern;
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21 |
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22 | import org.openstreetmap.josm.Main;
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23 | import org.openstreetmap.josm.command.ChangePropertyCommand;
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24 | import org.openstreetmap.josm.command.ChangePropertyKeyCommand;
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25 | import org.openstreetmap.josm.command.Command;
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26 | import org.openstreetmap.josm.command.SequenceCommand;
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27 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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28 | import org.openstreetmap.josm.data.osm.Tag;
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29 | import org.openstreetmap.josm.data.validation.FixableTestError;
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30 | import org.openstreetmap.josm.data.validation.Severity;
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31 | import org.openstreetmap.josm.data.validation.Test;
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32 | import org.openstreetmap.josm.data.validation.TestError;
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33 | import org.openstreetmap.josm.gui.mappaint.Environment;
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34 | import org.openstreetmap.josm.gui.mappaint.MultiCascade;
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35 | import org.openstreetmap.josm.gui.mappaint.mapcss.Condition;
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36 | import org.openstreetmap.josm.gui.mappaint.mapcss.Expression;
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37 | import org.openstreetmap.josm.gui.mappaint.mapcss.Instruction;
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38 | import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSRule;
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39 | import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSStyleSource;
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40 | import org.openstreetmap.josm.gui.mappaint.mapcss.Selector;
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41 | import org.openstreetmap.josm.gui.mappaint.mapcss.Selector.GeneralSelector;
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42 | import org.openstreetmap.josm.gui.mappaint.mapcss.parsergen.MapCSSParser;
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43 | import org.openstreetmap.josm.gui.mappaint.mapcss.parsergen.ParseException;
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44 | import org.openstreetmap.josm.gui.preferences.validator.ValidatorPreference;
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45 | import org.openstreetmap.josm.gui.preferences.validator.ValidatorTagCheckerRulesPreference;
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46 | import org.openstreetmap.josm.io.MirroredInputStream;
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47 | import org.openstreetmap.josm.io.UTFInputStreamReader;
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48 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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49 | import org.openstreetmap.josm.tools.Predicate;
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50 | import org.openstreetmap.josm.tools.Utils;
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51 |
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52 | /**
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53 | * MapCSS-based tag checker/fixer.
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54 | * @since 6506
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55 | */
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56 | public class MapCSSTagChecker extends Test.TagTest {
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57 |
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58 | /**
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59 | * The preference key for tag checker source entries.
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60 | * @since 6670
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61 | */
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62 | public static final String ENTRIES_PREF_KEY = "validator." + MapCSSTagChecker.class.getName() + ".entries";
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63 |
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64 | /**
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65 | * Constructs a new {@code MapCSSTagChecker}.
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66 | */
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67 | public MapCSSTagChecker() {
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68 | super(tr("Tag checker (MapCSS based)"), tr("This test checks for errors in tag keys and values."));
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69 | }
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70 |
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71 | final List<TagCheck> checks = new ArrayList<TagCheck>();
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72 |
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73 | static class TagCheck implements Predicate<OsmPrimitive> {
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74 | protected final MapCSSRule rule;
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75 | protected final List<PrimitiveToTag> change = new ArrayList<PrimitiveToTag>();
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76 | protected final Map<String, String> keyChange = new LinkedHashMap<String, String>();
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77 | protected final List<String> alternatives = new ArrayList<String>();
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78 | protected final Map<Instruction.AssignmentInstruction, Severity> errors = new HashMap<Instruction.AssignmentInstruction, Severity>();
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79 | protected final Map<String, Boolean> assertions = new HashMap<String, Boolean>();
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80 |
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81 | TagCheck(MapCSSRule rule) {
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82 | this.rule = rule;
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83 | }
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84 |
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85 | /**
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86 | * A function mapping the matched {@link OsmPrimitive} to a {@link Tag}.
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87 | */
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88 | abstract static class PrimitiveToTag implements Utils.Function<OsmPrimitive, Tag> {
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89 |
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90 | private PrimitiveToTag() {
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91 | // Hide implicit public constructor for utility class
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92 | }
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93 |
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94 | /**
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95 | * Creates a new mapping from an {@code MapCSS} object.
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96 | * In case of an {@link Expression}, that is evaluated on the matched {@link OsmPrimitive}.
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97 | * In case of a {@link String}, that is "compiled" to a {@link Tag} instance.
