Examples with Closure groovy.lang.Closure used on opensource projects

Example 11 with Closure

use of groovy.lang.Closure in project groovy by apache.

the class GroovyTypeCheckingExtensionSupport method handleIncompatibleReturnType.

@Override
public boolean handleIncompatibleReturnType(final ReturnStatement returnStatement, ClassNode inferredReturnType) {
    setHandled(false);
    List<Closure> list = eventHandlers.get("handleIncompatibleReturnType");
    if (list != null) {
        for (Closure closure : list) {
            safeCall(closure, returnStatement, inferredReturnType);
        }
    }
    return handled;
}

Example 12 with Closure

use of groovy.lang.Closure in project groovy by apache.

the class GroovyTypeCheckingExtensionSupport method handleAmbiguousMethods.

@Override
@SuppressWarnings("unchecked")
public List<MethodNode> handleAmbiguousMethods(final List<MethodNode> nodes, final Expression origin) {
    List<Closure> onMethodSelection = eventHandlers.get("handleAmbiguousMethods");
    List<MethodNode> methodList = nodes;
    if (onMethodSelection != null) {
        Iterator<Closure> iterator = onMethodSelection.iterator();
        while (methodList.size() > 1 && iterator.hasNext()) {
            final Closure closure = iterator.next();
            Object result = safeCall(closure, methodList, origin);
            if (result != null) {
                if (result instanceof MethodNode) {
                    methodList = Collections.singletonList((MethodNode) result);
                } else if (result instanceof Collection) {
                    methodList = new LinkedList<MethodNode>((Collection<? extends MethodNode>) result);
                } else {
                    throw new GroovyBugError("Type checking extension returned unexpected method list: " + result);
                }
            }
        }
    }
    return methodList;
}

Example 13 with Closure

use of groovy.lang.Closure in project groovy by apache.

the class GroovyTypeCheckingExtensionSupport method beforeMethodCall.

@Override
public boolean beforeMethodCall(final MethodCall call) {
    setHandled(false);
    List<Closure> onMethodSelection = eventHandlers.get("beforeMethodCall");
    if (onMethodSelection != null) {
        for (Closure closure : onMethodSelection) {
            safeCall(closure, call);
        }
    }
    return handled;
}

Example 14 with Closure

use of groovy.lang.Closure in project groovy by apache.

the class BindPathSnooper method createBinding.

public FullBinding createBinding(SourceBinding source, TargetBinding target) {
    if (source != this) {
        throw new RuntimeException("Source binding must the Trigger Binding as well");
    }
    final BindPathSnooper delegate = new BindPathSnooper();
    try {
        // create our own local copy of the closure
        final Class closureClass = closure.getClass();
        // do in privileged block since we may be looking at private stuff
        Closure closureLocalCopy = java.security.AccessController.doPrivileged(new PrivilegedAction<Closure>() {

            public Closure run() {
                // assume closures have only 1 constructor, of the form (Object, Reference*)
                Constructor constructor = closureClass.getConstructors()[0];
                int paramCount = constructor.getParameterTypes().length;
                Object[] args = new Object[paramCount];
                args[0] = delegate;
                for (int i = 1; i < paramCount; i++) {
                    args[i] = new Reference(new BindPathSnooper());
                }
                try {
                    boolean acc = constructor.isAccessible();
                    constructor.setAccessible(true);
                    Closure localCopy = (Closure) constructor.newInstance(args);
                    if (!acc) {
                        constructor.setAccessible(false);
                    }
                    localCopy.setResolveStrategy(Closure.DELEGATE_ONLY);
                    for (Field f : closureClass.getDeclaredFields()) {
                        acc = f.isAccessible();
                        f.setAccessible(true);
                        if (f.getType() == Reference.class) {
                            delegate.fields.put(f.getName(), (BindPathSnooper) ((Reference) f.get(localCopy)).get());
                        }
                        if (!acc) {
                            f.setAccessible(false);
                        }
                    }
                    return localCopy;
                } catch (Exception e) {
                    throw new RuntimeException("Error snooping closure", e);
                }
            }
        });
        try {
            closureLocalCopy.call();
        } catch (DeadEndException e) {
            // we want this exception exposed.
            throw e;
        } catch (Exception e) {
        //LOGME
        // ignore it, likely failing because we are faking out properties
        // such as a call to Math.min(int, BindPathSnooper)
        }
    } catch (Exception e) {
        e.printStackTrace(System.out);
        throw new RuntimeException("A closure expression binding could not be created because of " + e.getClass().getName() + ":\n\t" + e.getMessage());
    }
    List<BindPath> rootPaths = new ArrayList<BindPath>();
    for (Map.Entry<String, BindPathSnooper> entry : delegate.fields.entrySet()) {
        BindPath bp = createBindPath(entry.getKey(), entry.getValue());
        bp.currentObject = closure;
        rootPaths.add(bp);
    }
    PropertyPathFullBinding fb = new PropertyPathFullBinding();
    fb.setSourceBinding(new ClosureSourceBinding(closure));
    fb.setTargetBinding(target);
    fb.bindPaths = rootPaths.toArray(new BindPath[rootPaths.size()]);
    return fb;
}

Example 15 with Closure

use of groovy.lang.Closure in project groovy by apache.

the class GPathResult method getBody.

/**
     * Creates a Closure representing the body of this GPathResult.
     *
     * @return the body of this GPathResult, converted to a <code>Closure</code>
     */
public Closure getBody() {
    return new Closure(this.parent, this) {

        public void doCall(Object[] args) {
            final GroovyObject delegate = (GroovyObject) getDelegate();
            final GPathResult thisObject = (GPathResult) getThisObject();
            Node node = (Node) thisObject.getAt(0);
            List children = node.children();
            for (Object child : children) {
                delegate.getProperty("mkp");
                if (child instanceof Node) {
                    delegate.invokeMethod("yield", new Object[] { new NodeChild((Node) child, thisObject, "*", null) });
                } else {
                    delegate.invokeMethod("yield", new Object[] { child });
                }
            }
        }
    };
}