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#include "src/tint/lang/wgsl/helpers/check_supported_extensions.h"

#include <string>

#include "src/tint/lang/wgsl/ast/module.h"
#include "src/tint/utils/containers/hashset.h"
#include "src/tint/utils/diagnostic/diagnostic.h"
#include "src/tint/utils/text/string.h"

namespace tint::wgsl {

bool CheckSupportedExtensions(std::string_view writer_name,
                              const ast::Module& module,
                              diag::List& diags,
                              VectorRef<wgsl::Extension> supported) {
    Hashset<wgsl::Extension, 32> set;
    for (auto ext : supported) {
        set.Add(ext);
    }

    for (auto* enable : module.Enables()) {
        for (auto* ext : enable->extensions) {
            if (!set.Contains(ext->name)) {
                diags.add_error(diag::System::Writer,
                                std::string(writer_name) + " backend does not support extension '" +
                                    tint::ToString(ext->name) + "'",
                                ext->source);
                return false;
            }
        }
    }
    return true;
}

}  // namespace tint::wgsl