branch: elpa/haskell-tng-mode
commit bfe859ad617629024aff6357331c4782c5c353fb
Author: Tseen She <ts33n....@gmail.com>
Commit: Tseen She <ts33n....@gmail.com>
notes about lexers
---
haskell-tng-lexer.el | 7 ++++++-
haskell-tng-smie.el | 1 +
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/haskell-tng-lexer.el b/haskell-tng-lexer.el
index c0c252c..e4740dd 100644
--- a/haskell-tng-lexer.el
+++ b/haskell-tng-lexer.el
@@ -10,10 +10,14 @@
;;
;;; Code:
-;; See also (other than the GHC alex lexer)
+;; See also
;;
+;; https://gitlab.haskell.org/ghc/ghc/blob/master/compiler/parser/Lexer.x
;;
https://github.com/carymrobbins/intellij-haskforce/blob/master/src/com/haskforce/parsing/_HaskellParsingLexer.flex
;;
https://github.com/typelead/intellij-eta/blob/eta-ide/plugin/src/main/eta/IntelliJ/Plugin/Eta/Lang/Lexer/EtaParsingLexer.hs
+;; https://www.haskell.org/hugs/downloads/2006-09/hugs98-Sep2006.tar.gz
(src/parser.y)
+;; https://github.com/haskell-lisp/yale-haskell/blob/master/parser/lexer.scm
+;; http://bnfc.digitalgrammars.com/
;;
;; We could potentially use FFI + Flex to do the lexing for us, giving us
access
;; to much more powerful regexp rules (Emacs doesn't support zero width
@@ -123,6 +127,7 @@ the lexer."
((looking-at haskell-tng:regexp:symid)
(haskell-tng-lexer:last-match nil "SYMID"))
;; TODO numeric literals
+ ;; TODO `infix_varid`
;; unknown things
((looking-at (rx (+ (| (syntax word) (syntax symbol)))))
diff --git a/haskell-tng-smie.el b/haskell-tng-smie.el
index 42fb3ad..5472934 100644
--- a/haskell-tng-smie.el
+++ b/haskell-tng-smie.el
@@ -26,6 +26,7 @@
;; https://www.gnu.org/software/emacs/manual/html_mono/elisp.html#SMIE-Grammar
;; https://www.haskell.org/onlinereport/haskell2010/haskellch3.html
+;; https://gitlab.haskell.org/ghc/ghc/blob/master/compiler/parser/Parser.y
;;
;; Many of these grammar rules cannot be expressed in SMIE because Haskell uses
;; whitespace separators a lot, whereas the BNF must use non-terminals.
