bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/block/GuardStatement.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.EBind;\r
   7 import org.simantics.scl.compiler.elaboration.expressions.ESimpleLet;\r
   8 import org.simantics.scl.compiler.elaboration.expressions.EVariable;\r
   9 import org.simantics.scl.compiler.elaboration.expressions.Expression;\r
  10 import org.simantics.scl.compiler.elaboration.expressions.Variable;\r
  11 import org.simantics.scl.compiler.errors.Locations;\r
  12 \r
  13 public class GuardStatement extends Statement {\r
  14     public Expression value;\r
  15     \r
  16     public GuardStatement(Expression value) {\r
  17         this.value = value;\r
  18     }\r
  19 \r
  20     @Override\r
  21     public Expression toExpression(EnvironmentalContext context, boolean monadic, Expression in) {\r
  22         if(monadic) {\r
  23             Variable var = new Variable("_");\r
  24             return new EBind(location, new EVariable(location, var), value, in);\r
  25         }\r
  26         else\r
  27             return new ESimpleLet(location, null, value, in);\r
  28     }\r
  29     \r
  30     @Override\r
  31     public void setLocationDeep(long loc) {\r
  32         if(location == Locations.NO_LOCATION) {\r
  33             location = loc;\r
  34             value.setLocationDeep(loc);\r
  35         }\r
  36     }\r
  37     \r
  38     @Override\r
  39     public void resolvePattern(TranslationContext context) {\r
  40     }\r
  41     \r
  42     @Override\r
  43     public boolean mayBeRecursive() {\r
  44         return false;\r
  45     }\r
  46     \r
  47     @Override\r
  48     public Statement replace(ReplaceContext context) {\r
  49         return new GuardStatement(value.replace(context));\r
  50     }\r
  51     \r
  52     @Override\r
  53     public void accept(StatementVisitor visitor) {\r
  54         visitor.visit(this);\r
  55     }\r
  56 \r
  57     @Override\r
  58     public StatementGroup getStatementGroup() {\r
  59         return null;\r
  60     }\r
  61 }\r