xref: /llvm-project-15.0.7/lldb/test/API/python_api/formatters/TestFormattersSBAPI.py (revision 4cc8f2a0)

"""Test Python APIs for working with formatters"""

from __future__ import print_function


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


class SBFormattersAPITestCase(TestBase):
    NO_DEBUG_INFO_TESTCASE = True

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

    def test_formatters_api(self):
        """Test Python APIs for working with formatters"""
        self.build()
        self.setTearDownCleanup()

        """Test Python APIs for working with formatters"""
        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'])

        # 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)
            self.runCmd('type filter clear', check=False)
            self.runCmd('type synthetic clear', check=False)
            self.runCmd('type category delete foobar', check=False)
            self.runCmd('type category delete JASSynth', check=False)
            self.runCmd('type category delete newbar', check=False)

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

        format = lldb.SBTypeFormat(lldb.eFormatHex)
        category = self.dbg.GetDefaultCategory()
        category.AddTypeFormat(lldb.SBTypeNameSpecifier("int"), format)

        self.expect("frame variable foo.A",
                    substrs=['0x00000001'])
        self.expect("frame variable foo.E", matching=False,
                    substrs=['b8cca70a'])

        category.AddTypeFormat(lldb.SBTypeNameSpecifier("long"), format)
        self.expect("frame variable foo.A",
                    substrs=['0x00000001'])
        self.expect("frame variable foo.E",
                    substrs=['b8cca70a'])

        format.SetFormat(lldb.eFormatOctal)
        category.AddTypeFormat(lldb.SBTypeNameSpecifier("int"), format)
        self.expect("frame variable foo.A",
                    substrs=[' 01'])
        self.expect("frame variable foo.E",
                    substrs=['b8cca70a'])

        category.DeleteTypeFormat(lldb.SBTypeNameSpecifier("int"))
        category.DeleteTypeFormat(lldb.SBTypeNameSpecifier("long"))
        self.expect("frame variable foo.A", matching=False,
                    substrs=[' 01'])
        self.expect("frame variable foo.E", matching=False,
                    substrs=['b8cca70a'])

        summary = lldb.SBTypeSummary.CreateWithSummaryString(
            "the hello world you'll never see")
        summary.SetSummaryString('hello world')
        new_category = self.dbg.GetCategory("foobar")
        self.assertFalse(
            new_category.IsValid(),
            "getting a non-existing category worked")
        new_category = self.dbg.CreateCategory("foobar")
        new_category.SetEnabled(True)
        new_category.AddTypeSummary(
            lldb.SBTypeNameSpecifier(
                "^.*t$",
                True,  # is_regexp
            ), summary)

        self.expect("frame variable foo.A",
                    substrs=['hello world'])
        self.expect("frame variable foo.E", matching=False,
                    substrs=['hello world'])
        self.expect("frame variable foo.B",
                    substrs=['hello world'])
        self.expect("frame variable foo.F",
                    substrs=['hello world'])
        new_category.SetEnabled(False)
        self.expect("frame variable foo.A", matching=False,
                    substrs=['hello world'])
        self.expect("frame variable foo.E", matching=False,
                    substrs=['hello world'])
        self.expect("frame variable foo.B", matching=False,
                    substrs=['hello world'])
        self.expect("frame variable foo.F", matching=False,
                    substrs=['hello world'])
        self.dbg.DeleteCategory(new_category.GetName())
        self.expect("frame variable foo.A", matching=False,
                    substrs=['hello world'])
        self.expect("frame variable foo.E", matching=False,
                    substrs=['hello world'])
        self.expect("frame variable foo.B", matching=False,
                    substrs=['hello world'])
        self.expect("frame variable foo.F", matching=False,
                    substrs=['hello world'])

        filter = lldb.SBTypeFilter(0)
        filter.AppendExpressionPath("A")
        filter.AppendExpressionPath("D")
        self.assertEqual(
            filter.GetNumberOfExpressionPaths(), 2,
            "filter with two items does not have two items")

        category.AddTypeFilter(lldb.SBTypeNameSpecifier("JustAStruct"), filter)
        self.expect("frame variable foo",
                    substrs=['A = 1', 'D = 6.28'])
        self.expect("frame variable foo", matching=False,
                    substrs=['B = ', 'C = ', 'E = ', 'F = '])

