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This commit is contained in:
Jonathan Müller 2022-02-07 20:43:22 +01:00
commit 62e571a4d6
133 changed files with 936 additions and 1103 deletions
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116
example/enum_category.cpp
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@ -1,6 +1,5 @@
// Copyright (C) 2017-2019 Jonathan Müller <jonathanmueller.dev@gmail.com>
// This file is subject to the license terms in the LICENSE file
// found in the top-level directory of this distribution.
// Copyright (C) 2017-2022 Jonathan Müller and cppast contributors
// SPDX-License-Identifier: MIT
/// \file
/// Generates enum category functions.
@ -55,68 +54,67 @@ const cppast::cpp_enum& get_enum(const cppast::cpp_entity_index& index,
// generates the function definitions
void generate_enum_category(const cppast::cpp_entity_index& index, const cppast::cpp_file& file)
{
cppast::visit(file,
[](const cppast::cpp_entity& e) {
// only visit function declarations that have the attribute set
return (e.kind() == cppast::cpp_entity_kind::function_t
&& !cppast::is_definition(e)
&& cppast::has_attribute(e, "generate::enum_category"))
// or all namespaces
|| e.kind() == cppast::cpp_entity_kind::namespace_t;
},
[&](const cppast::cpp_entity& e, const cppast::visitor_info& info) {
if (e.kind() == cppast::cpp_entity_kind::function_t)
{
// a new function, generate implementation
assert(info.is_new_entity());
cppast::visit(
file,
[](const cppast::cpp_entity& e) {
// only visit function declarations that have the attribute set
return (e.kind() == cppast::cpp_entity_kind::function_t && !cppast::is_definition(e)
&& cppast::has_attribute(e, "generate::enum_category"))
// or all namespaces
|| e.kind() == cppast::cpp_entity_kind::namespace_t;
},
[&](const cppast::cpp_entity& e, const cppast::visitor_info& info) {
if (e.kind() == cppast::cpp_entity_kind::function_t)
{
// a new function, generate implementation
assert(info.is_new_entity());
auto category = cppast::has_attribute(e, "generate::enum_category")
.value()
.arguments()
.value()
.as_string();
auto category = cppast::has_attribute(e, "generate::enum_category")
.value()
.arguments()
.value()
.as_string();
auto& func = static_cast<const cppast::cpp_function&>(e);
// return type must be bool
assert(func.return_type().kind() == cppast::cpp_type_kind::builtin_t
&& static_cast<const cppast::cpp_builtin_type&>(func.return_type())
.builtin_type_kind()
== cppast::cpp_bool);
auto& func = static_cast<const cppast::cpp_function&>(e);
// return type must be bool
assert(func.return_type().kind() == cppast::cpp_type_kind::builtin_t
&& static_cast<const cppast::cpp_builtin_type&>(func.return_type())
.builtin_type_kind()
== cppast::cpp_bool);
// single parameter...
assert(std::next(func.parameters().begin()) == func.parameters().end());
auto& param = *func.parameters().begin();
auto& enum_ = get_enum(index, param);
// single parameter...
assert(std::next(func.parameters().begin()) == func.parameters().end());
auto& param = *func.parameters().begin();
auto& enum_ = get_enum(index, param);
// generate function definition
std::cout << "inline bool " << func.name() << "("
<< cppast::to_string(param.type()) << " e) {\n";
// generate function definition
std::cout << "inline bool " << func.name() << "(" << cppast::to_string(param.type())
<< " e) {\n";
// generate switch
std::cout << " switch (e) {\n";
for (const auto& enumerator : enum_)
{
std::cout << " case " << enum_.name() << "::" << enumerator.name()
<< ":\n";
if (is_category(enumerator, category))
std::cout << " return true;\n";
else
std::cout << " return false;\n";
}
std::cout << " }\n";
// generate switch
std::cout << " switch (e) {\n";
for (const auto& enumerator : enum_)
{
std::cout << " case " << enum_.name() << "::" << enumerator.name() << ":\n";
if (is_category(enumerator, category))
std::cout << " return true;\n";
else
std::cout << " return false;\n";
}
std::cout << " }\n";
std::cout << "}\n\n";
}
else if (e.kind() == cppast::cpp_entity_kind::namespace_t)
{
if (info.event == cppast::visitor_info::container_entity_enter)
// open namespace
std::cout << "namespace " << e.name() << " {\n\n";
else // if (info.event == cppast::visitor_info::container_entity_exit)
// close namespace
std::cout << "}\n";
}
});
std::cout << "}\n\n";
}
else if (e.kind() == cppast::cpp_entity_kind::namespace_t)
{
if (info.event == cppast::visitor_info::container_entity_enter)
// open namespace
std::cout << "namespace " << e.name() << " {\n\n";
else // if (info.event == cppast::visitor_info::container_entity_exit)
// close namespace
std::cout << "}\n";
}
});
}
int main(int argc, char* argv[])