xref: /llvm-project-15.0.7/lldb/test/API/functionalities/data-formatter/data-formatter-cpp/TestDataFormatterCpp.py (revision 4cc8f2a0)

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



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


class CppDataFormatterTestCase(TestBase):

    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 test_with_run_command(self):
        """Test that that file and class static variables display correctly."""
        self.build()
        self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)

        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'])

        self.expect("frame variable",
                    substrs=['(Speed) SPILookHex = 5.55'  # Speed by default is 5.55.
                             ])

        # 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)

        self.runCmd("type format add -C yes -f x Speed BitField")
        self.runCmd("type format add -C no -f c RealNumber")
        self.runCmd("type format add -C no -f x Type2")
        self.runCmd("type format add -C yes -f c Type1")

        # The type format list should show our custom formats.
        self.expect(
            "type format list",
            substrs=['Speed', 'BitField', 'RealNumber', 'Type2', 'Type1'])

        self.expect("frame variable",
                    patterns=['\(Speed\) SPILookHex = 0x[0-9a-f]+'  # Speed should look hex-ish now.
                              ])

        # gcc4.2 on Mac OS X skips typedef chains in the DWARF output
        if self.getCompiler() in ['clang', 'llvm-gcc']:
            self.expect("frame variable",
                        patterns=['\(SignalMask\) SMILookHex = 0x[0-9a-f]+'  # SignalMask should look hex-ish now.
                                  ])
            self.expect("frame variable", matching=False,
                        patterns=['\(Type4\) T4ILookChar = 0x[0-9a-f]+'  # Type4 should NOT look hex-ish now.
                                  ])

        # Now let's delete the 'Speed' custom format.
        self.runCmd("type format delete Speed")

        # The type format list should not show 'Speed' at this point.
        self.expect("type format list", matching=False,
                    substrs=['Speed'])

        # Delete type format for 'Speed', we should expect an error message.
        self.expect("type format delete Speed", error=True,
                    substrs=['no custom formatter for Speed'])

        self.runCmd(
            "type summary add --summary-string \"arr = ${var%s}\" -x \"char\\[[0-9]+\\]\" -v")

        self.expect("frame variable strarr",
                    substrs=['arr = "Hello world!"'])

        self.runCmd("type summary clear")

        self.runCmd(
            "type summary add --summary-string \"ptr = ${var%s}\" \"char *\" -v")

        self.expect("frame variable strptr",
                    substrs=['ptr = "Hello world!"'])

        self.runCmd(
            "type summary add --summary-string \"arr = ${var%s}\" -x \"char\\[[0-9]+\\]\" -v")

        self.expect("frame variable strarr",
                    substrs=['arr = "Hello world!'])

        # check that rdar://problem/10011145 (Standard summary format for
        # char[] doesn't work as the result of "expr".) is solved
        self.expect("p strarr",
                    substrs=['arr = "Hello world!'])

        self.expect("frame variable strptr",
                    substrs=['ptr = "Hello world!"'])

        self.expect("p strptr",
                    substrs=['ptr = "Hello world!"'])

        self.expect(
            "p (char*)\"1234567890123456789012345678901234567890123456789012345678901234ABC\"",
            substrs=[
                '(char *) $',
                ' = ptr = ',
                ' "1234567890123456789012345678901234567890123456789012345678901234ABC"'])

        self.runCmd("type summary add -c TestPoint")

        self.expect("frame variable iAmSomewhere",
                    substrs=['x = 4',
                             'y = 6'])

        self.expect("type summary list",
                    substrs=['TestPoint',
                             'one-line'])

        self.runCmd("type summary add --summary-string \"y=${var.y%x}\" TestPoint")

        self.expect("frame variable iAmSomewhere",
                    substrs=['y=0x'])

        self.runCmd(
            "type summary add --summary-string \"y=${var.y},x=${var.x}\" TestPoint")

        self.expect("frame variable iAmSomewhere",
                    substrs=['y=6',
                             'x=4'])

        self.runCmd("type summary add --summary-string \"hello\" TestPoint -e")

        self.expect("type summary list",
                    substrs=['TestPoint',
                             'show children'])

        self.expect("frame variable iAmSomewhere",
                    substrs=['hello',
                             'x = 4',
                             '}'])

        self.runCmd(
            "type summary add --summary-string \"Sign: ${var[31]%B} Exponent: ${var[23-30]%x} Mantissa: ${var[0-22]%u}\" ShowMyGuts")

        self.expect("frame variable cool_pointer->floating",
                    substrs=['Sign: true',
                             'Exponent: 0x',
                             '80'])

        self.runCmd("type summary add --summary-string \"a test\" i_am_cool")

        self.expect("frame variable cool_pointer",
                    substrs=['a test'])

        self.runCmd(
            "type summary add --summary-string \"a test\" i_am_cool --skip-pointers")

