Reduce schema duplication by adding more references

IPython/nbformat/v4/v4.withref.json

@@ -1,338 +1,334 b''
 {
     "$schema": "http://json-schema.org/draft-03/schema#",
     "description": "IPython Notebook v4.0 JSON schema.",
     "type": "object",
     "additionalProperties": false,
     "properties": {
         "metadata": {
             "description": "Notebook root-level metadata.",
             "type": "object",
             "required": true,
             "additionalProperties": true,
             "properties": {
                 "language": {
                     "description": "Language of the notebook's kernel.",
                     "type": "string",
                     "required": true
                 },
                 "kernel_info": {
                     "description": "Other kernel information, to be determined.",
                     "type": "object",
                     "required": true,
                     "additionalProperties": true
                 },
                 "signature": {
                     "description": "Hash of the notebook.",
                     "type": "string",
                     "required": false
                 }
             }
         },
         "nbformat_minor": {
             "description": "Notebook format (minor number). Incremented for slight changes to the notebook format.",
             "type": "integer",
             "required": true,
             "minimum": 0
         },
         "nbformat": {
             "description": "Notebook format (major number). Incremented between backwards incompatible changes to the notebook format.",
             "type": "integer",
             "required": true,
             "minimum": 4,
             "maximum": 4
         },
         "orig_nbformat": {
             "description": "Original notebook format (major number) before converting the notebook between versions.",
             "type": "integer",
             "required": false,
             "minimum": 1
         },
         "cells": {
             "description": "Array of cells of the current notebook.",
             "type": "array",
             "required": true,
             "items": {
                 "type": [
                     {"$ref": "/definitions/raw_cell"},
                     {"$ref": "/definitions/markdown_cell"},
                     {"$ref": "/definitions/heading_cell"},
                     {"$ref": "/definitions/code_cell"}
                 ]
             }
         }
     },
 
     "definitions": {
 
-        "cell_metadata_name": {
-            "description": "The cell's name. If present, must be a non-empty string.",
-            "type": "string",
-            "required": false,
-            "pattern": "^.+$"
-        },
-
-        "cell_metadata_tags": {
-            "description": "The cell's tags. Tags must be unique, and must not contain commas.",
-            "type": "array",
-            "required": false,
-            "uniqueItems": true,
-            "items": {
-                "type": "string",
-                "pattern": "^[^,]+$"
-            }
-        },
-
         "raw_cell": {
             "description": "Notebook raw nbconvert cell.",
             "type": "object",
             "additionalProperties": false,
             "properties": {
                 "cell_type": {
                     "description": "String identifying the type of cell.",
                     "enum": ["raw"],
                     "required": true
                 },
                 "metadata": {
                     "description": "Cell-level metadata.",
                     "type": "object",
                     "required": true,
                     "additionalProperties": true,
                     "properties": {
                         "format": {
                             "description": "Raw cell metadata format for nbconvert.",
                             "type": "string",
                             "required": false
                         },
-                        "name": {"$ref": "/definitions/cell_metadata_name"},
-                        "tags": {"$ref": "/definitions/cell_metadata_tags"}
+                        "name": {"$ref": "/definitions/misc/metadata_name"},
+                        "tags": {"$ref": "/definitions/misc/metadata_tags"}
                     }
                 },
-                "source": {
-                    "description": "Contents of the cell, represented as an array of lines.",
-                    "type": "array",
-                    "required": true,
-                    "items": {"type": "string"}
-                }
+                "source": {"$ref": "/definitions/misc/source"}
             }
         },
 
         "markdown_cell": {
             "description": "Notebook markdown cell.",
             "type": "object",
             "additionalProperties": false,
             "properties": {
                 "cell_type": {
                     "description": "String identifying the type of cell.",
                     "enum": ["markdown"],
                     "required": true
                 },
                 "metadata": {
                     "description": "Cell-level metadata.",
                     "type": "object",
                     "required": true,
                     "properties": {
-                        "name": {"$ref": "/definitions/cell_metadata_name"},
-                        "tags": {"$ref": "/definitions/cell_metadata_tags"}
+                        "name": {"$ref": "/definitions/misc/metadata_name"},
+                        "tags": {"$ref": "/definitions/misc/metadata_tags"}
                     },
                     "additionalProperties": true
                 },
-                "source": {
-                    "description": "Contents of the cell, represented as an array of lines.",
-                    "type": "array",
-                    "required": true,
-                    "items": {"type": "string"}
-                }
+                "source": {"$ref": "/definitions/misc/source"}
             }
         },
 
