Package org.codehaus.groovy.ast.stmt

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

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                    final MethodCallExpression methodCall = new MethodCallExpression(new FieldExpression(fieldNode), "clone", ArgumentListExpression.EMPTY_ARGUMENTS);
                    // return null if field is null
                    methodCall.setSafe(true);

                    ExpressionStatement oldVariableAssignment = new ExpressionStatement(
                        new DeclarationExpression(oldVariable,
                        Token.newSymbol(Types.ASSIGN, -1, -1),
                                methodCall));

                    methodBlockStatement.addStatement(oldVariableAssignment);
                    oldVariablesMap.addMapEntryExpression(new MapEntryExpression(new ConstantExpression(oldVariable.getName().substring("$old$".length())), oldVariable));

                } else if (ClassHelper.isPrimitiveType(fieldType)
                        || ClassHelper.isNumberType(fieldType)
                        || fieldType.getName().startsWith("java.math")
                        || fieldType.getName().equals("groovy.lang.GString")
                        || fieldType.getName().equals("java.lang.String")) {

                    VariableExpression oldVariable = new VariableExpression("$old$" + fieldNode.getName(), fieldNode.getType());
                    oldVariable.setAccessedVariable(oldVariable);

                    ExpressionStatement oldVariableAssignment = new ExpressionStatement(
                        new DeclarationExpression(oldVariable,
                        Token.newSymbol(Types.ASSIGN, -1, -1),
                        new FieldExpression(fieldNode)));

                    methodBlockStatement.addStatement(oldVariableAssignment);
                    oldVariablesMap.addMapEntryExpression(new MapEntryExpression(new ConstantExpression(oldVariable.getName().substring("$old$".length())), oldVariable));
                }
            }
        }

        VariableExpression oldVariable = new VariableExpression("old", new ClassNode(Map.class));
        oldVariable.setAccessedVariable(oldVariable);

        ExpressionStatement oldVariabeStatement = new ExpressionStatement(
                new DeclarationExpression(oldVariable,
                        Token.newSymbol(Types.ASSIGN, -1, -1),
                        oldVariablesMap));

        methodBlockStatement.addStatement(oldVariabeStatement);

        VariableExpression mergedOldVariables = null;

        // let's ask the super class for old variables...
        if (classNode.getSuperClass() != null && classNode.getSuperClass().getMethod(OLD_VARIABLES_METHOD, Parameter.EMPTY_ARRAY) != null)  {
            mergedOldVariables = new VariableExpression("mergedOldVariables", new ClassNode(Map.class));
            mergedOldVariables.setAccessedVariable(mergedOldVariables);

            ExpressionStatement mergedOldVariablesStatement = new ExpressionStatement(
                new DeclarationExpression(mergedOldVariables,
                        Token.newSymbol(Types.ASSIGN, -1, -1),
                        new MethodCallExpression(oldVariable, "plus", new ArgumentListExpression(new MethodCallExpression(VariableExpression.SUPER_EXPRESSION, OLD_VARIABLES_METHOD, ArgumentListExpression.EMPTY_ARGUMENTS)))));

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        }
        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());
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        }
        return result;
    }

    public static Statement assignStatement(Expression fieldExpr, Expression value) {
        return new ExpressionStatement(assignExpr(fieldExpr, value));
    }
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    }

    public static Statement safeExpression(Expression fieldExpr, Expression expression) {
        return new IfStatement(
                equalsNullExpr(fieldExpr),
                new ExpressionStatement(fieldExpr),
                new ExpressionStatement(expression));
    }
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        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);
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        body.addStatement(append(result, new ConstantExpression(":")));
        return body;
    }

    private static ExpressionStatement append(Expression result, Expression expr) {
        return new ExpressionStatement(new MethodCallExpression(result, "append", expr));
    }
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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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        }
        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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    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());
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        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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