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package hu.bme.mit.inf.dlsreasoner.alloy.reasoner.builder
import edu.mit.csail.sdg.alloy4compiler.ast.ExprVar
import edu.mit.csail.sdg.alloy4compiler.ast.Sig
import edu.mit.csail.sdg.alloy4compiler.ast.Sig.Field
import edu.mit.csail.sdg.alloy4compiler.translator.A4Solution
import hu.bme.mit.inf.dslreasoner.logic.model.builder.LogicModelInterpretation
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.ConstantDeclaration
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.DefinedElement
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.FunctionDeclaration
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.LogiclanguageFactory
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.RelationDeclaration
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.Type
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.TypeDeclaration
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.TypeDefinition
import java.util.Arrays
import java.util.HashMap
import java.util.LinkedList
import java.util.List
import java.util.Map
import java.util.Set
import static extension hu.bme.mit.inf.dslreasoner.util.CollectionsUtil.*
class AlloyModelInterpretation implements LogicModelInterpretation{
protected val extension LogiclanguageFactory factory = LogiclanguageFactory.eINSTANCE
protected val AlloyModelInterpretation_TypeInterpretation typeInterpretator
protected val Logic2AlloyLanguageMapper forwardMapper
protected val Logic2AlloyLanguageMapperTrace forwardTrace;
private var ExprVar logicLanguage;
private var String logicBooleanTrue;
private var String logicBooleanFalse;
private val Map<String, DefinedElement> alloyAtom2LogicElement = new HashMap
private val Map<TypeDeclaration, List<DefinedElement>> interpretationOfUndefinedType = new HashMap
private val Map<ConstantDeclaration, Object> constant2Value
private val Map<FunctionDeclaration, ? extends Map<ParameterSubstitution, Object>> function2Value
private val Map<RelationDeclaration, ? extends Set<ParameterSubstitution>> relation2Value
private val int minInt
private val int maxInt
public new (AlloyModelInterpretation_TypeInterpretation typeInterpretator, A4Solution solution, Logic2AlloyLanguageMapper forwardMapper, Logic2AlloyLanguageMapperTrace trace) {
this.typeInterpretator = typeInterpretator
this.forwardMapper = forwardMapper
this.forwardTrace = trace
// Maps to trace language elements to the parsed problem.
val Map<String, Sig> name2AlloySig = new HashMap
val Map<String, Field> name2AlloyField = new HashMap
// exploring signatures
for(sig:solution.allReachableSigs) {
name2AlloySig.put(sig.label,sig)
for(field : sig.fields) {
name2AlloyField.put(field.label,field)
}
}
val unknownAtoms = collectUnknownAndResolveKnownAtoms(solution.allAtoms)
this.typeInterpretator.resolveUnknownAtoms(
unknownAtoms,
solution,
forwardTrace,
name2AlloySig,
name2AlloyField,
alloyAtom2LogicElement,
interpretationOfUndefinedType)
// eval consants
constant2Value = forwardTrace.constantDeclaration2LanguageField.mapValues[
solution.eval(it.name.lookup(name2AlloyField)).head.atom(1).atomLabel2Term
]
// eval functions
val hostedfunction2Value = forwardTrace.functionDeclaration2HostedField.mapValues[ function |
newHashMap(
solution.eval(function.name.lookup(name2AlloyField))
.map[t | new ParameterSubstitution(#[t.atom(0).atomLabel2Term]) -> t.atom(1).atomLabel2Term])]
val globalfunction2Value = forwardTrace.functionDeclaration2LanguageField.keySet.toInvertedMap[ function |
val alsFunction = function.lookup(forwardTrace.functionDeclaration2LanguageField)
val paramIndexes = 1..(function.parameters.size)
return newHashMap(
solution.eval(alsFunction.name.lookup(name2AlloyField)).map[t |
new ParameterSubstitution(paramIndexes.map[t.atom(it).atomLabel2Term])
->
t.atom(function.parameters.size + 1).atomLabel2Term
])]
this.function2Value = Union(hostedfunction2Value,globalfunction2Value)
// eval relations
val hostedRelation2Value = forwardTrace.relationDeclaration2Field.mapValues[ relation |
solution.eval(relation.name.lookup(name2AlloyField)).map[ t |
new ParameterSubstitution(#[t.atom(0).atomLabel2Term,t.atom(1).atomLabel2Term])].toSet]
val globalRelation2Value = forwardTrace.relationDeclaration2Global.mapValues[ relation |
