"""
Test the 'memory read' command.
"""

from __future__ import print_function



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

class MemoryReadTestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

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

    def test_memory_read(self):
        """Test the 'memory read' command with plain and vector formats."""
        self.build()
        exe = os.path.join(os.getcwd(), "a.out")
        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)

        # Break in main() aftre the variables are assigned values.
        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'])

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

        # Test the memory read commands.

        # (lldb) memory read -f d -c 1 `&argc`
        # 0x7fff5fbff9a0: 1
        self.runCmd("memory read -f d -c 1 `&argc`")

        # Find the starting address for variable 'argc' to verify later that the
        # '--format uint32_t[] --size 4 --count 4' option increments the address
        # correctly.
        line = self.res.GetOutput().splitlines()[0]
        items = line.split(':')
        address = int(items[0], 0)
        argc = int(items[1], 0)
        self.assertTrue(address > 0 and argc == 1)

        # (lldb) memory read --format uint32_t[] --size 4 --count 4 `&argc`
        # 0x7fff5fbff9a0: {0x00000001}
        # 0x7fff5fbff9a4: {0x00000000}
        # 0x7fff5fbff9a8: {0x0ec0bf27}
        # 0x7fff5fbff9ac: {0x215db505}
        self.runCmd("memory read --format uint32_t[] --size 4 --count 4 `&argc`")
        lines = self.res.GetOutput().splitlines()
        for i in range(4):
            if i == 0:
                # Verify that the printout for argc is correct.
                self.assertTrue(argc == int(lines[i].split(':')[1].strip(' {}'), 0))
            addr = int(lines[i].split(':')[0], 0)
            # Verify that the printout for addr is incremented correctly.
            self.assertTrue(addr == (address + i*4))

        # (lldb) memory read --format char[] --size 7 --count 1 `&my_string`
        # 0x7fff5fbff990: {abcdefg}
        self.expect("memory read --format char[] --size 7 --count 1 `&my_string`",
            substrs = ['abcdefg'])

        # (lldb) memory read --format 'hex float' --size 16 `&argc`
        # 0x7fff5fbff5b0: error: unsupported byte size (16) for hex float format
        self.expect("memory read --format 'hex float' --size 16 `&argc`",
            substrs = ['unsupported byte size (16) for hex float format'])

        self.expect("memory read --format 'float' --count 1 --size 8 `&my_double`",
            substrs = ['1234.'])

        # (lldb) memory read --format 'float' --count 1 --size 20 `&my_double`
        # 0x7fff5fbff598: error: unsupported byte size (20) for float format
        self.expect("memory read --format 'float' --count 1 --size 20 `&my_double`",
            substrs = ['unsupported byte size (20) for float format'])

        self.expect('memory read --type int --count 5 `&my_ints[0]`',
            substrs=['(int) 0x', '2','4','6','8','10'])

        self.expect('memory read --type int --count 5 --format hex `&my_ints[0]`',
            substrs=['(int) 0x', '0x','0a'])

        self.expect('memory read --type int --count 5 --offset 5 `&my_ints[0]`',
            substrs=['(int) 0x', '12', '14','16','18', '20'])
