1 files changed, 31 insertions, 0 deletions
diff --git a/misc/lldb_rb/commands/print_flags_command.py b/misc/lldb_rb/commands/print_flags_command.py
new file mode 100644
index 0000000000..00da4834bf
--- /dev/null
+++ b/misc/lldb_rb/commands/print_flags_command.py
@@ -0,0 +1,31 @@
+import lldb
+import re
+
+from lldb_rb.constants import *
+from lldb_rb.rb_base_command import RbBaseCommand
+
+class PrintFlagsCommand(RbBaseCommand):
+    program = "print_flags"
+
+    help_string = "Print out the individial flags of an RVALUE object in human readable format"
+
+    # call is where our command logic will be implemented
+    def call(self, debugger, command, exe_ctx, result):
+        rclass_t = self.target.FindFirstType("struct RBasic")
+        rcass_ptr = self.target.EvaluateExpression(command).Cast(rclass_t.GetPointerType())
+        obj_flags = rcass_ptr.GetValueForExpressionPath("->flags").GetValueAsUnsigned()
+
+        flags = [
+            "RUBY_FL_WB_PROTECTED", "RUBY_FL_PROMOTED0", "RUBY_FL_PROMOTED1", "RUBY_FL_FINALIZE",
+            "RUBY_FL_SHAREABLE", "RUBY_FL_EXIVAR", "RUBY_FL_FREEZE",
+            "RUBY_FL_USER0", "RUBY_FL_USER1", "RUBY_FL_USER2", "RUBY_FL_USER3", "RUBY_FL_USER4",
+            "RUBY_FL_USER5", "RUBY_FL_USER6", "RUBY_FL_USER7", "RUBY_FL_USER8", "RUBY_FL_USER9",
+            "RUBY_FL_USER10", "RUBY_FL_USER11", "RUBY_FL_USER12", "RUBY_FL_USER13", "RUBY_FL_USER14",
+            "RUBY_FL_USER15", "RUBY_FL_USER16", "RUBY_FL_USER17", "RUBY_FL_USER18"
+        ]
+
+        types_index = {v: k for k, v in self.ruby_globals.items() if re.match(r'RUBY_T_', k)}
+        print("TYPE: {}".format(types_index[obj_flags & self.ruby_globals["RUBY_T_MASK"]]))
+        for flag in flags:
+            output = "{} : {}".format(flag, "1" if (obj_flags & self.ruby_globals[flag]) else "0")
+            print(output, file=result)