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Merge pull request #1988 from colrdavidson/queue_peek

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Add peek_front and peek_back
This commit is contained in:
gingerBill
2022-08-29 12:02:17 +01:00
committed by GitHub
parent fc47b5dee0 7a6fc3a93b
commit d39f1c461e
1 changed files with 12 additions and 0 deletions
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core/container/queue/queue.odin
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@@ -99,6 +99,18 @@ get_ptr :: proc(q: ^$Q/Queue($T), #any_int i: int, loc := #caller_location) -> ^
return &q.data[idx] return &q.data[idx]
} }
peek_front :: proc(q: ^$Q/Queue($T), loc := #caller_location) -> ^T {
runtime.bounds_check_error_loc(loc, 0, builtin.len(q.data))
idx := q.offset%builtin.len(q.data)
return &q.data[idx]
}
peek_back :: proc(q: ^$Q/Queue($T), loc := #caller_location) -> ^T {
runtime.bounds_check_error_loc(loc, int(q.len - 1), builtin.len(q.data))
idx := (uint(q.len - 1)+q.offset)%builtin.len(q.data)
return &q.data[idx]
}
// Push an element to the back of the queue // Push an element to the back of the queue
push_back :: proc(q: ^$Q/Queue($T), elem: T) -> bool { push_back :: proc(q: ^$Q/Queue($T), elem: T) -> bool {
if space(q^) == 0 { if space(q^) == 0 {