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#ifndef SRC_TINT_LANG_MSL_WRITER_OUTPUT_H_
#define SRC_TINT_LANG_MSL_WRITER_OUTPUT_H_

#include <cstdint>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>

namespace tint::msl::writer {

/// The output produced when generating MSL.
struct Output {
    /// Constructor
    Output();

    /// Destructor
    ~Output();

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

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

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

    /// True if the shader needs a UBO of buffer sizes.
    bool needs_storage_buffer_sizes = false;

    /// True if the generated shader uses the invariant attribute.
    bool has_invariant_attribute = false;

    /// A map from entry point name to a list of dynamic workgroup allocations.
    /// Each entry in 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;

    /// Indices into the array_length_from_uniform binding that are statically
    /// used.
    std::unordered_set<uint32_t> used_array_length_from_uniform_indices;
};

}  // namespace tint::msl::writer

#endif  // SRC_TINT_LANG_MSL_WRITER_OUTPUT_H_