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98 | */
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99 | static PrimitiveToTag ofMapCSSObject(final Object obj, final boolean keyOnly) {
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100 | if (obj instanceof Expression) {
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101 | return new PrimitiveToTag() {
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102 | @Override
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103 | public Tag apply(OsmPrimitive p) {
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104 | final String s = (String) ((Expression) obj).evaluate(new Environment().withPrimitive(p));
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105 | return keyOnly? new Tag(s) : Tag.ofString(s);
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106 | }
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107 | };
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108 | } else if (obj instanceof String) {
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109 | final Tag tag = keyOnly ? new Tag((String) obj) : Tag.ofString((String) obj);
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110 | return new PrimitiveToTag() {
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111 | @Override
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112 | public Tag apply(OsmPrimitive ignore) {
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113 | return tag;
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114 | }
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115 | };
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116 | } else {
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117 | return null;
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118 | }
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119 | }
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120 | }
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121 |
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122 | static TagCheck ofMapCSSRule(final MapCSSRule rule) {
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123 | final TagCheck check = new TagCheck(rule);
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124 | boolean containsSetClassExpression = false;
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125 | for (Instruction i : rule.declaration) {
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126 | if (i instanceof Instruction.AssignmentInstruction) {
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127 | final Instruction.AssignmentInstruction ai = (Instruction.AssignmentInstruction) i;
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128 | if (ai.isSetInstruction) {
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129 | containsSetClassExpression = true;
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130 | continue;
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131 | }
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132 | final String val = ai.val instanceof Expression
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133 | ? (String) ((Expression) ai.val).evaluate(new Environment())
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134 | : ai.val instanceof String
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135 | ? (String) ai.val
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136 | : null;
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137 | if (ai.key.startsWith("throw")) {
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138 | final Severity severity = Severity.valueOf(ai.key.substring("throw".length()).toUpperCase());
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139 | check.errors.put(ai, severity);
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140 | } else if ("fixAdd".equals(ai.key)) {
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141 | final PrimitiveToTag toTag = PrimitiveToTag.ofMapCSSObject(ai.val, false);
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142 | check.change.add(toTag);
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143 | } else if ("fixRemove".equals(ai.key)) {
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144 | CheckParameterUtil.ensureThat(!(ai.val instanceof String) || !val.contains("="), "Unexpected '='. Please only specify the key to remove!");
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145 | final PrimitiveToTag toTag = PrimitiveToTag.ofMapCSSObject(ai.val, true);
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146 | check.change.add(toTag);
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147 | } else if ("fixChangeKey".equals(ai.key) && val != null) {
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148 | CheckParameterUtil.ensureThat(val.contains("=>"), "Separate old from new key by '=>'!");
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149 | final String[] x = val.split("=>", 2);
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150 | check.keyChange.put(Tag.removeWhiteSpaces(x[0]), Tag.removeWhiteSpaces(x[1]));
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151 | } else if ("suggestAlternative".equals(ai.key) && val != null) {
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152 | check.alternatives.add(val);
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153 | } else if ("assertMatch".equals(ai.key) && val != null) {
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154 | check.assertions.put(val, true);
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155 | } else if ("assertNoMatch".equals(ai.key) && val != null) {
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156 | check.assertions.put(val, false);
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157 | } else {
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158 | throw new RuntimeException("Cannot add instruction " + ai.key + ": " + ai.val + "!");
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159 | }
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160 | }
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161 | }
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162 | if (check.errors.isEmpty() && !containsSetClassExpression) {
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163 | throw new RuntimeException("No throwError/throwWarning/throwOther given! You should specify a validation error message for " + rule.selectors);
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164 | } else if (check.errors.size() > 1) {
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165 | throw new RuntimeException("More than one throwError/throwWarning/throwOther given! You should specify a single validation error message for " + rule.selectors);
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166 | }
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167 | return check;
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168 | }
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169 |
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170 | static List<TagCheck> readMapCSS(Reader css) throws ParseException {
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171 | CheckParameterUtil.ensureParameterNotNull(css, "css");
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172 | return readMapCSS(new MapCSSParser(css));
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173 | }
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174 |
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175 | static List<TagCheck> readMapCSS(MapCSSParser css) throws ParseException {
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176 | CheckParameterUtil.ensureParameterNotNull(css, "css");
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177 | final MapCSSStyleSource source = new MapCSSStyleSource("");
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178 | css.sheet(source);
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179 | assert source.getErrors().isEmpty();
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180 | // Ignore "meta" rule(s) from external rules of JOSM wiki
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181 | removeMetaRules(source);
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182 | return new ArrayList<TagCheck>(Utils.transform(source.rules, new Utils.Function<MapCSSRule, TagCheck>() {
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183 | @Override
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184 | public TagCheck apply(MapCSSRule x) {
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185 | return TagCheck.ofMapCSSRule(x);
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186 | }
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187 | }));
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188 | }
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189 |
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190 | private static void removeMetaRules(MapCSSStyleSource source) {
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191 | for (Iterator<MapCSSRule> it = source.rules.iterator(); it.hasNext(); ) {
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192 | MapCSSRule x = it.next();
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193 | if (x.selectors.size() == 1) {
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194 | Selector sel = x.selectors.get(0);
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195 | if (sel instanceof GeneralSelector) {
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196 | GeneralSelector gs = (GeneralSelector) sel;
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197 | if ("meta".equals(gs.base) && gs.getConditions().isEmpty()) {
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198 | it.remove();
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199 | }
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200 | }
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201 | }
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202 | }
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203 | }
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204 |
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205 | @Override
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206 | public boolean evaluate(OsmPrimitive primitive) {
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207 | return matchesPrimitive(primitive);
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208 | }
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209 |
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210 | /**
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211 | * Tests whether the {@link OsmPrimitive} contains a deprecated tag which is represented by this {@code MapCSSTagChecker}.
