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package hu.bme.mit.inf.dslreasoner.viatra2logic
import hu.bme.mit.inf.dslreasoner.ecore2logic.Ecore2Logic
import hu.bme.mit.inf.dslreasoner.ecore2logic.Ecore2Logic_Trace
import hu.bme.mit.inf.dslreasoner.logic.model.builder.LogicProblemBuilder
import hu.bme.mit.inf.dslreasoner.logic.model.builder.TracedOutput
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.RelationDefinition
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.Variable
import hu.bme.mit.inf.dslreasoner.logic.model.logicproblem.LogicProblem
import hu.bme.mit.inf.dslreasoner.viatra2logic.viatra2logicannotations.TransfomedViatraQuery
import hu.bme.mit.inf.dslreasoner.viatra2logic.viatra2logicannotations.Viatra2LogicAnnotationsFactory
import java.util.ArrayList
import java.util.HashMap
import java.util.LinkedList
import java.util.List
import java.util.Map
import java.util.Set
import org.eclipse.emf.ecore.EAttribute
import org.eclipse.emf.ecore.EReference
import org.eclipse.emf.ecore.EStructuralFeature
import org.eclipse.emf.ecore.util.EcoreUtil
import org.eclipse.viatra.query.runtime.api.IQuerySpecification
import org.eclipse.viatra.query.runtime.emf.EMFQueryMetaContext
import org.eclipse.viatra.query.runtime.matchers.psystem.PBody
import org.eclipse.viatra.query.runtime.matchers.psystem.PConstraint
import org.eclipse.viatra.query.runtime.matchers.psystem.PVariable
import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.AggregatorConstraint
import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.NegativePatternCall
import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.PatternMatchCounter
import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PDisjunction
import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PParameter
import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PQuery
import org.eclipse.viatra.query.runtime.matchers.psystem.rewriters.PBodyNormalizer
import org.eclipse.xtend.lib.annotations.Data
import static extension hu.bme.mit.inf.dslreasoner.util.CollectionsUtil.*
@Data class ViatraQuerySetDescriptor {
val List<? extends IQuerySpecification<?>> patterns
val Set<? extends IQuerySpecification<?>> validationPatterns
val Map<IQuerySpecification<?>,EStructuralFeature> derivedFeatures
}
class Viatra2LogicTrace {
public val Map<PQuery, PDisjunction> query2Disjunction = new HashMap
public val Map<PQuery, RelationDefinition> query2Relation = new HashMap
public val Map<PQuery, TransfomedViatraQuery> query2Annotation = new HashMap
public val Map<Pair<PQuery,PParameter>, Variable> parameter2Variable = new HashMap
}
class Viatra2LogicConfiguration {
public var normalize = true
}
class Viatra2Logic {
val extension LogicProblemBuilder builder = new LogicProblemBuilder
val extension Viatra2LogicAnnotationsFactory factory = Viatra2LogicAnnotationsFactory.eINSTANCE
val normalizer = new PBodyNormalizer(EMFQueryMetaContext.DEFAULT)
val Viatra2LogicTypeInferer typeInferer
val Ecore2Logic ecore2Logic
Constraint2Logic constraint2Logic
new(Ecore2Logic ecore2Logic) {
this.ecore2Logic = ecore2Logic
this.typeInferer = new Viatra2LogicTypeInferer(ecore2Logic)
this.constraint2Logic = new Constraint2Logic(ecore2Logic)
}
def TracedOutput<LogicProblem,Viatra2LogicTrace> transformQueries(
ViatraQuerySetDescriptor queries,
TracedOutput<LogicProblem, Ecore2Logic_Trace> ecore2LogicTrace,
Viatra2LogicConfiguration config)
{
// Create trace
val viatra2LogicTrace = new Viatra2LogicTrace
// Translation works on PQueries. QuerySpecification -> PQuery.
val pQueries = queries.patterns.map[it.internalQueryRepresentation]
// If requested, the queries are normalized
for(query: pQueries) {
val disjunction = normalizer.rewrite(query)
viatra2LogicTrace.query2Disjunction.put(query,disjunction)
}
// The types are calculated
val types = typeInferer.inferTypes(pQueries,ecore2LogicTrace,viatra2LogicTrace)
// First, the signature of the queries are translated, ...
for(query: pQueries) {
try {
this.transformQueryHeader(query,types,ecore2LogicTrace,viatra2LogicTrace,config)
} catch(IllegalArgumentException e) {
throw new IllegalArgumentException('''
Unable to translate query "«query.fullyQualifiedName»".
