com.caoccao.javet.interop.converters.JavetPrimitiveConverter Maven / Gradle / Ivy

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Javet is Java + V8 (JAVa + V + EighT). It is an awesome way of embedding Node.js and V8 in Java.
There is a newer version: 4.0.0
/*
 * Copyright (c) 2021-2023. caoccao.com Sam Cao
 *
 * 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 com.caoccao.javet.interop.converters;

import com.caoccao.javet.annotations.CheckReturnValue;
import com.caoccao.javet.exceptions.JavetException;
import com.caoccao.javet.interop.V8Runtime;
import com.caoccao.javet.values.V8Value;
import com.caoccao.javet.values.primitive.V8ValuePrimitive;

import java.math.BigInteger;
import java.time.ZonedDateTime;
import java.util.Optional;
import java.util.OptionalDouble;
import java.util.OptionalInt;
import java.util.OptionalLong;

/**
 * The type Javet primitive converter converts Java primitive types
 * to JS primitive types bi-directionally.
 *
 * @since 0.7.1
 */
@SuppressWarnings("unchecked")
public class JavetPrimitiveConverter extends BaseJavetConverter {
    /**
     * Instantiates a new Javet primitive converter.
     *
     * @since 0.7.1
     */
    public JavetPrimitiveConverter() {
        super();
    }

    @Override
    protected  T toObject(V8Value v8Value, final int depth) throws JavetException {
        validateDepth(depth);
        if (v8Value == null || v8Value.isNull() || v8Value.isUndefined()) {
            return null;
        } else if (v8Value instanceof V8ValuePrimitive) {
            return (T) ((V8ValuePrimitive) v8Value).getValue();
        }
        return (T) v8Value;
    }

    @SuppressWarnings("ConstantConditions")
    @Override
    @CheckReturnValue
    protected  T toV8Value(
            V8Runtime v8Runtime, Object object, final int depth) throws JavetException {
        validateDepth(depth);
        /*
         * The following test is based on statistical analysis
         * so that the performance can be maximized.
         */
        V8Value v8Value;
        if (object == null) {
            v8Value = v8Runtime.createV8ValueNull();
        } else if (object.getClass().isPrimitive()) {
            Class objectClass = object.getClass();
            if (objectClass == int.class) {
                v8Value = v8Runtime.createV8ValueInteger((int) object);
            } else if (objectClass == boolean.class) {
                v8Value = v8Runtime.createV8ValueBoolean((boolean) object);
            } else if (objectClass == double.class) {
                v8Value = v8Runtime.createV8ValueDouble((double) object);
            } else if (objectClass == float.class) {
                v8Value = v8Runtime.createV8ValueDouble((double) object);
            } else if (objectClass == long.class) {
                v8Value = v8Runtime.createV8ValueLong((long) object);
            } else if (objectClass == short.class) {
                v8Value = v8Runtime.createV8ValueInteger((int) object);
            } else if (objectClass == byte.class) {
                v8Value = v8Runtime.createV8ValueInteger((int) object);
            } else if (objectClass == char.class) {
                v8Value = v8Runtime.createV8ValueString(Character.toString((char) object));
            } else {
                v8Value = v8Runtime.createV8ValueUndefined();
            }
        } else if (object instanceof V8Value) {
            v8Value = (V8Value) object;
        } else if (object instanceof Integer) {
            v8Value = v8Runtime.createV8ValueInteger((Integer) object);
        } else if (object instanceof Boolean) {
            v8Value = v8Runtime.createV8ValueBoolean((Boolean) object);
        } else if (object instanceof String) {
            v8Value = v8Runtime.createV8ValueString((String) object);
        } else if (object instanceof Double) {
            v8Value = v8Runtime.createV8ValueDouble((Double) object);
        } else if (object instanceof Float) {
            v8Value = v8Runtime.createV8ValueDouble((Float) object);
        } else if (object instanceof Long) {
            v8Value = v8Runtime.createV8ValueLong((Long) object);
        } else if (object instanceof Short) {
            v8Value = v8Runtime.createV8ValueInteger((Short) object);
        } else if (object instanceof ZonedDateTime) {
            v8Value = v8Runtime.createV8ValueZonedDateTime((ZonedDateTime) object);
        } else if (object instanceof Byte) {
            v8Value = v8Runtime.createV8ValueInteger((Byte) object);
        } else if (object instanceof Character) {
            v8Value = v8Runtime.createV8ValueString(((Character) object).toString());
        } else if (object instanceof BigInteger) {
            v8Value = v8Runtime.createV8ValueBigInteger((BigInteger) object);
        } else if (object instanceof Optional) {
            Optional optional = (Optional) object;
            v8Value = optional.isPresent() ? toV8Value(v8Runtime, optional.get(), depth) : v8Runtime.createV8ValueNull();
        } else if (object instanceof OptionalInt) {
            OptionalInt optional = (OptionalInt) object;
            v8Value = optional.isPresent() ? toV8Value(v8Runtime, optional.getAsInt(), depth) : v8Runtime.createV8ValueNull();
        } else if (object instanceof OptionalDouble) {
            OptionalDouble optional = (OptionalDouble) object;
            v8Value = optional.isPresent() ? toV8Value(v8Runtime, optional.getAsDouble(), depth) : v8Runtime.createV8ValueNull();
        } else if (object instanceof OptionalLong) {
            OptionalLong optional = (OptionalLong) object;
            v8Value = optional.isPresent() ? toV8Value(v8Runtime, optional.getAsLong(), depth) : v8Runtime.createV8ValueNull();
        } else {
            v8Value = v8Runtime.createV8ValueUndefined();
        }
        return (T) v8Value;
    }
}