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

   1 package org.simantics.modeling.scl;
   2
   3 import gnu.trove.map.hash.THashMap;
   4
   5 import org.simantics.databoard.Bindings;
   6 import org.simantics.db.ReadGraph;
   7 import org.simantics.db.Resource;
   8 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
   9 import org.simantics.db.common.request.IndexRoot;
  10 import org.simantics.db.exception.DatabaseException;
  11 import org.simantics.db.layer0.request.VariableRead;
  12 import org.simantics.db.layer0.scl.AbstractExpressionCompilationContext;
  13 import org.simantics.db.layer0.scl.AbstractExpressionCompilationRequest;
  14 import org.simantics.db.layer0.util.RuntimeEnvironmentRequest;
  15 import org.simantics.db.layer0.variable.Variable;
  16 import org.simantics.layer0.Layer0;
  17 import org.simantics.modeling.ProceduralSubstructureMapRequest;
  18 import org.simantics.modeling.scl.CompileProceduralSCLMonitorRequest.CompilationContext;
  19 import org.simantics.scl.compiler.common.names.Name;
  20 import org.simantics.scl.compiler.constants.StringConstant;
  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.ELiteral;
  24 import org.simantics.scl.compiler.elaboration.expressions.EVariable;
  25 import org.simantics.scl.compiler.elaboration.expressions.Expression;
  26 import org.simantics.scl.compiler.environment.Environment;
  27 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
  28 import org.simantics.scl.compiler.types.Type;
  29 import org.simantics.scl.runtime.SCLContext;
  30 import org.simantics.scl.runtime.function.Function1;
  31 import org.simantics.utils.datastructures.Pair;
  32
  33 public class CompileProceduralSCLMonitorRequest extends AbstractExpressionCompilationRequest<CompilationContext, Variable> {
  34
  35     protected static Name BROWSE = Name.create("Simantics/Variables", "browse");
  36     protected static Name VALUE = Name.create("Simantics/Variables", "value");
  37
  38     private final Resource componentType;
  39     private final Resource literal;
  40     private final Variable componentVariable;
  41
  42     public static class CompilationContext extends AbstractExpressionCompilationContext {
  43         public final THashMap<String, Pair<String,Type>> propertyMap;
  44
  45         public CompilationContext(RuntimeEnvironment runtimeEnvironment,
  46                 THashMap<String, Pair<String,Type>> propertyMap) {
  47             super(runtimeEnvironment);
  48             this.propertyMap = propertyMap;
  49         }
  50     }
  51
  52     public CompileProceduralSCLMonitorRequest(ReadGraph graph, Variable context)
  53             throws DatabaseException {
  54         this.componentType = context.getParent(graph).getType(graph);
  55         this.literal = context.getRepresents(graph);
  56         this.componentVariable = context.getParent(graph);
  57     }
  58
  59     public static Object compileAndEvaluate(ReadGraph graph, Variable context) throws DatabaseException {
  60         SCLContext sclContext = SCLContext.getCurrent();
  61         Object oldGraph = sclContext.get("graph");
  62         try {
  63             Function1<Variable,Object> exp = graph.syncRequest(new CompileProceduralSCLMonitorRequest(graph, context),
  64                     TransientCacheListener.<Function1<Variable,Object>>instance());
  65             sclContext.put("graph", graph);
  66             return exp.apply(context.getParent(graph));
  67         } catch (DatabaseException e) {
  68             throw (DatabaseException)e;
  69         } catch (Throwable t) {
  70             throw new DatabaseException(t);
  71         } finally {
  72             sclContext.put("graph", oldGraph);
  73         }
  74     }
  75
  76     @Override
  77     protected String getExpressionText(ReadGraph graph)
  78             throws DatabaseException {
  79         Layer0 L0 = Layer0.getInstance(graph);
  80         return graph.getRelatedValue(literal, L0.SCLValue_expression, Bindings.STRING);
  81     }
  82
  83     @Override
  84     protected CompilationContext getCompilationContext(ReadGraph graph)
  85             throws DatabaseException {
  86         return graph.syncRequest(new VariableRead<CompilationContext>(componentVariable) {
  87             @Override
  88             public CompilationContext perform(ReadGraph graph)
  89                     throws DatabaseException {
  90                 Resource indexRoot = graph.syncRequest(new IndexRoot(componentType));
  91                 RuntimeEnvironment runtimeEnvironment = graph.syncRequest(new RuntimeEnvironmentRequest(indexRoot));
  92                 THashMap<String, Pair<String,Type>> propertyMap =
  93                         graph.sync(new ProceduralSubstructureMapRequest(componentVariable));
  94                 return new CompilationContext(runtimeEnvironment, propertyMap);
  95             }
  96         });
  97     }
  98
  99     @Override
 100     protected Type getContextVariableType() {
 101         return VARIABLE;
 102     }
 103
 104     @Override
 105     protected Expression getVariableAccessExpression(
 106             ReadGraph graph,
 107             CompilationContext context,
 108             org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
 109             String name) throws DatabaseException {
 110         Pair<String,Type> entry = context.propertyMap.get(name);
 111         if(entry == null)
 112             return null;
 113         Environment environment = context.runtimeEnvironment.getEnvironment();
 114         Expression propertyVariable = new EApply(
 115                 new EConstant(environment.getValue(BROWSE)),
 116                 new EVariable(contextVariable),
 117                 new ELiteral(new StringConstant(entry.first))
 118                 );
 119         return new EApply(
 120                 new EConstant(environment.getValue(VALUE), entry.second),
 121                 propertyVariable
 122                 );
 123     }
 124
 125     @Override
 126     public int hashCode() {
 127         return 31*componentVariable.hashCode() + literal.hashCode();
 128     }
 129
 130     @Override
 131     public boolean equals(Object obj) {
 132         if(this == obj)
 133             return true;
 134         if(obj == null || obj.getClass() != getClass())
 135             return false;
 136         CompileProceduralSCLMonitorRequest other = (CompileProceduralSCLMonitorRequest)obj;
 137         return literal.equals(other.literal) && componentVariable.equals(other.componentVariable);
 138     }
 139 }
 140