ar.edu.taco.simplejml.methodinfo.MethodInformationBuilder.java Source code

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Here is the source code for ar.edu.taco.simplejml.methodinfo.MethodInformationBuilder.java

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/*
 * TACO: Translation of Annotated COde
 * Copyright (c) 2010 Universidad de Buenos Aires
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA,
 * 02110-1301, USA
 */
package ar.edu.taco.simplejml.methodinfo;

import org.apache.commons.lang.StringUtils;
import org.multijava.mjc.CStdType;
import org.multijava.mjc.CType;
import org.multijava.mjc.JLocalVariableExpression;
import org.multijava.mjc.JMethodCallExpression;
import org.multijava.mjc.JNameExpression;

import ar.edu.taco.simplejml.helpers.JavaClassNameNormalizer;

/**
 * @author elgaby
 *
 */
public class MethodInformationBuilder {
    private static MethodInformationBuilder INSTANCE;

    //   private Map<String, MethodInformation> methods;

    private MethodInformationBuilder() {
    }

    public static MethodInformationBuilder getInstance() {
        if (INSTANCE == null) {
            INSTANCE = new MethodInformationBuilder();
        }
        return INSTANCE;
    }

    public MethodInformation getMethodInformation(JMethodCallExpression jMethodCallExpression) {
        ConcreteMethodInformation concreteMethodInformation = null;

        if (jMethodCallExpression.method() != null) {
            concreteMethodInformation = new ConcreteMethodInformation();

            boolean isStatic = jMethodCallExpression.method().isStatic();
            boolean isModelMethod = (jMethodCallExpression.prefix() == null)
                    && (jMethodCallExpression.method() == null);
            boolean isConstructor = jMethodCallExpression.method().isConstructor();

            concreteMethodInformation.setStatic(isStatic);
            concreteMethodInformation.setConstructor(isConstructor);
            concreteMethodInformation.setModelMethod(isModelMethod);
            if (jMethodCallExpression.getType() != null) {
                CType cType = jMethodCallExpression.getType();
                concreteMethodInformation.setReturnType(cType);
            }

            JavaClassNameNormalizer classNameNormalizer = new JavaClassNameNormalizer(
                    jMethodCallExpression.method().receiverType().toVerboseString());
            concreteMethodInformation.setQualifiedReceiverType(classNameNormalizer.getQualifiedClassName());

        } else if (jMethodCallExpression.prefix() instanceof JLocalVariableExpression
                || jMethodCallExpression.prefix() instanceof JNameExpression) {
            concreteMethodInformation = new ConcreteMethodInformation();

            concreteMethodInformation.setStatic(false);
            concreteMethodInformation.setConstructor(false);
            concreteMethodInformation.setModelMethod(true);
            if (jMethodCallExpression.getType() != null) {
                CType cType = jMethodCallExpression.getType();
                concreteMethodInformation.setReturnType(cType);
            } else {

                concreteMethodInformation.setReturnType(CStdType.Object);
            }

        } else {
            String className = getCapitalizedClassName(jMethodCallExpression.prefix().toString());
            try {
                String packageName = MethodInformationSupplier.class.getPackage().getName();
                MethodInformationSupplier methodInformationSupplier = (MethodInformationSupplier) Class
                        .forName(packageName + ".MI_" + className).newInstance();
                concreteMethodInformation = methodInformationSupplier
                        .getInformationForMethod(jMethodCallExpression.ident());
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }
        }

        return concreteMethodInformation;
    }

    private String getCapitalizedClassName(String className) {
        StringBuffer capitalizedClassName = new StringBuffer();
        String[] classNameParts = className.split("/");

        for (String aString : classNameParts) {
            capitalizedClassName.append(StringUtils.capitalize(aString));
        }
        return capitalizedClassName.toString();
    }

}