Examples with Expression org.codehaus.groovy.ast.expr.Expression used on opensource projects

Example 26 with Expression

use of org.codehaus.groovy.ast.expr.Expression in project groovy-core by groovy.

the class TraitComposer method createForwarderMethod.

private static void createForwarderMethod(ClassNode trait, ClassNode targetNode, MethodNode helperMethod, MethodNode originalMethod, ClassNode helperClassNode, Map<String, ClassNode> genericsSpec, Parameter[] helperMethodParams, Parameter[] traitMethodParams, Parameter[] forwarderParams, ArgumentListExpression helperMethodArgList) {
    MethodCallExpression mce = new MethodCallExpression(new ClassExpression(helperClassNode), helperMethod.getName(), helperMethodArgList);
    mce.setImplicitThis(false);
    genericsSpec = GenericsUtils.addMethodGenerics(helperMethod, genericsSpec);
    ClassNode[] exceptionNodes = correctToGenericsSpecRecurse(genericsSpec, copyExceptions(helperMethod.getExceptions()));
    ClassNode fixedReturnType = correctToGenericsSpecRecurse(genericsSpec, helperMethod.getReturnType());
    Expression forwardExpression = genericsSpec.isEmpty() ? mce : new CastExpression(fixedReturnType, mce);
    int access = helperMethod.getModifiers();
    // we could rely on the first parameter name ($static$self) but that information is not
    // guaranteed to be always present
    boolean isHelperForStaticMethod = helperMethodParams[0].getOriginType().equals(ClassHelper.CLASS_Type);
    if (Modifier.isPrivate(access) && !isHelperForStaticMethod) {
        // see GROOVY-7213
        return;
    }
    if (!isHelperForStaticMethod) {
        access = access ^ Opcodes.ACC_STATIC;
    }
    MethodNode forwarder = new MethodNode(helperMethod.getName(), access, fixedReturnType, forwarderParams, exceptionNodes, new ExpressionStatement(forwardExpression));
    List<AnnotationNode> copied = new LinkedList<AnnotationNode>();
    // at this point, should *always* stay empty
    List<AnnotationNode> notCopied = Collections.emptyList();
    GeneralUtils.copyAnnotatedNodeAnnotations(helperMethod, copied, notCopied);
    if (!copied.isEmpty()) {
        forwarder.addAnnotations(copied);
    }
    if (originalMethod != null) {
        GenericsType[] newGt = GenericsUtils.applyGenericsContextToPlaceHolders(genericsSpec, originalMethod.getGenericsTypes());
        newGt = removeNonPlaceHolders(newGt);
        forwarder.setGenericsTypes(newGt);
    }
    // add a helper annotation indicating that it is a bridge method
    AnnotationNode bridgeAnnotation = new AnnotationNode(Traits.TRAITBRIDGE_CLASSNODE);
    bridgeAnnotation.addMember("traitClass", new ClassExpression(trait));
    bridgeAnnotation.addMember("desc", new ConstantExpression(BytecodeHelper.getMethodDescriptor(helperMethod.getReturnType(), traitMethodParams)));
    forwarder.addAnnotation(bridgeAnnotation);
    if (!shouldSkipMethod(targetNode, forwarder.getName(), forwarderParams)) {
        targetNode.addMethod(forwarder);
    }
    createSuperForwarder(targetNode, forwarder, genericsSpec);
}

Example 27 with Expression

use of org.codehaus.groovy.ast.expr.Expression in project groovy-core by groovy.

the class TraitComposer method applyTrait.

