{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "definitions": {
    "point": {
      "type": "object",
      "properties": {
        "line": {
          "type": "integer"
        },
        "column": {
          "type": "integer"
        }
      },
      "required": ["line", "column"]
    },
    "buffer": {
      "type": "object",
      "properties": {
        "name": {
          "oneOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        }
      },
      "required": ["name"]
    },
    "location": {
      "type": "object",
      "properties": {
        "start": {
          "$ref": "#/definitions/point"
        },
        "end": {
          "$ref": "#/definitions/point"
        },
        "buffer": {
          "$ref": "#/definitions/buffer"
        }
      },
      "required": ["start", "end", "buffer"]
    }
  },
  "oneOf": [
    {
      "$ref": "#/definitions/location"
    },
    {
      "type": "null"
    }
  ]
}