local syntax = require "core.syntax"

syntax.add {
  files = { "%.js$", "%.json$", "%.cson$" },
  comment = "//",
  patterns = {
    { pattern = "//.-\n",               type = "comment"  },
    { pattern = { "/%*", "%*/" },       type = "comment"  },
    { pattern = { '"', '"', '\\' },     type = "string"   },
    { pattern = { "'", "'", '\\' },     type = "string"   },
    { pattern = "0x[%da-fA-F]+",        type = "number"   },
    { pattern = "-?%d+[%d%.eE]*",       type = "number"   },
    { pattern = "-?%.?%d+",             type = "number"   },
    { pattern = "[%+%-=/%*%^%%<>!~|&]", type = "operator" },
    { pattern = "[%a_][%w_]*%f[(]",     type = "function" },
    { pattern = "[%a_][%w_]*",          type = "symbol"   },
  },
  symbols = {
    ["if"]       = "keyword",
    ["then"]     = "keyword",
    ["else"]     = "keyword",
    ["do"]       = "keyword",
    ["while"]    = "keyword",
    ["for"]      = "keyword",
    ["break"]    = "keyword",
    ["continue"] = "keyword",
    ["return"]   = "keyword",
    ["switch"]   = "keyword",
    ["case"]     = "keyword",
    ["const"]    = "keyword",
    ["try"]      = "keyword",
    ["catch"]    = "keyword",
    ["throw"]    = "keyword",
    ["var"]      = "keyword",
    ["let"]      = "keyword",
    ["get"]      = "keyword",
    ["set"]      = "keyword",
    ["function"] = "keyword",
    ["new"]      = "keyword",
    ["this"]     = "keyword2",
    ["true"]     = "literal",
    ["false"]    = "literal",
    ["null"]     = "literal",
  },
}