        category.DeleteTypeFilter(
            lldb.SBTypeNameSpecifier(
                "JustAStruct", True))
        self.expect("frame variable foo",
                    substrs=['A = 1', 'D = 6.28'])
        self.expect("frame variable foo", matching=False,
                    substrs=['B = ', 'C = ', 'E = ', 'F = '])

        category.DeleteTypeFilter(
            lldb.SBTypeNameSpecifier(
                "JustAStruct", False))
        self.expect("frame variable foo",
                    substrs=['A = 1', 'D = 6.28'])
        self.expect("frame variable foo", matching=True,
                    substrs=['B = ', 'C = ', 'E = ', 'F = '])

        self.runCmd("command script import --allow-reload ./synth.py")

        self.expect("frame variable foo", matching=False,
                    substrs=['X = 1'])

        self.dbg.GetCategory("JASSynth").SetEnabled(True)
        self.expect("frame variable foo", matching=True,
                    substrs=['X = 1'])

        self.dbg.GetCategory("CCCSynth").SetEnabled(True)
        self.expect(
            "frame variable ccc",
            matching=True,
            substrs=[
                'CCC object with leading value (int) a = 111',
                'a = 111',
                'b = 222',
                'c = 333'])

        foo_var = self.dbg.GetSelectedTarget().GetProcess(
        ).GetSelectedThread().GetSelectedFrame().FindVariable('foo')
        self.assertTrue(foo_var.IsValid(), 'could not find foo')
        self.assertTrue(
            foo_var.GetDeclaration().IsValid(),
            'foo declaration is invalid')

        self.assertEqual(
            foo_var.GetNumChildren(), 2,
            'synthetic value has wrong number of child items (synth)')
        self.assertEqual(
            foo_var.GetChildMemberWithName('X').GetValueAsUnsigned(), 1,
            'foo_synth.X has wrong value (synth)')
        self.assertFalse(
            foo_var.GetChildMemberWithName('B').IsValid(),
            'foo_synth.B is valid but should not (synth)')

        self.dbg.GetCategory("JASSynth").SetEnabled(False)
        foo_var = self.dbg.GetSelectedTarget().GetProcess(
        ).GetSelectedThread().GetSelectedFrame().FindVariable('foo')
        self.assertTrue(foo_var.IsValid(), 'could not find foo')

        self.assertFalse(
            foo_var.GetNumChildren() == 2,
            'still seeing synthetic value')

        filter = lldb.SBTypeFilter(0)
        filter.AppendExpressionPath("A")
        filter.AppendExpressionPath("D")
        category.AddTypeFilter(lldb.SBTypeNameSpecifier("JustAStruct"), filter)
        self.expect("frame variable foo",
                    substrs=['A = 1', 'D = 6.28'])

        foo_var = self.dbg.GetSelectedTarget().GetProcess(
        ).GetSelectedThread().GetSelectedFrame().FindVariable('foo')
        self.assertTrue(foo_var.IsValid(), 'could not find foo')

        self.assertEqual(
            foo_var.GetNumChildren(), 2,
            'synthetic value has wrong number of child items (filter)')
        self.assertEqual(
            foo_var.GetChildMemberWithName('X').GetValueAsUnsigned(), 0,
            'foo_synth.X has wrong value (filter)')
        self.assertEqual(
            foo_var.GetChildMemberWithName('A').GetValueAsUnsigned(), 1,
            'foo_synth.A has wrong value (filter)')

        self.assertTrue(filter.ReplaceExpressionPathAtIndex(
            0, "C"), "failed to replace an expression path in filter")
        self.expect("frame variable foo",
                    substrs=['A = 1', 'D = 6.28'])
        category.AddTypeFilter(lldb.SBTypeNameSpecifier("JustAStruct"), filter)
        self.expect("frame variable foo",
                    substrs=["C = 'e'", 'D = 6.28'])
        category.AddTypeFilter(lldb.SBTypeNameSpecifier("FooType"), filter)
        filter.ReplaceExpressionPathAtIndex(1, "F")
        self.expect("frame variable foo",
                    substrs=["C = 'e'", 'D = 6.28'])
        category.AddTypeFilter(lldb.SBTypeNameSpecifier("JustAStruct"), filter)
        self.expect("frame variable foo",
                    substrs=["C = 'e'", 'F = 0'])
        self.expect("frame variable bar",
                    substrs=["C = 'e'", 'D = 6.28'])

