mirror of
https://github.com/openharmony/ark_runtime_core.git
synced 2026-07-01 13:17:23 -04:00
huangyu
04a4ad57e1
Signed-off-by: huangyu <huangyu76@huawei.com> Change-Id: I9ab44583d364fec1f73aa10d6d066e730b320c17
367 lines
11 KiB
C++
367 lines
11 KiB
C++
/*
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* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef PANDA_LIBPANDAFILE_FILE_H_
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#define PANDA_LIBPANDAFILE_FILE_H_
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#include "os/mem.h"
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#include "utils/span.h"
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#include "utils/utf.h"
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#include <cstdint>
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#include <array>
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#include <iostream>
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#include <memory>
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#include <string>
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#include <string_view>
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namespace panda {
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struct EntryFileStat;
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} // namespace panda
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namespace panda::panda_file {
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class PandaCache;
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class File {
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public:
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using Index = uint16_t;
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using Index32 = uint32_t;
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static constexpr size_t MAGIC_SIZE = 8;
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static constexpr size_t VERSION_SIZE = 4;
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static const std::array<uint8_t, MAGIC_SIZE> MAGIC;
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struct Header {
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std::array<uint8_t, MAGIC_SIZE> magic;
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uint32_t checksum;
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std::array<uint8_t, VERSION_SIZE> version;
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uint32_t file_size;
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uint32_t foreign_off;
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uint32_t foreign_size;
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uint32_t num_classes;
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uint32_t class_idx_off;
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uint32_t num_lnps;
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uint32_t lnp_idx_off;
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uint32_t num_literalarrays;
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uint32_t literalarray_idx_off;
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uint32_t num_indexes;
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uint32_t index_section_off;
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};
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struct IndexHeader {
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uint32_t start;
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uint32_t end;
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uint32_t class_idx_size;
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uint32_t class_idx_off;
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uint32_t method_idx_size;
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uint32_t method_idx_off;
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uint32_t field_idx_size;
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uint32_t field_idx_off;
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uint32_t proto_idx_size;
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uint32_t proto_idx_off;
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};
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struct StringData {
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StringData(uint32_t len, const uint8_t *d) : utf16_length(len), data(d), is_ascii(false) {}
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StringData() = default;
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uint32_t utf16_length; // NOLINT(misc-non-private-member-variables-in-classes)
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const uint8_t *data; // NOLINT(misc-non-private-member-variables-in-classes)
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bool is_ascii; // NOLINT(misc-non-private-member-variables-in-classes)
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};
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// NOLINTNEXTLINE(cppcoreguidelines-special-member-functions, hicpp-special-member-functions)
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class EntityId {
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public:
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explicit constexpr EntityId(uint32_t offset) : offset_(offset) {}
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EntityId() = default;
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~EntityId() = default;
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bool IsValid() const
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{
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return offset_ > sizeof(Header);
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}
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uint32_t GetOffset() const
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{
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return offset_;
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}
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static constexpr size_t GetSize()
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{
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return sizeof(uint32_t);
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}
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friend bool operator==(const EntityId &l, const EntityId &r)
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{
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return l.offset_ == r.offset_;
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}
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friend std::ostream &operator<<(std::ostream &stream, const EntityId &id)
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{
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return stream << id.offset_;
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}
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private:
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uint32_t offset_ {0};
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};
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enum OpenMode { READ_ONLY, READ_WRITE, WRITE_ONLY };
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StringData GetStringData(EntityId id) const;
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EntityId GetLiteralArraysId() const;
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EntityId GetClassId(const uint8_t *mutf8_name) const;
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const Header *GetHeader() const
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{
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return reinterpret_cast<const Header *>(GetBase());
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}
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const uint8_t *GetBase() const
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{
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return reinterpret_cast<const uint8_t *>(base_.Get());
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}
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const os::mem::ConstBytePtr &GetPtr() const
