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// 1. Redistributions of source code must retain the above copyright notice, this
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// Doxygen seems to trip over this file for some unknown reason. Disable.
//! @cond Doxygen_Suppress

#include "src/tint/lang/wgsl/sem/builtin_fn.h"

#include <utility>

#include "src/tint/lang/core/intrinsic/table.h"
#include "src/tint/lang/core/type/texel_buffer.h"

TINT_INSTANTIATE_TYPEINFO(tint::sem::BuiltinFn);

namespace tint::sem {

const char* BuiltinFn::str() const {
    return wgsl::str(fn_);
}

BuiltinFn::BuiltinFn(wgsl::BuiltinFn type,
                     const core::type::Type* return_type,
                     VectorRef<Parameter*> parameters,
                     core::EvaluationStage eval_stage,
                     PipelineStageSet supported_stages,
                     const core::intrinsic::OverloadInfo& overload)
    : Base(return_type,
           std::move(parameters),
           eval_stage,
           overload.flags.Contains(core::intrinsic::OverloadFlag::kMustUse)),
      fn_(type),
      supported_stages_(supported_stages),
      overload_(overload) {}

BuiltinFn::~BuiltinFn() = default;

bool BuiltinFn::IsDeprecated() const {
    return overload_.flags.Contains(core::intrinsic::OverloadFlag::kIsDeprecated);
}

bool BuiltinFn::IsDerivative() const {
    return wgsl::IsDerivative(fn_);
}

bool BuiltinFn::IsBarrier() const {
    return wgsl::IsBarrier(fn_);
}

bool BuiltinFn::IsAtomic() const {
    return wgsl::IsAtomic(fn_);
}

bool BuiltinFn::IsPacked4x8IntegerDotProductBuiltin() const {
    return wgsl::IsPacked4x8IntegerDotProductBuiltin(fn_);
}

bool BuiltinFn::IsSubgroup() const {
    return wgsl::IsSubgroup(fn_);
}

bool BuiltinFn::IsSubgroupMatrix() const {
    return wgsl::IsSubgroupMatrix(fn_);
}

bool BuiltinFn::IsTexelBuffer() const {
    for (auto* param : Parameters()) {
        if (param->Type()->UnwrapRef()->Is<core::type::TexelBuffer>()) {
            return true;
        }
    }

    return false;
}

bool BuiltinFn::IsResourceTable() const {
    return wgsl::IsResourceTable(fn_);
}

wgsl::LanguageFeature BuiltinFn::RequiredLanguageFeature() const {
    if (fn_ == wgsl::BuiltinFn::kTextureBarrier) {
        return wgsl::LanguageFeature::kReadonlyAndReadwriteStorageTextures;
    }
    if (IsPacked4x8IntegerDotProductBuiltin()) {
        return wgsl::LanguageFeature::kPacked4X8IntegerDotProduct;
    }
    if (IsTexelBuffer()) {
        return wgsl::LanguageFeature::kTexelBuffers;
    }
    return wgsl::LanguageFeature::kUndefined;
}

}  // namespace tint::sem

//! @endcond
