public interface CharStream extends CharStream
Modifier and Type | Method and Description |
---|---|
void |
backup(int amount)
Backs up the input stream by amount steps.
|
char |
BeginToken()
Returns the next character that marks the beginning of the next token.
|
void |
Done()
The lexer calls this function to indicate that it is done with the stream
and hence implementations can free any resources held by this class.
|
int |
getBeginColumn()
Returns the column number of the first character for current token (being
matched after the last call to BeginTOken).
|
int |
getBeginLine()
Returns the line number of the first character for current token (being
matched after the last call to BeginTOken).
|
int |
getColumn()
Deprecated.
|
int |
getEndColumn()
Returns the column number of the last character for current token (being
matched after the last call to BeginTOken).
|
int |
getEndLine()
Returns the line number of the last character for current token (being
matched after the last call to BeginTOken).
|
java.lang.String |
GetImage()
Returns a string made up of characters from the marked token beginning
to the current buffer position.
|
int |
getLine()
Deprecated.
|
char[] |
GetSuffix(int len)
Returns an array of characters that make up the suffix of length 'len' for
the currently matched token.
|
char |
readChar()
Returns the next character from the selected input.
|
char readChar() throws java.io.IOException
readChar
in interface CharStream
java.io.IOException
int getColumn()
getColumn
in interface CharStream
getEndColumn()
int getLine()
getLine
in interface CharStream
getEndLine()
int getEndColumn()
getEndColumn
in interface CharStream
int getEndLine()
getEndLine
in interface CharStream
int getBeginColumn()
getBeginColumn
in interface CharStream
int getBeginLine()
getBeginLine
in interface CharStream
void backup(int amount)
backup
in interface CharStream
char BeginToken() throws java.io.IOException
BeginToken
in interface CharStream
java.io.IOException
java.lang.String GetImage()
GetImage
in interface CharStream
char[] GetSuffix(int len)
GetSuffix
in interface CharStream
void Done()
Done
in interface CharStream