bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/list/ListGuard.java

   1 package org.simantics.scl.compiler.elaboration.expressions.list;
   2
   3 import org.simantics.scl.compiler.elaboration.contexts.SimplificationContext;
   4 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
   5 import org.simantics.scl.compiler.elaboration.contexts.TypingContext;
   6 import org.simantics.scl.compiler.elaboration.expressions.Expression;
   7 import org.simantics.scl.compiler.errors.Locations;
   8 import org.simantics.scl.compiler.types.Types;
   9
  10 public class ListGuard extends ListQualifier {
  11     public Expression condition;
  12
  13     public ListGuard(Expression condition) {
  14         this.condition = condition;
  15     }
  16
  17     @Override
  18     public void checkType(TypingContext context) {
  19         condition.checkType(context, Types.BOOLEAN);
  20     }
  21
  22     @Override
  23     public CompiledQualifier compile(SimplificationContext context) {
  24         return new CompiledQualifier(
  25                 context.guardList(condition.copy()),
  26                 context.tuple());
  27     }
  28
  29     @Override
  30     public void resolve(TranslationContext context) {
  31         condition = condition.resolve(context);
  32     }
  33
  34     @Override
  35     public void setLocationDeep(long loc) {
  36         if(location == Locations.NO_LOCATION) {
  37             location = loc;
  38             condition.setLocationDeep(loc);
  39         }
  40     }
  41
  42     @Override
  43     public void accept(ListQualifierVisitor visitor) {
  44         visitor.visit(this);
  45     }
  46
  47     @Override
  48     public ListQualifier accept(ListQualifierTransformer transformer) {
  49         return transformer.transform(this);
  50     }
  51 }