"""
Test lldb data formatter subsystem.
"""

from __future__ import print_function


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


class SkipSummaryDataFormatterTestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    @expectedFailureAll(
        oslist=['freebsd'],
        bugnumber="llvm.org/pr20548 fails to build on lab.llvm.org buildbot")
    @expectedFailureAll(
        oslist=["windows"],
        bugnumber="llvm.org/pr24462, Data formatters have problems on Windows")
    def test_with_run_command(self):
        """Test data formatter commands."""
        self.build()
        self.data_formatter_commands()

    def setUp(self):
        # Call super's setUp().
        TestBase.setUp(self)
        # Find the line number to break at.
        self.line = line_number('main.cpp', '// Set break point at this line.')

    def data_formatter_commands(self):
        """Test that that file and class static variables display correctly."""
        self.runCmd("file a.out", CURRENT_EXECUTABLE_SET)

        #import lldbsuite.test.lldbutil as lldbutil
        lldbutil.run_break_set_by_file_and_line(
            self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)

        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'])

        # This is the function to remove the custom formats in order to have a
        # clean slate for the next test case.
        def cleanup():
            self.runCmd('type format clear', check=False)
            self.runCmd('type summary clear', check=False)

        # Execute the cleanup function during test case tear down.
        self.addTearDownHook(cleanup)

        # Setup the summaries for this scenario
        #self.runCmd("type summary add --summary-string \"${var._M_dataplus._M_p}\" std::string")
        self.runCmd(
            "type summary add --summary-string \"Level 1\" \"DeepData_1\"")
        self.runCmd(
            "type summary add --summary-string \"Level 2\" \"DeepData_2\" -e")
        self.runCmd(
            "type summary add --summary-string \"Level 3\" \"DeepData_3\"")
        self.runCmd(
            "type summary add --summary-string \"Level 4\" \"DeepData_4\"")
        self.runCmd(
            "type summary add --summary-string \"Level 5\" \"DeepData_5\"")

        # Default case, just print out summaries
        self.expect('frame variable',
                    substrs=['(DeepData_1) data1 = Level 1',
                             '(DeepData_2) data2 = Level 2 {',
                             'm_child1 = Level 3',
                             'm_child2 = Level 3',
                             'm_child3 = Level 3',
                             'm_child4 = Level 3',
                             '}'])

        # Skip the default (should be 1) levels of summaries
        self.expect('frame variable --no-summary-depth',
                    substrs=['(DeepData_1) data1 = {',
                             'm_child1 = 0x',
                             '}',
                             '(DeepData_2) data2 = {',
                             'm_child1 = Level 3',
                             'm_child2 = Level 3',
                             'm_child3 = Level 3',
                             'm_child4 = Level 3',
                             '}'])

        # Now skip 2 levels of summaries
        self.expect('frame variable --no-summary-depth=2',
                    substrs=['(DeepData_1) data1 = {',
                             'm_child1 = 0x',
                             '}',
                             '(DeepData_2) data2 = {',
                             'm_child1 = {',
                             'm_child1 = 0x',
                             'Level 4',
                             'm_child2 = {',
                             'm_child3 = {',
                             '}'])

        # Check that no "Level 3" comes out
        self.expect(
            'frame variable data1.m_child1 --no-summary-depth=2',
            matching=False,
            substrs=['Level 3'])

        # Now expand a pointer with 2 level of skipped summaries
        self.expect('frame variable data1.m_child1 --no-summary-depth=2',
                    substrs=['(DeepData_2 *) data1.m_child1 = 0x'])

        # Deref and expand said pointer
        self.expect('frame variable *data1.m_child1 --no-summary-depth=2',
                    substrs=['(DeepData_2) *data1.m_child1 = {',
                             'm_child2 = {',
                             'm_child1 = 0x',
                             'Level 4',
                             '}'])

        # Expand an expression, skipping 2 layers of summaries
        self.expect(
            'frame variable data1.m_child1->m_child2 --no-summary-depth=2',
            substrs=[
                '(DeepData_3) data1.m_child1->m_child2 = {',
                'm_child2 = {',
                'm_child1 = Level 5',
                'm_child2 = Level 5',
                'm_child3 = Level 5',
                '}'])

        # Expand same expression, skipping only 1 layer of summaries
        self.expect(
            'frame variable data1.m_child1->m_child2 --no-summary-depth=1',
            substrs=[
                '(DeepData_3) data1.m_child1->m_child2 = {',
                'm_child1 = 0x',
                'Level 4',
                'm_child2 = Level 4',
                '}'])

        # Bad debugging info on SnowLeopard gcc (Apple Inc. build 5666).
        # Skip the following tests if the condition is met.
        if self.getCompiler().endswith('gcc') and not self.getCompiler().endswith('llvm-gcc'):
            import re
            gcc_version_output = system(
                [[lldbutil.which(self.getCompiler()), "-v"]])[1]
            #print("my output:", gcc_version_output)
            for line in gcc_version_output.split(os.linesep):
                m = re.search('\(Apple Inc\. build ([0-9]+)\)', line)
                #print("line:", line)
                if m:
                    gcc_build = int(m.group(1))
                    #print("gcc build:", gcc_build)
                    if gcc_build >= 5666:
                        # rdar://problem/9804600"
                        self.skipTest(
                            "rdar://problem/9804600 wrong namespace for std::string in debug info")

        # Expand same expression, skipping 3 layers of summaries
        self.expect(
            'frame variable data1.m_child1->m_child2 --show-types --no-summary-depth=3',
            substrs=[
                '(DeepData_3) data1.m_child1->m_child2 = {',
                'm_some_text = "Just a test"',
                'm_child2 = {',
                'm_some_text = "Just a test"'])

        # Change summary and expand, first without --no-summary-depth then with
        # --no-summary-depth
        self.runCmd(
            "type summary add --summary-string \"${var.m_some_text}\" DeepData_5")

        self.expect('fr var data2.m_child4.m_child2.m_child2', substrs=[
                    '(DeepData_5) data2.m_child4.m_child2.m_child2 = "Just a test"'])

        self.expect(
            'fr var data2.m_child4.m_child2.m_child2 --no-summary-depth',
            substrs=[
                '(DeepData_5) data2.m_child4.m_child2.m_child2 = {',
                'm_some_text = "Just a test"',
                '}'])
