#include "ShaderGenerator.h"

#include "Core/FileSystem.h"

#include <cctype>

namespace sh::render

{

auto ShaderGenerator::ReplaceSpaceString(const std::string& str) -> std::string

{

std::string result;

result.reserve(str.size());

for (char c : str)

{

if (std::isalnum(static_cast<unsigned char>(c)))

result.push_back(c);

else

result.push_back('_');

}

return result;

}

SH_RENDER_API auto ShaderGenerator::GenerateShaderFile(

const std::string& shaderName,

const ShaderAST::PassNode& passNode,

const std::filesystem::path& path) -> std::vector<std::filesystem::path>

{

std::vector<std::filesystem::path> results;

for (auto& stage : passNode.stages)

{

std::string fileName{ ReplaceSpaceString(shaderName + "_" + passNode.name) };

if (stage.type == ShaderAST::StageType::Vertex)

fileName += ".vert";

else if (stage.type == ShaderAST::StageType::Fragment)

fileName += ".frag";

if (core::FileSystem::SaveText(stage.code, path / fileName))

results.push_back(path / fileName);

}

return results;

}

}//namespace