"""
Test basic std::vector functionality.
"""

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


class TestBasicVector(TestBase):
    @add_test_categories(["libc++"])
    @skipIf(compiler=no_match("clang"))
    @skipIf(bugnumber="rdar://100741983")
    def test(self):
        self.build()

        lldbutil.run_to_source_breakpoint(
            self, "// Set break point at this line.", lldb.SBFileSpec("main.cpp")
        )

        self.runCmd("settings set target.import-std-module true")

        vector_type = "std::vector<int>"
        size_type = "size_type"
        value_type = "value_type"
        iterator = "iterator"
        # LLDB's formatter provides us with a artificial 'item' member.
        iterator_children = [ValueCheck(name="item")]
        riterator = "reverse_iterator"
        riterator_children = [
            ValueCheck(),  # Deprecated __t_ member; no need to check
            ValueCheck(name="current"),
        ]

        self.expect_expr(
            "a",
            result_type=vector_type,
            result_children=[
                ValueCheck(value="3"),
                ValueCheck(value="1"),
                ValueCheck(value="2"),
            ],
        )
        self.expect_expr("a.size()", result_type=size_type, result_value="3")
        front = self.expect_expr("a.front()", result_type=value_type, result_value="3")
        self.expect_expr("a[1]", result_type=value_type, result_value="1")
        self.expect_expr("a.back()", result_type=value_type, result_value="2")

        self.expect("expr std::sort(a.begin(), a.end())")
        self.expect_expr("a.front()", result_type=value_type, result_value="1")
        self.expect_expr("a[1]", result_type=value_type, result_value="2")
        self.expect_expr("a.back()", result_type=value_type, result_value="3")

        self.expect("expr std::reverse(a.begin(), a.end())")
        self.expect_expr("a.front()", result_type=value_type, result_value="3")
        self.expect_expr("a[1]", result_type=value_type, result_value="2")
        self.expect_expr("a.back()", result_type=value_type, result_value="1")

        self.expect_expr(
            "a.begin()", result_type=iterator, result_children=iterator_children
        )
        self.expect_expr(
            "a.rbegin()", result_type=riterator, result_children=riterator_children
        )

        self.expect_expr("*a.begin()", result_type="int", result_value="3")
        self.expect_expr("*a.rbegin()", result_type="int", result_value="1")

        self.expect("expr a.pop_back()")
        self.expect_expr("a.back()", result_type=value_type, result_value="2")
        self.expect_expr("a.size()", result_type=size_type, result_value="2")

        self.expect_expr("a.at(0)", result_type=value_type, result_value="3")

        self.expect("expr a.push_back(4)")
        self.expect_expr("a.back()", result_type=value_type, result_value="4")
        self.expect_expr("a.size()", result_type=size_type, result_value="3")

        self.expect("expr a.emplace_back(5)")
        self.expect_expr("a.back()", result_type=value_type, result_value="5")
        self.expect_expr("a.size()", result_type=size_type, result_value="4")

        self.expect_expr(
            "a",
            result_children=[
                ValueCheck(value="3"),
                ValueCheck(value="2"),
                ValueCheck(value="4"),
                ValueCheck(value="5"),
            ],
        )

        # Test that the typedef'd vector type can be substituted.
        self.expect("expr b.emplace_back(6)")
        self.expect_expr(
            "b",
            result_type="vector_long",
            result_children=[
                ValueCheck(value="3"),
                ValueCheck(value="1"),
                ValueCheck(value="2"),
                ValueCheck(value="6"),
            ],
        )