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#ifndef SRC_TINT_LANG_MSL_WRITER_PRINTER_PRINTER_H_
#define SRC_TINT_LANG_MSL_WRITER_PRINTER_PRINTER_H_

#include <string>
#include <unordered_map>
#include <vector>

#include "src/tint/utils/result/result.h"

// Forward declarations
namespace tint::core::ir {
class Module;
}  // namespace tint::core::ir

namespace tint::msl::writer {

/// The output produced when printing MSL.
struct PrintResult {
    /// Constructor
    PrintResult();

    /// Destructor
    ~PrintResult();

    /// Copy constructor
    PrintResult(const PrintResult&);

    /// Copy assignment
    /// @returns this
    PrintResult& operator=(const PrintResult&);

    /// The generated MSL.
    std::string msl = "";

    /// A map from entry point name to a list of dynamic workgroup allocations.
    /// Each element of the vector is the size of the workgroup allocation that should be created
    /// for that index.
    std::unordered_map<std::string, std::vector<uint32_t>> workgroup_allocations;
};

/// @param module the Tint IR module to generate
/// @returns the result of printing the MSL shader on success, or failure
Result<PrintResult> Print(core::ir::Module& module);

}  // namespace tint::msl::writer

#endif  // SRC_TINT_LANG_MSL_WRITER_PRINTER_PRINTER_H_