+package org.simantics.scl.compiler.elaboration.expressions.block;\r
+\r
+import org.simantics.scl.compiler.elaboration.contexts.EnvironmentalContext;\r
+import org.simantics.scl.compiler.elaboration.contexts.ReplaceContext;\r
+import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;\r
+import org.simantics.scl.compiler.elaboration.expressions.EBind;\r
+import org.simantics.scl.compiler.elaboration.expressions.ESimpleLet;\r
+import org.simantics.scl.compiler.elaboration.expressions.EVariable;\r
+import org.simantics.scl.compiler.elaboration.expressions.Expression;\r
+import org.simantics.scl.compiler.elaboration.expressions.Variable;\r
+import org.simantics.scl.compiler.errors.Locations;\r
+\r
+public class GuardStatement extends Statement {\r
+ public Expression value;\r
+ \r
+ public GuardStatement(Expression value) {\r
+ this.value = value;\r
+ }\r
+\r
+ @Override\r
+ public Expression toExpression(EnvironmentalContext context, boolean monadic, Expression in) {\r
+ Variable var = new Variable("_");\r
+ if(monadic)\r
+ return new EBind(location, new EVariable(location, var), value, in);\r
+ else\r
+ return new ESimpleLet(location, var, value, in);\r
+ }\r
+ \r
+ @Override\r
+ public void setLocationDeep(long loc) {\r
+ if(location == Locations.NO_LOCATION) {\r
+ location = loc;\r
+ value.setLocationDeep(loc);\r
+ }\r
+ }\r
+ \r
+ @Override\r
+ public void resolvePattern(TranslationContext context) {\r
+ }\r
+ \r
+ @Override\r
+ public boolean mayBeRecursive() {\r
+ return false;\r
+ }\r
+ \r
+ @Override\r
+ public Statement replace(ReplaceContext context) {\r
+ return new GuardStatement(value.replace(context));\r
+ }\r
+ \r
+ @Override\r
+ public void accept(StatementVisitor visitor) {\r
+ visitor.visit(this);\r
+ }\r
+}\r