bundles/org.simantics.document.server/src/org/simantics/document/server/request/ServerSCLHandlerValueRequest.java

   1 package org.simantics.document.server.request;
   2
   3 import java.util.List;
   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.IndexRoot;
  11 import org.simantics.db.common.request.PossibleTypedParent;
  12 import org.simantics.db.common.request.UnaryRead;
  13 import org.simantics.db.exception.DatabaseException;
  14 import org.simantics.db.layer0.scl.AbstractExpressionCompilationContext;
  15 import org.simantics.db.layer0.scl.AbstractExpressionCompilationRequest;
  16 import org.simantics.db.layer0.util.RuntimeEnvironmentRequest2;
  17 import org.simantics.db.layer0.variable.Variable;
  18 import org.simantics.document.base.ontology.DocumentationResource;
  19 import org.simantics.document.server.request.ServerSCLHandlerValueRequest.CompilationContext;
  20 import org.simantics.layer0.Layer0;
  21 import org.simantics.scl.compiler.elaboration.expressions.EApply;
  22 import org.simantics.scl.compiler.elaboration.expressions.EConstant;
  23 import org.simantics.scl.compiler.elaboration.expressions.EVariable;
  24 import org.simantics.scl.compiler.elaboration.expressions.Expression;
  25 import org.simantics.scl.compiler.elaboration.modules.SCLValue;
  26 import org.simantics.scl.compiler.environment.Environment;
  27 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;
  28 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
  29 import org.simantics.scl.compiler.types.TCon;
  30 import org.simantics.scl.compiler.types.Type;
  31 import org.simantics.scl.compiler.types.Types;
  32 import org.simantics.scl.compiler.types.kinds.Kinds;
  33 import org.simantics.scl.runtime.SCLContext;
  34 import org.simantics.scl.runtime.function.Function1;
  35 import org.simantics.structural2.scl.ComponentTypeProperty;
  36 import org.simantics.structural2.scl.FindPossibleComponentTypeRequest;
  37 import org.simantics.structural2.scl.ReadComponentTypeInterfaceRequest;
  38 import org.simantics.utils.datastructures.Pair;
  39
  40 public class ServerSCLHandlerValueRequest extends AbstractExpressionCompilationRequest<CompilationContext, Variable> {
  41
  42         private final Pair<Resource,Resource> componentTypeAndRoot;
  43         private final Resource literal;
  44         protected String possibleExpectedValueType;
  45
  46         public static class CompilationContext extends AbstractExpressionCompilationContext {
  47                 public final Map<String, ComponentTypeProperty> propertyMap;
  48
  49                 public CompilationContext(RuntimeEnvironment runtimeEnvironment,
  50                                 Map<String, ComponentTypeProperty> propertyMap) {
  51                         super(runtimeEnvironment);
  52                         this.propertyMap = propertyMap;
  53                 }
  54         }
  55
  56         private ServerSCLHandlerValueRequest(Pair<Resource,Resource> componentTypeAndRoot, Resource literal, String possibleExpectedValueType) {
  57                 assert(literal != null);
  58                 this.literal = literal;
  59                 this.componentTypeAndRoot = componentTypeAndRoot;
  60                 this.possibleExpectedValueType = possibleExpectedValueType;
  61         }
  62
  63         public ServerSCLHandlerValueRequest(ReadGraph graph, Variable context) throws DatabaseException {
  64                 this(getComponentTypeAndRoot(graph, context), context.getRepresents(graph), resolveExpectedValueType(graph, context.getPredicateResource(graph)));
  65         }
  66
  67         public ServerSCLHandlerValueRequest(ReadGraph graph, Resource s, Resource o, Resource p) throws DatabaseException {
  68                 this(getComponentTypeAndRoot(graph, s), o, resolveExpectedValueType(graph, p));
  69         }
  70
  71         private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Variable property)  throws DatabaseException {
  72                 Variable parent = property.getParent(graph);
  73                 Resource represents = parent.getRepresents(graph);
  74                 if(represents != null) {
  75                         Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(represents));
  76                         if(type != null) {
  77                                 Resource root = graph.syncRequest(new IndexRoot(type));
  78                                 return Pair.make(type, root);
  79                         }
  80                 }
  81                 while(represents == null) {
  82                         parent = parent.getParent(graph);
  83                         represents = parent.getPossibleRepresents(graph);
  84                 }
