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 root = graph.syncRequest(new IndexRoot(property.getRepresents(graph)));
  86                 return Pair.make(parent.getType(graph), root);
  87         }
  88
  89     public static List<TCon> getEffects(ReadGraph graph, Variable context) throws DatabaseException {
  90         try {
  91                 ServerSCLHandlerValueRequest req = new ServerSCLHandlerValueRequest(graph, context);
  92                 return req.getExpressionEffects(graph);
  93         } catch (DatabaseException e) {
  94             throw (DatabaseException)e;
  95         } catch (Throwable t) {
  96             throw new DatabaseException(t);
  97         }
  98     }
  99
 100         public static Object compileAndEvaluate(ReadGraph graph, Variable context) throws DatabaseException {
 101                 SCLContext sclContext = SCLContext.getCurrent();
 102         Object oldGraph = sclContext.get("graph");
 103                 try {
 104                         Function1<Variable,Object> exp = graph.syncRequest(new ServerSCLHandlerValueRequest(graph, context),
 105                                         TransientCacheListener.<Function1<Variable,Object>>instance());
 106                         sclContext.put("graph", graph);
 107                         return exp.apply(context);
 108                 } catch (DatabaseException e) {
 109                         throw (DatabaseException)e;
 110                 } catch (Throwable t) {
 111                         throw new DatabaseException(t);
 112                 } finally {
 113             sclContext.put("graph", oldGraph);
 114                 }
 115         }
 116
 117         @Override
 118         protected String getExpressionText(ReadGraph graph)
 119                         throws DatabaseException {
 120                 Layer0 L0 = Layer0.getInstance(graph);
 121                 String exp = graph.getRelatedValue(literal, L0.SCLValue_expression, Bindings.STRING);
 122                 return "\\context -> " + exp;
 123         }
 124
 125         protected RuntimeEnvironmentRequest2 getRuntimeEnvironmentRequest(Resource componentType, Resource indexRoot) {
 126                 return new RuntimeEnvironmentRequest2(componentType, indexRoot) {
 127                         @Override
 128                         protected void fillEnvironmentSpecification(
 129                                         EnvironmentSpecification environmentSpecification) {
 130                         }
 131                 };
 132         }
 133
 134         @Override
 135         protected CompilationContext getCompilationContext(ReadGraph graph) throws DatabaseException {
 136
 137                 return graph.syncRequest(new UnaryRead<Pair<Resource,Resource>,CompilationContext>(componentTypeAndRoot) {
 138
 139                         @Override
 140                         public CompilationContext perform(ReadGraph graph) throws DatabaseException {
 141
 142                                 RuntimeEnvironment runtimeEnvironment = graph.syncRequest(getRuntimeEnvironmentRequest(parameter.first, parameter.second));
 143                                 Map<String, ComponentTypeProperty> propertyMap =
 144                                                 graph.syncRequest(new ReadComponentTypeInterfaceRequest(parameter.first, runtimeEnvironment.getEnvironment()),
 145                                                                 TransientCacheListener.<Map<String, ComponentTypeProperty>>instance());
 146                                 return new CompilationContext(runtimeEnvironment, propertyMap);
 147
 148
 149                         }
 150
 151                 });
 152
 153         }
 154
 155         @Override
 156         protected Type getContextVariableType() {
 157                 return VARIABLE;
 158         }
 159
 160         private static Expression accessInputVariable(Environment environment,
 161                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable) {
 162                 SCLValue variableParentFunction = environment.getValue(VARIABLE_PARENT);
 163                 return new EApply(new EConstant(variableParentFunction),
 164                                 new EApply(new EConstant(variableParentFunction),
 165                                                 new EVariable(contextVariable)));
 166         }
 167
 168         protected static Expression standardGetProperty(
 169                         Environment environment,
 170                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 171                         String name,
 172                         Type type) {
 173                 return getPropertyFlexible(environment, accessInputVariable(environment, contextVariable), name, type);
 174         }
 175
 176         @Override
 177         protected Expression getVariableAccessExpression(
 178                         ReadGraph graph,
 179                         CompilationContext context,
 180                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 181                         String name) throws DatabaseException {
 182                 ComponentTypeProperty property = context.propertyMap.get(name);
 183                 if(property != null)
 184                         return standardGetProperty(
 185                                         context.runtimeEnvironment.getEnvironment(),
 186                                         contextVariable,
 187                                         name,
 188                                         property.type == null ? Types.metaVar(Kinds.STAR) : property.type);
 189                 else {
 190
 191 //                      if(context.propertyMap.containsKey(name)) {
 192 //
 193 //                              org.simantics.scl.compiler.elaboration.expressions.Variable parametersVariable = new org.simantics.scl.compiler.elaboration.expressions.Variable("context", COMMAND_CONTEXT);
 194 //
 195 //                              Environment environment = context.runtimeEnvironment.getEnvironment();
 196 //
 197 ////                            return new EApply(
 198 ////                            new EConstant(environment.getValue(FROM_DYNAMIC), Types.STRING),
 199 //                              return new EApply(
 200 //                                      new EConstant(environment.getValue(CONTEXT_VARIABLE), Types.DYNAMIC),
 201 //                                      new EVariable(parametersVariable),
 202 //                                      new ELiteral(new StringConstant(name)));
 203 //
 204 //                      }
 205
 206                         return getSpecialVariableAccessExpression(graph, context, contextVariable, name);
 207
 208                 }
 209         }
 210
 211         protected Expression getSpecialVariableAccessExpression(ReadGraph graph,
 212                         CompilationContext context,
 213                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 214                         String name) throws DatabaseException {
 215                 if(name.equals("input")) {
 216                         Environment environment = context.runtimeEnvironment.getEnvironment();
 217                         return accessInputVariable(environment, contextVariable);
 218                 } else if(name.equals("self"))
 219                         return new EVariable(contextVariable);
 220                 else
 221                         return null;
 222         }
 223
 224     @Override
 225     protected Type getExpectedType(ReadGraph graph, CompilationContext context) throws DatabaseException {
 226         return super.getExpectedType(graph, context);
 227     }
 228
 229         @Override
 230         public int hashCode() {
 231                 return 31*(31*getClass().hashCode() + literal.hashCode()) + componentTypeAndRoot.hashCode();
 232         }
 233
 234         @Override
 235         public boolean equals(Object obj) {
 236                 if (this == obj)
 237                         return true;
 238                 if (obj == null)
 239                         return false;
 240                 if (getClass() != obj.getClass())
 241                         return false;
 242                 ServerSCLHandlerValueRequest other = (ServerSCLHandlerValueRequest) obj;
 243                 return literal.equals(other.literal) && componentTypeAndRoot.equals(other.componentTypeAndRoot);
 244         }
 245
 246         private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Resource component)  throws DatabaseException {
 247                 if(component != null) {
 248                         Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(component));
 249                         if(type != null) {
 250                                 Resource root = graph.syncRequest(new IndexRoot(type));
 251                                 return Pair.make(type, root);
 252                         } else {
 253                                 Resource doc = graph.syncRequest(new PossibleTypedParent(component, DocumentationResource.getInstance(graph).Document));
 254                                 Resource root = graph.syncRequest(new IndexRoot(component));
 255                                 return Pair.make(graph.getSingleType(doc), root);
 256                         }
 257                 }
 258                 throw new IllegalStateException();
 259         }
 260
 261 }