diff options
Diffstat (limited to 'lua/lexers/json.lua')
| -rw-r--r-- | lua/lexers/json.lua | 63 |
1 files changed, 28 insertions, 35 deletions
diff --git a/lua/lexers/json.lua b/lua/lexers/json.lua index 6e7025d..10b6406 100644 --- a/lua/lexers/json.lua +++ b/lua/lexers/json.lua @@ -1,47 +1,40 @@ --- Copyright 2006-2017 Brian "Sir Alaran" Schott. See LICENSE. +-- Copyright 2006-2022 Brian "Sir Alaran" Schott. See LICENSE. -- JSON LPeg lexer. -- Based off of lexer code by Mitchell. -local l = require('lexer') -local token, word_match = l.token, l.word_match -local P, R, S = lpeg.P, lpeg.R, lpeg.S +local lexer = require('lexer') +local token, word_match = lexer.token, lexer.word_match +local P, S = lpeg.P, lpeg.S -local M = {_NAME = 'json'} +local lex = lexer.new('json') -- Whitespace. -local ws = token(l.WHITESPACE, l.space^1) - --- Comments. -local comment = token(l.COMMENT, '/*' * (l.any - '*/')^0 * P('*/')^-1) +lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1)) -- Strings. -local sq_str = P('u')^-1 * l.delimited_range("'", true) -local dq_str = P('U')^-1 * l.delimited_range('"', true) -local string = token(l.STRING, sq_str + dq_str) - --- Numbers. -local integer = S('+-')^-1 * l.digit^1 * S('Ll')^-1 -local number = token(l.NUMBER, l.float + integer) +local sq_str = lexer.range("'", true) +local dq_str = lexer.range('"', true) +lex:add_rule('string', token(lexer.STRING, sq_str + dq_str)) -- Keywords. -local keyword = token(l.KEYWORD, word_match{"true", "false", "null"}) +lex:add_rule('keyword', token(lexer.KEYWORD, word_match('true false null'))) + +-- Comments. +local line_comment = lexer.to_eol('//', true) +local block_comment = lexer.range('/*', '*/') +lex:add_rule('comment', token(lexer.COMMENT, line_comment + block_comment)) + +-- Numbers. +local integer = S('+-')^-1 * lexer.dec_num * S('Ll')^-1 +lex:add_rule('number', token(lexer.NUMBER, lexer.float + integer)) -- Operators. -local operator = token(l.OPERATOR, S('[]{}:,')) - -M._rules = { - {'whitespace', ws}, - {'comment', comment}, - {'string', string}, - {'number', number}, - {'keyword', keyword}, - {'operator', operator}, -} - -M._foldsymbols = { - _patterns = {'[%[%]{}]', '/%*', '%*/'}, - [l.OPERATOR] = {['['] = 1, [']'] = -1, ['{'] = 1, ['}'] = -1}, - [l.COMMENT] = {['/*'] = 1, ['*/'] = -1} -} - -return M +lex:add_rule('operator', token(lexer.OPERATOR, S('[]{}:,'))) + +-- Fold points. +lex:add_fold_point(lexer.OPERATOR, '[', ']') +lex:add_fold_point(lexer.OPERATOR, '{', '}') +lex:add_fold_point(lexer.COMMENT, '/*', '*/') +lex:add_fold_point(lexer.COMMENT, lexer.fold_consecutive_lines('//')) + +return lex |
