Package org.codehaus.groovy.transform.tailrec

Class VariableExpressionTransformer

java.lang.Object
org.codehaus.groovy.transform.tailrec.VariableExpressionTransformer
All Implemented Interfaces:
ExpressionTransformer
public class VariableExpressionTransformer extends Object implements ExpressionTransformer
An expression transformer used in the process of replacing the access to variables

  • Constructor Details

    • VariableExpressionTransformer

      public VariableExpressionTransformer(Closure<Boolean> when, Closure<VariableExpression> replaceWith)
      Creates a transformer with the supplied predicate and replacement strategy.
      Parameters:
      when - decides whether a variable expression should be replaced
      replaceWith - creates the replacement variable expression

  • Method Details

    • transform

      public Expression transform(Expression expr)
      Transforms the given expression.
      Specified by:
      transform in interface ExpressionTransformer
      Parameters:
      expr - the expression to transform, may be null
      Returns:
      the transformed expression, may be the same instance, a new instance, or null

    • getWhen

      public Closure<Boolean> getWhen()
      Returns the predicate that decides whether a variable expression should be replaced.
      Returns:
      the replacement predicate

    • setWhen

      public void setWhen(Closure<Boolean> when)
      Sets the predicate that decides whether a variable expression should be replaced.
      Parameters:
      when - the replacement predicate

    • getReplaceWith

      public Closure<VariableExpression> getReplaceWith()
      Returns the closure that creates replacement variable expressions.
      Returns:
      the replacement closure

    • setReplaceWith

      public void setReplaceWith(Closure<VariableExpression> replaceWith)
      Sets the closure that creates replacement variable expressions.
      Parameters:
      replaceWith - the replacement closure