Reformatted Lua LPeg lexers and added new convenience functions and pattern.

`lexer.range()` replaces `lexer.delimited_range()` and `lexer.nested_pair()`.
`lexer.to_eol()` replaces `patt * lexer.nonnewline^0` constructs.
`lexer.number` replaces `lexer.float + lexer.integer`.
Also added unit tests for lexer functions.

1 files changed, 5 insertions, 4 deletions

diff --git a/lexlua/dot.lua b/lexlua/dot.lua
index e71079cbf..906ce6b48 100644
--- a/lexlua/dot.lua
+++ b/lexlua/dot.lua
@@ -32,12 +32,13 @@ lex:add_rule('type', token(lexer.TYPE, word_match[[
 lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word))
 
 -- Strings.
-lex:add_rule('string', token(lexer.STRING, lexer.delimited_range("'") +
-                                           lexer.delimited_range('"')))
+local sq_str = lexer.range("'")
+local dq_str = lexer.range('"')
+lex:add_rule('string', token(lexer.STRING, sq_str + dq_str))
 
 -- Comments.
-local line_comment = '//' * lexer.nonnewline_esc^0
-local block_comment = '/*' * (lexer.any - '*/')^0 * P('*/')^-1
+local line_comment = lexer.to_eol('//', true)
+local block_comment = lexer.range('/*', '*/')
 lex:add_rule('comment', token(lexer.COMMENT, line_comment + block_comment))
 
 -- Numbers.