Package org.codehaus.groovy.ast.stmt

Examples of org.codehaus.groovy.ast.stmt.BlockStatement

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        final List<PropertyNode> pList = getInstanceProperties(cNode);
        final List<FieldNode> fList = new ArrayList<FieldNode>();
        if (includeFields) {
            fList.addAll(getInstanceNonPropertyFields(cNode));
        }
        final BlockStatement body = new BlockStatement();
        // def _result = HashCodeHelper.initHash()
        final Expression result = new VariableExpression("_result");
        final Expression init = new StaticMethodCallExpression(HASHUTIL_TYPE, "initHash", MethodCallExpression.NO_ARGUMENTS);
        body.addStatement(new ExpressionStatement(new DeclarationExpression(result, ASSIGN, init)));

        for (PropertyNode pNode : pList) {
            if (shouldSkip(pNode.getName(), excludes, includes)) continue;
            // _result = HashCodeHelper.updateHash(_result, getProperty())
            String getterName = "get" + Verifier.capitalize(pNode.getName());
            Expression getter = new MethodCallExpression(VariableExpression.THIS_EXPRESSION, getterName, MethodCallExpression.NO_ARGUMENTS);
            final Expression args = new TupleExpression(result, getter);
            final Expression current = new StaticMethodCallExpression(HASHUTIL_TYPE, "updateHash", args);
            body.addStatement(assignStatement(result, current));

        }
        for (FieldNode fNode : fList) {
            if (shouldSkip(fNode.getName(), excludes, includes)) continue;
            // _result = HashCodeHelper.updateHash(_result, field)
            final Expression fieldExpr = new VariableExpression(fNode);
            final Expression args = new TupleExpression(result, fieldExpr);
            final Expression current = new StaticMethodCallExpression(HASHUTIL_TYPE, "updateHash", args);
            body.addStatement(assignStatement(result, current));
        }
        if (callSuper) {
            // _result = HashCodeHelper.updateHash(_result, super.hashCode())
            final Expression args = new TupleExpression(result, new MethodCallExpression(VariableExpression.SUPER_EXPRESSION, "hashCode", MethodCallExpression.NO_ARGUMENTS));
            final Expression current = new StaticMethodCallExpression(HASHUTIL_TYPE, "updateHash", args);
            body.addStatement(assignStatement(result, current));
        }
        // $hash$code = _result
        if (hash != null) {
            body.addStatement(assignStatement(hash, result));
        } else {
            body.addStatement(new ReturnStatement(result));
        }
        return body;
    }
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    private static void createCanEqual(ClassNode cNode) {
        boolean hasExistingCanEqual = hasDeclaredMethod(cNode, "canEqual", 1);
        if (hasExistingCanEqual && hasDeclaredMethod(cNode, "_canEqual", 1)) return;

        final BlockStatement body = new BlockStatement();
        VariableExpression other = new VariableExpression("other");
        body.addStatement(new ReturnStatement(isInstanceof(cNode, other)));
        Parameter[] params = {new Parameter(OBJECT_TYPE, other.getName())};
        cNode.addMethod(new MethodNode(hasExistingCanEqual ? "_canEqual" : "canEqual", hasExistingCanEqual ? ACC_PRIVATE : ACC_PUBLIC,
                ClassHelper.boolean_TYPE, params, ClassNode.EMPTY_ARRAY, body));

    }
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        if (useCanEqual) createCanEqual(cNode);
        // make a public method if none exists otherwise try a private method with leading underscore
        boolean hasExistingEquals = hasDeclaredMethod(cNode, "equals", 1);
        if (hasExistingEquals && hasDeclaredMethod(cNode, "_equals", 1)) return;

        final BlockStatement body = new BlockStatement();
        VariableExpression other = new VariableExpression("other");

        // some short circuit cases for efficiency
        body.addStatement(returnFalseIfNull(other));
        body.addStatement(returnTrueIfIdentical(VariableExpression.THIS_EXPRESSION, other));

        if (useCanEqual) {
            body.addStatement(returnFalseIfNotInstanceof(cNode, other));
            body.addStatement(new IfStatement(
                    new BooleanExpression(new MethodCallExpression(other, "canEqual", VariableExpression.THIS_EXPRESSION)),
                    new EmptyStatement(),
                    new ReturnStatement(ConstantExpression.FALSE)
            ));
        } else {
            body.addStatement(returnFalseIfWrongType(cNode, other));
        }
//        body.addStatement(new ExpressionStatement(new BinaryExpression(other, ASSIGN, new CastExpression(cNode, other))));

