Merge #7059

7059: Update HashMap/HashSet pretty-printers to Rust 1.52 r=Undin a=ortem

The corresponding PRs in rustc:
rust-lang/rust#77566
rust-lang/rust#83920

Fixes #7045

changelog: Update LLDB/GDB pretty-printers to render `HashMap`/`HashSet` on Rust 1.52 or higher

Co-authored-by: ortem <ortem00@gmail.com>

Author: bors[bot]

prettyPrinters/gdb_providers.py

@@ -337,17 +337,23 @@ def __init__(self, valobj, show_values=True):
         self.show_values = show_values
 
         table = self.table()
-        capacity = int(table["bucket_mask"]) + 1
-        ctrl = table["ctrl"]["pointer"]
+        # BACKCOMPAT: rust 1.51. Just drop `else` branch
+        if table.type.fields()[0].name == "table":
+            inner_table = table["table"]
+        else:
+            inner_table = table
+
+        capacity = int(inner_table["bucket_mask"]) + 1
+        ctrl = inner_table["ctrl"]["pointer"]
 
-        self.size = int(table["items"])
+        self.size = int(inner_table["items"])
         self.pair_type = table.type.template_argument(0).strip_typedefs()
 
-        self.new_layout = "data" not in table.type
+        self.new_layout = "data" not in inner_table.type
         if self.new_layout:
             self.data_ptr = ctrl.cast(self.pair_type.pointer())
         else:
-            self.data_ptr = table["data"]["pointer"]
+            self.data_ptr = inner_table["data"]["pointer"]
 
         self.valid_indices = []
         for idx in range(capacity):

prettyPrinters/lldb_providers.py

@@ -377,18 +377,24 @@ def get_child_at_index(self, index):
     def update(self):
         # type: () -> None
         table = self.table()
-        capacity = table.GetChildMemberWithName("bucket_mask").GetValueAsUnsigned() + 1
-        ctrl = table.GetChildMemberWithName("ctrl").GetChildAtIndex(0)
+        # BACKCOMPAT: rust 1.51. Just drop `else` branch
+        if table.GetChildMemberWithName("table").IsValid():
+            inner_table = table.GetChildMemberWithName("table")
+        else:
+            inner_table = table
+
+        capacity = inner_table.GetChildMemberWithName("bucket_mask").GetValueAsUnsigned() + 1
+        ctrl = inner_table.GetChildMemberWithName("ctrl").GetChildAtIndex(0)
 
-        self.size = table.GetChildMemberWithName("items").GetValueAsUnsigned()
+        self.size = inner_table.GetChildMemberWithName("items").GetValueAsUnsigned()
         self.pair_type = table.type.template_args[0].GetTypedefedType()
         self.pair_type_size = self.pair_type.GetByteSize()
 
-        self.new_layout = not table.GetChildMemberWithName("data").IsValid()
+        self.new_layout = not inner_table.GetChildMemberWithName("data").IsValid()
         if self.new_layout:
             self.data_ptr = ctrl.Cast(self.pair_type.GetPointerType())
         else:
-            self.data_ptr = table.GetChildMemberWithName("data").GetChildAtIndex(0)
+            self.data_ptr = inner_table.GetChildMemberWithName("data").GetChildAtIndex(0)
 
         u8_type = self.valobj.GetTarget().GetBasicType(eBasicTypeUnsignedChar)
         u8_type_size = self.valobj.GetTarget().GetBasicType(eBasicTypeUnsignedChar).GetByteSize()

pretty_printers_tests/tests/hash_map.rs

@@ -1,5 +1,4 @@
 // min-version: 1.33.0
-// max-version: 1.51.0
 
 // === LLDB TESTS ==================================================================================