-- mod-version:4
local syntax = require "core.syntax"

syntax.add {
  name = "Lua",
  files = { "%.lua$", "%.rockspec$" },
  headers = "^#!.*[ /]lua",
  comment = "--",
  block_comment = { "--[[", "]]" },
  patterns = {
    { pattern = { '"', '"', '\\' },          type = "string" },
    { pattern = { "'", "'", '\\' },          type = "string" },
    { pattern = { "%[%[", "%]%]" },          type = "string" },
    { pattern = { "%-%-%[%[", "%]%]"},       type = "comment" },
    { pattern = "%-%-.*",                    type = "comment" },
    { pattern = "0x%x+%.%x*[pP][-+]?%d+",    type = "number" },
    { pattern = "0x%x+%.%x*",                type = "number" },
    { pattern = "0x%.%x+[pP][-+]?%d+",       type = "number" },
    { pattern = "0x%.%x+",                   type = "number" },
    { pattern = "0x%x+[pP][-+]?%d+",         type = "number" },
    { pattern = "0x%x+",                     type = "number" },
    { pattern = "%d%.%d*[eE][-+]?%d+",       type = "number" },
    { pattern = "%d%.%d*",                   type = "number" },
    { pattern = "%.?%d*[eE][-+]?%d+",        type = "number" },
    { pattern = "%.?%d+",                    type = "number" },
    { pattern = "<%a+>",                     type = "keyword2" },
    { pattern = "%.%.%.?",                   type = "operator" },
    { pattern = "[<>~=]=",                   type = "operator" },
    { pattern = "[%+%-=/%*%^%%#<>]",         type = "operator" },
    { pattern = "[%a_][%w_]*()%s*%f[(\"'{]", type = {"function", "normal"} },
    { pattern = "[%a_][%w_]*",               type = "symbol" },
    { pattern = "::[%a_][%w_]*::",           type = "function" },
  },
  symbols = {
    ["if"]       = "keyword",
    ["then"]     = "keyword",
    ["else"]     = "keyword",
    ["elseif"]   = "keyword",
    ["end"]      = "keyword",
    ["do"]       = "keyword",
    ["function"] = "keyword",
    ["repeat"]   = "keyword",
    ["until"]    = "keyword",
    ["while"]    = "keyword",
    ["for"]      = "keyword",
    ["break"]    = "keyword",
    ["return"]   = "keyword",
    ["local"]    = "keyword",
    ["in"]       = "keyword",
    ["not"]      = "keyword",
    ["and"]      = "keyword",
    ["or"]       = "keyword",
    ["goto"]     = "keyword",
    ["self"]     = "keyword2",
    ["true"]     = "literal",
    ["false"]    = "literal",
    ["nil"]      = "literal",
  },
}