        List<PropertyNode> pList = getInstanceProperties(cNode);
        for (PropertyNode pNode : pList) {
            if (shouldSkip(pNode.getName(), excludes, includes)) continue;
            body.addStatement(returnFalseIfPropertyNotEqual(pNode, other));
        }
        List<FieldNode> fList = new ArrayList<FieldNode>();
        if (includeFields) {
            fList.addAll(getInstanceNonPropertyFields(cNode));
        }
        for (FieldNode fNode : fList) {
            if (shouldSkip(fNode.getName(), excludes, includes)) continue;
            body.addStatement(returnFalseIfFieldNotEqual(fNode, other));
        }
        if (callSuper) {
            body.addStatement(new IfStatement(
                    isTrueExpr(new MethodCallExpression(VariableExpression.SUPER_EXPRESSION, "equals", other)),
                    new EmptyStatement(),
                    new ReturnStatement(ConstantExpression.FALSE)
            ));
        }

        // default
        body.addStatement(new ReturnStatement(ConstantExpression.TRUE));

        Parameter[] params = {new Parameter(OBJECT_TYPE, other.getName())};
        cNode.addMethod(new MethodNode(hasExistingEquals ? "_equals" : "equals", hasExistingEquals ? ACC_PRIVATE : ACC_PUBLIC,
                ClassHelper.boolean_TYPE, params, ClassNode.EMPTY_ARRAY, body));
    }
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    public static void createToString(ClassNode cNode, boolean includeSuper, boolean includeFields, List<String> excludes, List<String> includes) {
        // make a public method if none exists otherwise try a private method with leading underscore
        boolean hasExistingToString = hasDeclaredMethod(cNode, "toString", 0);
        if (hasExistingToString && hasDeclaredMethod(cNode, "_toString", 0)) return;

        final BlockStatement body = new BlockStatement();
        // def _result = new StringBuffer()
        final Expression result = new VariableExpression("_result");
        final Expression init = new ConstructorCallExpression(STRINGBUFFER_TYPE, MethodCallExpression.NO_ARGUMENTS);
        body.addStatement(new ExpressionStatement(new DeclarationExpression(result, ASSIGN, init)));

        body.addStatement(append(result, new ConstantExpression(cNode.getName())));
        body.addStatement(append(result, new ConstantExpression("(")));
        boolean first = true;
        List<PropertyNode> pList = getInstanceProperties(cNode);
        for (PropertyNode pNode : pList) {
            if (shouldSkip(pNode.getName(), excludes, includes)) continue;
            first = appendPrefix(cNode, body, result, first, pNode.getName());
            String getterName = "get" + Verifier.capitalize(pNode.getName());
            Expression getter = new MethodCallExpression(VariableExpression.THIS_EXPRESSION, getterName, MethodCallExpression.NO_ARGUMENTS);
            body.addStatement(append(result, new StaticMethodCallExpression(INVOKER_TYPE, "toString", getter)));
        }
        List<FieldNode> fList = new ArrayList<FieldNode>();
        if (includeFields) {
            fList.addAll(getInstanceNonPropertyFields(cNode));
        }
        for (FieldNode fNode : fList) {
            if (shouldSkip(fNode.getName(), excludes, includes)) continue;
            first = appendPrefix(cNode, body, result, first, fNode.getName());
            body.addStatement(append(result, new StaticMethodCallExpression(INVOKER_TYPE, "toString", new VariableExpression(fNode))));
        }
        if (includeSuper) {
            appendPrefix(cNode, body, result, first, "super");
            // not through MOP to avoid infinite recursion
            body.addStatement(append(result, new MethodCallExpression(VariableExpression.SUPER_EXPRESSION, "toString", MethodCallExpression.NO_ARGUMENTS)));
        }
        body.addStatement(append(result, new ConstantExpression(")")));
        body.addStatement(new ReturnStatement(new MethodCallExpression(result, "toString", MethodCallExpression.NO_ARGUMENTS)));
        cNode.addMethod(new MethodNode(hasExistingToString ? "_toString" : "toString", hasExistingToString ? ACC_PRIVATE : ACC_PUBLIC,
                ClassHelper.STRING_TYPE, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, body));
    }
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        ));
        return first;
    }

