IScanner

Description

The IScanner interface defines a scanner that can read and unread characters and count lines.

Instance methods

column

Gets the column in the current line.

int column()

• returns: int - column in the current line in the stream.

line

Gets the current line number

int line()

• returns: int - current line number in the stream

peek

Returns the character from the top of the stream without moving the stream pointer.

int peek()

• returns: int - character from the top of the stream or -1 if the stream is empty.

peekColumn

Gets the next character column number.

int peekColumn()

• returns: int - next character column number in the stream.

peekLine

Gets the next character line number.

int peekLine()

• returns: int - next character line number in the stream.

read

Reads a character from the top of the stream.

int read()

• returns: int - read character or -1 if the stream is processed to the end.

reset

Resets a scanner to the initial position.

void reset()

unread

Puts a character back into the stream.

void unread()

unreadMany

Pushes the specified number of characters to the top of the stream.

void unreadMany(int count)

• count: int - number of characcted to be pushed back.