"""
Test lldb data formatter subsystem for bitset for libcxx and libstdcpp.
"""



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

USE_LIBSTDCPP = "USE_LIBSTDCPP"
USE_LIBCPP = "USE_LIBCPP"
VALUE = "VALUE"
REFERENCE = "REFERENCE"
POINTER = "POINTER"

class GenericBitsetDataFormatterTestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    def setUp(self):
        TestBase.setUp(self)
        primes = [1]*1000
        primes[0] = primes[1] = 0
        for i in range(2, len(primes)):
            for j in range(2*i, len(primes), i):
                primes[j] = 0
        self.primes = primes

    def getBitsetVariant(self, size, variant):
        if variant == VALUE:
            return "std::bitset<" + str(size) + ">"
        elif variant == REFERENCE:
            return "std::bitset<" + str(size) + "> &"
        elif variant == POINTER:
            return "std::bitset<" + str(size) + "> *"
        return ""

    def check(self, name, size, variant):
        var = self.frame().FindVariable(name)
        self.assertTrue(var.IsValid())
        self.assertEqual(var.GetNumChildren(), size)
        children = []
        for i in range(size):
            child = var.GetChildAtIndex(i)
            children.append(ValueCheck(value=str(bool(child.GetValueAsUnsigned())).lower()))
            self.assertEqual(child.GetValueAsUnsigned(), self.primes[i],
                    "variable: %s, index: %d"%(name, size))
        self.expect_var_path(name,type=self.getBitsetVariant(size,variant),children=children)

    def do_test_value(self, stdlib_type):
        """Test that std::bitset is displayed correctly"""
        self.build(dictionary={stdlib_type: "1"})

        lldbutil.run_to_source_breakpoint(self, '// break here',
                lldb.SBFileSpec("main.cpp", False))

        self.check("empty", 0, VALUE)
        self.check("small", 13, VALUE)
        self.check("medium", 70, VALUE)
        self.check("large", 1000, VALUE)

    @add_test_categories(["libstdcxx"])
    def test_value_libstdcpp(self):
        self.do_test_value(USE_LIBSTDCPP)

    @add_test_categories(["libc++"])
    def test_value_libcpp(self):
        self.do_test_value(USE_LIBCPP)

    def do_test_ptr_and_ref(self, stdlib_type):
        """Test that ref and ptr to std::bitset is displayed correctly"""
        self.build(dictionary={stdlib_type: "1"})

        (_, process, _, bkpt) = lldbutil.run_to_source_breakpoint(self,
                'Check ref and ptr',
                lldb.SBFileSpec("main.cpp", False))

        self.check("ref", 13, REFERENCE)
        self.check("ptr", 13, POINTER)

        lldbutil.continue_to_breakpoint(process, bkpt)

        self.check("ref", 70, REFERENCE)
        self.check("ptr", 70, POINTER)

        lldbutil.continue_to_breakpoint(process, bkpt)

        self.check("ref", 1000, REFERENCE)
        self.check("ptr", 1000, POINTER)

    @add_test_categories(["libstdcxx"])
    def test_ptr_and_ref_libstdcpp(self):
        self.do_test_ptr_and_ref(USE_LIBSTDCPP)

    @add_test_categories(["libc++"])
    def test_ptr_and_ref_libcpp(self):
        self.do_test_ptr_and_ref(USE_LIBCPP)
