thespian/src/c/context.cpp
2024-02-08 23:04:55 +01:00

66 lines
2.2 KiB
C++

#include "thespian/env.hpp"
#include <__type_traits/is_swappable.h>
#include <thespian/c/context.h>
#include <thespian/c/handle.h>
#include <thespian/context.hpp>
#include <thespian/handle.hpp>
using std::string_view;
using thespian::context;
thread_local const char *last_error{}; // NOLINT
extern "C" {
auto thespian_get_last_error() -> const char * { return last_error; }
void thespian_set_last_error(const char *msg) { last_error = msg; }
thespian_context
thespian_context_create(thespian_context_destroy *d) { // NOLINT
return reinterpret_cast<thespian_context>( // NOLINT
context::create(reinterpret_cast<context::dtor *>(d))); // NOLINT
}
void thespian_context_run(thespian_context ctx) {
reinterpret_cast<context *>(ctx)->run(); // NOLINT
}
void thespian_context_on_last_exit(thespian_context ctx,
thespian_last_exit_handler h) {
reinterpret_cast<context *>(ctx)->on_last_exit(h); // NOLINT
}
auto thespian_context_spawn_link(thespian_context ctx_, thespian_behaviour b,
thespian_behaviour_state s,
thespian_exit_handler eh,
thespian_exit_handler_state es,
const char *name, thespian_env env,
thespian_handle *handle) -> int {
auto *ctx = reinterpret_cast<context *>(ctx_); // NOLINT
thespian::env_t empty_env_{};
thespian::env_t &env_ =
env ? *reinterpret_cast<thespian::env_t *>(env) : empty_env_; // NOLINT
auto ret = ctx->spawn_link(
[b, s]() -> thespian::result {
auto *ret = b(s);
if (ret) {
auto err = cbor::buffer();
const uint8_t *data = ret->base; // NOLINT
std::copy(data, data + ret->len, back_inserter(err)); // NOLINT
return thespian::to_error(err);
}
return thespian::ok();
},
[eh, es](auto e) {
if (eh)
eh(es, e.data(), e.size());
},
string_view(name), std::move(env_));
if (!ret)
return -1;
*handle = reinterpret_cast<thespian_handle>( // NOLINT
new thespian::handle{ret.value()});
return 0;
}
}