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package hu.bme.mit.inf.dslreasoner.viatrasolver.logic2viatra.cardinality
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.PartialComplexTypeInterpretation
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.PartialInterpretation
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.PartialTypeInterpratation
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.Scope
import java.util.HashMap
import java.util.HashSet
import java.util.Map
import java.util.Set
import org.eclipse.xtend.lib.annotations.Accessors
enum ScopePropagatorStrategy {
BasicTypeHierarchy,
PolyhedralTypeHierarchy
}
class ScopePropagator {
@Accessors(PROTECTED_GETTER) PartialInterpretation partialInterpretation
Map<PartialTypeInterpratation, Scope> type2Scope
val Map<Scope, Set<Scope>> superScopes
val Map<Scope, Set<Scope>> subScopes
new(PartialInterpretation p) {
partialInterpretation = p
type2Scope = new HashMap
for (scope : p.scopes) {
type2Scope.put(scope.targetTypeInterpretation, scope)
}
superScopes = new HashMap
subScopes = new HashMap
for (scope : p.scopes) {
superScopes.put(scope, new HashSet)
subScopes.put(scope, new HashSet)
}
for (scope : p.scopes) {
val target = scope.targetTypeInterpretation
if (target instanceof PartialComplexTypeInterpretation) {
val supertypeInterpretations = target.supertypeInterpretation
for (supertypeInterpretation : supertypeInterpretations) {
val supertypeScope = type2Scope.get(supertypeInterpretation)
superScopes.get(scope).add(supertypeScope)
subScopes.get(supertypeScope).add(scope)
}
}
}
var boolean changed
do {
changed = false
for (scope : p.scopes) {
val subScopeSet = subScopes.get(scope)
val superScopeSet = superScopes.get(scope)
for (subScope : subScopeSet) {
changed = changed || superScopes.get(subScope).addAll(superScopeSet)
}
for (superScope : superScopeSet) {
changed = changed || subScopes.get(superScope).addAll(subScopeSet)
}
}
} while (changed)
}
def propagateAllScopeConstraints() {
var boolean hadChanged
do {
hadChanged = false
for (superScopeEntry : superScopes.entrySet) {
val sub = superScopeEntry.key
hadChanged = propagateLowerLimitUp(sub, partialInterpretation) || hadChanged
hadChanged = propagateUpperLimitDown(sub, partialInterpretation) || hadChanged
for (sup : superScopeEntry.value) {
hadChanged = propagateLowerLimitUp(sub, sup) || hadChanged
hadChanged = propagateUpperLimitDown(sub, sup) || hadChanged
}
}
} while (hadChanged)
}
def propagateAdditionToType(PartialTypeInterpratation t) {
// println('''Adding to «(t as PartialComplexTypeInterpretation).interpretationOf.name»''')
val targetScope = type2Scope.get(t)
targetScope.removeOne
val sups = superScopes.get(targetScope)
sups.forEach[removeOne]
if (this.partialInterpretation.minNewElements > 0) {
this.partialInterpretation.minNewElements = this.partialInterpretation.minNewElements - 1
}
if (this.partialInterpretation.maxNewElements > 0) {
this.partialInterpretation.maxNewElements = this.partialInterpretation.maxNewElements - 1
} else if (this.partialInterpretation.maxNewElements === 0) {
throw new IllegalArgumentException('''Inconsistent object creation: lower node limit is 0!''')
}
propagateAllScopeConstraints
// println('''Target Scope: «targetScope.minNewElements» - «targetScope.maxNewElements»''')
// println(''' «this.partialInterpretation.minNewElements» - «this.partialInterpretation.maxNewElements»''')
// this.partialInterpretation.scopes.forEach[println(''' «(it.targetTypeInterpretation as PartialComplexTypeInterpretation).interpretationOf.name»: «it.minNewElements»-«it.maxNewElements»''')]
// println('''All constraints are propagated upon increasing «(t as PartialComplexTypeInterpretation).interpretationOf.name»''')
}
private def propagateLowerLimitUp(Scope subScope, Scope superScope) {
if (subScope.minNewElements > superScope.minNewElements) {
superScope.minNewElements = subScope.minNewElements
return true
} else {
return false
}
}
private def propagateUpperLimitDown(Scope subScope, Scope superScope) {
if (superScope.maxNewElements >= 0 &&
(superScope.maxNewElements < subScope.maxNewElements || subScope.maxNewElements < 0)) {
// println('''
// «(subScope.targetTypeInterpretation as PartialComplexTypeInterpretation).interpretationOf.name» -> «(superScope.targetTypeInterpretation as PartialComplexTypeInterpretation).interpretationOf.name»
// subScope.maxNewElements «subScope.maxNewElements» = superScope.maxNewElements «superScope.maxNewElements»
// ''')
subScope.maxNewElements = superScope.maxNewElements
return true
} else {
return false
}
}
private def propagateLowerLimitUp(Scope subScope, PartialInterpretation p) {
if (subScope.minNewElements > p.minNewElements) {
// println('''
// «(subScope.targetTypeInterpretation as PartialComplexTypeInterpretation).interpretationOf.name» -> nodes
// p.minNewElements «p.minNewElements» = subScope.minNewElements «subScope.minNewElements»
// ''')
p.minNewElements = subScope.minNewElements
return true
} else {
return false
}
}
private def propagateUpperLimitDown(Scope subScope, PartialInterpretation p) {
if (p.maxNewElements >= 0 && (p.maxNewElements < subScope.maxNewElements || subScope.maxNewElements < 0)) {
// println('''
// «(subScope.targetTypeInterpretation as PartialComplexTypeInterpretation).interpretationOf.name» -> nodes
// subScope.maxNewElements «subScope.maxNewElements» = p.maxNewElements «p.maxNewElements»
// ''')
subScope.maxNewElements = p.maxNewElements
return true
} else {
return false
}
}
private def removeOne(Scope scope) {
if (scope.maxNewElements === 0) {
throw new IllegalArgumentException('''Inconsistent object creation: «scope.targetTypeInterpretation»''')
} else if (scope.maxNewElements > 0) {
scope.maxNewElements = scope.maxNewElements - 1
}
if (scope.minNewElements > 0) {
scope.minNewElements = scope.minNewElements - 1
}
}
}
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