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

   1 package org.simantics.document.server.request;\r
   2 \r
   3 import java.util.Map;\r
   4 \r
   5 import org.simantics.databoard.Bindings;\r
   6 import org.simantics.db.ReadGraph;\r
   7 import org.simantics.db.Resource;\r
   8 import org.simantics.db.common.procedure.adapter.TransientCacheListener;\r
   9 import org.simantics.db.common.request.IndexRoot;\r
  10 import org.simantics.db.common.request.UnaryRead;\r
  11 import org.simantics.db.exception.DatabaseException;\r
  12 import org.simantics.db.layer0.scl.AbstractExpressionCompilationContext;\r
  13 import org.simantics.db.layer0.scl.AbstractExpressionCompilationRequest;\r
  14 import org.simantics.db.layer0.util.RuntimeEnvironmentRequest;\r
  15 import org.simantics.db.layer0.variable.Variable;\r
  16 import org.simantics.document.server.request.ServerSCLValueRequest.CompilationContext;\r
  17 import org.simantics.layer0.Layer0;\r
  18 import org.simantics.scl.compiler.common.names.Name;\r
  19 import org.simantics.scl.compiler.constants.StringConstant;\r
  20 import org.simantics.scl.compiler.elaboration.expressions.EApply;\r
  21 import org.simantics.scl.compiler.elaboration.expressions.EConstant;\r
  22 import org.simantics.scl.compiler.elaboration.expressions.ELiteral;\r
  23 import org.simantics.scl.compiler.elaboration.expressions.EVariable;\r
  24 import org.simantics.scl.compiler.elaboration.expressions.Expression;\r
  25 import org.simantics.scl.compiler.elaboration.modules.SCLValue;\r
  26 import org.simantics.scl.compiler.environment.Environment;\r
  27 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;\r
  28 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;\r
  29 import org.simantics.scl.compiler.types.Type;\r
  30 import org.simantics.scl.compiler.types.Types;\r
  31 import org.simantics.scl.compiler.types.kinds.Kinds;\r
  32 import org.simantics.scl.runtime.SCLContext;\r
  33 import org.simantics.scl.runtime.function.Function1;\r
  34 import org.simantics.structural2.scl.ComponentTypeProperty;\r
  35 import org.simantics.structural2.scl.FindPossibleComponentTypeRequest;\r
  36 import org.simantics.structural2.scl.ReadComponentTypeInterfaceRequest;\r
  37 import org.simantics.utils.datastructures.Pair;\r
  38 \r
  39 public class ServerSCLValueRequest extends AbstractExpressionCompilationRequest<CompilationContext, Variable> {\r
  40 \r
  41         private final Pair<Resource,Resource> componentTypeAndRoot;\r
  42         private final Resource literal;\r
  43 \r
  44         public static class CompilationContext extends AbstractExpressionCompilationContext {\r
  45                 public final Map<String, ComponentTypeProperty> propertyMap;\r
  46 \r
  47                 public CompilationContext(RuntimeEnvironment runtimeEnvironment,\r
  48                                 Map<String, ComponentTypeProperty> propertyMap) {\r
  49                         super(runtimeEnvironment);\r
  50                         this.propertyMap = propertyMap;\r
  51                 }\r
  52         }\r
  53 \r
  54         private ServerSCLValueRequest(Pair<Resource,Resource> componentTypeAndRoot, Resource literal) {\r
  55                 assert(literal != null);\r
  56                 this.literal = literal;\r
  57                 this.componentTypeAndRoot = componentTypeAndRoot;\r
  58         }\r
  59 \r
  60         public ServerSCLValueRequest(ReadGraph graph, Variable context) throws DatabaseException {\r
  61                 this(getComponentTypeAndRoot(graph, context), context.getRepresents(graph));\r
  62         }\r
  63 \r
  64         private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Variable property)  throws DatabaseException {\r
  65                 Variable parent = property.getParent(graph);\r
  66                 Resource represents = parent.getRepresents(graph);\r
  67                 if(represents != null) {\r
  68                         Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(represents));\r
  69                         if(type != null) {\r
  70                                 Resource root = graph.syncRequest(new IndexRoot(type));\r
  71                                 return Pair.make(type, root);\r
  72                         }\r
  73                 }\r
  74                 parent = parent.getParent(graph);\r
  75                 Resource root = graph.syncRequest(new IndexRoot(property.getRepresents(graph)));\r
  76                 return Pair.make(parent.getType(graph), root);\r
  77         }\r
  78 \r
  79         public static Object compileAndEvaluate(ReadGraph graph, Variable context) throws DatabaseException {\r
  80                 SCLContext sclContext = SCLContext.getCurrent();\r
  81         Object oldGraph = sclContext.get("graph");\r
  82                 try {\r
  83                         Function1<Variable,Object> exp = graph.syncRequest(new ServerSCLValueRequest(graph, context),\r
  84                                         TransientCacheListener.<Function1<Variable,Object>>instance());\r
  85                         sclContext.put("graph", graph);\r
  86                         return exp.apply(context);\r
  87                 } catch (DatabaseException e) {\r
  88                         throw (DatabaseException)e;\r
  89                 } catch (Throwable t) {\r
  90                         throw new DatabaseException(t);\r
  91                 } finally {\r
  92             sclContext.put("graph", oldGraph);\r
  93                 }\r
  94         }\r
  95 \r
  96         @Override\r
  97         protected String getExpressionText(ReadGraph graph)\r
  98                         throws DatabaseException {\r
  99                 Layer0 L0 = Layer0.getInstance(graph);\r
 100                 return graph.getRelatedValue(literal, L0.SCLValue_expression, Bindings.STRING);\r
 101         }\r
 102 \r
 103         protected RuntimeEnvironmentRequest getRuntimeEnvironmentRequest(Resource indexRoot) {\r
 104                 return new RuntimeEnvironmentRequest(indexRoot) {\r
 105                         @Override\r
