package org.jboss.windup.config;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.ocpsoft.rewrite.config.Operation;
import org.ocpsoft.rewrite.context.ContextBase;
import org.ocpsoft.rewrite.context.EvaluationContext;
import org.ocpsoft.rewrite.context.RewriteState;
import org.ocpsoft.rewrite.param.DefaultParameterStore;
import org.ocpsoft.rewrite.param.ParameterStore;
import org.ocpsoft.rewrite.param.ParameterValueStore;
/**
* @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
*/
public class DefaultEvaluationContext extends ContextBase implements EvaluationContext
{
private final List<Operation> preOperations = new ArrayList<>();
private final List<Operation> postOperations = new ArrayList<>();
private RewriteState state;
private final EvaluationContext parent;
public DefaultEvaluationContext()
{
put(ParameterStore.class, new DefaultParameterStore());
parent = null;
}
public DefaultEvaluationContext(EvaluationContext context)
{
put(ParameterStore.class, context.get(ParameterStore.class));
put(ParameterValueStore.class, context.get(ParameterValueStore.class));
parent = context;
}
@Override
public boolean containsKey(Object key)
{
boolean result = super.containsKey(key);
if (result == false && parent != null)
result = parent.containsKey(key);
return result;
}
@Override
public Object get(Object key)
{
Object result = super.get(key);
if (result == null && parent != null)
result = parent.get(key);
return result;
}
@Override
public void addPreOperation(final Operation operation)
{
this.preOperations.add(operation);
}
@Override
public void addPostOperation(final Operation operation)
{
this.preOperations.add(operation);
}
/**
* Get an immutable view of the added pre-{@link Operation} instances.
*/
public List<Operation> getPreOperations()
{
return Collections.unmodifiableList(preOperations);
}
/**
* Get an immutable view of the added post-{@link Operation} instances.
*/
public List<Operation> getPostOperations()
{
return Collections.unmodifiableList(postOperations);
}
@Override
public String toString()
{
return "DefaultEvaluationContext [preOperations=" + preOperations + ", postOperations=" + postOperations + "]";
}
/**
* Clears the state of this context so that it may be reused, saving instantiation cost during rule iteration.
*/
@Override
public void clear()
{
this.postOperations.clear();
this.postOperations.clear();
}
@Override
public RewriteState getState()
{
return state;
}
public void setState(RewriteState state)
{
this.state = state;
}
}