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"""
Test importing the 'std' C++ module and evaluate expressions with it.
"""
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ImportStdModule(TestBase):
@add_test_categories(["libc++"])
@skipIf(compiler=no_match("clang"))
def test(self):
self.build()
lldbutil.run_to_source_breakpoint(
self, "// Set break point at this line.", lldb.SBFileSpec("main.cpp")
)
# Activate importing of std module.
self.runCmd("settings set target.import-std-module true")
# Calling some normal std functions that return non-template types.
self.expect_expr("std::abs(-42)", result_type="int", result_value="42")
self.expect_expr(
"std::minmax<int>(1, 2).first", result_type="const int", result_value="1"
)
self.expect_expr("std::div(2, 1).quot", result_type="int", result_value="2")
# Using types from std.
self.expect_expr(
"(std::size_t)33U", result_type="std::size_t", result_value="33"
)
# Calling templated functions that return non-template types.
self.expect_expr(
"char char_a = 'b'; char char_b = 'a'; std::swap(char_a, char_b); char_a",
result_type="char",
result_value="'a'",
)
@add_test_categories(["libc++"])
@skipIf(compiler=no_match("clang"))
def test_non_cpp_language(self):
self.build()
lldbutil.run_to_source_breakpoint(
self, "// Set break point at this line.", lldb.SBFileSpec("main.cpp")
)
# Activate importing of std module.
self.runCmd("settings set target.import-std-module true")
# These languages don't support C++ modules, so they shouldn't
# be able to evaluate the expression.
self.expect("expr -l C -- std::minmax<int>(1, 2).first", error=True)
self.expect("expr -l C99 -- std::minmax<int>(1, 2).first", error=True)
self.expect("expr -l C11 -- std::minmax<int>(1, 2).first", error=True)
self.expect("expr -l ObjC -- std::minmax<int>(1, 2).first", error=True)
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