gerrit.simantics Code Review - simantics/platform.git/blob

   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.Environments;
  26 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;
  27 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
  28 import org.simantics.scl.compiler.top.SCLExpressionCompilationException;
  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 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 public class ServerSCLHandlerValueRequest extends AbstractExpressionCompilationRequest<CompilationContext, Variable> {
  43
  44     private static final Logger LOGGER = LoggerFactory.getLogger(ServerSCLHandlerValueRequest.class);
  45
  46         private final Variable context;
  47         private final Pair<Resource,Resource> componentTypeAndRoot;
  48         private final Resource literal;
  49         protected String possibleExpectedValueType;
  50
  51         public static class CompilationContext extends AbstractExpressionCompilationContext {
  52                 public final Map<String, ComponentTypeProperty> propertyMap;
  53
  54                 public CompilationContext(RuntimeEnvironment runtimeEnvironment,
  55                                 Map<String, ComponentTypeProperty> propertyMap) {
  56                         super(runtimeEnvironment);
  57                         this.propertyMap = propertyMap;
  58                 }
  59         }
  60
  61         private ServerSCLHandlerValueRequest(Variable context, Pair<Resource,Resource> componentTypeAndRoot, Resource literal, String possibleExpectedValueType) {
  62                 assert(literal != null);
  63                 this.context = context;
  64                 this.literal = literal;
  65                 this.componentTypeAndRoot = componentTypeAndRoot;
  66                 this.possibleExpectedValueType = possibleExpectedValueType;
  67         }
  68
  69         public ServerSCLHandlerValueRequest(ReadGraph graph, Variable context) throws DatabaseException {
  70                 this(context, getComponentTypeAndRoot(graph, context), context.getRepresents(graph), resolveExpectedValueType(graph, context));
  71         }
  72
  73         private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Variable property)  throws DatabaseException {
  74                 Variable parent = property.getParent(graph);
  75                 Resource represents = parent.getRepresents(graph);
  76                 if(represents != null) {
  77                         Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(represents));
  78                         if(type != null) {
  79                                 Resource root = graph.syncRequest(new IndexRoot(type));
  80                                 return Pair.make(type, root);
  81                         }
  82                 }
  83                 parent = parent.getParent(graph);
  84                 Resource root = graph.syncRequest(new IndexRoot(property.getRepresents(graph)));
  85                 return Pair.make(parent.getType(graph), root);
  86         }
  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 VariableRead<CompilationContext>(context) {
 138
 139                         @Override
 140                         public CompilationContext perform(ReadGraph graph) throws DatabaseException {
 141
 142                                 Pair<Resource,Resource> parameter = getComponentTypeAndRoot(graph, variable);
 143                                 RuntimeEnvironment runtimeEnvironment = graph.syncRequest(getRuntimeEnvironmentRequest(parameter.first, parameter.second));
 144
 145                                 Map<String, ComponentTypeProperty> propertyMap =
 146                                                 graph.syncRequest(new ReadComponentTypeInterfaceRequest(parameter.first, runtimeEnvironment.getEnvironment()),
 147                                                                 TransientCacheListener.<Map<String, ComponentTypeProperty>>instance());
 148
 149 //                              Map<String, ComponentTypeProperty> result = new HashMap<String,ComponentTypeProperty>(propertyMap);
 150 //                              for(DataDefinition dd : Functions.dataDefinitions(graph, variable)) {
 151 //                                      result.put(dd.target, null);
 152 //                              }
 153
 154                                 return new CompilationContext(runtimeEnvironment, propertyMap);
 155
 156                         }
 157
 158                 });
 159
 160         }
 161
 162         @Override
 163         protected Type getContextVariableType() {
 164                 return VARIABLE;
 165         }
 166
 167         private static Expression accessInputVariable(Environment environment,
 168                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable) {
 169                 SCLValue variableParentFunction = environment.getValue(VARIABLE_PARENT);
 170                 return new EApply(new EConstant(variableParentFunction),
 171                                 new EApply(new EConstant(variableParentFunction),
 172                                                 new EVariable(contextVariable)));
 173         }
 174
 175         protected static Expression standardGetProperty(
 176                         Environment environment,
