"""Check that compiler-generated register values work correctly"""

from __future__ import print_function



import os, time
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil

class RegisterVariableTestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    @expectedFailureAll(oslist=['macosx'], compiler='clang', compiler_version=['<', '7.0.0'], debug_info="dsym")
    @expectedFailureAll(compiler="clang")
    @expectedFailureAll(compiler="gcc", compiler_version=['>=', '4.8.2'])
    def test_and_run_command(self):
        """Test expressions on register values."""
        self.build()
        exe = os.path.join(os.getcwd(), "a.out")
        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)

        # Break inside the main.
        lldbutil.run_break_set_by_source_regexp(self, "break", num_expected_locations=3)

        ####################
        # First breakpoint

        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'])

        # The breakpoint should have a hit count of 1.
        self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
            substrs = [' resolved, hit count = 1'])

        # Try some variables that should be visible
        self.expect("expr a", VARIABLES_DISPLAYED_CORRECTLY,
            substrs = ['(int) $0 = 2'])

        self.expect("expr b->m1", VARIABLES_DISPLAYED_CORRECTLY,
            substrs = ['(int) $1 = 3'])

        #####################
        # Second breakpoint

        self.runCmd("continue")

        # The stop reason of the thread should be breakpoint.
        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
            substrs = ['stopped',
                       'stop reason = breakpoint'])

        # The breakpoint should have a hit count of 1.
        self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
            substrs = [' resolved, hit count = 1'])

        # Try some variables that should be visible
        self.expect("expr b->m2", VARIABLES_DISPLAYED_CORRECTLY,
            substrs = ['(int) $2 = 5'])

        self.expect("expr c", VARIABLES_DISPLAYED_CORRECTLY,
            substrs = ['(int) $3 = 5'])

        #####################
        # Third breakpoint

        self.runCmd("continue")

        # The stop reason of the thread should be breakpoint.
        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
            substrs = ['stopped',
                       'stop reason = breakpoint'])

        # The breakpoint should have a hit count of 1.
        self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
            substrs = [' resolved, hit count = 1'])

        # Try some variables that should be visible
        self.expect("expr f", VARIABLES_DISPLAYED_CORRECTLY,
            substrs = ['(float) $4 = 3.1'])

        self.runCmd("kill")
