Class LetterState

public LetterState(AbstractParser parser,
                   char matchLetter,
                   AbstractParserState nextStateArg,
                   AbstractParserState noMatchStateArg)

Constructor.

Parameters:

parser - parser

matchLetter - letter to match

nextStateArg - next state if a match on the letter

noMatchStateArg - state if no match on letter

public AbstractParserState consume(char ch)

Consumes a character and returns the next state for the parser.

Overrides:

consume in interface AbstractParserState

Parameters:

ch - next character

Returns:

the configured nextState if ch is the expected character or the configure noMatchState otherwise.