diff options
| author | Matthew Hall <hallmatthew314@gmail.com> | 2023-03-08 20:22:33 +1300 |
|---|---|---|
| committer | Matthew Hall <hallmatthew314@gmail.com> | 2023-03-08 20:22:33 +1300 |
| commit | 61a58de90c2781562aacc8006616e97a3ff12005 (patch) | |
| tree | d5764dd7c8aef213e4999cfeb5bcc798a4bb0c3b /src/parcom.cr | |
| parent | f7b089d954cb028ee3c46ad45f0f81ae2e5386cf (diff) | |
Implement recover
Diffstat (limited to 'src/parcom.cr')
| -rw-r--r-- | src/parcom.cr | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/parcom.cr b/src/parcom.cr index 4d49a97..f102728 100644 --- a/src/parcom.cr +++ b/src/parcom.cr @@ -192,7 +192,13 @@ module Parcom end end - class Recover + class Recover(T, V) < Parser(T, V) + def initialize(@p : Parser(T, V), @default : V) + end + + def parse(tokens : TokenStream(T)) : Result(T, V) + @p.parse?(tokens) || Result.new(tokens, @default) + end end class Optional |