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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)
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