SignatureInfoImpl.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.plugin.languageserver.ide.editor.signature;

import com.google.common.base.Optional;

import org.eclipse.che.ide.api.editor.signature.ParameterInfo;
import org.eclipse.che.ide.api.editor.signature.SignatureInfo;
import org.eclipse.lsp4j.ParameterInformation;
import org.eclipse.lsp4j.SignatureInformation;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Evgen Vidolob
 */
class SignatureInfoImpl implements SignatureInfo {


    private final SignatureInformation dto;

    private List<ParameterInfo> parameterInfos;

    public SignatureInfoImpl(SignatureInformation dto) {
        this.dto = dto;
    }

    @Override
    public String getLabel() {
        return dto.getLabel();
    }

    @Override
    public Optional<String> getDocumentation() {
        return Optional.fromNullable(dto.getDocumentation());
    }

    @Override
    public Optional<List<ParameterInfo>> getParameters() {
        if (parameterInfos == null && dto.getParameters() != null) {
            parameterInfos = new ArrayList<>(dto.getParameters().size());
            for (ParameterInformation informationDTO : dto.getParameters()) {
                parameterInfos.add(new ParamterInfoImpl(informationDTO));
            }
            return Optional.of(parameterInfos);
        }
        return Optional.fromNullable(parameterInfos);
    }
}