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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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91
example/enum_to_string.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 `to_string()` code.
@ -17,55 +16,51 @@
void generate_to_string(const cppast::cpp_file& file)
{
cppast::visit(file,
[](const cppast::cpp_entity& e) {
// only visit enum definitions that have the attribute set
return (e.kind() == cppast::cpp_entity_kind::enum_t
&& cppast::is_definition(e)
&& cppast::has_attribute(e, "generate::to_string"))
// 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::enum_t && !info.is_old_entity())
{
// a new enum, generate to string function
auto& enum_ = static_cast<const cppast::cpp_enum&>(e);
cppast::visit(
file,
[](const cppast::cpp_entity& e) {
// only visit enum definitions that have the attribute set
return (e.kind() == cppast::cpp_entity_kind::enum_t && cppast::is_definition(e)
&& cppast::has_attribute(e, "generate::to_string"))
// 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::enum_t && !info.is_old_entity())
{
// a new enum, generate to string function
auto& enum_ = static_cast<const cppast::cpp_enum&>(e);
// write function header
std::cout << "inline const char* to_string(const " << enum_.name()
<< "& e) {\n";
// write function header
std::cout << "inline const char* to_string(const " << enum_.name() << "& e) {\n";
// generate switch
std::cout << " switch (e) {\n";
for (const auto& enumerator : enum_)
{
std::cout << " case " << enum_.name() << "::" << enumerator.name()
<< ":\n";
// generate switch
std::cout << " switch (e) {\n";
for (const auto& enumerator : enum_)
{
std::cout << " case " << enum_.name() << "::" << enumerator.name() << ":\n";
// attribute can be used to override the string
if (auto attr
= cppast::has_attribute(enumerator, "generate::to_string"))
std::cout << " return "
<< attr.value().arguments().value().as_string()
<< ";\n";
else
std::cout << " return \"" << enumerator.name() << "\";\n";
}
std::cout << " }\n";
// attribute can be used to override the string
if (auto attr = cppast::has_attribute(enumerator, "generate::to_string"))
std::cout << " return " << attr.value().arguments().value().as_string()
<< ";\n";
else
std::cout << " return \"" << enumerator.name() << "\";\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[])