From 9734fa2d530b9496b70a388a117ea57fe5730772 Mon Sep 17 00:00:00 2001
From: Matthew Hall <hallmatthew314@gmail.com>
Date: Sun, 19 Mar 2023 23:02:29 +1300
Subject: Remove old files

---
 src/__OLD_parcom/plus.cr | 54 ------------------------------------------------
 1 file changed, 54 deletions(-)
 delete mode 100644 src/__OLD_parcom/plus.cr

(limited to 'src/__OLD_parcom/plus.cr')

diff --git a/src/__OLD_parcom/plus.cr b/src/__OLD_parcom/plus.cr
deleted file mode 100644
index 53c9b4f..0000000
--- a/src/__OLD_parcom/plus.cr
+++ /dev/null
@@ -1,54 +0,0 @@
-require "./parser.cr"
-
-module Parcom
-  # `Plus` is a parser that tries to parse with two different
-  # parsers in succession and fails if either of the two parsers fails.
-  # The return type of this parser is `{V, U}`, where `V` is the return
-  # type of the first parser and `U` is the return type of the second.
-  #
-  # Example:
-  # ```
-  # parse1 = Token.new('1')
-  # parse2 = Token.new('2')
-  # tokens = Tokens.from_string("12")
-  # result = (parse1 + parse2).parse(tokens) # succeeds
-  # result = (parse2 + parse1).parse(tokens) # fails, wrong order
-  # ```
-  #
-  # `Plus` parsers can be chained together, but the resulting return type
-  # can become unweildly with too many combined parsers:
-  # ```
-  # letter_a = Token.new('a')
-  # a5 = letter_a + letter_a + letter_a + letter_a + letter_a
-  # tokens = Tokens.from_string("aaaaa")
-  # a5.parse(tokens) # succeeds
-  # # `a5` has a return type of { { { {Char, Char}, Char}, Char}, Char}
-  # ```
-  #
-  # If you need to parse more than two things in this manner,
-  # consider using `Many`, `Some`, `Sequence`, or `TokenSeq` instead.
-  class Plus(T, V, U) < Parser(T, {V, U})
-    # Accepts the two parsers to use, in order.
-    def initialize(@p1 : Parser(T, V), @p2 : Parser(T, U))
-    end
-
-    # Tries to parse with the two given parsers, and returns
-    # their results in a tuple if the both succeed.
-    def parse(tokens : Tokens(T)) : Result(T, {V, U})
-      begin
-        r1 = @p1.parse(tokens)
-      rescue ex : ParserFail
-        raise ParserFail.new("Plus (left): #{ex.message}")
-      end
-
-      begin
-        r2 = @p2.parse(r1.tokens)
-      rescue ex : ParserFail
-        raise ParserFail.new("Plus (right): #{ex.message}")
-      end
-
-      Result.new(r2.tokens, {r1.value, r2.value})
-    end
-  end
-end
-
-- 
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