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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 java.text;
/**
* Tracks the current position in a parsed string. In case of an error the error
* index can be set to the position where the error occurred without having to
* change the parse position.
*/
public class ParsePosition {
private int currentPosition, errorIndex = -1;
/**
* Constructs a new {@code ParsePosition} with the specified index.
*
* @param index
* the index to begin parsing.
*/
public ParsePosition(int index) {
currentPosition = index;
}
/**
* Compares the specified object to this {@code ParsePosition} and indicates
* if they are equal. In order to be equal, {@code object} must be an
* instance of {@code ParsePosition} and it must have the same index and
* error index.
*
* @param object
* the object to compare with this object.
* @return {@code true} if the specified object is equal to this
* {@code ParsePosition}; {@code false} otherwise.
* @see #hashCode
*/
@Override
public boolean equals(Object object) {
if (!(object instanceof ParsePosition)) {
return false;
}
ParsePosition pos = (ParsePosition) object;
return currentPosition == pos.currentPosition
&& errorIndex == pos.errorIndex;
}
/**
* Returns the index at which the parse could not continue.
*
* @return the index of the parse error or -1 if there is no error.
*/
public int getErrorIndex() {
return errorIndex;
}
/**
* Returns the current parse position.
*
* @return the current position.
*/
public int getIndex() {
return currentPosition;
}
@Override
public int hashCode() {
return currentPosition + errorIndex;
}
/**
* Sets the index at which the parse could not continue.
*
* @param index
* the index of the parse error.
*/
public void setErrorIndex(int index) {
errorIndex = index;
}
/**
* Sets the current parse position.
*
* @param index
* the current parse position.
*/
public void setIndex(int index) {
currentPosition = index;
}
/**
* Returns the string representation of this parse position.
*
* @return the string representation of this parse position.
*/
@Override
public String toString() {
return getClass().getName() + "[index=" + currentPosition
+ ", errorIndex=" + errorIndex + "]";
}
}
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