global.hh

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#ifndef WASMTIME_GLOBAL_HH
#define WASMTIME_GLOBAL_HH
 
#include <wasmtime/error.hh>
#include <wasmtime/global.h>
#include <wasmtime/store.hh>
#include <wasmtime/types/global.hh>
#include <wasmtime/val.hh>
 
namespace wasmtime {
 
class Global {
  friend class Instance;
  wasmtime_global_t global;
 
public:
  Global(wasmtime_global_t global) : global(global) {}
 
  static Result<Global> create(Store::Context cx, const GlobalType &ty,
                               const Val &init) {
    wasmtime_global_t global;
    auto *error = wasmtime_global_new(cx.ptr, ty.ptr.get(), &init.val, &global);
    if (error != nullptr) {
      return Error(error);
    }
    return Global(global);
  }
 
  GlobalType type(Store::Context cx) const {
    return wasmtime_global_type(cx.ptr, &global);
  }
 
  Val get(Store::Context cx) const {
    Val val;
    wasmtime_global_get(cx.ptr, &global, &val.val);
    return std::move(val);
  }
 
  Result<std::monostate> set(Store::Context cx, const Val &val) const {
    auto *error = wasmtime_global_set(cx.ptr, &global, &val.val);
    if (error != nullptr) {
      return Error(error);
    }
    return std::monostate();
  }
 
  const wasmtime_global_t &capi() const { return global; }
};
 
} // namespace wasmtime
 
#endif // WASMTIME_GLOBAL_HH