src Int find(Int ch)

Scan until we find the given ch. Return the number of characters skipped, or -1 if we hit the end of the line.

src Int findMatch(|Int->Bool| f)

Consume characters until the given function returns true, or the end-of-line is reached. Return the number of characters skipped, or -1 if we reach the end.

src Bool hasNext()

Are there more characters to consume

src new make(SourceLine[] lines, Int lineIndex := 0, Int index := 0)

src new makeLine(SourceLine line)

src new makeSourceLines(SourceLines sourceLines)

src Int match(|Int->Bool| f)

Consume characters while the given function returns true and return the number of characters consumed.

src Int matchMultiple(Int ch)

Consume as many ch in a row as possible and return the number consumed.

src Void next()

Advance the scanner to the next character

src Bool nextCh(Int ch)

Check if the specified char is next and advance the position.

ch: the char to check (including newline chars)

Return true if matched and position was advanced; false otherwise

src Bool nextStr(Str content)

Check if we have the specified content on the line and advance the position. Note that if you want to match newline characters, use nextCh.

content: the text content to match on a single line (excluding newline)

Return true if matched and position was advanced; false otherwise

src Int peek()

Peek at the next character without consuming it

src Int peekCodePoint()

Peek at the next code point

src Int peekPrevCodePoint()

Peek at the previous codepoint

src Position pos()

Get the current position (current line, index into that line)

src Void setPos(Position pos)

Set the current position for the scanner

src SourceLines source(Position begin, Position end)

For cases where the caller appends the result to a StrBuf, we could offer another method to avoid some unnecessary copying.

src Int whitespace()

Consume whitespace and return the number of whitespace characters consumed

Whitespace is defined as space, \t, \n, \u000B, \f, and \r