         "heading_cell": {
             "description": "Notebook heading cell.",
             "type": "object",
             "additionalProperties": false,
             "properties": {
                 "cell_type": {
                     "description": "String identifying the type of cell.",
                     "enum": ["heading"],
                     "required": true
                 },
                 "metadata": {
                     "description": "Cell-level metadata.",
                     "type": "object",
                     "required": true,
                     "properties": {
-                        "name": {"$ref": "/definitions/cell_metadata_name"},
-                        "tags": {"$ref": "/definitions/cell_metadata_tags"}
+                        "name": {"$ref": "/definitions/misc/metadata_name"},
+                        "tags": {"$ref": "/definitions/misc/metadata_tags"}
                     },
                     "additionalProperties": true
                 },
-                "source": {
-                    "description": "Contents of the cell, represented as an array of lines.",
-                    "type": "array",
-                    "required": true,
-                    "items": {"type": "string"}
-                },
+                "source": {"$ref": "/definitions/misc/source"},
                 "level": {
                     "description": "Level of heading cells.",
                     "type": "integer",
                     "required": true,
                     "minimum": 1,
                     "maximum": 6
                 }
             }
         },
 
         "code_cell": {
             "description": "Notebook code cell.",
             "type": "object",
             "additionalProperties": false,
             "properties": {
                 "cell_type": {
                     "description": "String identifying the type of cell.",
                     "enum": ["code"],
                     "required": true
                 },
                 "metadata": {
                     "description": "Cell-level metadata.",
                     "type": "object",
                     "required": true,
                     "additionalProperties": true,
                     "properties": {
                         "collapsed": {
                             "description": "Whether the cell is collapsed/expanded.",
                             "type": "boolean",
                             "required": true
                         },
                         "autoscroll": {
                             "description": "Whether the cell's output should autoscroll.",
                             "type": "boolean",
                             "required": true
                         },
-                        "name": {"$ref": "/definitions/cell_metadata_name"},
-                        "tags": {"$ref": "/definitions/cell_metadata_tags"}
+                        "name": {"$ref": "/definitions/misc/metadata_name"},
+                        "tags": {"$ref": "/definitions/misc/metadata_tags"}
                     }
                 },
-                "source": {
-                    "description": "Contents of the cell, represented as an array of lines.",
-                    "type": "array",
-                    "required": true,
-                    "items": {"type": "string"}
-                },
+                "source": {"$ref": "/definitions/misc/source"},
                 "outputs": {
                     "description": "Execution, display, or stream outputs.",
                     "type": "array",
                     "required": true,
                     "items": {
                         "type": [
                             {"$ref": "/definitions/execute_output"},
+                            {"$ref": "/definitions/display_data_output"},
                             {"$ref": "/definitions/stream_output"},
                             {"$ref": "/definitions/error_output"}
                         ]
                     }
                 },
                 "prompt_number": {
                     "description": "The code cell's prompt number. Will be null if the cell has not been run.",
                     "type": ["integer", "null"],
                     "required": true,
                     "minimum": 0
                 }
             }
         },
 
