Constructs an instance from the given input string and reason.
Constructs an instance from the given input string, reason, and error index.
Returns an index into the input string of the position at which the parse error occurred, or -1 if this position is not known.
Returns a string describing the parse error.
Returns a string explaining why the input string could not be parsed.
Constructs an instance from the given input string and reason. The resulting object will have an error index of -1.
Returns a string describing the parse error. The resulting string consists of the reason string followed by a colon character (':'), a space, and the input string. If the error index is defined then the string " at index " followed by the index, in decimal, is inserted after the reason string and before the colon character.