/*
 * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
 * 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.
 */

/* static */
template<const BytecodeInstMode Mode>
constexpr bool BytecodeInst<Mode>::HasId(Format format, size_t idx) {
    switch (format) {
% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:id?)
%   next if n == 0
    case Format::<%= fmt.pretty.upcase %>:
        return idx < <%= n %>;
% end
    default: {
        return false;
    }
    }

    UNREACHABLE_CONSTEXPR();
}

/* static */
template<const BytecodeInstMode Mode>
constexpr bool BytecodeInst<Mode>::HasVReg(Format format, size_t idx) {
    switch (format) {
% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:reg?)
%   next if n == 0
    case Format::<%= fmt.pretty.upcase %>:
        return idx < <%= n %>;  // NOLINT(readability-magic-numbers)
% end
    default: {
        return false;
    }
    }

    UNREACHABLE_CONSTEXPR();
}

/* static */
template<const BytecodeInstMode Mode>
constexpr bool BytecodeInst<Mode>::HasImm(Format format, size_t idx) {
    switch (format) {
% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:imm?)
%   next if n == 0
    case Format::<%= fmt.pretty.upcase %>:
        return idx < <%= n %>;
% end
    default: {
        return false;
    }
    }

    UNREACHABLE_CONSTEXPR();
}

/* static */
template<const BytecodeInstMode Mode>
constexpr size_t BytecodeInst<Mode>::Size(Format format) {  // NOLINTNEXTLINE(readability-function-size)
    switch (format) {
% Panda::formats.each do |fmt|
    case Format::<%= fmt.pretty.upcase %>: {
        constexpr size_t SIZE = <%= fmt.size %>;
        return SIZE;
    }
% end
    }

    UNREACHABLE_CONSTEXPR();
}

template <const BytecodeInstMode Mode>
template <typename BytecodeInst<Mode>::Format format, size_t idx /* = 0 */>
inline BytecodeId BytecodeInst<Mode>::GetId() const {
    static_assert(HasId(format, idx), "Instruction doesn't have id operand with such index");

% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:id?)
%   next if n == 0
%
%   id_ops = i.operands.select(&:id?)
%   offsets = id_ops.map(&:offset)
%   widths = id_ops.map(&:width)
%
    // Disable check due to clang-tidy bug https://bugs.llvm.org/show_bug.cgi?id=32203
    // NOLINTNEXTLINE(readability-braces-around-statements, bugprone-suspicious-semicolon)
    if (format == Format::<%= fmt.pretty.upcase %>) {
%   if offsets.length == 1 && widths.length == 1
        return BytecodeId(static_cast<uint32_t>(Read<<%= offsets[0] %>, <%= widths[0] %>>()));
%   else
        constexpr std::array<size_t, <%= n %>> OFFSETS{<%= offsets.join(", ") %>};
        constexpr std::array<size_t, <%= n %>> WIDTHS{<%= widths.join(", ") %>};
        return BytecodeId(static_cast<uint32_t>(Read<OFFSETS[idx], WIDTHS[idx]>()));
%   end
    }

% end
    UNREACHABLE();
}

template <const BytecodeInstMode Mode>
inline void BytecodeInst<Mode>::UpdateId(BytecodeId new_id, uint32_t idx /* = 0 */) {
    Format format = GetFormat();
    ASSERT_PRINT(HasId(format, idx), "Instruction doesn't have imm operand with such index");

    if (!HasId(format, idx)) {
        return;
    }

% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:id?)
%   next if n == 0
%
%   id_ops = i.operands.select(&:id?)
%   offsets = id_ops.map(&:offset)
%   widths = id_ops.map(&:width)
%
    // Disable check due to clang-tidy bug https://bugs.llvm.org/show_bug.cgi?id=32203
    // NOLINTNEXTLINE(readability-braces-around-statements, bugprone-suspicious-semicolon)
    if (format == Format::<%= fmt.pretty.upcase %>) {
        constexpr std::array<size_t, <%= n %>> OFFSETS{<%= offsets.join(", ") %>};
        constexpr std::array<size_t, <%= n %>> WIDTHS{<%= widths.join(", ") %>};
        this->Write(new_id.AsRawValue(), OFFSETS[idx] / 8, WIDTHS[idx] / 8);
        return;
    }

