diff options
Diffstat (limited to 'src/__OLD_parcom/eof.cr')
| -rw-r--r-- | src/__OLD_parcom/eof.cr | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/src/__OLD_parcom/eof.cr b/src/__OLD_parcom/eof.cr deleted file mode 100644 index 650da56..0000000 --- a/src/__OLD_parcom/eof.cr +++ /dev/null @@ -1,23 +0,0 @@ -require "./parser.cr" - -module Parcom - # `EOF` is a `Parser` succeeds if the input stream is empty. - # - # This parser retuns `nil` when successful because there is no - # other meaningful value to return. - # - # This parser is also one of the few cases where it is ideal to not - # modify or take from the input stream, as it should be empty anyway. - class EOF(T) < Parser(T, Nil) - # Succeeds is the input stream is empty and returns `nil`. - # Raises a `ParserFail` exception when the input is not empty. - def parse(tokens : Tokens(T)) : Result(T, Nil) - if tokens.empty? - Result.new(tokens, nil) - else - raise ParserFail.new("Eof: input was not empty") - end - end - end -end - |