A bunch of stuff

1 files changed, 69 insertions, 0 deletions

diff --git a/src/parcom.cr b/src/parcom.cr
index 9063bf9..8835778 100644
--- a/src/parcom.cr
+++ b/src/parcom.cr
@@ -14,6 +14,12 @@ module Parcom
   abstract class Parser(T, V)
     abstract def parse(tokens : Array(T)) : Result(T, V)
 
+    def parse?(tokens : Array(T)) : Result(T, V)?
+      self.parse(tokens)
+    rescue
+      return nil
+    end
+
     def assert(f : V -> Bool)
       Assert.new(self, f)
     end
@@ -21,6 +27,11 @@ module Parcom
     def |(other : Parser(T, V)) : Parser(T, V)
       Alt.new(self, other)
     end
+
+    # TODO: Find a way to annotate this method's type
+    def map(f)
+      Map.new(self, f)
+    end
   end
 
   class Flunk(T, V) < Parser(T, V)
@@ -102,5 +113,63 @@ module Parcom
       @p2.parse(tokens)
     end
   end
+
+  class Map(T, V, U) < Parser(T, U)
+    def initialize(@p : Parser(T, V), @f : V -> U)
+    end
+
+    def parse(tokens : Array(T)) : Result(T, U)
+      result = @p.parse(tokens)
+      Result.new(result.tokens, @f.call(result.value))
+    end
+  end
+end
+
+class Phrase
+end
+
+class Plus
+end
+
+class Recover
+end
+
+class Optional
+end
+
+class Tokens
+end
+
+class Many
+end
+
+class Some
+end
+
+class Exactly
+end
+
+class AtLeast
+end
+
+class AtMost
+end
+
+class Between
+end
+
+class StopAt
+end
+
+class StopAfter
+end
+
+class StopIf
+end
+
+class FirstOf
+end
+
+class SepBy
 end