koxudaxi · koxudaxi · Jul 17, 2023 · Jul 17, 2023
diff --git a/src/com/koxudaxi/pydantic/PydanticInspection.kt b/src/com/koxudaxi/pydantic/PydanticInspection.kt
@@ -94,6 +94,31 @@ class PydanticInspection : PyInspection() {
             inspectDefaultFactory(node)
         }
 
+        override fun visitPyReferenceExpression(node: PyReferenceExpression) {
+            if(!pydanticCacheService.isV2) return
+            val pyFunction = node.reference.resolve() as? PyFunction ?: return
+
+            val qualifiedName = (pyFunction as? PyQualifiedNameOwner)?.qualifiedName ?: return
+            if (!qualifiedName.startsWith("pydantic.")) return
+            if (!isPydanticDeprecatedSince20(pyFunction)) return
+            registerProblem(
+                node.nameElement?.psi ?: node,
+                 "<html><body>" +
+                         "Pydantic V2 Migration Guide: " +
+                         "<a href=\"https://docs.pydantic.dev/dev-v2/migration/\">" +
+                         "https://docs.pydantic.dev/dev-v2/migration/" +
+                         "</a>" +
+                         "</body></html>",
+                ProblemHighlightType.LIKE_DEPRECATED
+            )
+
+        }
+        private fun isPydanticDeprecatedSince20(pyFunction: PyFunction): Boolean =
+            pyFunction.statementList.statements.filterIsInstance<PyExpressionStatement>()
+                .mapNotNull { (it.expression as? PyCallExpression)?.getArgument(1, PyReferenceExpression::class.java) }
+                .any { (it.reference.resolve() as? PyTargetExpression)?.findAssignedValue()?.name == "PydanticDeprecatedSince20" }
+
+
         private fun inspectCustomRootFieldV2(pyClass: PyClass) {
             if (getRootField(pyClass) == null) return
             if (!isPydanticModel(pyClass, false, myTypeEvalContext)) return

diff --git a/testData/inspectionv2/validators.py b/testData/inspectionv2/validators.py
@@ -0,0 +1,26 @@
+from pydantic import BaseModel, <warning descr="Pydantic V2 Migration Guide: https://docs.pydantic.dev/dev-v2/migration/">validator</warning>, <warning descr="Pydantic V2 Migration Guide: https://docs.pydantic.dev/dev-v2/migration/">root_validator</warning>
+
+def check(func):
+    def inner():
+        func()
+    return inner
+
+class A(BaseModel):
+    a: str
+
+
+    @<warning descr="Pydantic V2 Migration Guide: https://docs.pydantic.dev/dev-v2/migration/">validator</warning>('a')
+    def validate_a(cls):
+        pass
+
+    @<warning descr="Pydantic V2 Migration Guide: https://docs.pydantic.dev/dev-v2/migration/">root_validator</warning>()
+    def validate_root(cls):
+        pass
+
+
+    def dummy(self):
+        pass
+
+    @check
+    def task(self):
+        pass
diff --git a/testData/mock/pydanticv2/__init__.py b/testData/mock/pydanticv2/__init__.py
@@ -21,5 +21,6 @@
 from .types import *
 from .config import ConfigDict
 from .version import VERSION
+from .deprecated import validator, root_validator
 
 __version__ = VERSION
diff --git a/testData/mock/pydanticv2/deprecated/__init__.py b/testData/mock/pydanticv2/deprecated/__init__.py
@@ -0,0 +1 @@
+from class_validators import validator, root_validator
diff --git a/testData/mock/pydanticv2/deprecated/class_validators.py b/testData/mock/pydanticv2/deprecated/class_validators.py
@@ -0,0 +1,39 @@
+from warnings import warn
+
+from ..warnings import PydanticDeprecatedSince20
+
+DeprecationWarning = PydanticDeprecatedSince20
+
+
+def validator(
+        __field: str,
+        *fields: str,
+        pre: bool = False,
+        each_item: bool = False,
+        always: bool = False,
+        check_fields: bool | None = None,
+        allow_reuse: bool = False,
+) -> Callable[[_V1ValidatorType], _V1ValidatorType]:
+
+    warn(
+        'Pydantic V1 style `@validator` validators are deprecated.'
+        ' You should migrate to Pydantic V2 style `@field_validator` validators,'
+        ' see the migration guide for more details',
+        DeprecationWarning,
+        stacklevel=2,
+    )
+
+
+def root_validator(
+        *__args,
+        pre: bool = False,
+        skip_on_failure: bool = False,
+        allow_reuse: bool = False,
+) -> Any:
+    warn(
+        'Pydantic V1 style `@root_validator` validators are deprecated.'
+        ' You should migrate to Pydantic V2 style `@model_validator` validators,'
+        ' see the migration guide for more details',
+        DeprecationWarning,
+        stacklevel=2,
+    )
diff --git a/testSrc/com/koxudaxi/pydantic/PydanticInspectionV2Test.kt b/testSrc/com/koxudaxi/pydantic/PydanticInspectionV2Test.kt
@@ -23,4 +23,8 @@ open class PydanticInspectionV2Test : PydanticInspectionBase(version = "v2") {
     fun testReadOnlyPropertyFrozenConfigDict() {
         doTest()
     }
+
+    fun testValidators() {
+        doTest()
+    }
 }