org.eclipse.lsp4j.adapters.CodeActionResponseAdapter.java Source code

Introduction

Here is the source code for org.eclipse.lsp4j.adapters.CodeActionResponseAdapter.java

Source

/******************************************************************************
 * Copyright (c) 2018 TypeFox and others.
 * 
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 * 
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 ******************************************************************************/
package org.eclipse.lsp4j.adapters;

import java.util.ArrayList;
import java.util.function.Predicate;

import org.eclipse.lsp4j.CodeAction;
import org.eclipse.lsp4j.Command;
import org.eclipse.lsp4j.jsonrpc.json.adapters.CollectionTypeAdapter;
import org.eclipse.lsp4j.jsonrpc.json.adapters.EitherTypeAdapter;
import org.eclipse.lsp4j.jsonrpc.json.adapters.EitherTypeAdapter.PropertyChecker;
import org.eclipse.lsp4j.jsonrpc.messages.Either;

import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;
import com.google.gson.TypeAdapter;
import com.google.gson.TypeAdapterFactory;
import com.google.gson.reflect.TypeToken;

public class CodeActionResponseAdapter implements TypeAdapterFactory {

    private static final TypeToken<Either<Command, CodeAction>> ELEMENT_TYPE = new TypeToken<Either<Command, CodeAction>>() {
    };

    @SuppressWarnings("unchecked")
    @Override
    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
        Predicate<JsonElement> leftChecker = new PropertyChecker("command", JsonPrimitive.class);
        Predicate<JsonElement> rightChecker = new PropertyChecker("edit")
                .or(new PropertyChecker("command", JsonObject.class));
        TypeAdapter<Either<Command, CodeAction>> elementTypeAdapter = new EitherTypeAdapter<>(gson, ELEMENT_TYPE,
                leftChecker, rightChecker);
        return (TypeAdapter<T>) new CollectionTypeAdapter<>(gson, ELEMENT_TYPE.getType(), elementTypeAdapter,
                ArrayList::new);
    }

}