    private static Statement toStringPropertyName(Expression result, String fName) {
        final BlockStatement body = new BlockStatement();
        body.addStatement(append(result, new ConstantExpression(fName)));
        body.addStatement(append(result, new ConstantExpression(":")));
        return body;
    }
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            }
        }
    }

    private void createCloneSerialization(ClassNode cNode, List<FieldNode> list, List<String> excludes) {
        final BlockStatement body = new BlockStatement();
        // def baos = new ByteArrayOutputStream()
        final Expression baos = new VariableExpression("baos");
        body.addStatement(new ExpressionStatement(new DeclarationExpression(baos, ASSIGN, new ConstructorCallExpression(BAOS_TYPE, MethodCallExpression.NO_ARGUMENTS))));

        // baos.withObjectOutputStream{ it.writeObject(this) }
        BlockStatement writeClosureCode = new BlockStatement();
        final Expression it = new VariableExpression("it");
        writeClosureCode.addStatement(new ExpressionStatement(new MethodCallExpression(it, "writeObject", VariableExpression.THIS_EXPRESSION)));
        ClosureExpression writeClosure = new ClosureExpression(new Parameter[]{}, writeClosureCode);
        writeClosure.setVariableScope(new VariableScope());
        body.addStatement(new ExpressionStatement(new MethodCallExpression(baos, "withObjectOutputStream", new ArgumentListExpression(writeClosure))));

        // def bais = new ByteArrayInputStream(baos.toByteArray())
        final Expression bais = new VariableExpression("bais");
        ConstructorCallExpression bytes = new ConstructorCallExpression(BAIS_TYPE, new TupleExpression(new MethodCallExpression(baos, "toByteArray", MethodCallExpression.NO_ARGUMENTS)));
        body.addStatement(new ExpressionStatement(new DeclarationExpression(bais, ASSIGN, bytes)));

        // return bais.withObjectInputStream(getClass().classLoader){ it.readObject() }
        BlockStatement readClosureCode = new BlockStatement();
        readClosureCode.addStatement(new ExpressionStatement(new MethodCallExpression(it, "readObject", MethodCallExpression.NO_ARGUMENTS)));
        ClosureExpression readClosure = new ClosureExpression(new Parameter[]{}, readClosureCode);
        readClosure.setVariableScope(new VariableScope());
        Expression klass = new MethodCallExpression(VariableExpression.THIS_EXPRESSION, "getClass", MethodCallExpression.NO_ARGUMENTS);
        Expression classLoader = new MethodCallExpression(klass, "getClassLoader", MethodCallExpression.NO_ARGUMENTS);
        Expression result = new MethodCallExpression(bais, "withObjectInputStream", new ArgumentListExpression(classLoader, readClosure));
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        ClassNode[] exceptions = {ClassHelper.make(CloneNotSupportedException.class)};
        cNode.addMethod("clone", ACC_PUBLIC, ClassHelper.OBJECT_TYPE, new Parameter[0], exceptions, body);
    }

