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139 lines (121 loc) · 5.23 KB
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// Copyright (C) 2017-2018 Jonathan Müller <[email protected]>
// This file is subject to the license terms in the LICENSE file
// found in the top-level directory of this distribution.
#include <cppast/cpp_alias_template.hpp>
#include "test_parser.hpp"
using namespace cppast;
TEST_CASE("cpp_alias_template")
{
// no need to check advanced types here nor template parameters
auto code = R"(
/// template<typename T>
/// using a=int;
template <typename T>
using a = int;
/// template<int I,typename T=void>
/// using b=T;
template <int I, typename T = void>
using b = T;
/// template<typename T>
/// using c=T const*;
template <typename T>
using c = const T*;
/// template<typename T>
/// using d=a<void>;
template <typename T>
using d = a<void>;
/// template<int I>
/// using e=b<I> const;
template <int I>
using e = const b<I>;
/// template<int I>
/// using f=b<I < a<int>{(0 , 1)}, int>;
template <int I>
using f = b<I < a<int>{(0,1)}, int>;
/// template<typename T,template<typename>class Templ>
/// using g=Templ<T>;
template <typename T, template <typename> class Templ>
using g = Templ<T>;
/// template<typename T>
/// using h=g<T, a>;
template <typename T>
using h = g<T, a>;
)";
cpp_entity_index idx;
auto file = parse(idx, "cpp_alias_template.cpp", code);
auto count = test_visit<cpp_alias_template>(*file, [&](const cpp_alias_template& alias) {
REQUIRE(is_templated(alias.type_alias()));
REQUIRE(!alias.scope_name());
if (alias.name() == "a")
{
check_template_parameters(alias, {{cpp_entity_kind::template_type_parameter_t, "T"}});
REQUIRE(equal_types(idx, alias.type_alias().underlying_type(),
*cpp_builtin_type::build(cpp_int)));
}
else if (alias.name() == "b")
{
check_template_parameters(alias, {{cpp_entity_kind::non_type_template_parameter_t, "I"},
{cpp_entity_kind::template_type_parameter_t, "T"}});
REQUIRE(equal_types(idx, alias.type_alias().underlying_type(),
*cpp_template_parameter_type::build(
cpp_template_type_parameter_ref(cpp_entity_id(""), "T"))));
}
else if (alias.name() == "c")
{
check_template_parameters(alias, {{cpp_entity_kind::template_type_parameter_t, "T"}});
auto param = cpp_template_parameter_type::build(
cpp_template_type_parameter_ref(cpp_entity_id(""), "T"));
REQUIRE(equal_types(idx, alias.type_alias().underlying_type(),
*cpp_pointer_type::build(
cpp_cv_qualified_type::build(std::move(param), cpp_cv_const))));
}
else if (alias.name() == "d")
{
check_template_parameters(alias, {{cpp_entity_kind::template_type_parameter_t, "T"}});
cpp_template_instantiation_type::builder builder(
cpp_template_ref(cpp_entity_id(""), "a"));
builder.add_unexposed_arguments("void");
REQUIRE(equal_types(idx, alias.type_alias().underlying_type(), *builder.finish()));
}
else if (alias.name() == "e")
{
check_template_parameters(alias,
{{cpp_entity_kind::non_type_template_parameter_t, "I"}});
cpp_template_instantiation_type::builder builder(
cpp_template_ref(cpp_entity_id(""), "b"));
builder.add_unexposed_arguments("I");
REQUIRE(equal_types(idx, alias.type_alias().underlying_type(),
*cpp_cv_qualified_type::build(builder.finish(), cpp_cv_const)));
}
else if (alias.name() == "f")
{
check_template_parameters(alias,
{{cpp_entity_kind::non_type_template_parameter_t, "I"}});
cpp_template_instantiation_type::builder builder(
cpp_template_ref(cpp_entity_id(""), "b"));
builder.add_unexposed_arguments("I < a<int>{(0 , 1)}, int");
REQUIRE(equal_types(idx, alias.type_alias().underlying_type(), *builder.finish()));
}
else if (alias.name() == "g")
{
check_template_parameters(alias,
{{cpp_entity_kind::template_type_parameter_t, "T"},
{cpp_entity_kind::template_template_parameter_t, "Templ"}});
cpp_template_instantiation_type::builder builder(
cpp_template_ref(cpp_entity_id(""), "Templ"));
builder.add_unexposed_arguments("T");
REQUIRE(equal_types(idx, alias.type_alias().underlying_type(), *builder.finish()));
}
else if (alias.name() == "h")
{
check_template_parameters(alias, {{cpp_entity_kind::template_type_parameter_t, "T"}});
cpp_template_instantiation_type::builder builder(
cpp_template_ref(cpp_entity_id(""), "g"));
builder.add_unexposed_arguments("T, a");
REQUIRE(equal_types(idx, alias.type_alias().underlying_type(), *builder.finish()));
}
else
REQUIRE(false);
});
REQUIRE(count == 8u);
}