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X-definition 4.2 (Open Source Software)
There is a newer version: 42.2.13
package org.xdef.impl.code;

import org.xdef.XDValue;
import org.xdef.XDValueAbstract;
import static org.xdef.XDValueID.XD_OBJECT;
import static org.xdef.XDValueID.X_PARSEITEM;
import org.xdef.XDValueType;
import static org.xdef.XDValueType.XPARSEITEM;

/** Implements uniqueSet parse item.
 * @author Vaclav Trojan
 */
public final class ParseItem extends XDValueAbstract {

	/** Address of check method. */
	private final int _parseMethodAddr;
	/** Type of parsed object. */
	private final short _itemType;
	/** True if this key is optional, false if it is required. */
	private final boolean _optional;
	/** Key name. */
	final String _name;
	/** Reference name to declared type or null. */
	private final String _refName;
	/** Resulting value of parsing. */
	XDValue _itemValue;
	/** Index of key item. */
	private final int _keyIndex;

	/** Creates a new null instance of UniquesetParseItem. */
	ParseItem() {this(null, null, -1, -1, XD_OBJECT, false);}

	/** Creates a new instance of UniquesetParseItem (must be public
	 * because of XDReader).
	 * @param name name of parse item or null;
	 * @param chkAddr address of code of the method.
	 * @param refName name of type;
	 * @param keyIndex index of this key part
	 * @param parsedType type of id.
	 * @param optional if true this key value is required or return
	 * false if it is optional
	 */
	public ParseItem(final String name,
		final String refName,
		final int chkAddr,
		final int keyIndex,
		final short parsedType,
		final boolean optional) {
		_name = name;
		_refName = refName;
		_parseMethodAddr = chkAddr;
		_keyIndex = keyIndex;
		_itemType = parsedType;
		_optional = optional;
		// _itemValue = null; // java mekes it
	}

	////////////////////////////////////////////////////////////////////////
	// Implementation of XDUniquesetParseItem interface
	////////////////////////////////////////////////////////////////////////

	/** Get address of parsing method.
	 * @return the address of code.
	 */
	public final int getParseMethodAddr() {return _parseMethodAddr;}

	/** Get parsed type.
	 * @return the type id.
	 */
	public final short getParsedType() {return _itemType;}

	/** Get parsed type.
	 * @return the type id.
	 */
	public final String getParseName() {return _name;}

	/** Get reference name to declared type.
	 * @return reference name to declared type or null.
	 */
	public final String getDeclaredTypeName() {return _refName;}

	/** Set parsed object (used in XDCodeProcessor).
	 * @param val the value of parsed object.
	 */
	public final void setParsedObject(XDValue val) {_itemValue = val;}

	/** Check if this item is optional or required.
	 * @return true if this item is required.
	 */
	public final boolean isOptional() {return _optional;}

	////////////////////////////////////////////////////////////////////////
	// Implementation of XDValue interface
	////////////////////////////////////////////////////////////////////////

	@Override
	public final short getItemId() {return X_PARSEITEM;}

	@Override
	/** Get ID of the type of value
	 * @return enumeration item of this type.
	 */
	public XDValueType getItemType() {return XPARSEITEM;}

	@Override
	public String toString() {
		return ("[" + _keyIndex + "]" + (_name == null ? "null"
			: ((!_name.isEmpty() ? ":" +_name : "") + "=" + _itemValue)))
			+ "; method addr: " + _parseMethodAddr + "; refName: " + _refName;
	}

	@Override
	public final String stringValue() {return _itemValue.stringValue();}

	@Override
	public final XDValue cloneItem() {
		return new ParseItem(_name,
			_refName, _parseMethodAddr, _keyIndex, _itemType, _optional);
	}

	@Override
	public final boolean isNull() {return _parseMethodAddr == -1;}

	@Override
	public int hashCode() {return _name.hashCode();}

	@Override
	public boolean equals(final Object arg) {
		 return arg != null && arg instanceof XDValue
			 ? equals((XDValue) arg) : false;
	}

	@Override
	public final boolean equals(final XDValue arg) {
		return arg == null ? false
			: arg.getItemId() != X_PARSEITEM ? false
			: _name != null ? _name.equals(((ParseItem)arg)._name)
			: ((ParseItem) arg)._name == null;
	}

	////////////////////////////////////////////////////////////////////////
	// Methods used in CodeUniqueset.
	////////////////////////////////////////////////////////////////////////

	/** Get index of actual uniqueSet parse item.
	 * @return parse item index.
	 */
	public final int getKeyIndex() {return _keyIndex;}

	/** Get object of actual uniqueSet parse item.
	 * @return value of parsed object or null.
	 */
	final XDValue getParsedObject() {return _itemValue;}
}