de.csenk.gwt.commons.bean.rebind.SourceGeneration.java Source code

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Here is the source code for de.csenk.gwt.commons.bean.rebind.SourceGeneration.java

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/*
 * Copyright 2012 Christian Senk
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.csenk.gwt.commons.bean.rebind;

import java.util.List;

import javax.annotation.Nullable;

import com.google.common.base.Function;
import com.google.common.base.Joiner;
import com.google.common.collect.Lists;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.core.ext.typeinfo.JParameter;
import com.google.gwt.core.ext.typeinfo.JType;
import com.google.gwt.editor.rebind.model.ModelUtils;

/**
 * @author senk.christian@googlemail.com
 *
 */
public final class SourceGeneration {

    /**
     * 
     */
    private SourceGeneration() {
    }

    /**
     * @param method
     * @return
     */
    public static String getBaseMethodDeclaration(JMethod method) {
        final List<String> paramDeclarations = Lists.transform(Lists.newArrayList(method.getParameters()),
                new Function<JParameter, String>() {

                    @Override
                    @Nullable
                    public String apply(@Nullable JParameter input) {
                        return String.format("%s %s", ModelUtils.getQualifiedBaseSourceName(input.getType()),
                                input.getName());
                    }

                });

        final List<String> throwDeclarations = Lists.transform(Lists.newArrayList(method.getThrows()),
                new Function<JType, String>() {

                    @Override
                    @Nullable
                    public String apply(@Nullable JType input) {
                        return ModelUtils.getQualifiedBaseSourceName(input);
                    }

                });

        final String paramListDeclaration = Joiner.on(", ").join(paramDeclarations);
        final String throwsDeclaration = throwDeclarations.size() > 0
                ? String.format("throws %s", Joiner.on(", ").join(throwDeclarations))
                : "";
        final String returnName = ModelUtils.getQualifiedBaseSourceName(method.getReturnType());

        return String.format("%s %s(%s) %s", returnName, method.getName(), paramListDeclaration, throwsDeclaration);
    }

}