Validation error on anyOf property

[JoranHonig]

Describe the bug Model generation seems to fail on anyOf, I encountered this issue for the SARIF spec:

• https://raw.githubusercontent.com/oasis-tcs/sarif-spec/123e95847b13fbdd4cbe2120fa5e33355d4a042b/Schemata/sarif-schema-2.1.0.json

To Reproduce

Used commandline:

wget https://raw.githubusercontent.com/oasis-tcs/sarif-spec/123e95847b13fbdd4cbe2120fa5e33355d4a042b/Schemata/sarif-schema-2.1.0.json
$ datamodel-codegen sarif-schema-2.1.0.json --output model.py

...
  File "pydantic/main.py", line 341, in pydantic.main.BaseModel.__init__
pydantic.error_wrappers.ValidationError: 2 validation errors for JsonSchemaObject
properties -> anyOf
  value is not a valid dict (type=type_error.dict)
properties -> anyOf
  value could not be parsed to a boolean (type=type_error.bool)

Expected behavior No errors 😅

[gaborbernat]

PR welcome.

[minomocca]

@JoranHonig @gaborbernat

For me this looks like an issue with the schema provided and not a bug. The anyOf under region has wrong indent and is part of properties, which is correct in main branch of SARIF spec

--- sarif-schema-2.1.0.issue.json	2025-05-30 08:54:39.366734510 +0200
+++ sarif-schema-2.1.0.main.json	2025-05-30 08:44:56.320744399 +0200
@@ -1,7 +1,7 @@
 {
-  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$schema": "http://json-schema.org/draft-04/schema#",
   "title": "Static Analysis Results Format (SARIF) Version 2.1.0 JSON Schema",
-  "$id": "https://raw.githubusercontent.com/oasis-tcs/sarif-spec/master/Schemata/sarif-schema-2.1.0.json",
+  "id": "https://docs.oasis-open.org/sarif/sarif/v2.1.0/errata01/os/schemas/sarif-schema-2.1.0.json",
   "description": "Static Analysis Results Format (SARIF) Version 2.1.0 JSON Schema: a standard format for the output of static analysis tools.",
   "additionalProperties": false,
   "type": "object",
@@ -1778,14 +1778,14 @@
         "properties": {
           "description": "Key/value pairs that provide additional information about the region.",
           "$ref": "#/definitions/propertyBag"
-        },
+        }
+      },
 
-        "anyOf": [
-          { "required": [ "startLine" ] },
-          { "required": [ "charOffset" ] },
-          { "required": [ "byteOffset" ] }
-        ]
-      }
+      "anyOf": [
+        { "required": [ "startLine" ] },
+        { "required": [ "charOffset" ] },
+        { "required": [ "byteOffset" ] }
+      ]
     },
 
     "replacement": {

datamodel-codegen works fine with the current version of SARIF spec.

[ilovelinux]

@JoranHonig could you confirm it was a SARIF spec issue rather than a datamodel-codegen issue? Thanks!