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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __FN_MULTI_FUNCTION_SIGNATURE_HH__
#define __FN_MULTI_FUNCTION_SIGNATURE_HH__
/** \file
* \ingroup fn
*
* The signature of a multi-function contains the functions name and expected parameters. New
* signatures should be build using the MFSignatureBuilder class.
*/
#include "FN_multi_function_param_type.hh"
#include "BLI_vector.hh"
namespace blender {
namespace fn {
struct MFSignature {
std::string function_name;
/* Use RawAllocator so that a MultiFunction can have static storage duration. */
Vector<std::string, 4, RawAllocator> param_names;
Vector<MFParamType, 4, RawAllocator> param_types;
Vector<uint, 4, RawAllocator> param_data_indices;
uint data_index(uint param_index) const
{
return param_data_indices[param_index];
}
};
class MFSignatureBuilder {
private:
MFSignature &m_data;
uint m_span_count = 0;
uint m_virtual_span_count = 0;
uint m_virtual_array_span_count = 0;
uint m_vector_array_count = 0;
public:
MFSignatureBuilder(MFSignature &data) : m_data(data)
{
BLI_assert(data.param_names.is_empty());
BLI_assert(data.param_types.is_empty());
BLI_assert(data.param_data_indices.is_empty());
}
/* Input Param Types */
template<typename T> void single_input(StringRef name)
{
this->single_input(name, CPPType::get<T>());
}
void single_input(StringRef name, const CPPType &type)
{
this->input(name, MFDataType::ForSingle(type));
}
template<typename T> void vector_input(StringRef name)
{
this->vector_input(name, CPPType::get<T>());
}
void vector_input(StringRef name, const CPPType &base_type)
{
this->input(name, MFDataType::ForVector(base_type));
}
void input(StringRef name, MFDataType data_type)
{
m_data.param_names.append(name);
m_data.param_types.append(MFParamType(MFParamType::Input, data_type));
switch (data_type.category()) {
case MFDataType::Single:
m_data.param_data_indices.append(m_virtual_span_count++);
break;
case MFDataType::Vector:
m_data.param_data_indices.append(m_virtual_array_span_count++);
break;
}
}
/* Output Param Types */
template<typename T> void single_output(StringRef name)
{
this->single_output(name, CPPType::get<T>());
}
void single_output(StringRef name, const CPPType &type)
{
this->output(name, MFDataType::ForSingle(type));
}
template<typename T> void vector_output(StringRef name)
{
this->vector_output(name, CPPType::get<T>());
}
void vector_output(StringRef name, const CPPType &base_type)
{
this->output(name, MFDataType::ForVector(base_type));
}
void output(StringRef name, MFDataType data_type)
{
m_data.param_names.append(name);
m_data.param_types.append(MFParamType(MFParamType::Output, data_type));
switch (data_type.category()) {
case MFDataType::Single:
m_data.param_data_indices.append(m_span_count++);
break;
case MFDataType::Vector:
m_data.param_data_indices.append(m_vector_array_count++);
break;
}
}
/* Mutable Param Types */
template<typename T> void single_mutable(StringRef name)
{
this->single_mutable(name, CPPType::get<T>());
}
void single_mutable(StringRef name, const CPPType &type)
{
this->mutable_(name, MFDataType::ForSingle(type));
}
template<typename T> void vector_mutable(StringRef name)
{
this->vector_mutable(name, CPPType::get<T>());
}
void vector_mutable(StringRef name, const CPPType &base_type)
{
this->mutable_(name, MFDataType::ForVector(base_type));
}
void mutable_(StringRef name, MFDataType data_type)
{
m_data.param_names.append(name);
m_data.param_types.append(MFParamType(MFParamType::Mutable, data_type));
switch (data_type.category()) {
case MFDataType::Single:
m_data.param_data_indices.append(m_span_count++);
break;
case MFDataType::Vector:
m_data.param_data_indices.append(m_vector_array_count++);
break;
}
}
};
} // namespace fn
} // namespace blender
#endif /* __FN_MULTI_FUNCTION_SIGNATURE_HH__ */
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