        foo_var = self.dbg.GetSelectedTarget().GetProcess(
        ).GetSelectedThread().GetSelectedFrame().FindVariable('foo')
        self.assertTrue(foo_var.IsValid(), 'could not find foo')
        self.assertEqual(
            foo_var.GetChildMemberWithName('C').GetValueAsUnsigned(), ord('e'),
            'foo_synth.C has wrong value (filter)')

        chosen = self.dbg.GetFilterForType(
            lldb.SBTypeNameSpecifier("JustAStruct"))
        self.assertEqual(
            chosen.count, 2,
            "wrong filter found for JustAStruct")
        self.assertEqual(
            chosen.GetExpressionPathAtIndex(0), 'C',
            "wrong item at index 0 for JustAStruct")
        self.assertEqual(
            chosen.GetExpressionPathAtIndex(1), 'F',
            "wrong item at index 1 for JustAStruct")

        self.assertFalse(
            category.DeleteTypeFilter(
                lldb.SBTypeNameSpecifier("NoSuchType")),
            "deleting a non-existing filter worked")
        self.assertFalse(
            category.DeleteTypeSummary(
                lldb.SBTypeNameSpecifier("NoSuchType")),
            "deleting a non-existing summary worked")
        self.assertFalse(
            category.DeleteTypeFormat(
                lldb.SBTypeNameSpecifier("NoSuchType")),
            "deleting a non-existing format worked")
        self.assertFalse(
            category.DeleteTypeSynthetic(
                lldb.SBTypeNameSpecifier("NoSuchType")),
            "deleting a non-existing synthetic worked")

        self.assertFalse(
            category.DeleteTypeFilter(
                lldb.SBTypeNameSpecifier("")),
            "deleting a filter for '' worked")
        self.assertFalse(
            category.DeleteTypeSummary(
                lldb.SBTypeNameSpecifier("")),
            "deleting a summary for '' worked")
        self.assertFalse(
            category.DeleteTypeFormat(
                lldb.SBTypeNameSpecifier("")),
            "deleting a format for '' worked")
        self.assertFalse(
            category.DeleteTypeSynthetic(
                lldb.SBTypeNameSpecifier("")),
            "deleting a synthetic for '' worked")

        try:
            self.assertFalse(
                category.AddTypeSummary(
                    lldb.SBTypeNameSpecifier("NoneSuchType"),
                    None),
                "adding a summary valued None worked")
        except:
            pass
        else:
            self.assertFalse(True, "adding a summary valued None worked")

        try:
            self.assertFalse(
                category.AddTypeFilter(
                    lldb.SBTypeNameSpecifier("NoneSuchType"),
                    None),
                "adding a filter valued None worked")
        except:
            pass
        else:
            self.assertFalse(True, "adding a filter valued None worked")

        try:
            self.assertFalse(
                category.AddTypeSynthetic(
                    lldb.SBTypeNameSpecifier("NoneSuchType"),
                    None),
                "adding a synthetic valued None worked")
        except:
            pass
        else:
            self.assertFalse(True, "adding a synthetic valued None worked")

        try:
            self.assertFalse(
                category.AddTypeFormat(
                    lldb.SBTypeNameSpecifier("NoneSuchType"),
                    None),
                "adding a format valued None worked")
        except:
            pass
        else:
            self.assertFalse(True, "adding a format valued None worked")

        self.assertFalse(
            category.AddTypeSummary(
                lldb.SBTypeNameSpecifier("EmptySuchType"),
                lldb.SBTypeSummary()),
            "adding a summary without value worked")
        self.assertFalse(
            category.AddTypeFilter(
                lldb.SBTypeNameSpecifier("EmptySuchType"),
                lldb.SBTypeFilter()),
            "adding a filter without value worked")
        self.assertFalse(
            category.AddTypeSynthetic(
                lldb.SBTypeNameSpecifier("EmptySuchType"),
                lldb.SBTypeSynthetic()),
            "adding a synthetic without value worked")
        self.assertFalse(
            category.AddTypeFormat(
                lldb.SBTypeNameSpecifier("EmptySuchType"),
                lldb.SBTypeFormat()),
            "adding a format without value worked")

        self.assertFalse(
            category.AddTypeSummary(
                lldb.SBTypeNameSpecifier(""),
                lldb.SBTypeSummary.CreateWithSummaryString("")),
            "adding a summary for an invalid type worked")
        self.assertFalse(
            category.AddTypeFilter(
                lldb.SBTypeNameSpecifier(""),
                lldb.SBTypeFilter(0)),
            "adding a filter for an invalid type worked")
        self.assertFalse(
            category.AddTypeSynthetic(
                lldb.SBTypeNameSpecifier(""),
                lldb.SBTypeSynthetic.CreateWithClassName("")),
            "adding a synthetic for an invalid type worked")
        self.assertFalse(
            category.AddTypeFormat(
                lldb.SBTypeNameSpecifier(""),
                lldb.SBTypeFormat(
                    lldb.eFormatHex)),
            "adding a format for an invalid type worked")

