bundles/org.simantics.modeling/src/org/simantics/modeling/ComponentTypeScriptRequest.java

   1 package org.simantics.modeling;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 import java.util.Arrays;\r
   5 import java.util.Collections;\r
   6 import java.util.List;\r
   7 \r
   8 import org.simantics.databoard.Bindings;\r
   9 import org.simantics.db.ReadGraph;\r
  10 import org.simantics.db.Resource;\r
  11 import org.simantics.db.exception.DatabaseException;\r
  12 import org.simantics.db.request.Read;\r
  13 import org.simantics.scl.compiler.environment.LocalEnvironment;\r
  14 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;\r
  15 import org.simantics.scl.compiler.errors.CompilationError;\r
  16 import org.simantics.scl.compiler.module.repository.ImportFailure;\r
  17 import org.simantics.scl.compiler.module.repository.ImportFailureException;\r
  18 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;\r
  19 import org.simantics.scl.compiler.top.ExpressionEvaluator;\r
  20 import org.simantics.scl.compiler.top.SCLExpressionCompilationException;\r
  21 import org.simantics.structural.stubs.StructuralResource2;\r
  22 \r
  23 public class ComponentTypeScriptRequest implements Read<ComponentTypeScriptResult> {\r
  24 \r
  25     private Resource script;\r
  26     private Resource componentType;\r
  27 \r
  28     public ComponentTypeScriptRequest(Resource script, Resource componentType) {\r
  29         this.script = script;\r
  30         this.componentType = componentType;\r
  31     }\r
  32     \r
  33     @Override\r
  34     public ComponentTypeScriptResult perform(ReadGraph graph) throws DatabaseException {\r
  35         IComponentTypeScriptEnvironmentFactory factory = graph.adapt(componentType, IComponentTypeScriptEnvironmentFactory.class);\r
  36 \r
  37         EnvironmentSpecification spec = factory.getRuntimeEnvironmentSpecification(graph, componentType);\r
  38         \r
  39         RuntimeEnvironment runtime;\r
  40         try {\r
  41             runtime = graph.syncRequest(new ComponentTypeScriptRuntimeEnvironmentRequest(spec));\r
  42         }\r
  43         catch (DatabaseException e) {\r
  44             if (e.getCause() instanceof ImportFailureException) {\r
  45                 ImportFailureException cause = (ImportFailureException)e.getCause();\r
  46                 // if one of the scl modules can not be imported just show an error\r
  47                 // at the very start of the editor\r
  48                 List<CompilationError> errors = new ArrayList<CompilationError>();\r
  49                 for (ImportFailure failure : cause.failures) {\r
  50                     errors.add(new CompilationError(0, failure.toString()));\r
  51                 }\r
  52                 return new ComponentTypeScriptResult(errors, null);\r
  53             }\r
  54             else {\r
  55                 throw e;\r
  56             }\r
  57         }\r
  58         \r
  59         StructuralResource2 str = StructuralResource2.getInstance(graph);\r
  60         String code = graph.getRelatedValue(script, str.ComponentTypeScript_code, Bindings.STRING);\r
  61         \r
  62         ExpressionEvaluator eval = new ExpressionEvaluator(runtime, code);\r
  63         eval.interpretIfPossible(false).parseAsBlock(true);\r
  64         \r
  65         // set the local environment if necessary\r
  66         LocalEnvironment local = factory.getLocalEnvironment(graph, componentType);\r
  67         if (local != null)\r
  68             eval.localEnvironment(local);\r
  69         \r
  70         Object result;\r
  71         try {\r
  72             result = eval.eval();\r
  73         }\r
  74         catch (SCLExpressionCompilationException e) {\r
  75             return new ComponentTypeScriptResult(Arrays.asList(e.getErrors()), null);\r
  76         }\r
  77         \r
  78         return new ComponentTypeScriptResult(Collections.<CompilationError>emptyList(), \r
  79                                              result, \r
  80                                              factory.getModuleReads(local), \r
  81                                              factory.getModuleWrites(local));\r
  82     }\r
  83     \r
  84     @Override\r
  85     public int hashCode() {\r
  86         final int prime = 31;\r
  87         int result = 1;\r
  88         result = prime * result\r
  89                 + ((componentType == null) ? 0 : componentType.hashCode());\r
  90         result = prime * result + ((script == null) ? 0 : script.hashCode());\r
  91         return result;\r
  92     }\r
  93 \r
  94     @Override\r
  95     public boolean equals(Object obj) {\r
  96         if (this == obj)\r
  97             return true;\r
  98         if (obj == null)\r
  99             return false;\r
 100         if (getClass() != obj.getClass())\r
 101             return false;\r
 102         ComponentTypeScriptRequest other = (ComponentTypeScriptRequest) obj;\r
 103         if (componentType == null) {\r
 104             if (other.componentType != null)\r
 105                 return false;\r
 106         } else if (!componentType.equals(other.componentType))\r
 107             return false;\r
 108         if (script == null) {\r
 109             if (other.script != null)\r
 110                 return false;\r
 111         } else if (!script.equals(other.script))\r
 112             return false;\r
 113         return true;\r
 114     }\r
 115 \r
 116 }\r