Reason: «e.class.simpleName», «e.message»''',e)
}
}
// ...then the bodies, ...
for(query: pQueries) {
try {
this.transformQuerySpecification(query,types,ecore2LogicTrace,viatra2LogicTrace,config)
} catch (IllegalArgumentException e){
throw new IllegalArgumentException('''
Unable to translate query "«query.fullyQualifiedName»".
Reason: «e.class.simpleName», «e.message»''',e)
}
}
// ... and finally, the annotations.
transformQueryConstraints(
queries.validationPatterns.map[internalQueryRepresentation],
queries.derivedFeatures,
ecore2LogicTrace,viatra2LogicTrace)
return new TracedOutput(ecore2LogicTrace.output,viatra2LogicTrace)
}
def protected transformQueryHeader(
PQuery pquery,
Viatra2LogicTypeResult types,
TracedOutput<LogicProblem, Ecore2Logic_Trace> ecore2LogicTrace,
Viatra2LogicTrace viatra2LogicTrace,
Viatra2LogicConfiguration config)
{
val relationName = '''pattern «pquery.fullyQualifiedName.replace('.',' ')»'''
val parameters = new ArrayList<Variable>(pquery.parameters.size)
for(vParam: pquery.parameters) {
val parameterName = '''parameter «vParam.name»'''
val parameterType = types.getType(pquery,vParam)
if(parameterType === null) {
throw new AssertionError('''null type for parameter «vParam.name» in pattern «pquery.fullyQualifiedName»''')
}
val lParam = createVar(parameterName,parameterType)
viatra2LogicTrace.parameter2Variable.put(pquery->vParam,lParam)
parameters+=lParam
}
val lRelation = RelationDefinition(relationName,parameters,null)
viatra2LogicTrace.query2Relation.put(pquery,lRelation);
ecore2LogicTrace.output.relations += lRelation
val annotation = createTransfomedViatraQuery => [
it.target = lRelation
it.patternFullyQualifiedName = pquery.fullyQualifiedName
it.patternPQuery = pquery
]
viatra2LogicTrace.query2Annotation.put(pquery,annotation)
ecore2LogicTrace.output.annotations += annotation
return lRelation
}
def protected transformQuerySpecification(
PQuery pquery,
Viatra2LogicTypeResult types,
TracedOutput<LogicProblem, Ecore2Logic_Trace> ecore2LogicTrace,
Viatra2LogicTrace viatra2LogicTrace,
Viatra2LogicConfiguration config)
{
val disjunction = pquery.lookup(viatra2LogicTrace.query2Disjunction)
val translatedBodies = new ArrayList(disjunction.bodies.size)
for(body : disjunction.bodies) {
translatedBodies+=body.transformBody(types,ecore2LogicTrace,viatra2LogicTrace,config)
}
val relation = pquery.lookup(viatra2LogicTrace.query2Relation)
relation.value = Or(translatedBodies)
}
def transformQueryConstraints(
Iterable<PQuery> validationPatterns,
Map<IQuerySpecification<?>,EStructuralFeature> derivedFeatures,
TracedOutput<LogicProblem, Ecore2Logic_Trace> ecore2LogicTrace,
Viatra2LogicTrace viatra2LogicTrace)
{
for(pquery : validationPatterns) {
val targetRelation = pquery.lookup(viatra2LogicTrace.query2Relation)
val constraint = Assertion('''errorpattern «pquery.fullyQualifiedName.replace('.',' ')»''',
Forall[
for(param: targetRelation.parameters) {
addVar('''p«targetRelation.parameters.indexOf(param)»''',
EcoreUtil::copy(param))
}
Not(targetRelation.call(it.variables))
]
)
val annotation = createTransformedViatraWellformednessConstraint => [
it.query = pquery.lookup(viatra2LogicTrace.query2Annotation)
it.target = constraint
]
ecore2LogicTrace.output.add(constraint)
ecore2LogicTrace.output.annotations.add(annotation)
}
for(derivedFeature : derivedFeatures.entrySet) {
val relationDefinition = derivedFeature.key.internalQueryRepresentation.lookup(viatra2LogicTrace.query2Relation)
