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, 4 insertions, 4 deletions

diff --git a/lexlua/scheme.lua b/lexlua/scheme.lua
index 1d37c65c6..326f52cf5 100644
--- a/lexlua/scheme.lua
+++ b/lexlua/scheme.lua
@@ -53,17 +53,17 @@ lex:add_rule('identifier', token(lexer.IDENTIFIER, word))
 
 -- Strings.
 local literal = (P("'") + '#' * S('\\bdox')) * lexer.word
-local dq_str = lexer.delimited_range('"')
+local dq_str = lexer.range('"')
 lex:add_rule('string', token(lexer.STRING, literal + dq_str))
 
 -- Comments.
-local line_comment = ';' * lexer.nonnewline^0
-local block_comment = '#|' * (lexer.any - '|#')^0 * P('|#')^-1
+local line_comment = lexer.to_eol(';')
+local block_comment = lexer.range('#|', '|#')
 lex:add_rule('comment', token(lexer.COMMENT, line_comment + block_comment))
 
 -- Numbers.
 lex:add_rule('number', token(lexer.NUMBER, P('-')^-1 * lexer.digit^1 *
-                                           (S('./') * lexer.digit^1)^-1))
+  (S('./') * lexer.digit^1)^-1))
 
 -- Operators.
 lex:add_rule('operator', token(lexer.OPERATOR, S('<>=*/+-`@%:()')))