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212 | *
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213 | * @param primitive the primitive to test
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214 | * @return true when the primitive contains a deprecated tag
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215 | * @deprecated since it does not handle MapCSS-classes
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216 | */
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217 | @Deprecated
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218 | boolean matchesPrimitive(OsmPrimitive primitive) {
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219 | return whichSelectorMatchesPrimitive(primitive) != null;
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220 | }
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221 |
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222 | Selector whichSelectorMatchesPrimitive(OsmPrimitive primitive) {
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223 | return whichSelectorMatchesEnvironment(new Environment().withPrimitive(primitive));
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224 | }
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225 |
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226 | Selector whichSelectorMatchesEnvironment(Environment env) {
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227 | for (Selector i : rule.selectors) {
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228 | env.clearSelectorMatchingInformation();
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229 | if (i.matches(env)) {
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230 | return i;
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231 | }
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232 | }
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233 | return null;
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234 | }
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235 |
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236 | /**
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237 | * Determines the {@code index}-th key/value/tag (depending on {@code type}) of the
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238 | * {@link org.openstreetmap.josm.gui.mappaint.mapcss.Selector.GeneralSelector}.
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239 | */
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240 | static String determineArgument(Selector.GeneralSelector matchingSelector, int index, String type) {
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241 | try {
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242 | final Condition c = matchingSelector.getConditions().get(index);
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243 | final Tag tag = c instanceof Condition.KeyCondition
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244 | ? ((Condition.KeyCondition) c).asTag()
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245 | : c instanceof Condition.KeyValueCondition
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246 | ? ((Condition.KeyValueCondition) c).asTag()
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247 | : null;
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248 | if (tag == null) {
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249 | return null;
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250 | } else if ("key".equals(type)) {
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251 | return tag.getKey();
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252 | } else if ("value".equals(type)) {
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253 | return tag.getValue();
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254 | } else if ("tag".equals(type)) {
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255 | return tag.toString();
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256 | }
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257 | } catch (IndexOutOfBoundsException ignore) {
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258 | Main.debug(ignore.getMessage());
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259 | }
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260 | return null;
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261 | }
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262 |
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263 | /**
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264 | * Replaces occurrences of {@code {i.key}}, {@code {i.value}}, {@code {i.tag}} in {@code s} by the corresponding
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265 | * key/value/tag of the {@code index}-th {@link Condition} of {@code matchingSelector}.
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266 | */
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267 | static String insertArguments(Selector matchingSelector, String s) {
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268 | if (s != null && matchingSelector instanceof Selector.ChildOrParentSelector) {
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269 | return insertArguments(((Selector.ChildOrParentSelector)matchingSelector).right, s);
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270 | } else if (s == null || !(matchingSelector instanceof GeneralSelector)) {
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271 | return s;
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272 | }
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273 | final Matcher m = Pattern.compile("\\{(\\d+)\\.(key|value|tag)\\}").matcher(s);
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274 | final StringBuffer sb = new StringBuffer();
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275 | while (m.find()) {
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276 | final String argument = determineArgument((Selector.GeneralSelector) matchingSelector, Integer.parseInt(m.group(1)), m.group(2));
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277 | try {
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278 | m.appendReplacement(sb, String.valueOf(argument));
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279 | } catch (IndexOutOfBoundsException e) {
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280 | Main.error(tr("Unable to replace argument {0} in {1}: {2}", argument, sb, e.getMessage()));
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281 | }
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282 | }
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283 | m.appendTail(sb);
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284 | return sb.toString();
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285 | }
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286 |
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287 | /**
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288 | * Constructs a fix in terms of a {@link org.openstreetmap.josm.command.Command} for the {@link OsmPrimitive}
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289 | * if the error is fixable, or {@code null} otherwise.
