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authormitchell <unknown>2018-03-11 23:04:41 -0400
committermitchell <unknown>2018-03-11 23:04:41 -0400
commit519b7328b66c4c84f03893a31e4be5ba6b1395f2 (patch)
tree2055cd79006357e94c185f341d0df17b9a8769eb /lexlua/fsharp.lua
parentc0373e036e965a70045971e2abc582cb4bf12a4e (diff)
downloadscintilla-mirror-519b7328b66c4c84f03893a31e4be5ba6b1395f2.tar.gz
Added optional Lua lexer support.
This support is disabled by default and must be enabled via compile-time option.
Diffstat (limited to 'lexlua/fsharp.lua')
-rw-r--r--lexlua/fsharp.lua59
1 files changed, 59 insertions, 0 deletions
diff --git a/lexlua/fsharp.lua b/lexlua/fsharp.lua
new file mode 100644
index 000000000..b651d5fe5
--- /dev/null
+++ b/lexlua/fsharp.lua
@@ -0,0 +1,59 @@
+-- Copyright 2006-2018 Mitchell mitchell.att.foicica.com. See License.txt.
+-- F# LPeg lexer.
+
+local lexer = require('lexer')
+local token, word_match = lexer.token, lexer.word_match
+local P, R, S = lpeg.P, lpeg.R, lpeg.S
+
+local lex = lexer.new('fsharp', {fold_by_indentation = true})
+
+-- Whitespace.
+lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1))
+
+-- Keywords.
+lex:add_rule('keyword', token(lexer.KEYWORD, word_match[[
+ abstract and as assert asr begin class default delegate do done downcast
+ downto else end enum exception false finaly for fun function if in iherit
+ interface land lazy let lor lsl lsr lxor match member mod module mutable
+ namespace new null of open or override sig static struct then to true try type
+ val when inline upcast while with async atomic break checked component const
+ constructor continue eager event external fixed functor include method mixin
+ process property protected public pure readonly return sealed switch virtual
+ void volatile where
+ -- Booleans.
+ true false
+]]))
+
+-- Types.
+lex:add_rule('type', token(lexer.TYPE, word_match[[
+ bool byte sbyte int16 uint16 int uint32 int64 uint64 nativeint unativeint char
+ string decimal unit void float32 single float double
+]]))
+
+-- Identifiers.
+lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word))
+
+-- Strings.
+lex:add_rule('string', token(lexer.STRING, lexer.delimited_range("'", true) +
+ lexer.delimited_range('"', true)))
+
+-- Comments.
+lex:add_rule('comment', token(lexer.COMMENT, '//' * lexer.nonnewline^0 +
+ lexer.nested_pair('(*', '*)')))
+
+-- Numbers.
+lex:add_rule('number', token(lexer.NUMBER, (lexer.float +
+ lexer.integer * S('uUlL')^-1)))
+
+-- Preprocessor.
+local preproc_word = word_match[[
+ else endif endregion if ifdef ifndef light region
+]]
+lex:add_rule('preproc', token(lexer.PREPROCESSOR, lexer.starts_line('#') *
+ S('\t ')^0 * preproc_word))
+
+-- Operators.
+lex:add_rule('operator', token(lexer.OPERATOR,
+ S('=<>+-*/^.,:;~!@#%^&|?[](){}')))
+
+return lex