The offsets part of a full position, consisting of 2 or 3 entries:
start: the start offset of the span, in characters from start of file
end : the end offset of the span
point: if given, the offset where a single ^ would be logically placed
Spans are encoded according to the following format in little endian:
Start: unsigned 26 Bits (works for source files up to 64M)
End: unsigned 26 Bits
Point: unsigned 12 Bits relative to start
NoSpan encoded as -1L (this is a normally invalid span because point would lie beyond end).
A span indicates a range between a start offset and an end offset.
Spans can be synthetic or source-derived. A source-derived span
has in addition a point. The point lies somewhere between start and end. The point
is roughly where the ^ would go if an error was diagnosed at that position.
All quantities are encoded opaquely in a Long.
A span indicates a range between a start offset and an end offset.
Spans can be synthetic or source-derived. A source-derived span
has in addition a point. The point lies somewhere between start and end. The point
is roughly where the ^ would go if an error was diagnosed at that position.
All quantities are encoded opaquely in a Long.
