[61] | 1 | /*
|
---|
| 2 | * generated by Xtext
|
---|
| 3 | */
|
---|
| 4 | package de.ugoe.cs.swe.bnftools.validation
|
---|
| 5 |
|
---|
| 6 | import de.ugoe.cs.swe.bnftools.ebnf.EbnfPackage
|
---|
| 7 | import java.util.List
|
---|
| 8 | import org.eclipse.xtext.validation.Check
|
---|
| 9 | import de.ugoe.cs.swe.bnftools.ebnf.Rule
|
---|
| 10 | import org.eclipse.xtext.nodemodel.util.NodeModelUtils
|
---|
| 11 | import org.eclipse.xtext.nodemodel.ICompositeNode
|
---|
| 12 | import de.ugoe.cs.swe.bnftools.ebnf.EtsiBnf
|
---|
| 13 | import de.ugoe.cs.swe.bnftools.ebnf.RuleReference
|
---|
| 14 | import de.ugoe.cs.swe.bnftools.ebnf.DefinitionList
|
---|
| 15 | import de.ugoe.cs.swe.bnftools.ebnf.SingleDefinition
|
---|
[66] | 16 | import com.google.inject.Inject
|
---|
| 17 | import org.eclipse.xtext.resource.IResourceDescriptions
|
---|
[65] | 18 |
|
---|
[61] | 19 | //import java.util.HashMap
|
---|
| 20 | //import java.util.Set
|
---|
| 21 | //import java.util.HashSet
|
---|
| 22 | //import org.eclipse.xtext.validation.Check
|
---|
| 23 | /**
|
---|
| 24 | * Custom validation rules.
|
---|
| 25 | *
|
---|
| 26 | * see http://www.eclipse.org/Xtext/documentation.html#validation
|
---|
| 27 | */
|
---|
| 28 | class EbnfValidator extends AbstractEbnfValidator {
|
---|
| 29 |
|
---|
[66] | 30 |
|
---|
| 31 | @Inject
|
---|
| 32 | IResourceDescriptions resourceDescriptions;
|
---|
| 33 |
|
---|
| 34 |
|
---|
[63] | 35 | public static final String ruleReferencedOneDescription = "The rule is only referenced by one other rule";
|
---|
| 36 | public static final String passthroughRuleDescription = "The rule is a passthrough rule";
|
---|
| 37 | public static final String unreferencedPassthroughRuleDescription = "The rule is an unreferenced passthrough rule";
|
---|
| 38 | public static final String unusedRuleDescription = "The rule is not referenced anywhere";
|
---|
| 39 | public static final String equalAlternativeDescription = "The rule contains equal alternatives";
|
---|
| 40 | public static final String duplicateRulesDescription = "The rule is a duplicate";
|
---|
[65] | 41 |
|
---|
[63] | 42 | //public static final String duplicateSubRulesDescription = "A part the of rule is a duplicate";
|
---|
| 43 | public static final String nonUniqueNameDescription = "The rule has the same Name as the Rule in Line ";
|
---|
[102] | 44 | public static final String wrongNumbering = "The rule numbering is wrong in Line ";
|
---|
[61] | 45 |
|
---|
| 46 | // ----------------------------------------------------------------------------------------------------
|
---|
| 47 | /* Checks if a rule is only referenced by one other Rule, e.g.:
|
---|
| 48 | * a ::= b
|
---|
| 49 | * b ::= "foo"
|
---|
| 50 | */
|
---|
| 51 | @Check
|
---|
| 52 | def void checkReferencedOnlyOnce(Rule rule) {
|
---|
| 53 |
|
---|
| 54 | if (EbnfAnalysisUtils.isTokenRule(rule))
|
---|
| 55 | return;
|
---|
| 56 |
|
---|
[66] | 57 | var List<Rule> references = EbnfAnalysisUtils.findReferences(rule,resourceDescriptions);
|
---|
| 58 | var List<RuleReference> references1 = EbnfAnalysisUtils.findReferences(rule);
|
---|
| 59 | if (references.size+references1.size == 1 && rule.rulenumber != 1) {
|
---|
[65] | 60 | warning(ruleReferencedOneDescription, EbnfPackage$Literals::RULE__NAME, ruleReferencedOneDescription,
|
---|
| 61 | rule.name);
|
---|
[61] | 62 | }
|
---|
| 63 | }
|
---|
| 64 |
|
---|
| 65 | // ----------------------------------------------------------------------------------------------------
|
---|
