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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.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 extension LogicProblemBuilder builder = new LogicProblemBuilder
protected val Logic2AlloyLanguageMapper forwardMapper
protected val Logic2AlloyLanguageMapperTrace forwardTrace;
private var ExprVar logicLanguage;
private var String logicBooleanTrue;
private var String logicBooleanFalse;
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 (A4Solution solution, Logic2AlloyLanguageMapper forwardMapper, Logic2AlloyLanguageMapperTrace trace) {
this.forwardMapper = forwardMapper
this.forwardTrace = trace
//TMP sig maps to identify alloy signatures by their names
val Map<String,Type> sigName2LogicType =
forwardTrace.type2ALSType.keySet.toMap[x|forwardTrace.type2ALSType.get(x).name]
val Map<String,DefinedElement> elementNameNamel2DefinedElement =
forwardTrace.definedElement2Declaration.keySet.toMap[x|forwardTrace.definedElement2Declaration.get(x).name]
// Fill the interpretation map with empty lists
forwardTrace.type2ALSType.keySet.filter(TypeDeclaration).forEach[x|interpretationOfUndefinedType.put(x,new LinkedList)]
// exporing individuals
for(atom: solution.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
} else if(sigName2LogicType.containsKey(typeName) && typeName.lookup(sigName2LogicType) instanceof TypeDefinition) {
val element = elementNameNamel2DefinedElement.get(atomName.head)
alloyAtom2LogicElement.put(atom.label,element)
} else if(sigName2LogicType.containsKey(typeName)) {
val type = sigName2LogicType.get(typeName)
val elementsOfType = interpretationOfUndefinedType.get(type)
val element = createDefinedElement => [
it.name += type.name
it.name += (elementsOfType.size+1).toString
]
alloyAtom2LogicElement.put(atom.label,element)
elementsOfType+=element
} 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 throw new UnsupportedOperationException('''Unknown atom: «atom»''')
}
//TMP field maps
val Map<String, Field> name2AlloyField = new HashMap
// exploring signatures
for(sig:solution.allReachableSigs) {
for(field : sig.fields) {
name2AlloyField.put(field.label,field)
}
}
// 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
}
def print() {
println('''Elements-----''')
interpretationOfUndefinedType.forEach[k,v|println('''«k.name» -> «v»''')]
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»)''')]]
}
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("\\$") }
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)
}
override getMinimalInteger() { this.minInt }
override getMaximalInteger() { this.maxInt }
// 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 isNumber(String s) {
try{
Integer.parseInt(s)
return true
}catch(NumberFormatException e) {
return false
}
}
}
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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