         "execute_output": {
             "description": "Result of executing a code cell.",
             "type": "object",
             "additionalProperties": false,
             "properties": {
                 "output_type": {
                     "description": "Type of cell output.",
-                    "enum": ["execute_output", "display_data"],
+                    "enum": ["execute_output"],
                     "required": true
                 },
-                "metadata": {
-                    "description": "Cell output metadata.",
-                    "type": "object",
-                    "required": true,
-                    "additionalProperties": true
+                "metadata": {"$ref": "/definitions/misc/output_metadata"},
+                "prompt_number": {"$ref": "/definitions/misc/prompt_number"}
+            },
+            "patternProperties": {"$ref": "/definitions/misc/mimetype"}
+        },
+
+        "display_data_output": {
+            "description": "Data displayed as a result of code cell execution.",
+            "type": "object",
+            "additionalProperties": false,
+            "properties": {
+                "output_type": {
+                    "description": "Type of cell output.",
+                    "enum": ["display_data"],
+                    "required": true
                 },
-                "prompt_number": {
-                    "description": "The code cell's prompt number. Will be null if the cell has not been run.",
-                    "type": ["integer", "null"],
-                    "required": false,
-                    "minimum": 0
-                }
+                "metadata": {"$ref": "/definitions/misc/output_metadata"}
             },
-            "patternProperties": {
-                "^[a-zA-Z0-9+-]+/[a-zA-Z0-9+-]+$": {
-                    "description": "The cell's mimetype output (e.g. text/plain), represented as either an array of strings or a string.",
-                    "type": ["string", "array"],
-                    "required": false
-                }
-            }
+            "patternProperties": {"$ref": "/definitions/misc/mimetype"}
         },
 
         "stream_output": {
             "description": "Stream output from a code cell.",
             "type": "object",
             "additionalProperties": false,
             "properties": {
                 "output_type": {
                     "description": "Type of cell output.",
                     "enum": ["stream"],
                     "required": true
                 },
-                "metadata": {
-                    "description": "Cell output metadata.",
-                    "type": "object",
-                    "required": true,
-                    "additionalProperties": true
-                },
+                "metadata": {"$ref": "/definitions/misc/output_metadata"},
                 "stream": {
                     "description": "The stream type/destination.",
                     "type": "string",
                     "required": true
                 },
                 "text/plain": {
                     "description": "The stream's text output, represented as an array of strings.",
                     "type": "array",
                     "required": false,
                     "items": {"type": "string"}
                 }
             }
         },
 
         "error_output": {
             "description": "Output of an error that occurred during code cell execution.",
             "type": "object",
             "additionalProperties": false,
             "properties": {
                 "output_type": {
                     "description": "Type of cell output.",
                     "enum": ["error"],
                     "required": true
                 },
-                "metadata": {
-                    "description": "Cell output metadata.",
-                    "type": "object",
-                    "required": true,
-                    "additionalProperties": true
-                },
+                "metadata": {"$ref": "/definitions/misc/output_metadata"},
                 "ename": {
                     "description": "The name of the error.",
                     "type": "string",
                     "required": true
                 },
                 "evalue": {
                     "description": "The value, or message, of the error.",
                     "type": "string",
                     "required": true
                 },
                 "traceback": {
                     "description": "The error's traceback, represented as an array of strings.",
                     "type": "array",
                     "required": true,
                     "items": {"type": "string"}
                 }
             }
+        },
+
+        "misc": {
+            "metadata_name": {
+                "description": "The cell's name. If present, must be a non-empty string.",
+                "type": "string",
+                "required": false,
+                "pattern": "^.+$"
+            },
+            "metadata_tags": {
+                "description": "The cell's tags. Tags must be unique, and must not contain commas.",
+                "type": "array",
+                "required": false,
+                "uniqueItems": true,
+                "items": {
+                    "type": "string",
+                    "pattern": "^[^,]+$"
+                }
+            },
+            "source": {
+                "description": "Contents of the cell, represented as an array of lines.",
+                "type": "array",
+                "required": true,
+                "items": {"type": "string"}
+            },
+            "prompt_number": {
+                "description": "The code cell's prompt number. Will be null if the cell has not been run.",
+                "type": ["integer", "null"],
+                "required": true,
+                "minimum": 0
+            },
+            "mimetype": {
+                "^[a-zA-Z0-9+-]+/[a-zA-Z0-9+-]+$": {
+                    "description": "The cell's mimetype output (e.g. text/plain), represented as either an array of strings or a string.",
+                    "type": ["string", "array"],
+                    "required": false
+                }
+            },
+            "output_metadata": {
+                "description": "Cell output metadata.",
+                "type": "object",
+                "required": true,
+                "additionalProperties": true
+            }
         }
     }
 }