src.java.org.codehaus.jackson.JsonToken Maven / Gradle / Ivy
package org.codehaus.jackson;
/**
* This enumeration defines basic token types used for returning results
* of parsing JSON content.
*/
public enum JsonToken
{
/**
* START_OBJECT is returned when encountering '{'
* which signals starting of an Object value
*/
START_OBJECT("{"),
/**
* START_OBJECT is returned when encountering '}'
* which signals ending of an Object value
*/
END_OBJECT("}"),
/**
* START_OBJECT is returned when encountering '['
* which signals starting of an Array value
*/
START_ARRAY("["),
/**
* START_OBJECT is returned when encountering ']'
* which signals ending of an Array value
*/
END_ARRAY("]"),
/**
* FIELD_NAME is returned when a String token is encountered
* as a field name (same lexical value, different function)
*/
FIELD_NAME(null),
/**
* VALUE_STRING is returned when a String token is encountered
* in value context (array element, field value, or root-level
* stand-alone value)
*/
VALUE_STRING(null),
/**
* VALUE_NUMBER_INT is returned when an integer numeric token is
* encountered in value context: that is, a number that does
* not have floating point or exponent marker in it (consists
* only of an optional sign, followed by one or more digits)
*/
VALUE_NUMBER_INT(null),
/**
* VALUE_NUMBER_INT is returned when a numeric token other
* that is not an integer is encountered: that is, a number that does
* have floating point or exponent marker in it, in addition
* to one or more digits.
*/
VALUE_NUMBER_FLOAT(null),
/**
* VALUE_TRUE is returned when encountering literal "true" in
* value context
*/
VALUE_TRUE("true"),
/**
* VALUE_FALSE is returned when encountering literal "false" in
* value context
*/
VALUE_FALSE("false"),
/**
* VALUE_NULL is returned when encountering literal "null" in
* value context
*/
VALUE_NULL("null");
final String mSerialized;
final char[] mSerializedChars;
final byte[] mSerializedBytes;
/**
* @param Textual representation for this token, if there is a
* single static representation; null otherwise
*/
JsonToken(String token)
{
if (token == null) {
mSerialized = null;
mSerializedChars = null;
mSerializedBytes = null;
} else {
mSerialized = token;
mSerializedChars = token.toCharArray();
// It's all in ascii, can just case...
int len = mSerializedChars.length;
mSerializedBytes = new byte[len];
for (int i = 0; i < len; ++i) {
mSerializedBytes[i] = (byte) mSerializedChars[i];
}
}
}
public String asString() { return mSerialized; }
public char[] asCharArray() { return mSerializedChars; }
public byte[] asByteArray() { return mSerializedBytes; }
public boolean isNumeric() {
return (this == VALUE_NUMBER_INT) || (this == VALUE_NUMBER_FLOAT);
}
}