src.java.org.codehaus.jackson.JsonReadContext Maven / Gradle / Ivy
/* Jackson JSON-processor.
*
* Copyright (c) 2007- Tatu Saloranta, [email protected]
*
* Licensed under the License specified in file LICENSE, included with
* the source code and binary code bundles.
* You may not use this file except in compliance with the License.
*
* 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 org.codehaus.jackson;
import org.codehaus.jackson.util.CharTypes;
/**
* Context object is used to keep track of relative logical position
* of the current event when parsing, as well as current state regarding
* separators and field name/value sequencing.
*
* Note: implementation is bit ugly, as sub-classing is replaced by
* state variables. This is done due to performance benefits; essentially
* this allows for more aggeressive inlining by JVM.
*/
public abstract class JsonReadContext
extends JsonContext
{
// // // Location information (minus source reference)
//long mTotalChars;
protected int _lineNr;
protected int _columnNr;
protected String _currentName;
/*
//////////////////////////////////////////////////
// Life-cycle
//////////////////////////////////////////////////
*/
public JsonReadContext(int type, int lineNr, int colNr)
{
super(type);
_type = type;
_lineNr = lineNr;
_columnNr = colNr;
}
/*
//////////////////////////////////////////////////
// Public API, accessors
//////////////////////////////////////////////////
*/
// note: co-variant
@Override
public abstract JsonReadContext getParent();
/**
* @return Location pointing to the point where the context
* start marker was found
*/
public final JsonLocation getStartLocation(Object srcRef)
{
/* We don't keep track of offsets at this level (only
* reader does)
*/
long totalChars = -1L;
return new JsonLocation(srcRef, totalChars, _lineNr, _columnNr);
}
public final String getCurrentName() { return _currentName; }
// // // Overridden standard methods
/**
* Overridden to provide developer readable "JsonPath" representation
* of the context.
*/
public final String toString()
{
StringBuilder sb = new StringBuilder(64);
switch (_type) {
case TYPE_ROOT:
sb.append("/");
break;
case TYPE_ARRAY:
sb.append('[');
sb.append(getCurrentIndex());
sb.append(']');
break;
case TYPE_OBJECT:
sb.append('{');
if (_currentName != null) {
sb.append('"');
CharTypes.appendQuoted(sb, _currentName);
sb.append('"');
} else {
sb.append('?');
}
sb.append(']');
break;
}
return sb.toString();
}
}