From 9734fa2d530b9496b70a388a117ea57fe5730772 Mon Sep 17 00:00:00 2001 From: Matthew Hall Date: Sun, 19 Mar 2023 23:02:29 +1300 Subject: Remove old files --- src/__OLD_parcom/alt.cr | 28 ---------------------------- 1 file changed, 28 deletions(-) delete mode 100644 src/__OLD_parcom/alt.cr (limited to 'src/__OLD_parcom/alt.cr') diff --git a/src/__OLD_parcom/alt.cr b/src/__OLD_parcom/alt.cr deleted file mode 100644 index dedd41d..0000000 --- a/src/__OLD_parcom/alt.cr +++ /dev/null @@ -1,28 +0,0 @@ -require "./parser.cr" - -module Parcom - # `Alt` is a `Parser` that accepts two other parsers and tries - # to parse with one of them. - # If the first (left) parser succeeds, its result is returned. - # If the first parser fails, it will try the second (right) parser. - class Alt(T, V) < Parser(T, V) - # Accepts the two parsers to try to parse with. - def initialize(@p1 : Parser(T, V), @p2 : Parser(T, V)) - end - - # Tries to parse using both parsers. - # - # It will initially try to parse with the first parser. - # If it fails, it will try to parse with the second parser. - def parse(tokens : Tokens(T)) : Result(T, V) - @p1.parse(tokens) - rescue ex1 : ParserFail - begin - @p2.parse(tokens) - rescue ex2 : ParserFail - raise ParserFail.new("Alt (#{ex1.message}), (#{ex2.message})") - end - end - end -end - -- cgit v1.2.1