p4.json

{
    "displayName": "P4",
    "name": "p4",

    "lineComment":      "//",
    "blockCommentStart": "/*",
    "blockCommentEnd":   "*/",

    "keywords": [ "action", "apply", "control", "default", "else",
        "extern", "exit", "false", "if",
        "package", "parser", "return", "select", "state", "switch",
        "table", "transition", "true", "typedef", "verify"
    ],

  "extraKeywords": [],

  "typeKeywords": [
    "bool", "bit", "const", "enum", "entries", "error", "header", "header_union", "in", "inout", "int", "match_kind", "out", "tuple", "struct", "varbit", "void"
  ],

  "extraTypeKeywords": [],

  "directives": [
    "include","if","endif","ifdef","define","ifndef","undef","line"
  ],

  "annotations": [
    "atomic", "defaultonly", "name", "priority", "tableonly", "hidden", "globalname"
  ],

  "operators": [
    "=", ">", "<", "!", "~", "?", ":",
    "==", "<=", ">=", "!=", "&&", "||", "++",
    "+", "-", "*", "/", "&", "|", "^", "%", "<<",
    ">>", "&&&", ".."
  ],

  "extraOperators": [],

  "symbols":  "[=><!~?:&|+\\-*\\/\\^%]+",
  "escapes":  "\\\\(?:[abfnrtv\\\\\"']|x[0-9A-Fa-f]{1,4}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})",


  "tokenizer": {
    "root": [

      ["__\\w+", "identifier.predefined"],
      ["\\w+::(?=\\w)", "namespace" ],
      ["(namespace)(\\s*)((?:\\w+::)*\\w+)", ["keyword","white","namespace"] ],

      ["[a-z_$][\\w]*",  { "cases": {
        "@typeKeywords": "keyword.type",
        "@extraTypeKeywords": "keyword.type.extra",
        "@keywords": "keyword",
        "@extraKeywords": "keyword.extra",
        "@default": "identifier" } }],


      ["^(\\s*#)(\\w+)(.*)", { "cases": {
          "$2@directives": ["namespace","namespace","string"],
          "@default": ["meta","meta","string"]
      }}],

      ["^(\\s*@)(\\w+)(.*)", { "cases": {
          "$2@annotations": ["namespace","namespace","string"],
          "@default": ["meta","meta","string"]
      }}],

      { "include": "@whitespace" },

      ["[{}()\\[\\]]", "@brackets"],
      ["[<>](?!@symbols)", "@brackets"],
      ["@symbols", { "cases": {
        "@operators": "operator",
        "@extraOperators": "operator.extra",
        "@default"  : "" } } ],

      ["\\d*\\.\\d+([eE][\\-+]?\\d+)?[fFdD]?", "number.float"],
      ["0[xX][0-9a-fA-F_]*[0-9a-fA-F][Ll]?", "number.hex"],
      ["0[0-7_]*[0-7][Ll]?", "number.octal"],
      ["0[bB][0-1_]*[0-1][Ll]?", "number.binary"],
      ["\\d+[lL]?", "number"],


      ["[;,.]", "delimiter"],


      ["[lL]\"([^\"\\\\]|\\\\.)*$", "string.invalid" ],
      ["\"",  "string", "@string" ],


      ["'[^\\\\']'", "string"],
      ["(')(@escapes)(')", ["string","string.escape","string"]],
      ["'", "string.invalid"]
    ],

    "whitespace": [
      ["[ \\t\\r\\n]+", "white"],
      ["\\/\\*",       "comment", "@comment" ],
      ["\\/\\/.*$",    "comment"]
    ],

    "comment": [
      ["[^\\/*]+", "comment" ],

      ["\\/\\*",    "comment.invalid" ],
      ["\\*/",    "comment", "@pop"  ],
      ["[\\/*]",   "comment" ]
    ],

    "string": [
      ["[^\\\\\"]+",  "string"],
      ["@escapes", "string.escape"],
      ["\\\\.",      "string.escape.invalid"],
      ["\"",        "string", "@pop" ]
    ]
  }
}