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.exception.DatabaseException;
  12 import org.simantics.db.layer0.request.VariableRead;
  13 import org.simantics.db.layer0.scl.AbstractExpressionCompilationContext;
  14 import org.simantics.db.layer0.scl.AbstractExpressionCompilationRequest;
  15 import org.simantics.db.layer0.util.RuntimeEnvironmentRequest2;
  16 import org.simantics.db.layer0.variable.Variable;
  17 import org.simantics.document.server.request.ServerSCLHandlerValueRequest.CompilationContext;
  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.specification.EnvironmentSpecification;
  26 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
  27 import org.simantics.scl.compiler.types.TCon;
  28 import org.simantics.scl.compiler.types.Type;
  29 import org.simantics.scl.compiler.types.Types;
  30 import org.simantics.scl.compiler.types.kinds.Kinds;
  31 import org.simantics.scl.runtime.SCLContext;
  32 import org.simantics.scl.runtime.function.Function1;
  33 import org.simantics.structural2.scl.ComponentTypeProperty;
  34 import org.simantics.structural2.scl.FindPossibleComponentTypeRequest;
  35 import org.simantics.structural2.scl.ReadComponentTypeInterfaceRequest;
  36 import org.simantics.utils.datastructures.Pair;
  37
  38 public class ServerSCLHandlerValueRequest extends AbstractExpressionCompilationRequest<CompilationContext, Variable> {
  39
  40         private final Variable context;
  41         private final Pair<Resource,Resource> componentTypeAndRoot;
  42         private final Resource literal;
  43         protected String possibleExpectedValueType;
  44
  45         public static class CompilationContext extends AbstractExpressionCompilationContext {
  46                 public final Map<String, ComponentTypeProperty> propertyMap;
  47
  48                 public CompilationContext(RuntimeEnvironment runtimeEnvironment,
  49                                 Map<String, ComponentTypeProperty> propertyMap) {
  50                         super(runtimeEnvironment);
  51                         this.propertyMap = propertyMap;
  52                 }
  53         }
  54
  55         private ServerSCLHandlerValueRequest(Variable context, Pair<Resource,Resource> componentTypeAndRoot, Resource literal, String possibleExpectedValueType) {
  56                 assert(literal != null);
  57                 this.context = context;
  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(context, getComponentTypeAndRoot(graph, context), context.getRepresents(graph), resolveExpectedValueType(graph, context));
  65         }
  66
  67         private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Variable property)  throws DatabaseException {
  68                 Variable parent = property.getParent(graph);
  69                 Resource represents = parent.getRepresents(graph);
  70                 if(represents != null) {
  71                         Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(represents));
  72                         if(type != null) {
  73                                 Resource root = graph.syncRequest(new IndexRoot(type));
  74                                 return Pair.make(type, root);
  75                         }
  76                 }
  77                 parent = parent.getParent(graph);
  78                 Resource root = graph.syncRequest(new IndexRoot(property.getRepresents(graph)));
  79                 return Pair.make(parent.getType(graph), root);
  80         }
  81
  82
  83     public static List<TCon> getEffects(ReadGraph graph, Variable context) throws DatabaseException {
  84         try {
  85                 ServerSCLHandlerValueRequest req = new ServerSCLHandlerValueRequest(graph, context);
  86                 return req.getExpressionEffects(graph);
  87         } catch (DatabaseException e) {
  88             throw (DatabaseException)e;
  89         } catch (Throwable t) {
  90             throw new DatabaseException(t);
  91         }
  92     }
  93
  94         public static Object compileAndEvaluate(ReadGraph graph, Variable context) throws DatabaseException {
  95                 SCLContext sclContext = SCLContext.getCurrent();
  96         Object oldGraph = sclContext.get("graph");
  97                 try {
  98                         Function1<Variable,Object> exp = graph.syncRequest(new ServerSCLHandlerValueRequest(graph, context),
  99                                         TransientCacheListener.<Function1<Variable,Object>>instance());
