Ready to write tests for Lipmaa linking

dist/pigeon/lexer.rb

@@ -24,7 +24,7 @@ module Pigeon
     attr_reader :bundle_string, :scanner, :tokens
     # TODO: Change all the `{40,90}` values in ::Lexer to real values
     # TODO: Create regexes using string and Regexp.new() for cleaner regexes.
-    DEPTH_COUNT = /\d{1,7}/
+    NUMERIC = /\d{1,7}/
     NULL_VALUE = /NONE/
     FEED_VALUE = /@.{52}\.ed25519/
     MESG_VALUE = /%.{52}\.sha256/
@@ -43,7 +43,8 @@ module Pigeon
 
     SEPERATOR = /\n/
     AUTHOR = /author #{FEED_VALUE}\n/
-    DEPTH = /depth #{DEPTH_COUNT}\n/
+    DEPTH = /depth #{NUMERIC}\n/
+    LIPMAA = /lipmaa #{NUMERIC}\n/
     PREV = /prev (#{MESG_VALUE}|#{NULL_VALUE})\n/
     KIND = /kind #{ALPHANUMERICISH}\n/
     BODY_ENTRY = /#{ALPHANUMERICISH}:#{ANY_VALUE}\n/
@@ -82,6 +83,12 @@ module Pigeon
         return
       end
 
+      if scanner.scan(LIPMAA)
+        depth = scanner.matched.chomp.gsub("depth ", "").to_i
+        @tokens << [:LIPMAA, depth]
+        return
+      end
+
       if scanner.scan(PREV)
         prev = scanner.matched.chomp.gsub("prev ", "")
         @tokens << [:PREV, prev]

dist/pigeon/message.rb

@@ -2,7 +2,7 @@ require "digest"
 
 module Pigeon
   class Message
-    attr_reader :author, :kind, :body, :signature, :depth, :prev
+    attr_reader :author, :kind, :body, :signature, :depth, :lipmaa, :prev
 
     class VerificationError < StandardError; end
 
@@ -10,7 +10,7 @@ module Pigeon
 
     # Store a message that someone (not the LocalIdentity)
     # has authored.
-    def self.ingest(author:, body:, depth:, kind:, prev:, signature:)
+    def self.ingest(author:, body:, depth:, kind:, lipmaa:, prev:, signature:)
       params = { author: RemoteIdentity.new(author),
                  kind: kind,
                  body: body,

dist/pigeon/parser.rb

@@ -19,6 +19,7 @@ module Pigeon
         when :KIND then set(:kind, token.last)
         when :DEPTH then set(:depth, token.last)
         when :PREV then set(:prev, token.last)
+        when :LIPMAA then set(:lipmaa, token.last)
         when :HEADER_END then set(:body, {})
         when :BODY_ENTRY then set(token[1], token[2], @scratchpad[:body])
         when :BODY_END then nil

spec/pigeon/message_spec.rb

@@ -92,10 +92,7 @@ RSpec.describe Pigeon::Message do
     expect(m4.prev).to be
   end
 
-  # Init LocalIdentity
-  # Get secret
-  # Create signing key
-
+  it "verifies accuracy of Lipmaa links"
   it "verifies accuracy of signatures" do
     # === Initial setup
     Pigeon::LocalIdentity.current