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{
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return base_;
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}
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bool IsExternal(EntityId id) const
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{
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const Header *header = GetHeader();
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uint32_t foreign_begin = header->foreign_off;
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uint32_t foreign_end = foreign_begin + header->foreign_size;
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return id.GetOffset() >= foreign_begin && id.GetOffset() < foreign_end;
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}
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EntityId GetIdFromPointer(const uint8_t *ptr) const
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{
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return EntityId(ptr - GetBase());
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}
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Span<const uint8_t> GetSpanFromId(EntityId id) const
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{
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const Header *header = GetHeader();
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Span file(GetBase(), header->file_size);
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return file.Last(file.size() - id.GetOffset());
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}
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Span<const uint32_t> GetClasses() const
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{
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const Header *header = GetHeader();
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Span file(GetBase(), header->file_size);
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Span class_idx_data = file.SubSpan(header->class_idx_off, header->num_classes * sizeof(uint32_t));
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return Span(reinterpret_cast<const uint32_t *>(class_idx_data.data()), header->num_classes);
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}
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Span<const uint32_t> GetLiteralArrays() const
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{
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const Header *header = GetHeader();
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Span file(GetBase(), header->file_size);
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Span litarr_idx_data = file.SubSpan(header->literalarray_idx_off, header->num_literalarrays * sizeof(uint32_t));
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return Span(reinterpret_cast<const uint32_t *>(litarr_idx_data.data()), header->num_literalarrays);
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}
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Span<const IndexHeader> GetIndexHeaders() const
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{
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const Header *header = GetHeader();
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Span file(GetBase(), header->file_size);
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auto sp = file.SubSpan(header->index_section_off, header->num_indexes * sizeof(IndexHeader));
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return Span(reinterpret_cast<const IndexHeader *>(sp.data()), header->num_indexes);
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}
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const IndexHeader *GetIndexHeader(EntityId id) const
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{
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auto headers = GetIndexHeaders();
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auto offset = id.GetOffset();
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for (const auto &header : headers) {
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if (header.start <= offset && offset < header.end) {
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return &header;
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}
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}
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return nullptr;
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}
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Span<const EntityId> GetClassIndex(EntityId id) const
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{
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auto *header = GetHeader();
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auto *index_header = GetIndexHeader(id);
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ASSERT(index_header != nullptr);
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Span file(GetBase(), header->file_size);
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auto sp = file.SubSpan(index_header->class_idx_off, index_header->class_idx_size * EntityId::GetSize());
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return Span(reinterpret_cast<const EntityId *>(sp.data()), index_header->class_idx_size);
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}
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Span<const EntityId> GetMethodIndex(EntityId id) const
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{
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auto *header = GetHeader();
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auto *index_header = GetIndexHeader(id);
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ASSERT(index_header != nullptr);
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Span file(GetBase(), header->file_size);
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auto sp = file.SubSpan(index_header->method_idx_off, index_header->method_idx_size * EntityId::GetSize());
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return Span(reinterpret_cast<const EntityId *>(sp.data()), index_header->method_idx_size);
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}
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Span<const EntityId> GetFieldIndex(EntityId id) const
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{
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auto *header = GetHeader();
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auto *index_header = GetIndexHeader(id);
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ASSERT(index_header != nullptr);
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Span file(GetBase(), header->file_size);
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auto sp = file.SubSpan(index_header->field_idx_off, index_header->field_idx_size * EntityId::GetSize());
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return Span(reinterpret_cast<const EntityId *>(sp.data()), index_header->field_idx_size);
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}
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Span<const EntityId> GetProtoIndex(EntityId id) const
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{
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auto *header = GetHeader();
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auto *index_header = GetIndexHeader(id);
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ASSERT(index_header != nullptr);
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Span file(GetBase(), header->file_size);
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auto sp = file.SubSpan(index_header->proto_idx_off, index_header->proto_idx_size * EntityId::GetSize());
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return Span(reinterpret_cast<const EntityId *>(sp.data()), index_header->proto_idx_size);
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}
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Span<const EntityId> GetLineNumberProgramIndex() const
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{
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const Header *header = GetHeader();
