public class Optional extends Token
toBeParsed| Constructor and Description |
|---|
Optional(Token opt)
Standard constructor
|
Optional(Token opt,
LineToParse l)
Standard constructor with line to parse
|
| Modifier and Type | Method and Description |
|---|---|
boolean |
canParse()
can this token be parsed? is the next character
of toBeParsed consistent with the requested parsing task?
no changes to LineToParse are made
|
void |
consumeToken()
consume the next token if canParse()==true ; token is stored
in LinetoParse object
|
java.lang.String |
getEmsg() |
Optional |
klone(LineToParse l)
return copy of 'this'
|
void |
parse()
actually parse toBeParsed given requested parsing task
|
setLineToParsepublic Optional(Token opt)
opt - -- token that could be optionalpublic Optional(Token opt, LineToParse l)
opt - -- token that could be optionall - -- line to parsepublic boolean canParse()
Tokenpublic void consumeToken()
TokenconsumeToken in class Tokenpublic void parse()
Tokenpublic Optional klone(LineToParse l)
Token