| 66 | /*Checks if a a rule has the same definition as another rule e.g.:
|
---|
| 67 | * a ::= "test"
|
---|
| 68 | * b ::= "test"
|
---|
| 69 | * (Problem: does not check if there is a permutation)
|
---|
| 70 | */
|
---|
| 71 | @Check
|
---|
| 72 | def void checkDuplicateRules(Rule rule) {
|
---|
| 73 |
|
---|
| 74 | //load bnf
|
---|
| 75 | var EtsiBnf etsiBnf = rule.eContainer().eContainer() as EtsiBnf;
|
---|
| 76 |
|
---|
| 77 | // find the rule in the parsetree
|
---|
| 78 | var ICompositeNode definitionList = NodeModelUtils.findActualNodeFor(rule.getDefinitionList());
|
---|
| 79 |
|
---|
| 80 | //get the definitionList as formatted string
|
---|
| 81 | var String rightHandSideText = definitionList.text.trim().replaceAll("[ \t\n\r]", "");
|
---|
| 82 |
|
---|
| 83 | //get All Rules
|
---|
| 84 | var List<Rule> allRules = EbnfAnalysisUtils.getAllRules(etsiBnf);
|
---|
| 85 |
|
---|
| 86 | // run through all Rules
|
---|
[65] | 87 | for (currentRule : allRules) {
|
---|
| 88 | if (currentRule != rule) {
|
---|
| 89 | var ICompositeNode currentRuleDefinitionList = NodeModelUtils.findActualNodeFor(
|
---|
| 90 | currentRule.getDefinitionList());
|
---|
| 91 | var String currentRuleRightHandSideText = currentRuleDefinitionList.text.trim().replaceAll("[ \t\n\r]",
|
---|
| 92 | "");
|
---|
| 93 |
|
---|
| 94 | if (currentRuleRightHandSideText.equals(rightHandSideText)) {
|
---|
| 95 | var String description = duplicateRulesDescription + " with rule \"" + currentRule.getName() +
|
---|
| 96 | "\" (Line " + NodeModelUtils.findActualNodeFor(currentRule).getStartLine() + ")";
|
---|
| 97 | warning(description, EbnfPackage$Literals::RULE__NAME);
|
---|
| 98 | }
|
---|
| 99 | }
|
---|
| 100 | }
|
---|
| 101 |
|
---|
| 102 | // //get all Single Definitions as Trimmed Strings
|
---|
| 103 | // var List<String> singleDefsAsString = new ArrayList<String>();
|
---|
| 104 | //
|
---|
| 105 | // for (SingleDefinition s : (rule.definitionList).singleDefinition) {
|
---|
| 106 | // singleDefsAsString.add(NodeModelUtils.findActualNodeFor(s).text.trim().replaceAll("[ \t\n\r]", ""));
|
---|
| 107 | // }
|
---|
| 108 | //
|
---|
| 109 | // // for every rule get the single definitions as Strings
|
---|
| 110 | // var int j = 0;
|
---|
| 111 | // while (j<allRules.size) {
|
---|
| 112 | // var currentRule=allRules.get(j);
|
---|
| 113 | // if (currentRule != rule) {
|
---|
| 114 | // var List<String> singleDefsAsString1 = new ArrayList<String>();
|
---|
| 115 | //
|
---|
| 116 | // for (SingleDefinition s : ( currentRule.definitionList).singleDefinition) {
|
---|
| 117 | // singleDefsAsString1.add(NodeModelUtils.findActualNodeFor(s).text.trim().replaceAll("[ \t\n\r]", ""));
|
---|
| 118 | // }
|
---|
| 119 | //
|
---|
| 120 | // //for every String SingleDefinition find a corresponding ind the current rule
|
---|
| 121 | // if (singleDefsAsString.size == singleDefsAsString1.size) {
|
---|
| 122 | // var List<String> singleDefsAsStringCpy = singleDefsAsString.clone;
|
---|
| 123 | // var boolean equal = true;
|
---|
| 124 | // while (equal) {
|
---|
| 125 | // var String momentaryString = singleDefsAsStringCpy.get(0);
|
---|
| 126 | // var int i = 0;
|
---|
| 127 | // var boolean found = false;
|
---|
| 128 | // while (i < singleDefsAsString1.size && !found) {
|
---|
| 129 | // if (singleDefsAsString1.get(i).equals(momentaryString)) {
|
---|
| 130 | // singleDefsAsStringCpy.remove(0);
|
---|
| 131 | // singleDefsAsString1.remove(i);
|
---|
| 132 | // found = true
|
---|
| 133 | // }
|
---|
| 134 | // i++;
|
---|
| 135 | // }
