From fad15f79b1230b3076be515d6894c8919562809b Mon Sep 17 00:00:00 2001 From: mitchell Date: Sat, 25 Apr 2020 16:26:31 -0400 Subject: 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. --- lexlua/dockerfile.lua | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) (limited to 'lexlua/dockerfile.lua') diff --git a/lexlua/dockerfile.lua b/lexlua/dockerfile.lua index ddf9e53f8..6aeef3a06 100644 --- a/lexlua/dockerfile.lua +++ b/lexlua/dockerfile.lua @@ -20,20 +20,19 @@ lex:add_rule('keyword', token(lexer.KEYWORD, word_match[[ lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word)) -- Variable. -lex:add_rule('variable', token(lexer.VARIABLE, - S('$')^1 * (S('{')^1 * lexer.word * S('}')^1 + - lexer.word))) +lex:add_rule('variable', token(lexer.VARIABLE, S('$')^1 * + (S('{')^1 * lexer.word * S('}')^1 + lexer.word))) -- 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)) -- 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('\\[],=:{}'))) -- cgit v1.2.3