[Mlir-commits] [mlir] [mlir][python] Add `walk` method to PyOperationBase (PR #87962)

[Oleksandr Alex Zinenko]

================
@@ -1015,3 +1015,36 @@ def testOperationParse():
         print(
             f"op_with_source_name: {o.get_asm(enable_debug_info=True, use_local_scope=True)}"
         )
+
+
+# CHECK-LABEL: TEST: testOpWalk
+ at run
+def testOpWalk():
+    ctx = Context()
+    ctx.allow_unregistered_dialects = True
+    module = Module.parse(
+        r"""
+    builtin.module {
+      func.func @f() {
+        func.return
+      }
+    }
+  """,
+        ctx,
+    )
+    callback = lambda op: print(op.name)
+    # Test post-order walk (default).
+    # CHECK-NEXT:  Post-order
+    # CHECK-NEXT:  func.return
+    # CHECK-NEXT:  func.func
+    # CHECK-NEXT:  builtin.module
+    print("Post-order")
+    module.operation.walk(callback)
+
+    # Test pre-order walk.
+    # CHECK-NEXT:  Pre-order
+    # CHECK-NEXT:  builtin.module
+    # CHECK-NEXT:  func.fun
+    # CHECK-NEXT:  func.return
+    print("Pre-order")
+    module.operation.walk(callback, True)
----------------
ftynse wrote:

Could we test what happens if the callback raises an error?

https://github.com/llvm/llvm-project/pull/87962