  85                 Resource componentType = parent.getType(graph);
  86                 Resource root = graph.syncRequest(new IndexRoot(parent.getRepresents(graph)));
  87                 return Pair.make(componentType, root);
  88         }
  89
  90     public static List<TCon> getEffects(ReadGraph graph, Variable context) throws DatabaseException {
  91         try {
  92                 ServerSCLHandlerValueRequest req = new ServerSCLHandlerValueRequest(graph, context);
  93                 return req.getExpressionEffects(graph);
  94         } catch (DatabaseException e) {
  95             throw (DatabaseException)e;
  96         } catch (Throwable t) {
  97             throw new DatabaseException(t);
  98         }
  99     }
 100
 101         public static Object compileAndEvaluate(ReadGraph graph, Variable context) throws DatabaseException {
 102                 SCLContext sclContext = SCLContext.getCurrent();
 103         Object oldGraph = sclContext.get("graph");
 104                 try {
 105                         Function1<Variable,Object> exp = graph.syncRequest(new ServerSCLHandlerValueRequest(graph, context),
 106                                         TransientCacheListener.<Function1<Variable,Object>>instance());
 107                         sclContext.put("graph", graph);
 108                         return exp.apply(context);
 109                 } catch (DatabaseException e) {
 110                         throw (DatabaseException)e;
 111                 } catch (Throwable t) {
 112                         throw new DatabaseException(t);
 113                 } finally {
 114             sclContext.put("graph", oldGraph);
 115                 }
 116         }
 117
 118         @Override
 119         protected String getExpressionText(ReadGraph graph)
 120                         throws DatabaseException {
 121                 Layer0 L0 = Layer0.getInstance(graph);
 122                 String exp = graph.getRelatedValue(literal, L0.SCLValue_expression, Bindings.STRING);
 123                 return "\\context -> " + exp;
 124         }
 125
 126         protected RuntimeEnvironmentRequest2 getRuntimeEnvironmentRequest(Resource componentType, Resource indexRoot) {
 127                 return new RuntimeEnvironmentRequest2(componentType, indexRoot) {
 128                         @Override
 129                         protected void fillEnvironmentSpecification(
 130                                         EnvironmentSpecification environmentSpecification) {
 131                         }
 132                 };
 133         }
 134
 135         @Override
 136         protected CompilationContext getCompilationContext(ReadGraph graph) throws DatabaseException {
 137
 138                 return graph.syncRequest(new UnaryRead<Pair<Resource,Resource>,CompilationContext>(componentTypeAndRoot) {
 139
 140                         @Override
 141                         public CompilationContext perform(ReadGraph graph) throws DatabaseException {
 142
 143                                 RuntimeEnvironment runtimeEnvironment = graph.syncRequest(getRuntimeEnvironmentRequest(parameter.first, parameter.second));
 144                                 Map<String, ComponentTypeProperty> propertyMap =
 145                                                 graph.syncRequest(new ReadComponentTypeInterfaceRequest(parameter.first, runtimeEnvironment.getEnvironment()),
 146                                                                 TransientCacheListener.<Map<String, ComponentTypeProperty>>instance());
 147                                 return new CompilationContext(runtimeEnvironment, propertyMap);
 148
 149
 150                         }
 151
 152                 });
 153
 154         }
 155
 156         @Override
 157         protected Type getContextVariableType() {
 158                 return VARIABLE;
 159         }
 160
 161         private static Expression accessInputVariable(Environment environment,
 162                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable) {
 163                 SCLValue variableParentFunction = environment.getValue(VARIABLE_PARENT);
 164                 return new EApply(new EConstant(variableParentFunction),
 165                                 new EApply(new EConstant(variableParentFunction),
 166                                                 new EVariable(contextVariable)));
 167         }
 168
 169         protected static Expression standardGetProperty(
 170                         Environment environment,
 171                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 172                         String name,
 173                         Type type) {
 174                 return getPropertyFlexible(environment, accessInputVariable(environment, contextVariable), name, type);