 100                         sclContext.put("graph", graph);
 101                         return exp.apply(context);
 102                 } catch (DatabaseException e) {
 103                         throw (DatabaseException)e;
 104                 } catch (Throwable t) {
 105                         throw new DatabaseException(t);
 106                 } finally {
 107             sclContext.put("graph", oldGraph);
 108                 }
 109         }
 110
 111         @Override
 112         protected String getExpressionText(ReadGraph graph)
 113                         throws DatabaseException {
 114                 Layer0 L0 = Layer0.getInstance(graph);
 115                 String exp = graph.getRelatedValue(literal, L0.SCLValue_expression, Bindings.STRING);
 116                 return "\\context -> " + exp;
 117         }
 118
 119         protected RuntimeEnvironmentRequest2 getRuntimeEnvironmentRequest(Resource componentType, Resource indexRoot) {
 120                 return new RuntimeEnvironmentRequest2(componentType, indexRoot) {
 121                         @Override
 122                         protected void fillEnvironmentSpecification(
 123                                         EnvironmentSpecification environmentSpecification) {
 124                         }
 125                 };
 126         }
 127
 128         @Override
 129         protected CompilationContext getCompilationContext(ReadGraph graph) throws DatabaseException {
 130
 131                 return graph.syncRequest(new VariableRead<CompilationContext>(context) {
 132
 133                         @Override
 134                         public CompilationContext perform(ReadGraph graph) throws DatabaseException {
 135
 136                                 Pair<Resource,Resource> parameter = getComponentTypeAndRoot(graph, variable);
 137                                 RuntimeEnvironment runtimeEnvironment = graph.syncRequest(getRuntimeEnvironmentRequest(parameter.first, parameter.second));
 138
 139                                 Map<String, ComponentTypeProperty> propertyMap =
 140                                                 graph.syncRequest(new ReadComponentTypeInterfaceRequest(parameter.first, runtimeEnvironment.getEnvironment()),
 141                                                                 TransientCacheListener.<Map<String, ComponentTypeProperty>>instance());
 142
 143 //                              Map<String, ComponentTypeProperty> result = new HashMap<String,ComponentTypeProperty>(propertyMap);
 144 //                              for(DataDefinition dd : Functions.dataDefinitions(graph, variable)) {
 145 //                                      result.put(dd.target, null);
 146 //                              }
 147
 148                                 return new CompilationContext(runtimeEnvironment, propertyMap);
 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                 final int prime = 31;
 233                 int result = 1;
 234                 result = prime * result + ((context == null) ? 0 : context.hashCode());
 235                 return result;
 236         }
 237
 238         @Override
 239         public boolean equals(Object obj) {
 240                 if (this == obj)
 241                         return true;
 242                 if (obj == null)
 243                         return false;
 244                 if (getClass() != obj.getClass())
 245                         return false;
 246                 ServerSCLHandlerValueRequest other = (ServerSCLHandlerValueRequest) obj;
 247                 if (context == null) {
 248                         if (other.context != null)
 249                                 return false;
 250                 } else if (!context.equals(other.context))
 251                         return false;
 252                 return true;
 253         }
 254
 255 //      @Override
 256 //      public int hashCode() {
 257 //              return 31*(31*getClass().hashCode() + literal.hashCode()) + componentTypeAndRoot.hashCode();
 258 //      }
 259 //
 260 //      @Override
 261 //      public boolean equals(Object obj) {
 262 //              if(this == obj)
 263 //                      return true;
 264 //              if(obj == null || obj.getClass() != getClass())
 265 //                      return false;
 266 //              ServerSCLHandlerValueRequest other = (ServerSCLHandlerValueRequest)obj;
 267 //              return literal.equals(other.literal) && componentTypeAndRoot.equals(other.componentTypeAndRoot);
 268 //      }
 269
 270 }