Second rewrite attempt, this one should work, monkaS

1 files changed, 20 insertions, 0 deletions

diff --git a/src/__OLD_parcom/token.cr b/src/__OLD_parcom/token.cr
new file mode 100644
index 0000000..b4e1fef
--- /dev/null
+++ b/src/__OLD_parcom/token.cr
@@ -0,0 +1,20 @@
+require "./satisfy"
+
+module Parcom
+  # `Token` is a `Parser` that tries to parse a specific token
+  # from the input stream.
+  class Token(T) < Parser(T, T)
+    # Accepts the token that this parser will try to parse.
+    def initialize(@expected : T)
+      @p = Satisfy(T).new { |x| x == @expected }
+    end
+
+    # Tries to parse the specified token from the input stream.
+    def parse(tokens : Tokens(T)) : Result(T, T)
+      @p.parse(tokens)
+    rescue ex : ParserFail
+      raise ParserFail.new("Token <#{@expected}>: #{ex.message}")
+    end
+  end
+end
+