1 files changed, 62 insertions, 0 deletions
diff --git a/lexlua/go.lua b/lexlua/go.lua
new file mode 100644
index 000000000..5fff60938
--- /dev/null
+++ b/lexlua/go.lua
@@ -0,0 +1,62 @@
+-- Copyright 2006-2018 Mitchell mitchell.att.foicica.com. See License.txt.
+-- Go 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('go')
+
+-- Whitespace.
+lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1))
+
+-- Keywords.
+lex:add_rule('keyword', token(lexer.KEYWORD, word_match[[
+  break case chan const continue default defer else fallthrough for func go goto
+  if import interface map package range return select struct switch type var
+]]))
+
+-- Constants.
+lex:add_rule('constant', token(lexer.CONSTANT, word_match[[
+  true false iota nil
+]]))
+
+-- Types.
+lex:add_rule('type', token(lexer.TYPE, word_match[[
+  bool byte complex64 complex128 error float32 float64 int int8 int16 int32
+  int64 rune string uint uint8 uint16 uint32 uint64 uintptr
+]]))
+
+-- Functions.
+lex:add_rule('function', token(lexer.FUNCTION, word_match[[
+  append cap close complex copy delete imag len make new panic print println
+  real recover
+]]))
+
+-- Identifiers.
+lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word))
+
+-- Strings.
+local sq_str = lexer.delimited_range("'", true)
+local dq_str = lexer.delimited_range('"', true)
+local raw_str = lexer.delimited_range('`', false, true)
+lex:add_rule('string', token(lexer.STRING, sq_str + dq_str + raw_str))
+
+-- Comments.
+local line_comment = '//' * lexer.nonnewline^0
+local block_comment = '/*' * (lexer.any - '*/')^0 * P('*/')^-1
+lex:add_rule('comment', token(lexer.COMMENT, line_comment + block_comment))
+
+-- Numbers.
+lex:add_rule('number', token(lexer.NUMBER, (lexer.float + lexer.integer) *
+                                           P('i')^-1))
+
+-- Operators.
+lex:add_rule('operator', token(lexer.OPERATOR, S('+-*/%&|^<>=!:;.,()[]{}')))
+
+-- Fold points.
+lex:add_fold_point(lexer.OPERATOR, '{', '}')
+lex:add_fold_point(lexer.COMMENT, '/*', '*/')
+lex:add_fold_point(lexer.COMMENT, '//', lexer.fold_line_comments('//'))
+
+return lex