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


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


class LibcxxVectorDataFormatterTestCase(TestBase):
    def check_numbers(self, var_name):
        self.expect(
            "frame variable " + var_name,
            substrs=[
                var_name + " = size=7",
                "[0] = 1",
                "[1] = 12",
                "[2] = 123",
                "[3] = 1234",
                "[4] = 12345",
                "[5] = 123456",
                "[6] = 1234567",
                "}",
            ],
        )

        self.expect_expr(
            var_name,
            result_summary="size=7",
            result_children=[
                ValueCheck(value="1"),
                ValueCheck(value="12"),
                ValueCheck(value="123"),
                ValueCheck(value="1234"),
                ValueCheck(value="12345"),
                ValueCheck(value="123456"),
                ValueCheck(value="1234567"),
            ],
        )

        # check access-by-index
        self.expect("frame variable " + var_name + "[0]", substrs=["1"])
        self.expect("frame variable " + var_name + "[1]", substrs=["12"])
        self.expect("frame variable " + var_name + "[2]", substrs=["123"])
        self.expect("frame variable " + var_name + "[3]", substrs=["1234"])

    @add_test_categories(["libc++"])
    def test_with_run_command(self):
        """Test that that file and class static variables display correctly."""
        self.build()
        (self.target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
            self, "break here", lldb.SBFileSpec("main.cpp", False)
        )

        # 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 synth clear", check=False)
            self.runCmd("settings set target.max-children-count 256", check=False)

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

        # empty vectors (and storage pointers SHOULD BOTH BE NULL..)
        self.expect("frame variable numbers", substrs=["numbers = size=0"])

        lldbutil.continue_to_breakpoint(process, bkpt)

        # first value added
        self.expect(
            "frame variable numbers", substrs=["numbers = size=1", "[0] = 1", "}"]
        )

        # add some more data
        lldbutil.continue_to_breakpoint(process, bkpt)

        self.expect(
            "frame variable numbers",
            substrs=[
                "numbers = size=4",
                "[0] = 1",
                "[1] = 12",
                "[2] = 123",
                "[3] = 1234",
                "}",
            ],
        )

        self.expect(
            "expression numbers",
            substrs=[
                "$",
                "size=4",
                "[0] = 1",
                "[1] = 12",
                "[2] = 123",
                "[3] = 1234",
                "}",
            ],
        )

        # check access to synthetic children
        self.runCmd(
            'type summary add --summary-string "item 0 is ${var[0]}" std::int_vect int_vect'
        )
        self.expect("frame variable numbers", substrs=["item 0 is 1"])

        self.runCmd(
            'type summary add --summary-string "item 0 is ${svar[0]}" std::int_vect int_vect'
        )
        self.expect("frame variable numbers", substrs=["item 0 is 1"])
        # move on with synths
        self.runCmd("type summary delete std::int_vect")
        self.runCmd("type summary delete int_vect")

        # add some more data
        lldbutil.continue_to_breakpoint(process, bkpt)

        self.check_numbers("numbers")

        # clear out the vector and see that we do the right thing once again
        lldbutil.continue_to_breakpoint(process, bkpt)

        self.expect("frame variable numbers", substrs=["numbers = size=0"])

        lldbutil.continue_to_breakpoint(process, bkpt)

        # first value added
        self.expect(
            "frame variable numbers", substrs=["numbers = size=1", "[0] = 7", "}"]
        )

        # check if we can display strings
        self.expect("frame variable strings", substrs=["goofy", "is", "smart"])

        self.expect("expression strings", substrs=["goofy", "is", "smart"])

        # test summaries based on synthetic children
        self.runCmd(
            'type summary add std::string_vect string_vect --summary-string "vector has ${svar%#} items" -e'
        )
        self.expect(
            "frame variable strings",
            substrs=["vector has 3 items", "goofy", "is", "smart"],
        )

        self.expect(
            "expression strings", substrs=["vector has 3 items", "goofy", "is", "smart"]
        )

        lldbutil.continue_to_breakpoint(process, bkpt)

        self.expect("frame variable strings", substrs=["vector has 4 items"])

        # check access-by-index
        self.expect("frame variable strings[0]", substrs=["goofy"])
        self.expect("frame variable strings[1]", substrs=["is"])

        lldbutil.continue_to_breakpoint(process, bkpt)

        self.expect("frame variable strings", substrs=["vector has 0 items"])

    @add_test_categories(["libc++"])
    def test_ref_and_ptr(self):
        """Test that that file and class static variables display correctly."""
        self.build()
        (self.target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
            self, "Stop here to check by ref", lldb.SBFileSpec("main.cpp", False)
        )

        # The reference should display the same was as the value did
        self.check_numbers("ref")

        # The pointer should just show the right number of elements:

        self.expect("frame variable ptr", substrs=["ptr =", " size=7"])

        self.expect("expression ptr", substrs=["$", "size=7"])