% end
    UNREACHABLE();
}

template<const BytecodeInstMode Mode>
inline BytecodeId BytecodeInst<Mode>::GetId(size_t idx /* = 0 */) const {
    Format format = GetFormat();
    ASSERT_PRINT(HasId(format, idx), "Instruction doesn't have id operand with such index");

    if (!HasId(format, idx)) {
        return {};
    }

    switch (format) {
% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:id?)
%   next if n == 0
%
%   id_ops = i.operands.select(&:id?)
%   offsets = id_ops.map(&:offset)
%   widths = id_ops.map(&:width)
%
    case Format::<%= fmt.pretty.upcase %>: {
        constexpr std::array<size_t, <%= n %>> OFFSETS{<%= offsets.join(", ") %>};
        constexpr std::array<size_t, <%= n %>> WIDTHS{<%= widths.join(", ") %>};
        return BytecodeId(static_cast<uint32_t>(Read64(OFFSETS[idx], WIDTHS[idx])));
    }
% end
    default: {
        break;
    }
    }

    UNREACHABLE();
}

template <const BytecodeInstMode Mode>
template <typename BytecodeInst<Mode>::Format format, size_t idx /* = 0 */>
__attribute__ ((visibility("hidden")))
ALWAYS_INLINE inline uint16_t BytecodeInst<Mode>::GetVReg() const {  // NOLINTNEXTLINE(readability-function-size)
    static_assert(HasVReg(format, idx), "Instruction doesn't have vreg operand with such index");

% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:reg?)
%   next if n == 0
%
%   reg_ops = i.operands.select(&:reg?)
%   offsets = reg_ops.map(&:offset)
%   widths = reg_ops.map(&:width)
%
    // Disable check due to clang-tidy bug https://bugs.llvm.org/show_bug.cgi?id=32203
    // NOLINTNEXTLINE(readability-braces-around-statements, bugprone-suspicious-semicolon)
    if constexpr (format == Format::<%= fmt.pretty.upcase %>) {
        constexpr std::array<size_t, <%= n %>> OFFSETS{<%= offsets.join(", ") %>};
        constexpr std::array<size_t, <%= n %>> WIDTHS{<%= widths.join(", ") %>};
        return static_cast<uint16_t>(Read<OFFSETS[idx], WIDTHS[idx]>());
    }

% end
    UNREACHABLE();
}

template<const BytecodeInstMode Mode>
__attribute__ ((visibility("hidden")))
ALWAYS_INLINE inline uint16_t BytecodeInst<Mode>::GetVReg(size_t idx /* = 0 */) const {  // NOLINTNEXTLINE(readability-function-size)
    Format format = GetFormat();
    ASSERT_PRINT(HasVReg(format, idx), "Instruction doesn't have vreg operand with such index");

    if (!HasVReg(format, idx)) {
        return 0;
    }

    switch (format) {
% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:reg?)
%   next if n == 0
%
%   reg_ops = i.operands.select(&:reg?)
%   offsets = reg_ops.map(&:offset)
%   widths = reg_ops.map(&:width)
%
    case Format::<%= fmt.pretty.upcase %>: {
        constexpr std::array<size_t, <%= n %>> OFFSETS{<%= offsets.join(", ") %>};
        constexpr std::array<size_t, <%= n %>> WIDTHS{<%= widths.join(", ") %>};
        if (idx > <%= n - 1 %>) {
            break;
        }
        return static_cast<uint16_t>(Read64(OFFSETS[idx], WIDTHS[idx]));
    }
% end
    default: {
        break;
    }
    }

    UNREACHABLE();
}

template <const BytecodeInstMode Mode>
template <typename BytecodeInst<Mode>::Format format, size_t idx /* = 0 */>
inline auto BytecodeInst<Mode>::GetImm() const {  // NOLINTNEXTLINE(readability-function-size)
    static_assert(HasImm(format, idx), "Instruction doesn't have imm operand with such index");

% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:imm?)
%   next if n == 0
%
%   imm_ops = i.operands.select(&:imm?)
%   offsets = imm_ops.map(&:offset)
%   widths = imm_ops.map(&:width)
%
    // Disable check due to clang-tidy bug https://bugs.llvm.org/show_bug.cgi?id=32203
    // NOLINTNEXTLINE(readability-braces-around-statements, bugprone-suspicious-semicolon)
    if constexpr (format == Format::<%= fmt.pretty.upcase %>) {
        constexpr std::array<size_t, <%= n %>> OFFSETS{<%= offsets.join(", ") %>};
        constexpr std::array<size_t, <%= n %>> WIDTHS{<%= widths.join(", ") %>};
        return Read<OFFSETS[idx], WIDTHS[idx], true>();
    }

