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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.
*/
#pragma once
/** \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::fn {
struct MFSignature {
std::string function_name;
Vector<std::string> param_names;
Vector<MFParamType> param_types;
Vector<int> param_data_indices;
bool depends_on_context = false;
int data_index(int param_index) const
{
return param_data_indices[param_index];
}
};
class MFSignatureBuilder {
private:
MFSignature signature_;
int span_count_ = 0;
int virtual_array_count_ = 0;
int virtual_vector_array_count_ = 0;
int vector_array_count_ = 0;
public:
MFSignatureBuilder(std::string function_name)
{
signature_.function_name = std::move(function_name);
}
MFSignature build() const
{
return std::move(signature_);
}
/* Input Parameter 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)
{
signature_.param_names.append(name);
signature_.param_types.append(MFParamType(MFParamType::Input, data_type));
switch (data_type.category()) {
case MFDataType::Single:
signature_.param_data_indices.append(virtual_array_count_++);
break;
case MFDataType::Vector:
signature_.param_data_indices.append(virtual_vector_array_count_++);
break;
}
}
/* Output Parameter 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)
{
signature_.param_names.append(name);
signature_.param_types.append(MFParamType(MFParamType::Output, data_type));
switch (data_type.category()) {
case MFDataType::Single:
signature_.param_data_indices.append(span_count_++);
break;
case MFDataType::Vector:
signature_.param_data_indices.append(vector_array_count_++);
break;
}
}
/* Mutable Parameter 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)
{
signature_.param_names.append(name);
signature_.param_types.append(MFParamType(MFParamType::Mutable, data_type));
switch (data_type.category()) {
case MFDataType::Single:
signature_.param_data_indices.append(span_count_++);
break;
case MFDataType::Vector:
signature_.param_data_indices.append(vector_array_count_++);
break;
}
}
void add(StringRef name, const MFParamType ¶m_type)
{
switch (param_type.interface_type()) {
case MFParamType::Input:
this->input(name, param_type.data_type());
break;
case MFParamType::Mutable:
this->mutable_(name, param_type.data_type());
break;
case MFParamType::Output:
this->output(name, param_type.data_type());
break;
}
}
/* Context */
/** This indicates that the function accesses the context. This disables optimizations that
* depend on the fact that the function always performers the same operation. */
void depends_on_context()
{
signature_.depends_on_context = true;
}
};
} // namespace blender::fn
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