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Unify peek_n with peek and renamescan_peek_n to peek_token

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This commit is contained in:
gingerBill
2020-12-07 12:13:41 +00:00
parent b9aa94ee0d
commit 7b55068b04
1 changed files with 10 additions and 16 deletions
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core/text/scanner/scanner.odin
+10 -16
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@@ -150,32 +150,26 @@ next :: proc(s: ^Scanner) -> rune {
return ch;
}
peek :: proc(s: ^Scanner) -> rune {
peek :: proc(s: ^Scanner, n := 0) -> (ch: rune) {
if s.ch == -2 {
s.ch = advance(s);
if s.ch == '\ufeff' { // Ignore BOM
s.ch = advance(s);
}
}
return s.ch;
}
peek_n :: proc(s: ^Scanner, n: int) -> rune {
assert(n >= 0);
if n == 0 {
return peek(s);
ch = s.ch;
if n > 0 {
prev_s := s^;
for in 0..<n {
next(s);
}
ch = s.ch;
s^ = prev_s;
}
prev_s := s^;
for in 0..<n {
next(s);
}
ch := peek(s);
s^ = prev_s;
return ch;
}
scan_peek_n :: proc(s: ^Scanner, n: int) -> (tok: rune) {
peek_token :: proc(s: ^Scanner, n := 0) -> (tok: rune) {
assert(n >= 0);
prev_s := s^;
for in 0..<n {