% end
    UNREACHABLE();
}

template<const BytecodeInstMode Mode>
inline auto BytecodeInst<Mode>::GetImm64(size_t idx /* = 0 */) const {
    Format format = GetFormat();
    ASSERT_PRINT(HasImm(format, idx), "Instruction doesn't have imm operand with such index");

    if (!HasImm(format, idx)) {
        return static_cast<int64_t>(0);
    }

    switch (format) {
% insns_uniq_sort_fmts.each do |i| # Panda::formats.each do |fmt|
%   fmt = i.format
%   n = i.operands.count(&:imm?)
%   next if n == 0
%
%   imm_ops = i.operands.select(&:imm?)
%   offsets = imm_ops.map(&:offset)
%   widths = imm_ops.map(&:width)
%
    case Format::<%= fmt.pretty.upcase %>: {
        constexpr std::array<size_t, <%= n %>> OFFSETS{<%= offsets.join(", ") %>};
        constexpr std::array<size_t, <%= n %>> WIDTHS{<%= widths.join(", ") %>};
        return Read64<true>(OFFSETS[idx], WIDTHS[idx]);
    }
% end
    default: {
        break;
    }
    }

    UNREACHABLE();
}

template <const BytecodeInstMode Mode>
inline typename BytecodeInst<Mode>::Opcode BytecodeInst<Mode>::GetOpcode() const {
    uint8_t primary = GetPrimaryOpcode();
    if (primary >= <%= Panda::prefixes.map(&:opcode_idx).min %>) {  // NOLINT(readability-magic-numbers)
        uint8_t secondary = GetSecondaryOpcode();
        return static_cast<BytecodeInst::Opcode>((secondary << 8U) | primary);  // NOLINT(hicpp-signed-bitwise)
    }
    return static_cast<BytecodeInst::Opcode>(primary);
}

template <const BytecodeInstMode Mode>
inline uint8_t BytecodeInst<Mode>::GetSecondaryOpcode() const {
    ASSERT(GetPrimaryOpcode() >= <%= Panda::prefixes.map(&:opcode_idx).min %>);  // NOLINT(readability-magic-numbers)
    return ReadByte(1);
}

/* static */
template <const BytecodeInstMode Mode>
constexpr uint8_t BytecodeInst<Mode>::GetMinPrefixOpcodeIndex() {
    return <%= Panda::prefixes.map(&:opcode_idx).min %>;  // NOLINT(readability-magic-numbers)
}

template <const BytecodeInstMode Mode>
inline bool BytecodeInst<Mode>::IsPrefixed() const {
    return GetPrimaryOpcode() >= <%= Panda::prefixes.map(&:opcode_idx).min %>;  // NOLINT(readability-magic-numbers)
}

template <const BytecodeInstMode Mode>
inline typename BytecodeInst<Mode>::Format BytecodeInst<Mode>::GetFormat() const {  // NOLINT(readability-function-size)
    return GetFormat(GetOpcode());
}

/* static */
template <const BytecodeInstMode Mode>
constexpr typename BytecodeInst<Mode>::Format BytecodeInst<Mode>::GetFormat(Opcode opcode) {  // NOLINT(readability-function-size)
    switch(opcode) {
% Panda::instructions.each do |i|
    case BytecodeInst<Mode>::Opcode::<%= i.opcode.upcase %>:
        return BytecodeInst<Mode>::Format::<%= i.format.pretty.upcase %>;
% end
    default:
        break;
    }

    UNREACHABLE();
}

// NOLINTNEXTLINE(readability-function-size)
template<const BytecodeInstMode Mode> inline bool BytecodeInst<Mode>::HasFlag(Flags flag) const {
    switch(GetOpcode()) {
% Panda::instructions.each do |i|
%   flag_array = i.real_properties.map {|prop| "Flags::" + prop.upcase}
%   flag_array += ['0'] if flag_array.empty?
%   flags = flag_array.join(' | ')
    case BytecodeInst<Mode>::Opcode::<%= i.opcode.upcase %>:
        return ((<%= flags %>) & flag) == flag;  // NOLINT(hicpp-signed-bitwise)
% end
    default:
        return false;
    }