private static void applyTrait(final ClassNode trait, final ClassNode cNode, final TraitHelpersTuple helpers) {
    ClassNode helperClassNode = helpers.getHelper();
    ClassNode fieldHelperClassNode = helpers.getFieldHelper();
    Map<String, ClassNode> genericsSpec = GenericsUtils.createGenericsSpec(cNode);
    genericsSpec = GenericsUtils.createGenericsSpec(trait, genericsSpec);
    for (MethodNode methodNode : helperClassNode.getAllDeclaredMethods()) {
        String name = methodNode.getName();
        Parameter[] helperMethodParams = methodNode.getParameters();
        boolean isAbstract = methodNode.isAbstract();
        if (!isAbstract && helperMethodParams.length > 0 && ((methodNode.getModifiers() & Opcodes.ACC_STATIC) == Opcodes.ACC_STATIC) && !name.contains("$")) {
            ArgumentListExpression argList = new ArgumentListExpression();
            argList.addExpression(new VariableExpression("this"));
            Parameter[] origParams = new Parameter[helperMethodParams.length - 1];
            Parameter[] params = new Parameter[helperMethodParams.length - 1];
            System.arraycopy(methodNode.getParameters(), 1, params, 0, params.length);
            Map<String, ClassNode> methodGenericsSpec = new LinkedHashMap<String, ClassNode>(genericsSpec);
            MethodNode originalMethod = trait.getMethod(name, params);
            // Original method may be null in case of a private method
            if (originalMethod != null) {
                methodGenericsSpec = GenericsUtils.addMethodGenerics(originalMethod, methodGenericsSpec);
            }
            for (int i = 1; i < helperMethodParams.length; i++) {
                Parameter parameter = helperMethodParams[i];
                ClassNode originType = parameter.getOriginType();
                ClassNode fixedType = correctToGenericsSpecRecurse(methodGenericsSpec, originType);
                Parameter newParam = new Parameter(fixedType, "arg" + i);
                List<AnnotationNode> copied = new LinkedList<AnnotationNode>();
                List<AnnotationNode> notCopied = new LinkedList<AnnotationNode>();
                GeneralUtils.copyAnnotatedNodeAnnotations(parameter, copied, notCopied);
                newParam.addAnnotations(copied);
                params[i - 1] = newParam;
                origParams[i - 1] = parameter;
                argList.addExpression(new VariableExpression(params[i - 1]));
            }
            createForwarderMethod(trait, cNode, methodNode, originalMethod, helperClassNode, methodGenericsSpec, helperMethodParams, origParams, params, argList);
        }
    }
    cNode.addObjectInitializerStatements(new ExpressionStatement(new MethodCallExpression(new ClassExpression(helperClassNode), Traits.INIT_METHOD, new ArgumentListExpression(new VariableExpression("this")))));
    MethodCallExpression staticInitCall = new MethodCallExpression(new ClassExpression(helperClassNode), Traits.STATIC_INIT_METHOD, new ArgumentListExpression(new ClassExpression(cNode)));
    MethodNode staticInitMethod = new MethodNode(Traits.STATIC_INIT_METHOD, Opcodes.ACC_STATIC | Opcodes.ACC_PUBLIC, ClassHelper.VOID_TYPE, new Parameter[] { new Parameter(ClassHelper.CLASS_Type, "clazz") }, ClassNode.EMPTY_ARRAY, EmptyStatement.INSTANCE);
    staticInitMethod.setDeclaringClass(helperClassNode);
    staticInitCall.setMethodTarget(staticInitMethod);
    cNode.addStaticInitializerStatements(Collections.<Statement>singletonList(new ExpressionStatement(staticInitCall)), false);
    if (fieldHelperClassNode != null && !cNode.declaresInterface(fieldHelperClassNode)) {
        // we should implement the field helper interface too
        cNode.addInterface(fieldHelperClassNode);
