Defines a scanner that can read and unread characters and count lines. This scanner is used by tokenizers to process input streams.
Description
The IScanner interface defines a scanner that can read and unread characters and count lines.
Methods
Сolumn
Gets the column in the current line.
Column() int
- returns: int - column in the current line in the stream.
Line
Gets the current line number
Line() int
- returns: int - current line number in the stream
Peek
Returns the character from the top of the stream without moving the stream pointer.
Peek() rune
- returns: rune - character from the top of the stream or -1 if the stream is empty.
PeekColumn
Gets the next character column number.
PeekColumn() int
- returns: int - next character column number in the stream.
PeekLine
Gets the next character line number.
PeekLine() int
- returns: int - next character line number in the stream.
Read
Reads a character from the top of the stream.
Read() rune
- returns: rune - read character or -1 if the stream is processed to the end.
Reset
Resets a scanner to the initial position.
Reset()
Unread
Puts a character back into the stream.
Unread()
UnreadMany
Pushes the specified number of characters to the top of the stream.
UnreadMany(count int)
- count: int - number of characters to be pushed back.