"""Test settings and readings of program variables."""

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 SetValuesTestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    def setUp(self):
        # Call super's setUp().
        TestBase.setUp(self)
        # Find the line numbers to break inside main().
        self.line1 = line_number('main.c', '// Set break point #1.')
        self.line2 = line_number('main.c', '// Set break point #2.')
        self.line3 = line_number('main.c', '// Set break point #3.')
        self.line4 = line_number('main.c', '// Set break point #4.')
        self.line5 = line_number('main.c', '// Set break point #5.')

    def test(self):
        """Test settings and readings of program variables."""
        self.build()
        exe = self.getBuildArtifact("a.out")
        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)

        # Set breakpoints on several places to set program variables.
        lldbutil.run_break_set_by_file_and_line(
            self, "main.c", self.line1, num_expected_locations=1, loc_exact=True)

        lldbutil.run_break_set_by_file_and_line(
            self, "main.c", self.line2, num_expected_locations=1, loc_exact=True)

        lldbutil.run_break_set_by_file_and_line(
            self, "main.c", self.line3, num_expected_locations=1, loc_exact=True)

        lldbutil.run_break_set_by_file_and_line(
            self, "main.c", self.line4, num_expected_locations=1, loc_exact=True)

        lldbutil.run_break_set_by_file_and_line(
            self, "main.c", self.line5, 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'])

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

        # main.c:15
        # Check that 'frame variable --show-types' displays the correct data
        # type and value.
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            startstr="(char) i = 'a'")

        # Now set variable 'i' and check that it is correctly displayed.
        self.runCmd("expression i = 'b'")
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            startstr="(char) i = 'b'")

        self.runCmd("continue")

        # main.c:36
        # Check that 'frame variable --show-types' displays the correct data
        # type and value.
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            patterns=["\((short unsigned int|unsigned short)\) i = 33"])

        # Now set variable 'i' and check that it is correctly displayed.
        self.runCmd("expression i = 333")
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            patterns=["\((short unsigned int|unsigned short)\) i = 333"])

        self.runCmd("continue")

        # main.c:57
        # Check that 'frame variable --show-types' displays the correct data
        # type and value.
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            startstr="(long) i = 33")

        # Now set variable 'i' and check that it is correctly displayed.
        self.runCmd("expression i = 33333")
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            startstr="(long) i = 33333")

        self.runCmd("continue")

        # main.c:78
        # Check that 'frame variable --show-types' displays the correct data
        # type and value.
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            startstr="(double) i = 2.25")

        # Now set variable 'i' and check that it is correctly displayed.
        self.runCmd("expression i = 1.5")
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            startstr="(double) i = 1.5")

        self.runCmd("continue")

        # main.c:85
        # Check that 'frame variable --show-types' displays the correct data
        # type and value.
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            startstr="(long double) i = 2.25")

        # Now set variable 'i' and check that it is correctly displayed.
        self.runCmd("expression i = 1.5")
        self.expect(
            "frame variable --show-types",
            VARIABLES_DISPLAYED_CORRECTLY,
            startstr="(long double) i = 1.5")