        // implementation of methods
        List<MethodNode> declaredMethods = fieldHelperClassNode.getAllDeclaredMethods();
        Collections.sort(declaredMethods, GETTER_FIRST_COMPARATOR);
        for (MethodNode methodNode : declaredMethods) {
            String fieldName = methodNode.getName();
            if (fieldName.endsWith(Traits.DIRECT_GETTER_SUFFIX) || fieldName.endsWith(Traits.DIRECT_SETTER_SUFFIX)) {
                int suffixIdx = fieldName.lastIndexOf("$");
                fieldName = fieldName.substring(0, suffixIdx);
                String operation = methodNode.getName().substring(suffixIdx + 1);
                boolean getter = "get".equals(operation);
                ClassNode returnType = correctToGenericsSpecRecurse(genericsSpec, methodNode.getReturnType());
                int isStatic = 0;
                boolean publicField = true;
                FieldNode helperField = fieldHelperClassNode.getField(Traits.FIELD_PREFIX + Traits.PUBLIC_FIELD_PREFIX + fieldName);
                if (helperField == null) {
                    publicField = false;
                    helperField = fieldHelperClassNode.getField(Traits.FIELD_PREFIX + Traits.PRIVATE_FIELD_PREFIX + fieldName);
                }
                if (helperField == null) {
                    publicField = true;
                    // try to find a static one
                    helperField = fieldHelperClassNode.getField(Traits.STATIC_FIELD_PREFIX + Traits.PUBLIC_FIELD_PREFIX + fieldName);
                    if (helperField == null) {
                        publicField = false;
                        helperField = fieldHelperClassNode.getField(Traits.STATIC_FIELD_PREFIX + Traits.PRIVATE_FIELD_PREFIX + fieldName);
                    }
                    isStatic = Opcodes.ACC_STATIC;
                }
                if (getter) {
                    // add field
                    if (helperField != null) {
                        List<AnnotationNode> copied = new LinkedList<AnnotationNode>();
                        List<AnnotationNode> notCopied = new LinkedList<AnnotationNode>();
                        GeneralUtils.copyAnnotatedNodeAnnotations(helperField, copied, notCopied);
                        FieldNode fieldNode = cNode.addField(fieldName, (publicField ? Opcodes.ACC_PUBLIC : Opcodes.ACC_PRIVATE) | isStatic, returnType, null);
                        fieldNode.addAnnotations(copied);
                    }
                }
                Parameter[] newParams;
                if (getter) {
                    newParams = Parameter.EMPTY_ARRAY;
                } else {
                    ClassNode originType = methodNode.getParameters()[0].getOriginType();
                    ClassNode fixedType = originType.isGenericsPlaceHolder() ? ClassHelper.OBJECT_TYPE : correctToGenericsSpecRecurse(genericsSpec, originType);
                    newParams = new Parameter[] { new Parameter(fixedType, "val") };
                }
                Expression fieldExpr = new VariableExpression(cNode.getField(fieldName));
                Statement body = getter ? new ReturnStatement(fieldExpr) : new ExpressionStatement(new BinaryExpression(fieldExpr, Token.newSymbol(Types.EQUAL, 0, 0), new VariableExpression(newParams[0])));
                MethodNode impl = new MethodNode(methodNode.getName(), Opcodes.ACC_PUBLIC | isStatic, returnType, newParams, ClassNode.EMPTY_ARRAY, body);
                AnnotationNode an = new AnnotationNode(COMPILESTATIC_CLASSNODE);
                impl.addAnnotation(an);
                cNode.addTransform(StaticCompileTransformation.class, an);
                cNode.addMethod(impl);
            }
        }
    }
}