        self.expect("frame variable cool_pointer",
                    substrs=['a test'],
                    matching=False)

        self.runCmd(
            "type summary add --summary-string \"${var[1-3]}\" \"int[5]\"")

        self.expect("frame variable int_array",
                    substrs=['2',
                             '3',
                             '4'])

        self.runCmd("type summary clear")

        self.runCmd(
            "type summary add --summary-string \"${var[0-2].integer}\" \"i_am_cool *\"")
        self.runCmd(
            "type summary add --summary-string \"${var[2-4].integer}\" \"i_am_cool[5]\"")

        self.expect("frame variable cool_array",
                    substrs=['1,1,6'])

        self.expect("frame variable cool_pointer",
                    substrs=['3,0,0'])

        # test special symbols for formatting variables into summaries
        self.runCmd(
            "type summary add --summary-string \"cool object @ ${var%L}\" i_am_cool")
        self.runCmd("type summary delete \"i_am_cool[5]\"")

        # this test might fail if the compiler tries to store
        # these values into registers.. hopefully this is not
        # going to be the case
        self.expect("frame variable cool_array",
                    substrs=['[0] = cool object @ 0x',
                             '[1] = cool object @ 0x',
                             '[2] = cool object @ 0x',
                             '[3] = cool object @ 0x',
                             '[4] = cool object @ 0x'])

        # test getting similar output by exploiting ${var} = 'type @ location'
        # for aggregates
        self.runCmd("type summary add --summary-string \"${var}\" i_am_cool")

        # this test might fail if the compiler tries to store
        # these values into registers.. hopefully this is not
        # going to be the case
        self.expect("frame variable cool_array",
                    substrs=['[0] = i_am_cool @ 0x',
                             '[1] = i_am_cool @ 0x',
                             '[2] = i_am_cool @ 0x',
                             '[3] = i_am_cool @ 0x',
                             '[4] = i_am_cool @ 0x'])

        # test getting same output by exploiting %T and %L together for
        # aggregates
        self.runCmd(
            "type summary add --summary-string \"${var%T} @ ${var%L}\" i_am_cool")

        # this test might fail if the compiler tries to store
        # these values into registers.. hopefully this is not
        # going to be the case
        self.expect("frame variable cool_array",
                    substrs=['[0] = i_am_cool @ 0x',
                             '[1] = i_am_cool @ 0x',
                             '[2] = i_am_cool @ 0x',
                             '[3] = i_am_cool @ 0x',
                             '[4] = i_am_cool @ 0x'])

        self.runCmd("type summary add --summary-string \"goofy\" i_am_cool")
        self.runCmd(
            "type summary add --summary-string \"${var.second_cool%S}\" i_am_cooler")

        self.expect("frame variable the_coolest_guy",
                    substrs=['(i_am_cooler) the_coolest_guy = goofy'])

        # check that unwanted type specifiers are removed
        self.runCmd("type summary delete i_am_cool")
        self.runCmd(
            "type summary add --summary-string \"goofy\" \"class i_am_cool\"")
        self.expect("frame variable the_coolest_guy",
                    substrs=['(i_am_cooler) the_coolest_guy = goofy'])

        self.runCmd("type summary delete i_am_cool")
        self.runCmd(
            "type summary add --summary-string \"goofy\" \"enum i_am_cool\"")
        self.expect("frame variable the_coolest_guy",
                    substrs=['(i_am_cooler) the_coolest_guy = goofy'])

        self.runCmd("type summary delete i_am_cool")
        self.runCmd(
            "type summary add --summary-string \"goofy\" \"struct i_am_cool\"")
        self.expect("frame variable the_coolest_guy",
                    substrs=['(i_am_cooler) the_coolest_guy = goofy'])

        # many spaces, but we still do the right thing
        self.runCmd("type summary delete i_am_cool")
        self.runCmd(
            "type summary add --summary-string \"goofy\" \"union     i_am_cool\"")
        self.expect("frame variable the_coolest_guy",
                    substrs=['(i_am_cooler) the_coolest_guy = goofy'])

        # but that not *every* specifier is removed
        self.runCmd("type summary delete i_am_cool")
        self.runCmd(
            "type summary add --summary-string \"goofy\" \"wrong i_am_cool\"")
        self.expect("frame variable the_coolest_guy", matching=False,
                    substrs=['(i_am_cooler) the_coolest_guy = goofy'])

        # check that formats are not sticking since that is the behavior we
        # want
        self.expect("frame variable iAmInt --format hex",
                    substrs=['(int) iAmInt = 0x00000001'])
        self.expect(
            "frame variable iAmInt",
            matching=False,
            substrs=['(int) iAmInt = 0x00000001'])
        self.expect("frame variable iAmInt", substrs=['(int) iAmInt = 1'])