 175         }
 176
 177         @Override
 178         protected Expression getVariableAccessExpression(
 179                         ReadGraph graph,
 180                         CompilationContext context,
 181                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 182                         String name) throws DatabaseException {
 183                 ComponentTypeProperty property = context.propertyMap.get(name);
 184                 if(property != null)
 185                         return standardGetProperty(
 186                                         context.runtimeEnvironment.getEnvironment(),
 187                                         contextVariable,
 188                                         name,
 189                                         property.type == null ? Types.metaVar(Kinds.STAR) : property.type);
 190                 else {
 191
 192 //                      if(context.propertyMap.containsKey(name)) {
 193 //
 194 //                              org.simantics.scl.compiler.elaboration.expressions.Variable parametersVariable = new org.simantics.scl.compiler.elaboration.expressions.Variable("context", COMMAND_CONTEXT);
 195 //
 196 //                              Environment environment = context.runtimeEnvironment.getEnvironment();
 197 //
 198 ////                            return new EApply(
 199 ////                            new EConstant(environment.getValue(FROM_DYNAMIC), Types.STRING),
 200 //                              return new EApply(
 201 //                                      new EConstant(environment.getValue(CONTEXT_VARIABLE), Types.DYNAMIC),
 202 //                                      new EVariable(parametersVariable),
 203 //                                      new ELiteral(new StringConstant(name)));
 204 //
 205 //                      }
 206
 207                         return getSpecialVariableAccessExpression(graph, context, contextVariable, name);
 208
 209                 }
 210         }
 211
 212         protected Expression getSpecialVariableAccessExpression(ReadGraph graph,
 213                         CompilationContext context,
 214                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 215                         String name) throws DatabaseException {
 216                 if(name.equals("input")) {
 217                         Environment environment = context.runtimeEnvironment.getEnvironment();
 218                         return accessInputVariable(environment, contextVariable);
 219                 } else if(name.equals("self"))
 220                         return new EVariable(contextVariable);
 221                 else
 222                         return null;
 223         }
 224
 225     @Override
 226     protected Type getExpectedType(ReadGraph graph, CompilationContext context) throws DatabaseException {
 227         return super.getExpectedType(graph, context);
 228     }
 229
 230         @Override
 231         public int hashCode() {
 232                 return 31*(31*getClass().hashCode() + literal.hashCode()) + componentTypeAndRoot.hashCode();
 233         }
 234
 235         @Override
 236         public boolean equals(Object obj) {
 237                 if (this == obj)
 238                         return true;
 239                 if (obj == null)
 240                         return false;
 241                 if (getClass() != obj.getClass())
 242                         return false;
 243                 ServerSCLHandlerValueRequest other = (ServerSCLHandlerValueRequest) obj;
 244                 return literal.equals(other.literal) && componentTypeAndRoot.equals(other.componentTypeAndRoot);
 245         }
 246
 247         private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Resource component)  throws DatabaseException {
 248                 if(component != null) {
 249                         Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(component));
 250                         if(type != null) {
 251                                 Resource root = graph.syncRequest(new IndexRoot(type));
 252                                 return Pair.make(type, root);
 253                         } else {
 254                                 Resource doc = graph.syncRequest(new PossibleTypedParent(component, DocumentationResource.getInstance(graph).Document));
 255                                 Resource componentType = graph.getSingleType(doc);
 256                                 Resource root = graph.syncRequest(new IndexRoot(doc));
 257                                 return Pair.make(componentType, root);
 258                         }
 259                 }
 260                 throw new IllegalStateException();
 261         }
 262
 263 }