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package net.minidev.json.parser;

/*
 *    Copyright 2011-2023 JSON-SMART authors
 *
 * 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.
 */
import static net.minidev.json.parser.ParseException.ERROR_UNEXPECTED_EOF;
import net.minidev.json.JSONValue;
import net.minidev.json.writer.JsonReaderI;

/**
 * Parser for JSON text. Please note that JSONParser is NOT thread-safe.
 * 
 * @author Uriel Chemouni <[email protected]>
 */
class JSONParserString extends JSONParserMemory {
	private String in;

	public JSONParserString(int permissiveMode) {
		super(permissiveMode);
	}

	/**
	 * use to return Primitive Type, or String, Or JsonObject or JsonArray
	 * generated by a ContainerFactory
	 */
	public Object parse(String in) throws ParseException {
		return parse(in, JSONValue.defaultReader.DEFAULT);
	}

	//
	//
	//
	//
	//
	//
	//

	/**
	 * use to return Primitive Type, or String, Or JsonObject or JsonArray
	 * generated by a ContainerFactory
	 */
	public  T parse(String in, JsonReaderI mapper) throws ParseException {
		this.base = mapper.base;
		this.in = in;
		this.len = in.length();
		return parse(mapper);
	}

	protected void extractString(int beginIndex, int endIndex) {
		xs = in.substring(beginIndex, endIndex);
	}

	protected void extractStringTrim(int start, int stop) {
		while (start < stop-1 && Character.isWhitespace(in.charAt(start))) {
			start++;
		}
		while (stop-1 > start && Character.isWhitespace(in.charAt(stop-1))) {
			stop--;
		}
		extractString(start, stop);
	}

	protected int indexOf(char c, int pos) {
		return in.indexOf(c, pos);
	}

	/**
	 * Read next char or END OF INPUT
	 */
	protected void read() {
		if (++pos >= len)
			this.c = EOI;
		else
			this.c = in.charAt(pos);
	}

	/**
	 * Same as read() in memory parsing
	 */
	protected void readS() {
		if (++pos >= len)
			this.c = EOI;
		else
			this.c = in.charAt(pos);
	}

	/**
	 * read data can not be EOI
	 */
	protected void readNoEnd() throws ParseException {
		if (++pos >= len) {
			this.c = EOI;
			throw new ParseException(pos - 1, ERROR_UNEXPECTED_EOF, "EOF");
		} else
			this.c = in.charAt(pos);
	}
}