val feature = derivedFeature.value
if(feature instanceof EAttribute) {
val declaration = ecore2Logic.relationOfAttribute(ecore2LogicTrace.trace,feature)
relationDefinition.defines = declaration
} else if(feature instanceof EReference) {
val declaration = ecore2Logic.relationOfReference(ecore2LogicTrace.trace,feature)
relationDefinition.defines = declaration
} else throw new IllegalArgumentException('''Unknown feature: «feature»''')
val annotation = createDefinedByDerivedFeature => [
it.target = relationDefinition.defines
it.query = derivedFeature.key.internalQueryRepresentation.lookup(viatra2LogicTrace.query2Annotation)
]
ecore2LogicTrace.output.annotations+=annotation
}
}
def transformBody(PBody body,
Viatra2LogicTypeResult types,
TracedOutput<LogicProblem, Ecore2Logic_Trace> ecore2LogicTrace,
Viatra2LogicTrace viatra2LogicTrace,
Viatra2LogicConfiguration config)
{
val variable2Variable = new HashMap
// Parameter variables
for(parameter : body.symbolicParameters) {
val param = parameter.patternParameter
val variable = parameter.parameterVariable
variable2Variable.put(variable,(body.pattern->param).lookup(viatra2LogicTrace.parameter2Variable))
}
// Inner Variables
val innerPositiveVariables = new LinkedList
val innerNegativeVariables = new LinkedList
val innerAggreatedVariables = new LinkedList
//println(body.uniqueVariables)
for(innerVariable : body.uniqueVariables) {
if(!variable2Variable.containsKey(innerVariable)) {
if(innerVariable.aggregateOnly) {
// do not create variable
innerAggreatedVariables.add(innerVariable)
variable2Variable.put(innerVariable,null)
} else {
val name = '''variable «innerVariable.name.normalizeName»'''
val logicType = types.getType(body,innerVariable)
if(logicType === null) {
throw new IllegalArgumentException('''Variable «innerVariable.name.normalizeName» has no type!''')
}
val logicVariable = createVar(name,logicType)
if(innerVariable.negativeOnly) {
innerNegativeVariables += logicVariable
} else {
innerPositiveVariables += logicVariable
}
variable2Variable.put(innerVariable,logicVariable)
}
}
}
val translatedConstraints = body.constraints.map[
constraint2Logic.transformConstraint(it,
ecore2LogicTrace,viatra2LogicTrace,variable2Variable,config)
].filterNull
val allConstraintIsSatisfied = And(translatedConstraints)
val allNegativeVariablesAreSatisfied = if(innerNegativeVariables.empty) {
allConstraintIsSatisfied
} else {
Forall(innerNegativeVariables,allConstraintIsSatisfied);
}
val allVariablesAreExisting = if(innerPositiveVariables.empty) {
allNegativeVariablesAreSatisfied
} else {
Exists(innerPositiveVariables,allNegativeVariablesAreSatisfied);
}
return allVariablesAreExisting
}
def private normalizeName(String variableName) {
return variableName.replaceAll("[\\W]|_", "")
}
def isNegativeOnly(PVariable variable) {
if(variable.referringConstraints.size == 1) {
val PConstraint onlyConstraint = variable.referringConstraints.head
if(onlyConstraint instanceof NegativePatternCall) {
return true
} else {
return false
}
} else {
return false
}
}
def isAggregateOnly(PVariable variable) {
if(variable.referringConstraints.size == 1) {
val PConstraint onlyConstraint = variable.referringConstraints.head
if(onlyConstraint instanceof AggregatorConstraint) {
return true
} else if(onlyConstraint instanceof PatternMatchCounter) {
return true
} else {
return false
}
} else {
return false
}
}
}
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