com.cloudbees.groovy.cps.impl.ClosureBlock Maven / Gradle / Ivy
package com.cloudbees.groovy.cps.impl;
import com.cloudbees.groovy.cps.Block;
import com.cloudbees.groovy.cps.Continuation;
import com.cloudbees.groovy.cps.Env;
import com.cloudbees.groovy.cps.Next;
import java.lang.reflect.Constructor;
import java.util.List;
/**
* Closure instantiation: { ... }
*
* @author Kohsuke Kawaguchi
*/
public class ClosureBlock implements Block {
private final List parameters;
private final List parameterTypes;
private final Block body;
// this field would be null if we are deserializing from data saved by old version
private final Class closureType;
private final SourceLocation loc;
public ClosureBlock(SourceLocation loc, List parameterTypes, List parameters, Block body, Class closureType) {
this.loc = loc;
this.parameterTypes = parameterTypes;
this.parameters = parameters;
this.body = body;
this.closureType = closureType;
}
private Class closureType() {
if (closureType==null) return CpsClosure.class; // backward compatibility with persisted form
return closureType;
}
public Next eval(Env e, Continuation k) {
try {
Constructor c = closureType().getConstructor(
Object.class, Object.class, List.class, Block.class, Env.class
);
CpsClosure closure = c.newInstance(e.closureOwner(), e.getLocalVariable("this"), parameters, body, e);
if (parameterTypes!=null) { // backward compatibility with persisted form
closure.setParameterTypes(parameterTypes);
}
return k.receive(closure);
} catch (Exception x) {
return new ContinuationGroup() {}.
throwException(e, x, loc, new ReferenceStackTrace());
}
}
private static final long serialVersionUID = 1L;
}