Define parser based on EBNF: a Message is...

Author: alerque

fluent/syntax.lua

@@ -10,19 +10,21 @@ local ftlparser = epnf.define(function (_ENV)
   local blank = (blank_inline + line_end)^1
   local digits = R"09"^1
   local junk_line =  (1-line_end)^0 * line_end
+  Pattern = P"bar" + P"qiz"
   Junk = junk_line * (junk_line - P"#" - P"-" - R("az","AZ"))^0
+  Attribute = P"yyy"
   local comment_char = 1 - line_end
   CommentLine = (P"###" + P"##" + P"#") * (" " * comment_char^0)-1 * line_end
   Term = P"xxx"
   Identifier = R("az", "AZ") * (R("az", "AZ", "09") + P"_" + P"-")^0
-  Message = V"Identifier" * blank_inline^-1 * P"=" * blank_inline^-1 * P"bar"
+  Message = V"Identifier" * blank_inline^-1 * P"=" * blank_inline^-1 * ((V"Pattern" * V"Attribute"^0) + V"Attribute"^1)
   Entry = (V"Message" * line_end) + (V"Term" * line_end) + V"CommentLine"
   Resource = (V"Entry" + blank_block + V"Junk")^0 * EOF"unparsable input"
   START("Resource")
 end)
 -- luacheck: pop
 
--- TODO: Spec L14-L84, L86-L129
+-- TODO: Spec L15-L84, L86-L129
 
 local FluentSyntax = class({
     parser = ftlparser,

spec/fluent_syntax_spec.lua

@@ -34,7 +34,7 @@ describe('fluent.syntax', function ()
 
     it('should handle a simple entry', function ()
       assert.equals("Entry", syntax:parse("foo = bar")[1].id)
-      assert.equals("Entry", syntax:parse("baz = bar")[1].id)
+      assert.equals("Entry", syntax:parse("baz = qiz")[1].id)
     end)
 
     it('should handle simple comments', function ()