solution.eval(relation.name.lookup(name2AlloyField)).map[ t |
new ParameterSubstitution((1..<t.arity).map[int a|t.atom(a).atomLabel2Term])].toSet]
this.relation2Value = Union(hostedRelation2Value,globalRelation2Value)
//Int limits
this.minInt = solution.min
this.maxInt = solution.max
//print(trace)
}
def List<ExprVar> collectUnknownAndResolveKnownAtoms(Iterable<ExprVar> allAtoms) {
val List<ExprVar> unknownAtoms = new LinkedList
for(atom: allAtoms) {
val typeName = getName(atom.type)
val atomName = atom.name
//println(atom.toString + " < - " + typeName)
if(typeName == forwardTrace.logicLanguage.name) {
this.logicLanguage = atom
} else if(typeName == "Int" || typeName == "seq/Int") {
// do nothing, integers will be parsed from the string
} else if(forwardTrace.boolType != null && typeName == forwardTrace.boolType.name) {
if(atomName.head == forwardTrace.boolTrue.name) { this.logicBooleanTrue = atom.label }
else if(atomName.head == forwardTrace.boolFalse.name) { this.logicBooleanFalse = atom.label}
else throw new UnsupportedOperationException('''Unknown boolean value: «atom»''')
}
else unknownAtoms += atom
}
return unknownAtoms
}
def private getName(edu.mit.csail.sdg.alloy4compiler.ast.Type type) {
val name = type.toString
if(name.startsWith("{this/") && name.endsWith("}")) {
return type.toString.replaceFirst("\\{this\\/","").replace("}","")
}
else throw new IllegalArgumentException('''Unknown type format: "«name»"!''')
}
def private getName(ExprVar atom) { atom.toString.split("\\$") }
def print(Logic2AlloyLanguageMapperTrace trace) {
println('''Undefined-----''')
interpretationOfUndefinedType.forEach[k,v|println('''«k.name» -> «v.map[name]»''')]
//println('''Defined-----''')
//trace.type2ALSType.keySet.filter(TypeDefinition).forEach[println('''«it.name» -> «it.elements.map[name.join]»''')]
println('''Constants-----''')
constant2Value.forEach[k, v|println('''«k.name» : «v»''')]
println('''Functions-----''')
function2Value.forEach[f,m|m.forEach[k,v| println('''«f.name» : «k» |-> «v»''')]]
println('''Relations-----''')
relation2Value.forEach[r,s|s.forEach[t | println('''«r.name»: («t»)''')]]
}
override getElements(Type type) { getElementsDispatch(type) }
def private dispatch getElementsDispatch(TypeDeclaration declaration) { return declaration.lookup(this.interpretationOfUndefinedType) }
def private dispatch getElementsDispatch(TypeDefinition declaration) { return declaration.elements }
override getInterpretation(FunctionDeclaration function, Object[] parameterSubstitution) {
val transformedParams = new ParameterSubstitution(parameterSubstitution)
return transformedParams.lookup(
function.lookup(this.function2Value)
)
}
override getInterpretation(RelationDeclaration relation, Object[] parameterSubstitution) {
relation.lookup(this.relation2Value).contains(new ParameterSubstitution(parameterSubstitution))
}
override getInterpretation(ConstantDeclaration constant) {
constant.lookup(this.constant2Value)
}
// Alloy term -> logic term
def private atomLabel2Term(String label) {
if(label.number) return Integer.parseInt(label)
else if(label == this.logicBooleanTrue) return true
else if(label == this.logicBooleanFalse) return false
else if(this.alloyAtom2LogicElement.containsKey(label)) return label.lookup(alloyAtom2LogicElement)
else throw new IllegalArgumentException('''Unknown atom label: "«label»"!''')
}
def private isNumber(String s) {
try{
Integer.parseInt(s)
return true
}catch(NumberFormatException e) {
return false
}
}
override getAllIntegersInStructure() {
throw new UnsupportedOperationException("TODO: auto-generated method stub")
}
override getAllRealsInStructure() {
throw new UnsupportedOperationException("TODO: auto-generated method stub")
}
override getAllStringsInStructure() {
throw new UnsupportedOperationException("TODO: auto-generated method stub")
}
}
/**
* Helper class for efficiently matching parameter substitutions for functions and relations.
*/
class ParameterSubstitution{
val Object[] data;
new(Object[] data) { this.data = data }
override equals(Object obj) {
if(obj === this) return true
else if(obj == null) return false
if(obj instanceof ParameterSubstitution) {
return Arrays.equals(this.data,obj.data)
}
return false
}
override hashCode() {
Arrays.hashCode(data)
}
}
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