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290 | *
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291 | * @param p the primitive to construct the fix for
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292 | * @return the fix or {@code null}
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293 | */
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294 | Command fixPrimitive(OsmPrimitive p) {
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295 | if (change.isEmpty() && keyChange.isEmpty()) {
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296 | return null;
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297 | }
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298 | final Selector matchingSelector = whichSelectorMatchesPrimitive(p);
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299 | Collection<Command> cmds = new LinkedList<Command>();
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300 | for (PrimitiveToTag toTag : change) {
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301 | final Tag tag = toTag.apply(p);
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302 | final String key = insertArguments(matchingSelector, tag.getKey());
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303 | final String value = insertArguments(matchingSelector, tag.getValue());
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304 | cmds.add(new ChangePropertyCommand(p, key, value));
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305 | }
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306 | for (Map.Entry<String, String> i : keyChange.entrySet()) {
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307 | final String oldKey = insertArguments(matchingSelector, i.getKey());
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308 | final String newKey = insertArguments(matchingSelector, i.getValue());
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309 | cmds.add(new ChangePropertyKeyCommand(p, oldKey, newKey));
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310 | }
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311 | return new SequenceCommand(tr("Fix of {0}", getDescriptionForMatchingSelector(p, matchingSelector)), cmds);
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312 | }
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313 |
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314 | /**
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315 | * Constructs a (localized) message for this deprecation check.
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316 | *
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317 | * @return a message
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318 | */
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319 | String getMessage(OsmPrimitive p) {
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320 | if (errors.isEmpty()) {
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321 | // Return something to avoid NPEs
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322 | return rule.declaration.toString();
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323 | } else {
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324 | final Object val = errors.keySet().iterator().next().val;
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325 | return String.valueOf(
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326 | val instanceof Expression
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327 | ? ((Expression) val).evaluate(new Environment().withPrimitive(p))
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328 | : val
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329 | );
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330 | }
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331 | }
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332 |
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333 | /**
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334 | * Constructs a (localized) description for this deprecation check.
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335 | *
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336 | * @return a description (possibly with alternative suggestions)
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337 | * @see #getDescriptionForMatchingSelector
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338 | */
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339 | String getDescription(OsmPrimitive p) {
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340 | if (alternatives.isEmpty()) {
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341 | return getMessage(p);
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342 | } else {
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343 | /* I18N: {0} is the test error message and {1} is an alternative */
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344 | return tr("{0}, use {1} instead", getMessage(p), Utils.join(tr(" or "), alternatives));
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345 | }
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346 | }
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347 |
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348 | /**
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349 | * Constructs a (localized) description for this deprecation check
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350 | * where any placeholders are replaced by values of the matched selector.
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351 | *
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352 | * @return a description (possibly with alternative suggestions)
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353 | */
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354 | String getDescriptionForMatchingSelector(OsmPrimitive p, Selector matchingSelector) {
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355 | return insertArguments(matchingSelector, getDescription(p));
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356 | }
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357 |
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358 | Severity getSeverity() {
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359 | return errors.isEmpty() ? null : errors.values().iterator().next();
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360 | }
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361 |
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362 | @Override
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363 | public String toString() {
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364 | return getDescription(null);
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365 | }
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366 |
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367 | /**
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368 | * Constructs a {@link TestError} for the given primitive, or returns null if the primitive does not give rise to an error.
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369 | *
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370 | * @param p the primitive to construct the error for
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371 | * @return an instance of {@link TestError}, or returns null if the primitive does not give rise to an error.
