bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/block/RuleStatement.java

   1 package org.simantics.scl.compiler.elaboration.expressions.block;\r
   2 \r
   3 import org.simantics.scl.compiler.elaboration.contexts.EnvironmentalContext;\r
   4 import org.simantics.scl.compiler.elaboration.contexts.ReplaceContext;\r
   5 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;\r
   6 import org.simantics.scl.compiler.elaboration.expressions.Expression;\r
   7 import org.simantics.scl.compiler.elaboration.query.Query;\r
   8 import org.simantics.scl.compiler.errors.Locations;\r
   9 \r
  10 public class RuleStatement extends Statement {\r
  11 \r
  12     public Expression head;\r
  13     public Query body;\r
  14 \r
  15     public RuleStatement(Expression head, Query body) {\r
  16         this.head = head;\r
  17         this.body = body;\r
  18     }\r
  19 \r
  20     @Override\r
  21     public Expression toExpression(EnvironmentalContext context, boolean monadic,\r
  22             Expression in) {\r
  23         throw new UnsupportedOperationException();\r
  24     }\r
  25     \r
  26     @Override\r
  27     public void setLocationDeep(long loc) {\r
  28         if(location == Locations.NO_LOCATION) {\r
  29             location = loc;\r
  30             head.setLocationDeep(loc);\r
  31             body.setLocationDeep(loc);\r
  32         }\r
  33     }\r
  34     \r
  35     @Override\r
  36     public void resolvePattern(TranslationContext context) {\r
  37         head = head.resolveAsPattern(context);\r
  38     }\r
  39     \r
  40     @Override\r
  41     public boolean mayBeRecursive() {\r
  42         return true;\r
  43     }\r
  44     \r
  45     @Override\r
  46     public Statement replace(ReplaceContext context) {\r
  47         return new RuleStatement(head.replaceInPattern(context), body.replace(context));\r
  48     }\r
  49     \r
  50     @Override\r
  51     public void accept(StatementVisitor visitor) {\r
  52         visitor.visit(this);\r
  53     }\r
  54 \r
  55     @Override\r
  56     public StatementGroup getStatementGroup() {\r
  57         return StatementGroup.Rule;\r
  58     }\r
  59 }\r