|
---|
| 136 | // if (!found) {
|
---|
| 137 | // equal = false;
|
---|
| 138 | // }
|
---|
| 139 | // if (singleDefsAsStringCpy.empty) {
|
---|
| 140 | // var String description = duplicateRulesDescription + " with rule \"" + currentRule.getName() +
|
---|
| 141 | // "\" (Line " + NodeModelUtils.findActualNodeFor(currentRule).getStartLine() + ")";
|
---|
| 142 | // warning(description, EbnfPackage$Literals::RULE__NAME)
|
---|
| 143 | // }
|
---|
| 144 | // }
|
---|
| 145 | // }
|
---|
| 146 | //
|
---|
| 147 | // }
|
---|
| 148 | // j++;
|
---|
| 149 | // }
|
---|
[61] | 150 | }
|
---|
| 151 |
|
---|
| 152 | // ----------------------------------------------------------------------------------------------------
|
---|
| 153 | /*Checks if a Rule got the same Name as another Rule, e.g.:
|
---|
| 154 | * a ::= "foo"
|
---|
| 155 | * a ::= "bar"
|
---|
| 156 | */
|
---|
| 157 | @Check
|
---|
| 158 | def void checkNameIsUnique(Rule rule) {
|
---|
| 159 | val EtsiBnf bnf = rule.eContainer.eContainer as EtsiBnf;
|
---|
| 160 | for (r : EbnfAnalysisUtils.getAllRules(bnf)) {
|
---|
| 161 | if (rule.name.equals(r.name)) {
|
---|
| 162 | if (!r.equals(rule)) {
|
---|
| 163 | error(nonUniqueNameDescription + NodeModelUtils.findActualNodeFor(r).startLine,
|
---|
| 164 | EbnfPackage$Literals::RULE__NAME)
|
---|
| 165 |
|
---|
| 166 | }
|
---|
| 167 | }
|
---|
| 168 | }
|
---|
| 169 | }
|
---|
| 170 |
|
---|
| 171 | // ----------------------------------------------------------------------------------------------------
|
---|
[102] | 172 | /*Checks if the rule numbering is correct:
|
---|
| 173 | * 1. a ::= "foo"
|
---|
| 174 | * 3. b ::= "bar"
|
---|
| 175 | */
|
---|
| 176 | @Check
|
---|
| 177 | def void checkRuleNumbering(Rule rule) {
|
---|
| 178 | val EtsiBnf bnf = rule.eContainer.eContainer as EtsiBnf;
|
---|
| 179 | if (EbnfAnalysisUtils.getAllRules(bnf).indexOf(rule)+1 != rule.rulenumber) {
|
---|
| 180 | warning(wrongNumbering + NodeModelUtils.findActualNodeFor(rule).startLine,
|
---|
| 181 | EbnfPackage$Literals::RULE__RULENUMBER)
|
---|
| 182 | }
|
---|
| 183 | }
|
---|
| 184 |
|
---|
| 185 | //alternative implementation, does not work for some reason
|
---|
| 186 | @Check
|
---|
| 187 | def void checkRuleNumberingG(EtsiBnf bnf) {
|
---|
| 188 | // var lastNumber = 0;
|
---|
| 189 | // for (r : EbnfAnalysisUtils.getAllRules(bnf)) {
|
---|
| 190 | // println(lastNumber + " : " + r.rulenumber)
|
---|
| 191 | // if (lastNumber!=0 && r.rulenumber != lastNumber+1) {
|
---|
| 192 | // warning(wrongNumbering + NodeModelUtils.findActualNodeFor(r).startLine,
|
---|
| 193 | // EbnfPackage$Literals::RULE__RULENUMBER)
|
---|
| 194 | // }
|
---|
| 195 | // lastNumber = r.rulenumber
|
---|
| 196 | // }
|
---|
| 197 | }
|
---|
| 198 |
|
---|
| 199 |
|
---|
| 200 | // ----------------------------------------------------------------------------------------------------
|
---|
[61] | 201 | /*Checks if a Rule, except for the #1 is not referenced, e.g.:
|
---|
| 202 | * a::= b
|
---|
| 203 | * b::="foo"
|
---|
| 204 | * c ::= "bar"
|
---|
| 205 | */
|
---|
| 206 | @Check
|
---|
| 207 | def void checkUnusedRule(Rule rule) {
|
---|
| 208 |
|
---|
| 209 | var List<RuleReference> references = EbnfAnalysisUtils.findReferences(rule);
|
---|
[66] | 210 | var List<Rule> references1 = EbnfAnalysisUtils.findReferences(rule,resourceDescriptions);
|
---|
| 211 | if ((references.size+references1.size == 0) && (rule.getRulenumber() != 1))
|
---|
[65] | 212 | warning(unusedRuleDescription, EbnfPackage$Literals::RULE__NAME, unusedRuleDescription, rule.name);
