{
  "scopeName": "source.ocaml.opam",
  "fileTypes": ["opam"],
  "patterns": [{ "include": "#comments" }, { "include": "#fields" }, { "include": "#values" }],
  "repository": {
    "comments": {
      "patterns": [
        {
          "comment": "block comment",
          "name": "comment.block.opam",
          "begin": "\\(\\*",
          "end": "\\*\\)"
        },
        {
          "comment": "line comment",
          "name": "comment.line.opam",
          "begin": "#",
          "end": "$"
        }
      ]
    },

    "fields": {
      "comment": "labeled field",
      "match": "^([[:word:]-]*[[:alpha:]][[:word:]-]*)(:)",
      "captures": {
        "1": { "name": "entity.name.tag.opam" },
        "2": { "name": "keyword.operator.opam" }
      }
    },

    "values": {
      "patterns": [
        {
          "comment": "boolean literal",
          "name": "constant.language.opam",
          "match": "\\b(true|false)\\b"
        },
        {
          "comment": "integer literal",
          "name": "constant.numeric.decimal.opam",
          "match": "(\\b|\\-?)[[:digit:]]+\\b"
        },
        {
          "comment": "double-quote string literal",
          "name": "string.quoted.double.opam",
          "begin": "\"",
          "end": "\"",
          "patterns": [{ "include": "#string-elements" }]
        },
        {
          "comment": "triple-double-quote string literal",
          "name": "string.quoted.triple-double.opam",
          "begin": "\"\"\"",
          "end": "\"\"\"",
          "patterns": [{ "include": "#string-elements" }]
        },
        {
          "comment": "operator",
          "name": "keyword.operator.opam",
          "match": "[!=<>\\|&?:]+"
        },
        {
          "comment": "identifier",
          "match": "\\b([[:word:]+-]+)\\b",
          "name": "variable.parameter.opam"
        }
      ]
    },

    "string-elements": {
      "patterns": [
        {
          "comment": "escaped backslash",
          "name": "constant.character.escape.opam",
          "match": "\\\\\\\\"
        },
        {
          "comment": "escaped quote or whitespace",
          "name": "constant.character.escape.opam",
          "match": "\\\\[\"ntbr\\n]"
        },
        {
          "comment": "character from decimal ASCII code",
          "name": "constant.character.escape.opam",
          "match": "\\\\[[:digit:]]{3}"
        },
        {
          "comment": "character from hexadecimal ASCII code",
          "name": "constant.character.escape.opam",
          "match": "\\\\x[[:xdigit:]]{2}"
        },
        {
          "comment": "variable interpolation",
          "name": "constant.variable.opam",
          "begin": "%\\{",
          "end": "}\\%"
        },
        {
          "comment": "unknown escape sequence",
          "name": "invalid.illegal.unknown-escape.opam",
          "match": "\\\\."
        }
      ]
    }
  }
}