 106                         protected void fillEnvironmentSpecification(\r
 107                                         EnvironmentSpecification environmentSpecification) {\r
 108                         }\r
 109                 };\r
 110         }\r
 111 \r
 112         @Override\r
 113         protected CompilationContext getCompilationContext(ReadGraph graph)\r
 114                         throws DatabaseException {\r
 115                 return graph.syncRequest(new UnaryRead<Pair<Resource,Resource>,CompilationContext>(componentTypeAndRoot) {\r
 116                         @Override\r
 117                         public CompilationContext perform(ReadGraph graph)\r
 118                                         throws DatabaseException {\r
 119                                 RuntimeEnvironment runtimeEnvironment = graph.syncRequest(getRuntimeEnvironmentRequest(parameter.second));\r
 120                                 Map<String, ComponentTypeProperty> propertyMap =\r
 121                                                 graph.syncRequest(new ReadComponentTypeInterfaceRequest(parameter.first, runtimeEnvironment.getEnvironment()),\r
 122                                                                 TransientCacheListener.<Map<String, ComponentTypeProperty>>instance());\r
 123                                 return new CompilationContext(runtimeEnvironment, propertyMap);\r
 124                         }\r
 125                 });\r
 126         }\r
 127 \r
 128         @Override\r
 129         protected Type getContextVariableType() {\r
 130                 return VARIABLE; \r
 131         }\r
 132 \r
 133         private static Expression accessInputVariable(Environment environment,\r
 134                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable) {\r
 135                 SCLValue variableParentFunction = environment.getValue(VARIABLE_PARENT);\r
 136                 return new EApply(new EConstant(variableParentFunction),\r
 137                                 new EApply(new EConstant(variableParentFunction),\r
 138                                                 new EVariable(contextVariable)));\r
 139         }\r
 140 \r
 141     protected static Name PROPERTY_VALUE_CACHED = Name.create("Document/All", "propertyValueCached");\r
 142 \r
 143     protected static Expression getProperty(Environment environment, Expression variable, String propertyName, Type type) {\r
 144         return new EApply(\r
 145                 new EConstant(environment.getValue(FROM_DYNAMIC), type),\r
 146                 new EApply(\r
 147                         new EConstant(environment.getValue(PROPERTY_VALUE_CACHED), Types.DYNAMIC),\r
 148                         variable,\r
 149                         new ELiteral(new StringConstant(propertyName))));\r
 150     }\r
 151     \r
 152     protected static Expression getPropertyFlexible(Environment environment, Expression variable, String propertyName, Type type) {\r
 153         return makeTypeFlexible(environment, getProperty(environment, variable, propertyName, type), type);\r
 154     }\r
 155         \r
 156         protected static Expression standardGetProperty(\r
 157                         Environment environment,\r
 158                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,\r
 159                         String name,\r
 160                         Type type) {\r
 161                 return getPropertyFlexible(environment, accessInputVariable(environment, contextVariable), name, type);\r
 162         }\r
 163 \r
 164 \r
 165         @Override\r
 166         protected Expression getVariableAccessExpression(\r
 167                         ReadGraph graph,\r
 168                         CompilationContext context,\r
 169                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,\r
 170                         String name) throws DatabaseException {\r
 171                 ComponentTypeProperty property = context.propertyMap.get(name);\r
 172                 if(property != null)\r
 173                         return standardGetProperty(\r
 174                                         context.runtimeEnvironment.getEnvironment(),\r
 175                                         contextVariable,\r
 176                                         name,\r
 177                                         property.type == null ? Types.metaVar(Kinds.STAR) : property.type);\r
 178                 else\r
 179                         return getSpecialVariableAccessExpression(graph, context, contextVariable, name);\r
 180         }\r
 181 \r
 182         protected Expression getSpecialVariableAccessExpression(ReadGraph graph,\r
 183                         CompilationContext context,\r
 184                         org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,\r
 185                         String name) throws DatabaseException {\r
 186                 if(name.equals("input")) {\r
 187                         Environment environment = context.runtimeEnvironment.getEnvironment();\r
 188                         return accessInputVariable(environment, contextVariable);\r
 189                 }\r
 190                 else if(name.equals("self"))\r
 191                         return new EVariable(contextVariable);\r
 192                 else\r
 193                         return null;\r
 194         }\r
 195 \r
 196         @Override\r
 197         public int hashCode() {\r
 198                 return 31*(31*getClass().hashCode() + literal.hashCode()) + componentTypeAndRoot.hashCode();\r
 199         }\r
 200 \r
 201         @Override\r
 202         public boolean equals(Object obj) {\r
 203                 if(this == obj)\r
 204                         return true;\r
 205                 if(obj == null || obj.getClass() != getClass())\r
 206                         return false;\r
 207                 ServerSCLValueRequest other = (ServerSCLValueRequest)obj;\r
 208                 return literal.equals(other.literal) && componentTypeAndRoot.equals(other.componentTypeAndRoot);\r
 209         }\r
 210 }\r