bundles/org.simantics.structural2/src/org/simantics/structural2/scl/AbstractCompileStructuralValueRequest.java

   1 package org.simantics.structural2.scl;
   2
   3 import java.util.Collections;
   4 import java.util.Map;
   5
   6 import org.simantics.databoard.Bindings;
   7 import org.simantics.db.ReadGraph;
   8 import org.simantics.db.Resource;
   9 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
  10 import org.simantics.db.common.request.PossibleIndexRoot;
  11 import org.simantics.db.common.request.ResourceRead2;
  12 import org.simantics.db.exception.DatabaseException;
  13 import org.simantics.db.layer0.scl.AbstractExpressionCompilationContext;
  14 import org.simantics.db.layer0.scl.AbstractExpressionCompilationRequest;
  15 import org.simantics.db.layer0.util.RuntimeEnvironmentRequest;
  16 import org.simantics.db.layer0.util.RuntimeEnvironmentRequest2;
  17 import org.simantics.db.layer0.variable.Variable;
  18 import org.simantics.layer0.Layer0;
  19 import org.simantics.scl.compiler.elaboration.expressions.EApply;
  20 import org.simantics.scl.compiler.elaboration.expressions.EConstant;
  21 import org.simantics.scl.compiler.elaboration.expressions.EVariable;
  22 import org.simantics.scl.compiler.elaboration.expressions.Expression;
  23 import org.simantics.scl.compiler.elaboration.modules.SCLValue;
  24 import org.simantics.scl.compiler.environment.Environment;
  25 import org.simantics.scl.compiler.environment.Environments;
  26 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
  27 import org.simantics.scl.compiler.top.SCLExpressionCompilationException;
  28 import org.simantics.scl.compiler.types.Type;
  29 import org.simantics.structural2.scl.AbstractCompileStructuralValueRequest.CompilationContext;
  30
  31 /**
  32  * Compiles an SCL expression that is attached to a literal
  33  * whose parent is a component that is a part of a component type.
  34  *
  35  * @author Antti Villberg
  36  */
  37 abstract public class AbstractCompileStructuralValueRequest extends AbstractExpressionCompilationRequest<CompilationContext, Variable> {
  38
  39     protected final Resource relation;
  40
  41     public static class CompilationContext extends AbstractExpressionCompilationContext {
  42         public final Map<String, ComponentTypeProperty> propertyMap;
  43
  44         public CompilationContext(RuntimeEnvironment runtimeEnvironment,
  45                 Map<String, ComponentTypeProperty> propertyMap) {
  46             super(runtimeEnvironment);
  47             this.propertyMap = propertyMap;
  48         }
  49     }
  50
  51     public AbstractCompileStructuralValueRequest(Resource relation) {
  52         this.relation = relation;
  53     }
  54
  55     @Override
  56     abstract protected String getExpressionText(ReadGraph graph) throws DatabaseException;
  57     abstract protected Resource getIndexRoot(ReadGraph graph) throws DatabaseException;
  58     abstract protected Resource getComponentType(ReadGraph graph) throws DatabaseException;
  59
  60     @Override
  61     protected Type getExpectedType(ReadGraph graph, CompilationContext context)
  62             throws DatabaseException {
  63         Layer0 L0 = Layer0.getInstance(graph);
  64         String valueType = graph.getPossibleRelatedValue(relation, L0.RequiresValueType, Bindings.STRING);
  65         if(valueType != null) {
  66             Resource relationIndexRoot = graph.syncRequest(new PossibleIndexRoot(relation));
  67             RuntimeEnvironment relationRuntimeEnvironment = relationIndexRoot != null ? graph.syncRequest(new RuntimeEnvironmentRequest(relationIndexRoot)) : context.runtimeEnvironment;
  68             try {
  69                 return Environments.getType(relationRuntimeEnvironment.getEnvironment(), valueType);
  70             } catch (SCLExpressionCompilationException e) {
  71                 e.printStackTrace();
  72             }
  73         }
  74         return super.getExpectedType(graph, context);
  75     }
  76
  77
  78
  79     @Override
  80     protected CompilationContext getCompilationContext(ReadGraph graph)
  81             throws DatabaseException {
  82         Resource indexRoot = getIndexRoot(graph);
  83         Resource componentType = getComponentType(graph);
  84         if(componentType == null) {
  85             RuntimeEnvironment runtimeEnvironment = graph.syncRequest(new RuntimeEnvironmentRequest(indexRoot));
  86             return new CompilationContext(runtimeEnvironment, Collections.<String,ComponentTypeProperty>emptyMap());
  87         } else {
  88                 return graph.syncRequest(new ResourceRead2<CompilationContext>(componentType, indexRoot) {
  89                     @Override
  90                     public CompilationContext perform(ReadGraph graph)
  91                             throws DatabaseException {
  92                         RuntimeEnvironment runtimeEnvironment = graph.syncRequest(new RuntimeEnvironmentRequest2(resource, resource2));
  93                         Map<String, ComponentTypeProperty> propertyMap =
  94                                 graph.syncRequest(new ReadComponentTypeInterfaceRequest(resource, runtimeEnvironment.getEnvironment()),
  95                                         TransientCacheListener.<Map<String, ComponentTypeProperty>>instance());
  96                         return new CompilationContext(runtimeEnvironment, propertyMap);
  97                     }
  98                 });
  99         }
 100     }
 101
 102     @Override
 103     protected Type getContextVariableType() {
 104         return VARIABLE;
 105     }
 106
 107     protected static Expression accessInputVariable(Environment environment,
 108             org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable) {
 109         SCLValue variableParentFunction = environment.getValue(VARIABLE_PARENT);
 110         return new EApply(new EConstant(variableParentFunction),
 111                 new EApply(new EConstant(variableParentFunction),
 112                         new EVariable(contextVariable)));
 113     }
 114
 115     @Override
 116     protected Expression getVariableAccessExpression(
 117             ReadGraph graph,
 118             CompilationContext context,
 119             org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 120             String name) throws DatabaseException {
 121         ComponentTypeProperty property = context.propertyMap.get(name);
 122         if(property != null) {
 123             Environment environment = context.runtimeEnvironment.getEnvironment();
 124             return getPropertyFlexible(environment,
 125                     accessInputVariable(environment, contextVariable),
 126                     name,
 127                     property.type);
 128         }
 129         else if(name.equals("input")) {
 130             Environment environment = context.runtimeEnvironment.getEnvironment();
 131             return accessInputVariable(environment, contextVariable);
 132         }
 133         else if(name.equals("self"))
 134             return new EVariable(contextVariable);
 135         else
 136             return null;
 137     }
 138
 139 }