|
---|
[61] | 213 | }
|
---|
| 214 |
|
---|
| 215 | // ----------------------------------------------------------------------------------------------------
|
---|
| 216 | /*Checks if a rule got two equal alternatives, e.g.:
|
---|
| 217 | * a ::= b | "foo" | b
|
---|
| 218 | *(Problem:ignores whitespaces in literals)
|
---|
| 219 | */
|
---|
| 220 | @Check
|
---|
| 221 | def void checkEqualAlternative(Rule rule) {
|
---|
| 222 |
|
---|
| 223 | var DefinitionList definitionList = rule.definitionList;
|
---|
| 224 |
|
---|
| 225 | var List<SingleDefinition> singleDefinitions = definitionList.singleDefinition;
|
---|
| 226 |
|
---|
| 227 | for (sDef1 : singleDefinitions) {
|
---|
| 228 | for (sDef2 : singleDefinitions) {
|
---|
| 229 | if (!sDef1.equals(sDef2)) {
|
---|
| 230 | var String d1 = NodeModelUtils.findActualNodeFor(sDef1).text.trim.replaceAll("[ \t\n\r]", "");
|
---|
| 231 | var String d2 = NodeModelUtils.findActualNodeFor(sDef2).text.trim.replaceAll("[ \t\n\r]", "");
|
---|
| 232 |
|
---|
| 233 | if (d1.equals(d2))
|
---|
[65] | 234 | warning(equalAlternativeDescription, EbnfPackage$Literals::RULE__NAME,
|
---|
| 235 | equalAlternativeDescription, rule.name);
|
---|
[61] | 236 | }
|
---|
| 237 | }
|
---|
| 238 | }
|
---|
| 239 |
|
---|
| 240 | }
|
---|
| 241 |
|
---|
| 242 | // ----------------------------------------------------------------------------------------------------
|
---|
| 243 | /* Checks if a rule gets just passed through, e.g.:
|
---|
| 244 | * a ::= b | "literal"
|
---|
| 245 | * b ::= c
|
---|
| 246 | * c ::= "foo.bar"
|
---|
| 247 | */
|
---|
| 248 | @Check
|
---|
| 249 | def void checkPassthroughRule(Rule rule) {
|
---|
| 250 |
|
---|
| 251 | var List<RuleReference> references = EbnfAnalysisUtils.findReferences(rule);
|
---|
[66] | 252 | var List<Rule> references1 = EbnfAnalysisUtils.findReferences(rule,resourceDescriptions);
|
---|
[65] | 253 | if (EbnfAnalysisUtils.isPassthroughRule(rule) && rule.rulenumber != 1) {
|
---|
[66] | 254 | if (references.size+references1.size == 0) {
|
---|
[61] | 255 | warning(unreferencedPassthroughRuleDescription, EbnfPackage$Literals::RULE__NAME);
|
---|
| 256 | } else {
|
---|
[65] | 257 | warning(passthroughRuleDescription, EbnfPackage$Literals::RULE__NAME, passthroughRuleDescription,
|
---|
| 258 | rule.name);
|
---|
[61] | 259 | }
|
---|
| 260 | }
|
---|
| 261 | }
|
---|
| 262 |
|
---|
[65] | 263 | // ----------------------------------------------------------------------------------------------------
|
---|
| 264 | /* Checks if a subrule is used more then once, e.g.:
|
---|
[61] | 265 | * a ::= (a b) e
|
---|
| 266 | * b ::= (a b) d
|
---|
| 267 | * _____
|
---|
| 268 | * (Not working, under construction)
|
---|
| 269 | */
|
---|
| 270 | // @Check
|
---|
| 271 | // def void checkSubruleDuplicates(EtsiBnf bnf){
|
---|
| 272 | // var HashMap<String, DuplicateEntry> dupesMap = new HashMap<String, DuplicateEntry>();
|
---|
| 273 | // var Set<String> taggedEntries = new HashSet<String>();
|
---|
| 274 | //
|
---|
| 275 | // var List<Rule> allRules = EbnfAnalysisUtils.getAllRules(bnf);
|
---|
| 276 | //
|
---|
| 277 | // for(rule: allRules){
|
---|
| 278 | // var List<SingleDefinition> subrules = rule.definitionList.singleDefinition
|
---|
| 279 | // for(subrule:subrules){
|
---|
| 280 | // var String subruleText = NodeModelUtils.findActualNodeFor(subrule).text.trim.replaceAll("[ \t\n\r]", "");
|
---|
| 281 | //
|
---|
| 282 | // }
|
---|
| 283 | // }
|
---|
| 284 | // }
|
---|
| 285 | }
|
---|