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"""
Test lldb data formatter subsystem.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class LibCxxFunctionTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
# Run frame var for a variable twice. Verify we do not hit the cache
# the first time but do the second time.
def run_frame_var_check_cache_use(self, variable, result_to_match, skip_find_function=False):
self.runCmd("log timers reset")
self.expect("frame variable " + variable,
substrs=[variable + " = " + result_to_match])
if not skip_find_function:
self.expect("log timers dump",
substrs=["lldb_private::CompileUnit::FindFunction"])
self.runCmd("log timers reset")
self.expect("frame variable " + variable,
substrs=[variable + " = " + result_to_match])
self.expect("log timers dump",
matching=False,
substrs=["lldb_private::CompileUnit::FindFunction"])
@add_test_categories(["libc++"])
def test(self):
"""Test that std::function as defined by libc++ is correctly printed by LLDB"""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
bkpt = self.target().FindBreakpointByID(
lldbutil.run_break_set_by_source_regexp(
self, "Set break point at this line."))
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
self.run_frame_var_check_cache_use("foo2_f", "Lambda in File main.cpp at Line 22")
lldbutil.continue_to_breakpoint(self.process(), bkpt)
self.run_frame_var_check_cache_use("add_num2_f", "Lambda in File main.cpp at Line 13")
lldbutil.continue_to_breakpoint(self.process(), bkpt)
self.run_frame_var_check_cache_use("f2", "Lambda in File main.cpp at Line 35")
self.run_frame_var_check_cache_use("f3", "Lambda in File main.cpp at Line 39", True)
# TODO reenable this case when std::function formatter supports
# general callable object case.
#self.run_frame_var_check_cache_use("f4", "Function in File main.cpp at Line 8")
# These cases won't hit the cache at all but also don't require
# an expensive lookup.
self.expect("frame variable f1",
substrs=['f1 = Function = foo(int, int)'])
self.expect("frame variable f5",
substrs=['f5 = Function = Bar::add_num(int) const'])
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