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Simple JSON data structure manipulating library

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/*
 * Copyright 2018 Anton Straka
 *
 * 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 sk.antons.json.literal.impl;

import java.math.BigDecimal;
import sk.antons.json.JsonValue;
import sk.antons.json.literal.JsonExpLiteral;

/**
 *
 * @author antons
 */
public class JsonExpLiteralImpl extends JsonLiteralImpl implements JsonExpLiteral {
    
    private boolean cachedValue = false;
    private BigDecimal cachedValueBd = null;
    private int dotPos = -1;
    private int ePos = -1;
    
    public JsonExpLiteralImpl(BigDecimal bd) {
        super(bd.toEngineeringString());
        int pos = literal.indexOf(".");
        dotPos = pos;
        pos = literal.indexOf("E");
        if(pos < 0) {
            ePos = literal.length();
            literal = literal + "E1";
        } else ePos = pos;
    }
    
    public JsonExpLiteralImpl(String literal, int offset, int length, int dotPos, int ePos) {
        super(literal, offset, length);
        this.dotPos = dotPos;
        this.ePos = ePos;
    }

    @Override
    public Type type() { return Type.EXP; }
    
    public BigDecimal bdValue() {
        if(cachedValue) return cachedValueBd;
        cachedValueBd = new BigDecimal(stringValue());
        cachedValue = true;
        return cachedValueBd;
    }
    
    @Override
    public JsonValue copy() {
        return new JsonExpLiteralImpl(literal, offset, length, dotPos, ePos);
    }
    
    @Override
    public Object asTemplateParam() {
        return bdValue();
    }
}