From 6b6e98d6642b630bd04dee13ef6d8fae33c200c8 Mon Sep 17 00:00:00 2001 From: mitchell Date: Mon, 1 Jun 2020 13:04:04 -0400 Subject: lexlua: Added Fennel lexer. Thanks to Momohime Honda. --- doc/LPegLexer.html | 2 ++ lexlua/fennel.lua | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) create mode 100644 lexlua/fennel.lua diff --git a/doc/LPegLexer.html b/doc/LPegLexer.html index 1cb85599f..291995710 100644 --- a/doc/LPegLexer.html +++ b/doc/LPegLexer.html @@ -2566,6 +2566,7 @@ operator 30
  • Erlang*
  • F#
  • Faust
  • +
  • Fennel
  • Fish*
  • Forth
  • Fortran
  • @@ -2683,6 +2684,7 @@ operator 30
  • Michael Forney
  • Michael T. Richter
  • Michel Martens
  • +
  • Momohime Honda
  • Murray Calavera
  • Neil Hodgson
  • Olivier Guibé
  • diff --git a/lexlua/fennel.lua b/lexlua/fennel.lua new file mode 100644 index 000000000..19db55bea --- /dev/null +++ b/lexlua/fennel.lua @@ -0,0 +1,37 @@ +-- Copyright 2006-2020 Mitchell mitchell.att.foicica.com. See License.txt. +-- Fennel LPeg lexer. +-- Contributed by Momohime Honda. + +local lexer = require('lexer') +local token, word_match = lexer.token, lexer.word_match +local P, S = lpeg.P, lpeg.S + +local lex = lexer.new('fennel', {inherit = lexer.load('lua')}) + +-- Whitespace. +lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1)) + +-- Keywords. +lex:modify_rule('keyword', token(lexer.KEYWORD, word_match[[ + % * + - ->> -> -?>> -?> .. . // / : <= < = >= > ^ ~= λ + and comment do doc doto each eval-compiler fn for global hashfn if include + lambda length let local lua macro macros match not not= or partial quote + require-macros set set-forcibly! tset values var when while +]])) + +-- Identifiers. +local initial = lexer.alpha + S"|$%&#*+-./:<=>?~^_λ!" +local subsequent = initial + lexer.digit +lex:modify_rule('identifier', token(lexer.IDENTIFIER, initial * subsequent^0)) + +-- Strings. +lex:modify_rule('string', token(lexer.STRING, lexer.range('"'))) + +-- Comments. +lex:modify_rule('comment', token(lexer.COMMENT, lexer.to_eol(';'))) + +-- Ignore these rules. +lex:modify_rule('label', P(false)) +lex:modify_rule('operator', P(false)) + +return lex -- cgit v1.2.3