lex . and ω (and #)

lib/src/Quox/Lexer.idr

@@ -96,6 +96,7 @@ tokens = choice [
   simple [","] $ P Comma,
   simple ["::", "∷"] $ P DblColon,
   simple [":"] $ P Colon, -- needs to be after "::"
+  simple ["."] $ P Dot,
 
   simple ["->", "→"] $ P Arrow,
   simple ["=>", "⇒"] $ P DblArrow,
@@ -103,9 +104,10 @@ tokens = choice [
   simple ["<<", "⊲"] $ P Triangle,
   match wild $ const $ P Wild,
 
-  keyword "fun"  Fun,  keyword "λ"  Fun,
+  keyword "fun"  Fun,   keyword "λ"  Fun,
-  keyword "let"  Let,  keyword "in" In,
+  keyword "let"  Let,   keyword "in" In,
-  keyword "case" Case, keyword "of" Of,
+  keyword "case" Case,  keyword "of" Of,
+  keyword "ω"    Omega, simple ["#"] $ K Omega,
 
   match name   $ Name,
   match symbol $ Symbol . assert_total strTail,

lib/src/Quox/Token.idr

@@ -13,6 +13,7 @@ data Punc
 | LBrace  | RBrace
 | Comma
 | Colon | DblColon
+| Dot
 | Arrow | DblArrow
 | Times | Triangle
 | Wild
@@ -22,7 +23,7 @@ data Punc
 
 public export
 data Keyword
-= Fun | Let | In | Case | Of
+= Fun | Let | In | Case | Of | Omega
 
 %runElab derive "Keyword" [Generic, Meta, Eq, Ord, DecEq, Show]
 

tests/src/Tests/Lexer.idr

@@ -113,6 +113,7 @@ tests = "lexer" :- [
     acceptsWith' "'a"       [Symbol "a"],
     acceptsWith' "'ab"      [Symbol "ab"],
     acceptsWith' "'_b"      [Symbol "_b"],
+    acceptsWith' "a.b.c"    [Name "a", P Dot, Name "b", P Dot, Name "c"],
     rejects'     "'",
     rejects'     "1abc"
   ],
@@ -124,6 +125,8 @@ tests = "lexer" :- [
     acceptsWith' "in"   [K In],
     acceptsWith' "case" [K Case],
     acceptsWith' "of"   [K Of],
+    acceptsWith' "ω"    [K Omega],
+    acceptsWith' "#"    [K Omega],
     acceptsWith' "funk" [Name "funk"]
   ],