bundles/org.simantics.scl.reflection/src/org/simantics/scl/reflection/internal/registry/BindingRegistry.java

   1 package org.simantics.scl.reflection.internal.registry;
   2
   3 import gnu.trove.map.hash.THashMap;
   4 import gnu.trove.procedure.TObjectObjectProcedure;
   5
   6 import org.eclipse.core.runtime.IConfigurationElement;
   7 import org.eclipse.core.runtime.IContributor;
   8 import org.eclipse.core.runtime.Platform;
   9 import org.eclipse.core.runtime.spi.RegistryContributor;
  10 import org.osgi.framework.Bundle;
  11 import org.simantics.scl.compiler.types.TCon;
  12 import org.simantics.scl.reflection.OntologyVersions;
  13 import org.simantics.scl.reflection.TypeNotFoundException;
  14 import org.simantics.scl.reflection.TypedValue;
  15 import org.simantics.scl.reflection.ValueNotFoundException;
  16 import org.simantics.scl.reflection.internal.Activator;
  17
  18 public class BindingRegistry {
  19
  20     private static boolean DEBUG_INIT = false;
  21
  22     private static THashMap<String, Namespace> namespaces =
  23             new THashMap<String, Namespace>();
  24
  25     public static TypedValue getValue(String path, String name) throws ValueNotFoundException {
  26         Namespace namespace = namespaces.get(path);
  27         if(namespace == null)
  28             throw new ValueNotFoundException("Didn't find namespace " + path + ".");
  29         return namespace.getValue(name);
  30     }
  31
  32     public static Class<?> getClass(TCon type) throws TypeNotFoundException {
  33         Namespace namespace = namespaces.get(type.module);
  34         if(namespace == null)
  35             throw new TypeNotFoundException("Didn't find namespace " + type.module + ".");
  36         return namespace.getClass(type.name);
  37     }
  38
  39     /*
  40      * Called directly only for testing
  41      */
  42     public static void initialize() {
  43         namespaces.clear();
  44         IConfigurationElement[] elements =
  45                 Platform.getExtensionRegistry().getConfigurationElementsFor("org.simantics.scl.reflection.binding");
  46         for(IConfigurationElement element : elements) {
  47             Bundle bundle = getBundle(element);
  48             findBindings(bundle, null, element, null);
  49         }
  50     }
  51
  52     static {
  53         initialize();
  54         if (DEBUG_INIT) {
  55             namespaces.forEachEntry(new TObjectObjectProcedure<String, Namespace>() {
  56
  57                 @Override
  58                 public boolean execute(String name, Namespace namespace) {
  59                     System.out.println(name);
  60                     namespace.print();
  61                     return true;
  62                 }
  63             });
  64         }
  65     }
  66
  67     private static Bundle getBundle(IConfigurationElement element) {
  68         IContributor contributor = element.getContributor();
  69         if(contributor instanceof RegistryContributor) {
  70             long id = Long.parseLong(((RegistryContributor) contributor).getActualId());
  71             return Activator.getInstance().getContext().getBundle(id);
  72         }
  73         else
  74             return Platform.getBundle(contributor.getName());
  75     }
  76
  77     private static Namespace getOrCreateNamespace(String path, ImportSeq importSeq) {
  78         Namespace namespace = namespaces.get(path);
  79         if(namespace == null) {
  80             namespace = new Namespace(path, importSeq);
  81             namespaces.put(path, namespace);
  82         }
  83         return namespace;
  84     }
  85
  86     private static void findBindings(
  87             Bundle bundle,
  88             String path,
  89             IConfigurationElement element,
  90             ImportSeq importSeq) {
  91         String elementName = element.getName();
  92         if(elementName.equals("namespace")) {
  93             if(path == null)
  94                 path = OntologyVersions.getInstance().currentVersion(element.getAttribute("path"));
  95             else
  96                 path = OntologyVersions.getInstance().currentVersion(path + "/" + element.getAttribute("path"));
  97             if(path.endsWith("/"))
  98                 path = path.substring(0, path.length()-1);
  99             for(IConfigurationElement childElement : element.getChildren())
 100                 if(childElement.getName().equals("import")) {
 101                     String path_ = OntologyVersions.getInstance().currentVersion(childElement.getAttribute("path"));
 102                     String localName = childElement.getAttribute("localName");
 103                     importSeq = new ImportSeq(importSeq, localName, path_);
 104                 }
 105             for(IConfigurationElement childElement : element.getChildren())
 106                 findBindings(bundle, path, childElement, importSeq);
 107         }
 108         else if(elementName.equals("class")) {
 109             String className = element.getAttribute("className");
 110             getOrCreateNamespace(path, importSeq)
 111                 .addClass(new Entry(bundle, className));
 112         }
 113         else if(elementName.equals("externalClass")) {
 114             String className = element.getAttribute("className");
 115             String alternativeName = element.getAttribute("alternativeName");
 116             getOrCreateNamespace(path, importSeq).addExternalClass(
 117                     new ExternalClass(bundle, className, alternativeName)
 118                     );
 119         }
 120         else if(elementName.equals("externalMethod")) {
 121             String className = element.getAttribute("className");
 122             String methodName = element.getAttribute("methodName");
 123             String alternativeName = element.getAttribute("alternativeName");
 124             getOrCreateNamespace(path, importSeq).addExternalMethod(
 125                     new ExternalMethod(bundle, className, methodName, alternativeName)
 126                     );
 127         }
 128     }
 129 }