 177                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 178                         String name,
 179                         Type type) {
 180                 return getPropertyFlexible(environment, accessInputVariable(environment, contextVariable), name, type);
 181         }
 182
 183         @Override
 184         protected Expression getVariableAccessExpression(
 185                         ReadGraph graph,
 186                         CompilationContext context,
 187                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 188                         String name) throws DatabaseException {
 189                 ComponentTypeProperty property = context.propertyMap.get(name);
 190                 if(property != null)
 191                         return standardGetProperty(
 192                                         context.runtimeEnvironment.getEnvironment(),
 193                                         contextVariable,
 194                                         name,
 195                                         property.type == null ? Types.metaVar(Kinds.STAR) : property.type);
 196                 else {
 197
 198 //                      if(context.propertyMap.containsKey(name)) {
 199 //
 200 //                              org.simantics.scl.compiler.elaboration.expressions.Variable parametersVariable = new org.simantics.scl.compiler.elaboration.expressions.Variable("context", COMMAND_CONTEXT);
 201 //
 202 //                              Environment environment = context.runtimeEnvironment.getEnvironment();
 203 //
 204 ////                            return new EApply(
 205 ////                            new EConstant(environment.getValue(FROM_DYNAMIC), Types.STRING),
 206 //                              return new EApply(
 207 //                                      new EConstant(environment.getValue(CONTEXT_VARIABLE), Types.DYNAMIC),
 208 //                                      new EVariable(parametersVariable),
 209 //                                      new ELiteral(new StringConstant(name)));
 210 //
 211 //                      }
 212
 213                         return getSpecialVariableAccessExpression(graph, context, contextVariable, name);
 214
 215                 }
 216         }
 217
 218         protected Expression getSpecialVariableAccessExpression(ReadGraph graph,
 219                         CompilationContext context,
 220                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 221                         String name) throws DatabaseException {
 222                 if(name.equals("input")) {
 223                         Environment environment = context.runtimeEnvironment.getEnvironment();
 224                         return accessInputVariable(environment, contextVariable);
 225                 } else if(name.equals("self"))
 226                         return new EVariable(contextVariable);
 227                 else
 228                         return null;
 229         }
 230
 231     @Override
 232     protected Type getExpectedType(ReadGraph graph, CompilationContext context) throws DatabaseException {
 233         if(possibleExpectedValueType != null) {
 234             try {
 235                 return Environments.getType(context.runtimeEnvironment.getEnvironment(), possibleExpectedValueType);
 236             } catch (SCLExpressionCompilationException e) {
 237                 LOGGER.error("Could not get type for " + String.valueOf(possibleExpectedValueType), e);
 238             }
 239         }
 240         return super.getExpectedType(graph, context);
 241     }
 242
 243
 244         @Override
 245         public int hashCode() {
 246                 final int prime = 31;
 247                 int result = 1;
 248                 result = prime * result + ((context == null) ? 0 : context.hashCode());
 249                 return result;
 250         }
 251
 252         @Override
 253         public boolean equals(Object obj) {
 254                 if (this == obj)
 255                         return true;
 256                 if (obj == null)
 257                         return false;
 258                 if (getClass() != obj.getClass())
 259                         return false;
 260                 ServerSCLHandlerValueRequest other = (ServerSCLHandlerValueRequest) obj;
 261                 if (context == null) {
 262                         if (other.context != null)
 263                                 return false;
 264                 } else if (!context.equals(other.context))
 265                         return false;
 266                 return true;
 267         }
 268
 269 //      @Override
 270 //      public int hashCode() {
 271 //              return 31*(31*getClass().hashCode() + literal.hashCode()) + componentTypeAndRoot.hashCode();
 272 //      }
 273 //
 274 //      @Override
 275 //      public boolean equals(Object obj) {
 276 //              if(this == obj)
 277 //                      return true;
 278 //              if(obj == null || obj.getClass() != getClass())
 279 //                      return false;
 280 //              ServerSCLHandlerValueRequest other = (ServerSCLHandlerValueRequest)obj;
 281 //              return literal.equals(other.literal) && componentTypeAndRoot.equals(other.componentTypeAndRoot);
 282 //      }
 283
 284 }