    private void createCloneCopyConstructor(ClassNode cNode, List<FieldNode> list, List<String> excludes) {
        BlockStatement initBody = new BlockStatement();
        if (cNode.getDeclaredConstructors().size() == 0) {
            // add no-arg constructor
            initBody.addStatement(new EmptyStatement());
            cNode.addConstructor(ACC_PUBLIC, new Parameter[0], ClassNode.EMPTY_ARRAY, initBody);
            initBody = new BlockStatement();
        }
        Parameter initParam = new Parameter(cNode, "other");
        final Expression other = new VariableExpression(initParam);
        boolean hasParent = cNode.getSuperClass() != ClassHelper.OBJECT_TYPE;
        if (hasParent) {
            initBody.addStatement(new ExpressionStatement(new ConstructorCallExpression(ClassNode.SUPER, other)));
        }
        for (FieldNode fieldNode : list) {
            String name = fieldNode.getName();
            if (excludes.contains(name)) continue;
            PropertyExpression direct = new PropertyExpression(other, name);
            Expression cloned = new MethodCallExpression(direct, "clone", MethodCallExpression.NO_ARGUMENTS);
            Expression to = new PropertyExpression(VariableExpression.THIS_EXPRESSION, name);
            Statement assignCloned = assignStatement(to, cloned);
            Statement assignDirect = assignStatement(to, direct);
            initBody.addStatement(new IfStatement(isInstanceOf(direct, CLONEABLE_TYPE), assignCloned, assignDirect));
        }
        ClassNode[] exceptions = {ClassHelper.make(CloneNotSupportedException.class)};
        cNode.addConstructor(ACC_PROTECTED, new Parameter[]{initParam}, ClassNode.EMPTY_ARRAY, initBody);
        final BlockStatement cloneBody = new BlockStatement();
        cloneBody.addStatement(new ExpressionStatement(new ConstructorCallExpression(cNode, new ArgumentListExpression(VariableExpression.THIS_EXPRESSION))));
        cNode.addMethod("clone", ACC_PUBLIC, ClassHelper.OBJECT_TYPE, new Parameter[0], exceptions, cloneBody);
    }
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        cloneBody.addStatement(new ExpressionStatement(new ConstructorCallExpression(cNode, new ArgumentListExpression(VariableExpression.THIS_EXPRESSION))));
        cNode.addMethod("clone", ACC_PUBLIC, ClassHelper.OBJECT_TYPE, new Parameter[0], exceptions, cloneBody);
    }

    private void createClone(ClassNode cNode, List<FieldNode> list, List<String> excludes) {
        final BlockStatement body = new BlockStatement();
        final Expression result = new VariableExpression("_result");
        final Expression clone = new MethodCallExpression(VariableExpression.SUPER_EXPRESSION, "clone", MethodCallExpression.NO_ARGUMENTS);
        body.addStatement(new ExpressionStatement(new DeclarationExpression(result, ASSIGN, clone)));
        for (FieldNode fieldNode : list) {
            if (excludes.contains(fieldNode.getName())) continue;
            Expression fieldExpr = new VariableExpression(fieldNode);
            Expression from = new MethodCallExpression(fieldExpr, "clone", MethodCallExpression.NO_ARGUMENTS);
            Expression to = new PropertyExpression(result, fieldNode.getName());
            Statement doClone = assignStatement(to, from);
            Statement doNothing = new EmptyStatement();
            body.addStatement(new IfStatement(isInstanceOf(fieldExpr, CLONEABLE_TYPE), doClone, doNothing));
        }
        body.addStatement(new ReturnStatement(result));
        ClassNode[] exceptions = {ClassHelper.make(CloneNotSupportedException.class)};
        cNode.addMethod("clone", ACC_PUBLIC, ClassHelper.OBJECT_TYPE, new Parameter[0], exceptions, body);
    }
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        classNode.addConstructor(new ConstructorNode(ACC_PUBLIC, null));
        classNode.addProperty(new PropertyNode("bar", ACC_PUBLIC, ClassHelper.STRING_TYPE, classNode, null, null, null));

        Statement loopStatement = createPrintlnStatement(new VariableExpression("i"));

        BlockStatement block = new BlockStatement();
        block.addStatement(new ExpressionStatement(new DeclarationExpression(new VariableExpression("list"), Token.newSymbol("=", 0, 0), listExpression)));
        block.addStatement(new ForStatement(new Parameter(ClassHelper.DYNAMIC_TYPE, "i"), new VariableExpression("list"), loopStatement));
        classNode.addMethod(new MethodNode(methodName, ACC_PUBLIC, ClassHelper.VOID_TYPE, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, block));

        Class fooClass = loadClass(classNode);
        assertTrue("Loaded a new class", fooClass != null);
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        ClassNode classNode = new ClassNode("Foo", ACC_PUBLIC, ClassHelper.OBJECT_TYPE);
        classNode.addConstructor(new ConstructorNode(ACC_PUBLIC, null));

        Statement statementA = new ReturnStatement(new ConstantExpression("calledA"));
        Statement statementB = new ReturnStatement(new ConstantExpression("calledB"));
        Statement emptyStatement = new BlockStatement();

        classNode.addMethod(new MethodNode("a", ACC_PUBLIC, ClassHelper.OBJECT_TYPE, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, statementA));
        classNode.addMethod(new MethodNode("b", ACC_PUBLIC, null, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, statementB));

        classNode.addMethod(new MethodNode("noReturnMethodA", ACC_PUBLIC, null, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, emptyStatement));
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