diff options
Diffstat (limited to 'lexers')
| -rw-r--r-- | lexers/faust.lua | 57 | ||||
| -rw-r--r-- | lexers/lexer.lua | 1 |
2 files changed, 58 insertions, 0 deletions
diff --git a/lexers/faust.lua b/lexers/faust.lua new file mode 100644 index 0000000..e9c7162 --- /dev/null +++ b/lexers/faust.lua @@ -0,0 +1,57 @@ +-- Faust LPeg lexer. + +local l = require('lexer') +local token, word_match = l.token, l.word_match +local P, R, S = lpeg.P, lpeg.R, lpeg.S + +local M = {_NAME = 'faust'} + +-- Whitespace. +local ws = token(l.WHITESPACE, l.space^1) + +-- Comments. +local line_comment = '//' * l.nonnewline^0 +local block_comment = '/*' * (l.any - '*/')^0 * P('*/')^-1 +local comment = token(l.COMMENT, line_comment + block_comment) + +-- Strings. +local string = token(l.STRING, l.delimited_range('"', true)) + +-- Numbers. +local int = R('09')^1 +local rad = P('.') +local exp = (P('e') * S('+-')^-1 * int)^-1 +local flt = int * (rad * int)^-1 * exp + int^-1 * rad * int * exp +local number = token(l.NUMBER, flt + int) + +-- Keywords. +local keyword = token(l.KEYWORD, word_match{ + 'declare', 'import', 'mdoctags', 'dependencies', 'distributed', + 'inputs', 'outputs', 'par', 'seq', 'sum', 'prod', 'xor', 'with', + 'environment', 'library', 'component', 'ffunction', 'fvariable', + 'fconstant', 'int', 'float', 'case', 'waveform', 'h:', 'v:', 't:' +}) + +-- Identifiers. +local identifier = token(l.IDENTIFIER, l.word) + +-- Operators. +local punct = S('+-/*%<>~!=^&|?~:;,.()[]{}@#$`\\\'') +local operator = token(l.OPERATOR, punct) + +-- Pragmas. +local mdoc = P('<mdoc>') * (l.any - P('</mdoc>'))^0 * P('</mdoc>') +local pragma = token(l.PREPROCESSOR, mdoc) + +M._rules = { + {'whitespace', ws}, + {'comment', comment}, + {'pragma', pragma}, + {'keyword', keyword}, + {'number', number}, + {'operator', operator}, + {'identifier', identifier}, + {'string', string}, +} + +return M diff --git a/lexers/lexer.lua b/lexers/lexer.lua index a6b27bd..cb9138a 100644 --- a/lexers/lexer.lua +++ b/lexers/lexer.lua @@ -1624,6 +1624,7 @@ local files = { [".e|.eif"] = "eiffel", [".ex|.exs"] = "elixir", [".erl|.hrl"] = "erlang", + [".dsp"] = "faust", [".fs"] = "fsharp", [".fish"] = "fish", [".forth|.frt|.fs"] = "forth", |