bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/relations/SpecialCHRRelation.java

   1 package org.simantics.scl.compiler.elaboration.chr.relations;
   2
   3 import org.simantics.scl.compiler.elaboration.chr.CHRRelation;
   4 import org.simantics.scl.compiler.types.TPred;
   5 import org.simantics.scl.compiler.types.TVar;
   6 import org.simantics.scl.compiler.types.Type;
   7 import org.simantics.scl.compiler.types.Types;
   8
   9 public enum SpecialCHRRelation implements CHRRelation {
  10     EQUALS(A, A),
  11     MEMBER(A, Types.list(A)),
  12     CHECK(Types.BOOLEAN),
  13     EXECUTE(Types.UNIT);
  14
  15     private final TVar[] typeVariables;
  16     private final Type[] parameterTypes;
  17
  18     private SpecialCHRRelation(Type ... parameterTypes) {
  19         this.typeVariables = Types.freeVarsArray(parameterTypes);
  20         this.parameterTypes = parameterTypes;
  21     }
  22
  23     @Override
  24     public TVar[] getTypeVariables() {
  25         return typeVariables;
  26     }
  27
  28     @Override
  29     public Type[] getParameterTypes() {
  30         return parameterTypes;
  31     }
  32
  33     public TPred[] getTypeConstraints() {
  34         return TPred.EMPTY_ARRAY;
  35     }
  36 }