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

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