context: add builtin_plugins_only options

This patch adds builtin_plugins_only option, which allows user to use
only basic YANG type plugins, instead of using advanced plugins as
ipv4-address etc.

Signed-off-by: Stefan Gula <steweg@gmail.com>

cffi/cdefs.h

@@ -15,6 +15,7 @@ struct ly_ctx;
 #define LY_CTX_REF_IMPLEMENTED ...
 #define LY_CTX_SET_PRIV_PARSED ...
 #define LY_CTX_LEAFREF_EXTENDED ...
+#define LY_CTX_BUILTIN_PLUGINS_ONLY ...
 
 
 typedef enum {

libyang/context.py

@@ -29,6 +29,7 @@ def __init__(
         disable_searchdir_cwd: bool = True,
         explicit_compile: Optional[bool] = False,
         leafref_extended: bool = False,
+        builtin_plugins_only: bool = False,
         yanglib_path: Optional[str] = None,
         yanglib_fmt: str = "json",
         cdata=None,  # C type: "struct ly_ctx *"
@@ -44,6 +45,8 @@ def __init__(
             options |= lib.LY_CTX_EXPLICIT_COMPILE
         if leafref_extended:
             options |= lib.LY_CTX_LEAFREF_EXTENDED
+        if builtin_plugins_only:
+            options |= lib.LY_CTX_BUILTIN_PLUGINS_ONLY
         # force priv parsed
         options |= lib.LY_CTX_SET_PRIV_PARSED
 

tests/test_data.py

@@ -1,6 +1,7 @@
 # Copyright (c) 2020 6WIND S.A.
 # SPDX-License-Identifier: MIT
 
+import gc
 import json
 import os
 import unittest
@@ -1036,3 +1037,13 @@ def test_dnode_attrs_set_and_remove_multiple(self):
 
         attrs.remove("ietf-netconf:operation")
         self.assertEqual(len(attrs), 0)
+
+    def test_dnode_buildin_plugins_only(self):
+        MAIN = {"yolo-nodetypes:ip-address": "test"}
+        self.tearDown()
+        gc.collect()
+        self.ctx = Context(YANG_DIR, builtin_plugins_only=True)
+        module = self.ctx.load_module("yolo-nodetypes")
+        dnode = dict_to_dnode(MAIN, module, None, validate=False, store_only=True)
+        self.assertIsInstance(dnode, DLeaf)
+        dnode.free()

tests/yang/yolo/yolo-nodetypes.yang

@@ -3,6 +3,11 @@ module yolo-nodetypes {
   namespace "urn:yang:yolo:nodetypes";
   prefix sys;
 
+  import ietf-inet-types {
+    prefix inet;
+    revision-date 2013-07-15;
+  }
+
   description
     "YOLO Nodetypes.";
 
@@ -81,4 +86,8 @@ module yolo-nodetypes {
   leaf test1 {
     type uint8;
   }
+
+  leaf ip-address {
+    type inet:ipv4-address;
+  }
 }