src/tint/sem/type.cc

// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "src/tint/sem/type.h"

#include "src/tint/sem/abstract_float.h"
#include "src/tint/sem/abstract_int.h"
#include "src/tint/sem/bool.h"
#include "src/tint/sem/f16.h"
#include "src/tint/sem/f32.h"
#include "src/tint/sem/i32.h"
#include "src/tint/sem/matrix.h"
#include "src/tint/sem/pointer.h"
#include "src/tint/sem/reference.h"
#include "src/tint/sem/sampler.h"
#include "src/tint/sem/texture.h"
#include "src/tint/sem/u32.h"
#include "src/tint/sem/vector.h"

TINT_INSTANTIATE_TYPEINFO(tint::sem::Type);

namespace tint::sem {

Type::Type() = default;

Type::Type(Type&&) = default;

Type::~Type() = default;

const Type* Type::UnwrapPtr() const {
    auto* type = this;
    while (auto* ptr = type->As<sem::Pointer>()) {
        type = ptr->StoreType();
    }
    return type;
}

const Type* Type::UnwrapRef() const {
    auto* type = this;
    if (auto* ref = type->As<sem::Reference>()) {
        type = ref->StoreType();
    }
    return type;
}

uint32_t Type::Size() const {
    return 0;
}

uint32_t Type::Align() const {
    return 0;
}

bool Type::IsConstructible() const {
    return false;
}

bool Type::is_scalar() const {
    return IsAnyOf<F16, F32, U32, I32, Bool>();
}

bool Type::is_numeric_scalar() const {
    return IsAnyOf<F16, F32, U32, I32>();
}

bool Type::is_float_scalar() const {
    return IsAnyOf<F16, F32>();
}

bool Type::is_float_matrix() const {
    return Is([](const Matrix* m) { return m->type()->is_float_scalar(); });
}

bool Type::is_square_float_matrix() const {
    return Is(
        [](const Matrix* m) { return m->type()->is_float_scalar() && m->rows() == m->columns(); });
}

bool Type::is_float_vector() const {
    return Is([](const Vector* v) { return v->type()->is_float_scalar(); });
}

bool Type::is_float_scalar_or_vector() const {
    return is_float_scalar() || is_float_vector();
}

bool Type::is_float_scalar_or_vector_or_matrix() const {
    return is_float_scalar() || is_float_vector() || is_float_matrix();
}

bool Type::is_integer_scalar() const {
    return IsAnyOf<U32, I32>();
}

bool Type::is_signed_integer_scalar() const {
    return Is<I32>();
}

bool Type::is_unsigned_integer_scalar() const {
    return Is<U32>();
}

bool Type::is_signed_integer_vector() const {
    return Is([](const Vector* v) { return v->type()->Is<I32>(); });
}

bool Type::is_unsigned_integer_vector() const {
    return Is([](const Vector* v) { return v->type()->Is<U32>(); });
}

bool Type::is_unsigned_scalar_or_vector() const {
    return Is<U32>() || is_unsigned_integer_vector();
}

bool Type::is_signed_scalar_or_vector() const {
    return Is<I32>() || is_signed_integer_vector();
}

bool Type::is_integer_scalar_or_vector() const {
    return is_unsigned_scalar_or_vector() || is_signed_scalar_or_vector();
}

bool Type::is_bool_vector() const {
    return Is([](const Vector* v) { return v->type()->Is<Bool>(); });
}

bool Type::is_bool_scalar_or_vector() const {
    return Is<Bool>() || is_bool_vector();
}

bool Type::is_numeric_vector() const {
    return Is([](const Vector* v) { return v->type()->is_numeric_scalar(); });
}

bool Type::is_scalar_vector() const {
    return Is([](const Vector* v) { return v->type()->is_scalar(); });
}

bool Type::is_numeric_scalar_or_vector() const {
    return is_numeric_scalar() || is_numeric_vector();
}

bool Type::is_handle() const {
    return IsAnyOf<Sampler, Texture>();
}

uint32_t Type::ConversionRank(const Type* from, const Type* to) {
    if (from->UnwrapRef() == to) {
        return 0;
    }
    return Switch(
        from,
        [&](const AbstractFloat*) {
            return Switch(
                to,                             //
                [&](const F32*) { return 1; },  //
                [&](const F16*) { return 2; },  //
                [&](Default) { return kNoConversion; });
        },
        [&](const AbstractInt*) {
            return Switch(
                to,                                       //
                [&](const I32*) { return 3; },            //
                [&](const U32*) { return 4; },            //
                [&](const AbstractFloat*) { return 5; },  //
                [&](const F32*) { return 6; },            //
                [&](const F16*) { return 7; },            //
                [&](Default) { return kNoConversion; });
        },
        [&](const Vector* from_vec) {
            if (auto* to_vec = to->As<Vector>()) {
                if (from_vec->Width() == to_vec->Width()) {
                    return ConversionRank(from_vec->type(), to_vec->type());
                }
            }
            return kNoConversion;
        },
        [&](const Matrix* from_mat) {
            if (auto* to_mat = to->As<Matrix>()) {
                if (from_mat->columns() == to_mat->columns() &&
                    from_mat->rows() == to_mat->rows()) {
                    return ConversionRank(from_mat->type(), to_mat->type());
                }
            }
            return kNoConversion;
        },
        [&](Default) { return kNoConversion; });
}

}  // namespace tint::sem