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, 7 insertions, 8 deletions

diff --git a/lexlua/fish.lua b/lexlua/fish.lua
index 6585e240b..5ec829391 100644
--- a/lexlua/fish.lua
+++ b/lexlua/fish.lua
@@ -25,24 +25,23 @@ lex:add_rule('keyword', token(lexer.KEYWORD, word_match[[
 lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word))
 
 -- Variables.
-lex:add_rule('variable', token(lexer.VARIABLE,
-                               '$' * (lexer.word +
-                                      lexer.delimited_range('{}', true, true))))
+lex:add_rule('variable', token(lexer.VARIABLE, '$' * (lexer.word +
+  lexer.range('{', '}', true))))
 
 -- Strings.
-local sq_str = lexer.delimited_range("'", false, true)
-local dq_str = lexer.delimited_range('"')
+local sq_str = lexer.range("'", false, false)
+local dq_str = lexer.range('"')
 lex:add_rule('string', token(lexer.STRING, sq_str + dq_str))
 
 -- Shebang.
-lex:add_rule('shebang', token('shebang', '#!/' * lexer.nonnewline^0))
+lex:add_rule('shebang', token('shebang', lexer.to_eol('#!/')))
 lex:add_style('shebang', lexer.STYLE_LABEL)
 
 -- Comments.
-lex:add_rule('comment', token(lexer.COMMENT, '#' * lexer.nonnewline^0))
+lex:add_rule('comment', token(lexer.COMMENT, lexer.to_eol('#')))
 
 -- Numbers.
-lex:add_rule('number', token(lexer.NUMBER, lexer.float + lexer.integer))
+lex:add_rule('number', token(lexer.NUMBER, lexer.number))
 
 -- Operators.
 lex:add_rule('operator', token(lexer.OPERATOR, S('=!<>+-/*^&|~.,:;?()[]{}')))