Example 28 with Expression

use of org.codehaus.groovy.ast.expr.Expression in project groovy-core by groovy.

the class TraitReceiverTransformer method transformMethodCallOnThis.

private Expression transformMethodCallOnThis(final MethodCallExpression call) {
    Expression method = call.getMethod();
    Expression arguments = call.getArguments();
    if (method instanceof ConstantExpression) {
        String methodName = method.getText();
        List<MethodNode> methods = traitClass.getMethods(methodName);
        for (MethodNode methodNode : methods) {
            if (methodName.equals(methodNode.getName()) && methodNode.isPrivate()) {
                return transformPrivateMethodCall(call, arguments, methodName);
            }
        }
    }
    MethodCallExpression transformed = new MethodCallExpression(weaved, method, transform(arguments));
    transformed.setSourcePosition(call);
    transformed.setSafe(call.isSafe());
    transformed.setSpreadSafe(call.isSpreadSafe());
    transformed.setImplicitThis(false);
    return transformed;
}

Example 29 with Expression

use of org.codehaus.groovy.ast.expr.Expression in project groovy-core by groovy.

the class TraitReceiverTransformer method transform.

@Override
public Expression transform(final Expression exp) {
    ClassNode weavedType = weaved.getOriginType();
    if (exp instanceof BinaryExpression) {
        return transformBinaryExpression((BinaryExpression) exp, weavedType);
    } else if (exp instanceof StaticMethodCallExpression) {
        StaticMethodCallExpression call = (StaticMethodCallExpression) exp;
        ClassNode ownerType = call.getOwnerType();
        if (traitClass.equals(ownerType)) {
            MethodCallExpression result = new MethodCallExpression(new VariableExpression(weaved), call.getMethod(), transform(call.getArguments()));
            result.setSafe(false);
            result.setImplicitThis(false);
            result.setSpreadSafe(false);
            result.setSourcePosition(call);
            return result;
        }
    } else if (exp instanceof MethodCallExpression) {
        MethodCallExpression call = (MethodCallExpression) exp;
        Expression obj = call.getObjectExpression();
        if (call.isImplicitThis() || "this".equals(obj.getText())) {
            return transformMethodCallOnThis(call);
        } else if ("super".equals(obj.getText())) {
            return transformSuperMethodCall(call);
        }
    } else if (exp instanceof FieldExpression) {
        return transformFieldExpression((FieldExpression) exp);
    } else if (exp instanceof VariableExpression) {
        VariableExpression vexp = (VariableExpression) exp;
        Variable accessedVariable = vexp.getAccessedVariable();
        if (accessedVariable instanceof FieldNode) {
            FieldNode fn = (FieldNode) accessedVariable;
            Expression receiver = createFieldHelperReceiver();
            MethodCallExpression mce;
            boolean isStatic = fn.isStatic();
            if (isStatic) {
                receiver = createStaticReceiver(receiver);
            }
            mce = new MethodCallExpression(receiver, Traits.helperGetterName(fn), ArgumentListExpression.EMPTY_ARGUMENTS);
            mce.setSourcePosition(exp);
            mce.setImplicitThis(false);
            markDynamicCall(mce, fn, isStatic);
            return mce;
        } else if (accessedVariable instanceof PropertyNode) {
            String propName = accessedVariable.getName();
            if (knownFields.contains(propName)) {
                String method = Traits.helperGetterName(new FieldNode(propName, 0, ClassHelper.OBJECT_TYPE, weavedType, null));
                MethodCallExpression mce = new MethodCallExpression(createFieldHelperReceiver(), method, ArgumentListExpression.EMPTY_ARGUMENTS);
                mce.setSourcePosition(exp);
                mce.setImplicitThis(false);
                return mce;
            } else {
                return new PropertyExpression(new VariableExpression(weaved), accessedVariable.getName());
            }
        } else if (accessedVariable instanceof DynamicVariable) {
            return new PropertyExpression(new VariableExpression(weaved), accessedVariable.getName());
        }
        if (vexp.isThisExpression()) {
            VariableExpression res = new VariableExpression(weaved);
            res.setSourcePosition(exp);
            return res;
        }
        if (vexp.isSuperExpression()) {
            throwSuperError(vexp);
        }
    } else if (exp instanceof PropertyExpression) {
        PropertyExpression pexp = (PropertyExpression) exp;
        Expression object = pexp.getObjectExpression();
        if (pexp.isImplicitThis() || "this".equals(object.getText())) {
            String propName = pexp.getPropertyAsString();
            if (knownFields.contains(propName)) {
                String method = Traits.helperGetterName(new FieldNode(propName, 0, ClassHelper.OBJECT_TYPE, weavedType, null));
                MethodCallExpression mce = new MethodCallExpression(createFieldHelperReceiver(), method, ArgumentListExpression.EMPTY_ARGUMENTS);
                mce.setSourcePosition(exp);
                mce.setImplicitThis(false);
                return mce;
            }
        }
    } else if (exp instanceof ClosureExpression) {
        MethodCallExpression mce = new MethodCallExpression(exp, "rehydrate", new ArgumentListExpression(new VariableExpression(weaved), new VariableExpression(weaved), new VariableExpression(weaved)));
        mce.setImplicitThis(false);
        mce.setSourcePosition(exp);
        ((ClosureExpression) exp).getCode().visit(this);
        // The rewrite we do is causing some troubles with type checking, which will
        // not be able to perform closure parameter type inference
        // so we store the replacement, which will be done *after* type checking.
        exp.putNodeMetaData(TraitASTTransformation.POST_TYPECHECKING_REPLACEMENT, mce);
        return exp;
    }
    // todo: unary expressions (field++, field+=, ...)
    return super.transform(exp);
}

Example 30 with Expression

use of org.codehaus.groovy.ast.expr.Expression in project groovy-core by groovy.

the class SuperCallTraitTransformer method transformBinaryExpression.

private Expression transformBinaryExpression(final BinaryExpression exp) {
    Expression trn = super.transform(exp);
    if (trn instanceof BinaryExpression) {
        BinaryExpression bin = (BinaryExpression) trn;
        Expression leftExpression = bin.getLeftExpression();
        if (bin.getOperation().getType() == Types.EQUAL && leftExpression instanceof PropertyExpression) {
            ClassNode traitReceiver = ((PropertyExpression) leftExpression).getObjectExpression().getNodeMetaData(SuperCallTraitTransformer.class);
            if (traitReceiver != null) {
                // A.super.foo = ...
                TraitHelpersTuple helpers = Traits.findHelpers(traitReceiver);
                ClassNode helper = helpers.getHelper();
                String setterName = MetaProperty.getSetterName(((PropertyExpression) leftExpression).getPropertyAsString());
                List<MethodNode> methods = helper.getMethods(setterName);
                for (MethodNode method : methods) {
                    Parameter[] parameters = method.getParameters();
                    if (parameters.length == 2 && parameters[0].getType().equals(traitReceiver)) {
                        ArgumentListExpression args = new ArgumentListExpression(new VariableExpression("this"), transform(exp.getRightExpression()));
                        MethodCallExpression setterCall = new MethodCallExpression(new ClassExpression(helper), setterName, args);
                        setterCall.setMethodTarget(method);
                        setterCall.setImplicitThis(false);
                        return setterCall;
                    }
                }
                return bin;
            }
        }
    }
    return trn;
}