| 1 | package de.uka.ipd.sdq.pcmsolver.visitors; |
| 2 | |
| 3 | |
| 4 | import java.util.HashMap; |
| 5 | |
| 6 | import org.apache.log4j.Logger; |
| 7 | import org.eclipse.emf.common.util.BasicEList; |
| 8 | import org.eclipse.emf.common.util.EList; |
| 9 | |
| 10 | import de.uka.ipd.sdq.context.computed_usage.ExternalCallOutput; |
| 11 | import de.uka.ipd.sdq.context.computed_usage.Input; |
| 12 | import de.uka.ipd.sdq.pcm.parameter.CharacterisedVariable; |
| 13 | import de.uka.ipd.sdq.pcm.parameter.VariableCharacterisation; |
| 14 | import de.uka.ipd.sdq.pcm.parameter.VariableUsage; |
| 15 | import de.uka.ipd.sdq.pcmsolver.transformations.ContextWrapper; |
| 16 | import de.uka.ipd.sdq.stoex.AbstractNamedReference; |
| 17 | import de.uka.ipd.sdq.stoex.Expression; |
| 18 | import de.uka.ipd.sdq.stoex.NamespaceReference; |
| 19 | import de.uka.ipd.sdq.stoex.Variable; |
| 20 | import de.uka.ipd.sdq.stoex.analyser.visitors.ExpressionSolveVisitor; |
| 21 | import de.uka.ipd.sdq.stoex.analyser.visitors.TypeEnum; |
| 22 | |
| 23 | public class ExpressionParameterSolverVisitor extends ExpressionSolveVisitor { |
| 24 | |
| 25 | private static Logger logger = Logger |
| 26 | .getLogger(ExpressionParameterSolverVisitor.class.getName()); |
| 27 | |
| 28 | //private Context context; |
| 29 | private ContextWrapper contextWrapper; |
| 30 | |
| 31 | public ExpressionParameterSolverVisitor(HashMap<Expression, TypeEnum> typeAnn, ContextWrapper ctxWrp){ |
| 32 | super(typeAnn); |
| 33 | this.contextWrapper = ctxWrp; |
| 34 | } |
| 35 | |
| 36 | /* (non-Javadoc) |
| 37 | * @see de.uka.ipd.sdq.stoex.analyser.visitors.ExpressionSolveVisitor#caseVariable(de.uka.ipd.sdq.stoex.Variable) |
| 38 | * |
| 39 | * Solves a parametric dependency. For a given variable, it tries to |
| 40 | * determine it's actual specification (e.g. probability distribution or |
| 41 | * constant) by looking it up in the usage context. |
| 42 | */ |
| 43 | @Override |
| 44 | public Object caseVariable(Variable var){ |
| 45 | AbstractNamedReference anr = var.getId_Variable(); |
| 46 | CharacterisedVariable chVar = (CharacterisedVariable)var; |
| 47 | |
| 48 | //Contains both input parameters specified in the interface and component parameters. |
| 49 | EList<VariableUsage> vuList = new BasicEList<VariableUsage>(); |
| 50 | Input input = contextWrapper.getCompUsgCtx().getInput_ComputedUsageContext(); |
| 51 | if (input !=null){ |
| 52 | vuList.addAll(input.getParameterChacterisations_Input()); |
| 53 | } |
| 54 | |
| 55 | EList<ExternalCallOutput> ecoList = contextWrapper.getCompUsgCtx().getExternalCallOutput_ComputedUsageContext(); |
| 56 | for (ExternalCallOutput eco : ecoList){ |
| 57 | // TODO: recognise scopes |
| 58 | EList<VariableUsage> vuList2 = eco.getParameterCharacterisations_ExternalCallOutput(); |
| 59 | vuList.addAll(vuList2); |
| 60 | } |
| 61 | |
| 62 | String soughtParameterName = getFullParameterName(anr); |
| 63 | for (VariableUsage vu : vuList){ |
| 64 | AbstractNamedReference ref = vu.getNamedReference__VariableUsage(); |
| 65 | String currentParameterName = getFullParameterName(ref); |
| 66 | |
| 67 | if (currentParameterName.equals(soughtParameterName)){ |
| 68 | EList<VariableCharacterisation> varCharList = vu.getVariableCharacterisation_VariableUsage(); |
| 69 | |
| 70 | for (VariableCharacterisation vc : varCharList){ // iterate over a parameter's characterisations |
| 71 | if (vc.getType() == chVar.getCharacterisationType()){ |
| 72 | String specification = vc.getSpecification_VariableCharacterisation().getSpecification(); |
| 73 | Expression expr = ExpressionHelper.parseToExpression(specification); |
| 74 | return expr; |
| 75 | } |
| 76 | } |
| 77 | throw new RuntimeException("Variable Characterisation missing in Usage Context ("+soughtParameterName+")!"); |
| 78 | } |
| 79 | } |
| 80 | throw new RuntimeException("Variable Characterisation missing in Usage Context ("+soughtParameterName+")!"); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * @param currentParameterName |
| 85 | * @param ref |
| 86 | * @return |
| 87 | */ |
| 88 | private String getFullParameterName(AbstractNamedReference ref) { |
| 89 | String name = ""; |
| 90 | while (ref instanceof NamespaceReference){ |
| 91 | NamespaceReference nsRef = (NamespaceReference)ref; |
| 92 | name += nsRef.getReferenceName() + "."; |
| 93 | ref = nsRef.getInnerReference_NamespaceReference(); |
| 94 | } |
| 95 | return name += ref.getReferenceName(); |
| 96 | } |
| 97 | } |