    UNREACHABLE();
}

// NOLINTNEXTLINE(readability-function-size)
template<const BytecodeInstMode Mode> inline bool BytecodeInst<Mode>::IsIdMatchFlag(size_t idx, Flags flag) const {
    switch(GetOpcode()) {
% Panda::instructions.each do |i|
%   flag_array = i.real_properties.map {|prop| prop.upcase}
%   flag_array = [] if flag_array.empty?
%   ids = []
%   flag_array.each do |f|
%     if f == "STRING_ID" || f == "METHOD_ID" || f == "LITERALARRAY_ID"
%       ids << "Flags::" + f
%     end
%   end
    case BytecodeInst<Mode>::Opcode::<%= i.opcode.upcase %>: {
%   if ids.empty?
        return false;
    }
%   else
        constexpr std::array<Flags, <%= ids.size %>> ids_array { <%= ids.join(', ') %> };
        return ids_array[idx] == flag;
    }
%   end
% end
    default:
        return false;
    }
}

// NOLINTNEXTLINE(readability-function-size)
template<const BytecodeInstMode Mode> inline bool BytecodeInst<Mode>::IsThrow(Exceptions exception) const {
    switch(GetOpcode()) {
% Panda::instructions.each do |i|
%   exception_array = i.exceptions.map {|prop| "Exceptions::" + prop.upcase}
%   exception_array += ['0'] if exception_array.empty?
%   exceptions = exception_array.join(' | ')
    case BytecodeInst<Mode>::Opcode::<%= i.opcode.upcase %>:
        return ((<%= exceptions %>) & exception) == exception;  // NOLINT(hicpp-signed-bitwise)
% end
    default:
        return false;
    }

    UNREACHABLE();
}

// NOLINTNEXTLINE(readability-function-size)
template<const BytecodeInstMode Mode> inline bool BytecodeInst<Mode>::CanThrow() const {
    switch(GetOpcode()) {
% Panda::instructions.each do |i|
    case BytecodeInst<Mode>::Opcode::<%= i.opcode.upcase %>:
        return <%= i.exceptions != ["x_none"] %>;
% end
    default:
        return false;
    }

    UNREACHABLE();
}

// NOLINTNEXTLINE(readability-function-size)
template<const BytecodeInstMode Mode> std::ostream& operator<<(std::ostream& os, const BytecodeInst<Mode>& inst) {
    switch(inst.GetOpcode()) {
% Panda::instructions.each do |inst|
    case BytecodeInst<Mode>::Opcode::<%= inst.opcode.upcase %>:
        os << "<%= inst.mnemonic %>";
%   sep = " "
%   inst.each_operand do |op, idx|
%     op_str = "\"#{sep}v\" << inst.template GetVReg<BytecodeInst<Mode>::Format::#{inst.format.pretty.upcase}, #{idx}>()" if op.reg?
%     op_str = "\"#{sep}\" << inst.template GetImm<BytecodeInst<Mode>::Format::#{inst.format.pretty.upcase}, #{idx}>()" if op.imm?
%     op_str = "\"#{sep}id\" << inst.template GetId<BytecodeInst<Mode>::Format::#{inst.format.pretty.upcase}, #{idx}>()" if op.id?
        os << <%= op_str %>;
%     sep = ', '
%   end
        break;
% end
    }
    return os;
}

template<const BytecodeInstMode Mode> // NOLINTNEXTLINE(readability-function-size)
std::ostream& operator<<(std::ostream& os, const typename BytecodeInst<Mode>::Opcode& op)
{
    switch(op) {
% Panda::instructions.each do |inst|
    case BytecodeInst<Mode>::Opcode::<%= inst.opcode.upcase %>:
        os << "<%= inst.opcode.upcase %>";
        break;
% end
    default:
        os << "(unknown opcode:) " << static_cast<uint16_t>(op);
        break;

    }
    return os;
}

template <const BytecodeInstMode Mode>
inline bool BytecodeInst<Mode>::IsPrimaryOpcodeValid() const
{
    auto opcode = GetPrimaryOpcode();
    // NOLINTNEXTLINE(readability-magic-numbers)
    if (((opcode >= <%= Panda::dispatch_table.invalid_non_prefixed_interval.min %>) &&
        // NOLINTNEXTLINE(readability-magic-numbers)
        (opcode <= <%= Panda::dispatch_table.invalid_non_prefixed_interval.max %>)) ||
        // NOLINTNEXTLINE(readability-magic-numbers)
        ((opcode >= <%= Panda::dispatch_table.invalid_prefixes_interval.min %>) &&
        // NOLINTNEXTLINE(readability-magic-numbers)
        (opcode <= <%= Panda::dispatch_table.invalid_prefixes_interval.max %>))) {
        // NOLINTNEXTLINE(readability-simplify-boolean-expr)
        return false;
    }
    return true;
}