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Span file(GetBase(), header->file_size);
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Span lnp_idx_data = file.SubSpan(header->lnp_idx_off, header->num_lnps * EntityId::GetSize());
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return Span(reinterpret_cast<const EntityId *>(lnp_idx_data.data()), header->num_lnps);
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}
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EntityId ResolveClassIndex(EntityId id, Index idx) const
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{
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auto index = GetClassIndex(id);
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return index[idx];
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}
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EntityId ResolveMethodIndex(EntityId id, Index idx) const
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{
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auto index = GetMethodIndex(id);
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return index[idx];
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}
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EntityId ResolveFieldIndex(EntityId id, Index idx) const
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{
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auto index = GetFieldIndex(id);
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return index[idx];
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}
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EntityId ResolveProtoIndex(EntityId id, Index idx) const
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{
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auto index = GetProtoIndex(id);
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return index[idx];
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}
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EntityId ResolveLineNumberProgramIndex(Index32 idx) const
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{
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auto index = GetLineNumberProgramIndex();
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return index[idx];
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}
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const std::string &GetFilename() const
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{
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return FILENAME;
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}
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PandaCache *GetPandaCache() const
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{
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return panda_cache_.get();
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}
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uint32_t GetFilenameHash() const
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{
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return FILENAME_HASH;
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}
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uint64_t GetUniqId() const
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{
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return UNIQ_ID;
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}
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static uint32_t CalcFilenameHash(const std::string &filename);
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static std::unique_ptr<const File> Open(std::string_view filename, OpenMode open_mode = READ_ONLY);
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static std::unique_ptr<const File> OpenFromMemory(os::mem::ConstBytePtr &&ptr);
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static std::unique_ptr<const File> OpenFromMemory(os::mem::ConstBytePtr &&ptr, std::string_view filename);
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static std::unique_ptr<const File> OpenUncompressedArchive(int fd, const std::string_view &filename, size_t size,
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uint32_t offset, OpenMode open_mode = READ_ONLY);
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~File();
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NO_COPY_SEMANTIC(File);
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NO_MOVE_SEMANTIC(File);
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private:
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File(std::string filename, os::mem::ConstBytePtr &&base);
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const std::string FILENAME;
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const uint32_t FILENAME_HASH;
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os::mem::ConstBytePtr base_;
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std::unique_ptr<PandaCache> panda_cache_;
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const uint64_t UNIQ_ID;
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};
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inline bool operator==(const File::StringData &string_data1, const File::StringData &string_data2)
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{
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if (string_data1.utf16_length != string_data2.utf16_length) {
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return false;
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}
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return utf::IsEqual(string_data1.data, string_data2.data);
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}
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inline bool operator!=(const File::StringData &string_data1, const File::StringData &string_data2)
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{
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return !(string_data1 == string_data2);
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}
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/*
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* OpenPandaFileOrZip from location which specicify the name.
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*/
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std::unique_ptr<const File> OpenPandaFileOrZip(std::string_view location,
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panda_file::File::OpenMode open_mode = panda_file::File::READ_ONLY);
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/*
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* OpenPandaFileFromMemory from file buffer.
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*/
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std::unique_ptr<const File> OpenPandaFileFromMemory(const void *buffer, size_t size);
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/*
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* OpenPandaFile from location which specicify the name.
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*/
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std::unique_ptr<const File> OpenPandaFile(std::string_view location, std::string_view archive_filename = "",
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panda_file::File::OpenMode open_mode = panda_file::File::READ_ONLY);
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/*
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* Check ptr point valid panda file: magic
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*/
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bool CheckHeader(const os::mem::ConstBytePtr &ptr, const std::string_view &filename = "");
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// NOLINTNEXTLINE(readability-identifier-naming)
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extern const char *ARCHIVE_FILENAME;
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} // namespace panda::panda_file
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#endif // PANDA_LIBPANDAFILE_FILE_H_
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