54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
#pragma once
|
|
|
|
/** \file
|
|
* \ingroup fn
|
|
*
|
|
* An #MFContext is passed along with every call to a multi-function. Right now it does nothing,
|
|
* but it can be used for the following purposes:
|
|
* - Pass debug information up and down the function call stack.
|
|
* - Pass reusable memory buffers to sub-functions to increase performance.
|
|
* - Pass cached data to called functions.
|
|
*/
|
|
|
|
#include "BLI_utildefines.h"
|
|
|
|
#include "BLI_map.hh"
|
|
|
|
namespace blender::fn {
|
|
|
|
class MFContext;
|
|
|
|
class MFContextBuilder {
|
|
private:
|
|
Map<std::string, const void *> global_contexts_;
|
|
|
|
friend MFContext;
|
|
|
|
public:
|
|
template<typename T> void add_global_context(std::string name, const T *context)
|
|
{
|
|
global_contexts_.add_new(std::move(name), static_cast<const void *>(context));
|
|
}
|
|
};
|
|
|
|
class MFContext {
|
|
private:
|
|
MFContextBuilder &builder_;
|
|
|
|
public:
|
|
MFContext(MFContextBuilder &builder) : builder_(builder)
|
|
{
|
|
}
|
|
|
|
template<typename T> const T *get_global_context(StringRef name) const
|
|
{
|
|
const void *context = builder_.global_contexts_.lookup_default_as(name, nullptr);
|
|
/* TODO: Implement type checking. */
|
|
return static_cast<const T *>(context);
|
|
}
|
|
};
|
|
|
|
} // namespace blender::fn
|