Define parser based on EBNF: all your Attributes are belong to us...

Author: alerque

fluent/syntax.lua

@@ -12,10 +12,10 @@ local ftlparser = epnf.define(function (_ENV)
   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"
+  Attribute = line_end * blank^-1 * P"." * V"Identifier" * blank_inline^-1 * "=" * blank_inline^-1 * V"Pattern"
   local comment_char = 1 - line_end
   CommentLine = (P"###" + P"##" + P"#") * (" " * comment_char^0)-1 * line_end
-  Term = P"xxx"
+  Term = P"-" * V"Identifier" * blank_inline^-1 * "=" * blank_inline^-1 * V"Pattern" * V"Attribute"^0
   Identifier = R("az", "AZ") * (R("az", "AZ", "09") + P"_" + P"-")^0
   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"
@@ -24,7 +24,7 @@ local ftlparser = epnf.define(function (_ENV)
 end)
 -- luacheck: pop
 
--- TODO: Spec L15-L84, L86-L129
+-- TODO: Spec L33-L84, L86-L129
 
 local FluentSyntax = class({
     parser = ftlparser,

spec/fluent_syntax_spec.lua

@@ -37,6 +37,15 @@ describe('fluent.syntax', function ()
       assert.equals("Entry", syntax:parse("baz = qiz")[1].id)
     end)
 
+    it('should handle term entries', function ()
+      assert.equals("Entry", syntax:parse("-foo = bar")[1].id)
+      assert.equals("Entry", syntax:parse("-baz = qiz")[1].id)
+    end)
+
+    it('should handle a entry with an attribute', function ()
+      assert.equals("Entry", syntax:parse("foo = bar\n .baz = quiz")[1].id)
+    end)
+
     it('should handle simple comments', function ()
       assert.same("CommentLine", syntax:parse("# foo")[1][1].id)
       assert.same("CommentLine", syntax:parse("## foo")[1][1].id)