func countSpaces(lx *Lexer) int {
spaces := 0
for ; common.IsSpace(lx.curChar); lx.nextChar() {
spaces += common.SpaceAmount(lx.curChar)
}
return spaces
}
func trySpace(lx *Lexer) (tok common.Token, moved bool) {
atStart := lx.srcBuf.AtStartOfLine() && lx.inParens <= 0
if common.IsSpace(lx.curChar) || atStart {
mark := lx.srcBuf.NewMark()
tok, moved = lx.newSpaceTok(mark, countSpaces(lx), atStart), true
lx.srcBuf.NotAtStartOfLine()
}
return
}
/// HasSpaceAround - return:
/// -1 for front space only
/// +1 for back space only
/// 0 for front and back being equal
func (tok *SimpleToken) HasSpaceAround() int {
line := tok.WholeLine()
// look for space before token:
front := 0
col := tok.StartColumn() - 1
if col < 0 || common.IsSpace(line[col]) {
front = 1
}
// look for space after token:
back := 0
col = tok.StartColumn() + len(tok.Content())
if col >= len(line) || common.IsSpace(line[col]) {
back = 1
}
return back - front
}