import com.sun.xml.internal.fastinfoset.stax.StAXDocumentParser; //导入依赖的package包/类
/**
 * Create a new (@link StAXDocumentParser} instance.
 *
 * @param in the InputStream to parse from.
 * @param retainState if true the parser should retain the state of
 *        vocabulary tables for multiple parses.
 * @return a new {@link StAXDocumentParser} instance.
 */
/* package */ static StAXDocumentParser createNewStreamReader(InputStream in, boolean retainState) {
    StAXDocumentParser parser = new StAXDocumentParser(in);
    parser.setStringInterning(true);
    if (retainState) {
        /**
         * Create a parser vocabulary external to the parser.
         * This will ensure that the vocabulary will never be cleared
         * for each parse and will be retained (and will grow)
         * for each parse.
         */
        ParserVocabulary vocabulary = new ParserVocabulary();
        parser.setVocabulary(vocabulary);
    }
    return parser;
}
 

import com.sun.xml.internal.fastinfoset.stax.StAXDocumentParser; //导入依赖的package包/类
/**
 * Create a new (@link StAXDocumentParser} recyclable instance.
 *
 * @param in the InputStream to parse from.
 * @param retainState if true the parser should retain the state of
 *        vocabulary tables for multiple parses.
 * @return a new recyclable {@link StAXDocumentParser} instance.
 */
/* package */ static StAXDocumentParser createNewStreamReaderRecyclable(InputStream in, boolean retainState) {
    StAXDocumentParser parser = new FastInfosetStreamReaderRecyclable(in);
    parser.setStringInterning(true);
    parser.setForceStreamClose(true);
    if (retainState) {
        /**
         * Create a parser vocabulary external to the parser.
         * This will ensure that the vocabulary will never be cleared
         * for each parse and will be retained (and will grow)
         * for each parse.
         */
        ParserVocabulary vocabulary = new ParserVocabulary();
        parser.setVocabulary(vocabulary);
    }
    return parser;
}
 

import com.sun.xml.internal.fastinfoset.stax.StAXDocumentParser; //导入依赖的package包/类
public XMLStreamReader doCreate(String systemId, InputStream in, boolean rejectDTDs) {
    StAXDocumentParser parser = fetch();
    if (parser == null) {
        return FastInfosetCodec.createNewStreamReaderRecyclable(in, false);
    }

    parser.setInputStream(in);
    return parser;
}
 

import com.sun.xml.internal.fastinfoset.stax.StAXDocumentParser; //导入依赖的package包/类
private StAXDocumentParser fetch() {
    StAXDocumentParser parser = pool.get();
    pool.set(null);
    return parser;
}
 

import com.sun.xml.internal.fastinfoset.stax.StAXDocumentParser; //导入依赖的package包/类
public void doRecycle(XMLStreamReader r) {
    if (r instanceof StAXDocumentParser) {
        pool.set((StAXDocumentParser) r);
    }
}
 

import com.sun.xml.internal.fastinfoset.stax.StAXDocumentParser; //导入依赖的package包/类
public FastInfosetConnector(StAXDocumentParser fastInfosetStreamReader,
        XmlVisitor visitor) {
    super(visitor);
    fastInfosetStreamReader.setStringInterning(true);
    this.fastInfosetStreamReader = fastInfosetStreamReader;
}