        new_category = self.dbg.CreateCategory("newbar")
        new_category.AddTypeSummary(
            lldb.SBTypeNameSpecifier("JustAStruct"),
            lldb.SBTypeSummary.CreateWithScriptCode("return 'hello scripted world';"))
        self.expect("frame variable foo", matching=False,
                    substrs=['hello scripted world'])
        new_category.SetEnabled(True)
        self.expect("frame variable foo", matching=True,
                    substrs=['hello scripted world'])

        self.expect("frame variable foo_ptr", matching=True,
                    substrs=['hello scripted world'])
        new_category.AddTypeSummary(
            lldb.SBTypeNameSpecifier("JustAStruct"),
            lldb.SBTypeSummary.CreateWithScriptCode(
                "return 'hello scripted world';",
                lldb.eTypeOptionSkipPointers))
        self.expect("frame variable foo", matching=True,
                    substrs=['hello scripted world'])

        frame = self.dbg.GetSelectedTarget().GetProcess(
        ).GetSelectedThread().GetSelectedFrame()
        foo_ptr = frame.FindVariable("foo_ptr")
        summary = foo_ptr.GetTypeSummary()

        self.assertFalse(
            summary.IsValid(),
            "summary found for foo* when none was planned")

        self.expect("frame variable foo_ptr", matching=False,
                    substrs=['hello scripted world'])

        new_category.AddTypeSummary(
            lldb.SBTypeNameSpecifier("JustAStruct"),
            lldb.SBTypeSummary.CreateWithSummaryString(
                "hello static world",
                lldb.eTypeOptionNone))

        summary = foo_ptr.GetTypeSummary()

        self.assertTrue(
            summary.IsValid(),
            "no summary found for foo* when one was in place")
        self.assertEqual(
            summary.GetData(), "hello static world",
            "wrong summary found for foo*")

        self.expect("frame variable e1", substrs=["I am an empty Empty1 {}"])
        self.expect("frame variable e2", substrs=["I am an empty Empty2"])
        self.expect(
            "frame variable e2",
            substrs=["I am an empty Empty2 {}"],
            matching=False)

        self.assertTrue(
            self.dbg.GetCategory(
                lldb.eLanguageTypeObjC) is not None,
            "ObjC category is None")

    def test_force_synth_off(self):
        """Test that one can have the public API return non-synthetic SBValues if desired"""
        self.build(dictionary={'EXE': 'no_synth'})
        self.setTearDownCleanup()

        self.runCmd("file " + self.getBuildArtifact("no_synth"),
                    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'])

        # 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)
            self.runCmd('type filter clear', check=False)
            self.runCmd('type synthetic clear', check=False)
            self.runCmd('type category delete foobar', check=False)
            self.runCmd('type category delete JASSynth', check=False)
            self.runCmd('type category delete newbar', check=False)
            self.runCmd('settings set target.enable-synthetic-value true')

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

        frame = self.dbg.GetSelectedTarget().GetProcess(
        ).GetSelectedThread().GetSelectedFrame()
        int_vector = frame.FindVariable("int_vector")
        if self.TraceOn():
            print(int_vector)
        self.assertEqual(
            int_vector.GetNumChildren(), 0,
            'synthetic vector is empty')

        self.runCmd('settings set target.enable-synthetic-value false')
        frame = self.dbg.GetSelectedTarget().GetProcess(
        ).GetSelectedThread().GetSelectedFrame()
        int_vector = frame.FindVariable("int_vector")
        if self.TraceOn():
            print(int_vector)
        self.assertFalse(
            int_vector.GetNumChildren() == 0,
            '"physical" vector is not empty')

        self.runCmd('settings set target.enable-synthetic-value true')
        frame = self.dbg.GetSelectedTarget().GetProcess(
        ).GetSelectedThread().GetSelectedFrame()
        int_vector = frame.FindVariable("int_vector")
        if self.TraceOn():
            print(int_vector)
        self.assertEqual(
            int_vector.GetNumChildren(), 0,
            'synthetic vector is still empty')