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372 | */
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373 | TestError getErrorForPrimitive(OsmPrimitive p) {
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374 | final Environment env = new Environment().withPrimitive(p);
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375 | return getErrorForPrimitive(p, whichSelectorMatchesEnvironment(env), env);
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376 | }
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377 |
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378 | TestError getErrorForPrimitive(OsmPrimitive p, Selector matchingSelector, Environment env) {
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379 | if (matchingSelector != null && !errors.isEmpty()) {
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380 | final Command fix = fixPrimitive(p);
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381 | final String description = getDescriptionForMatchingSelector(p, matchingSelector);
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382 | final List<OsmPrimitive> primitives;
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383 | if (env.child != null) {
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384 | primitives = Arrays.asList(p, env.child);
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385 | } else {
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386 | primitives = Collections.singletonList(p);
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387 | }
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388 | if (fix != null) {
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389 | return new FixableTestError(null, getSeverity(), description, null, matchingSelector.toString(), 3000, primitives, fix);
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390 | } else {
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391 | return new TestError(null, getSeverity(), description, null, matchingSelector.toString(), 3000, primitives);
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392 | }
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393 | } else {
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394 | return null;
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395 | }
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396 | }
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397 | }
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398 |
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399 | static class MapCSSTagCheckerAndRule extends MapCSSTagChecker {
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400 | public final MapCSSRule rule;
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401 |
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402 | MapCSSTagCheckerAndRule(MapCSSRule rule) {
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403 | this.rule = rule;
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404 | }
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405 |
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406 | @Override
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407 | public boolean equals(Object obj) {
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408 | return super.equals(obj)
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409 | || (obj instanceof TagCheck && rule.equals(((TagCheck) obj).rule))
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410 | || (obj instanceof MapCSSRule && rule.equals(obj));
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411 | }
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412 | }
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413 |
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414 | /**
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415 | * Obtains all {@link TestError}s for the {@link OsmPrimitive} {@code p}.
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416 | */
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417 | public Collection<TestError> getErrorsForPrimitive(OsmPrimitive p, boolean includeOtherSeverity) {
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418 | final ArrayList<TestError> r = new ArrayList<TestError>();
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419 | final Environment env = new Environment(p, new MultiCascade(), Environment.DEFAULT_LAYER, null);
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420 | for (TagCheck check : checks) {
|
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421 | if (Severity.OTHER.equals(check.getSeverity()) && !includeOtherSeverity) {
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422 | continue;
|
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423 | }
|
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424 | final Selector selector = check.whichSelectorMatchesEnvironment(env);
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425 | if (selector != null) {
|
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426 | check.rule.execute(env);
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427 | final TestError error = check.getErrorForPrimitive(p, selector, env);
|
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428 | if (error != null) {
|
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429 | error.setTester(new MapCSSTagCheckerAndRule(check.rule));
|
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430 | r.add(error);
|
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431 | }
|
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432 | }
|
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433 | }
|
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434 | return r;
|
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435 | }
|
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436 |
|
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437 | /**
|
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438 | * Visiting call for primitives.
|
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439 | *
|
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440 | * @param p The primitive to inspect.
|
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441 | */
|
---|
442 | @Override
|
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443 | public void check(OsmPrimitive p) {
|
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444 | errors.addAll(getErrorsForPrimitive(p, ValidatorPreference.PREF_OTHER.get()));
|
---|
445 | }
|
---|
446 |
|
---|
447 | /**
|
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448 | * Adds a new MapCSS config file from the given {@code Reader}.
|
---|
449 | * @param css The reader
|
---|
450 | * @throws ParseException if the config file does not match MapCSS syntax
|
---|
451 | */
|
---|
452 | public void addMapCSS(Reader css) throws ParseException {
|
---|
453 | checks.addAll(TagCheck.readMapCSS(css));
|
---|
454 | }
|
---|
455 |
|
---|
456 | @Override
|
---|
457 | public synchronized void initialize() throws Exception {
|
---|
458 | checks.clear();
|
---|
459 | for (String i : new ValidatorTagCheckerRulesPreference.RulePrefHelper().getActiveUrls()) {
|
---|
460 | try {
|
---|
461 | if (i.startsWith("resource:")) {
|
---|
462 | Main.debug(tr("Adding {0} to tag checker", i));
|
---|
463 | } else {
|
---|
464 | Main.info(tr("Adding {0} to tag checker", i));
|
---|
465 | }
|
---|
466 | MirroredInputStream s = new MirroredInputStream(i);
|
---|
467 | try {
|
---|
468 | addMapCSS(new BufferedReader(UTFInputStreamReader.create(s)));
|
---|
469 | } finally {
|
---|
470 | Utils.close(s);
|
---|
471 | }
|
---|
472 | } catch (IOException ex) {
|
---|
473 | Main.warn(tr("Failed to add {0} to tag checker", i));
|
---|
474 | Main.warn(ex, false);
|
---|
475 | } catch (Exception ex) {
|
---|
476 | Main.warn(tr("Failed to add {0} to tag checker", i));
|
---|
477 | Main.warn(ex);
|
---|
478 | }
|
---|
479 | }
|
---|
480 | }
|
---|
481 | }
|
---|