Coverage Report

Created: 2026-11-09 06:49

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/WasmEdge/lib/loader/ast/component/component_instance.cpp
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// SPDX-License-Identifier: Apache-2.0
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// SPDX-FileCopyrightText: Copyright The WasmEdge Authors
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#include "loader/loader.h"
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namespace WasmEdge {
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namespace Loader {
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273k
Expect<void> Loader::loadInstance(AST::Component::CoreInstance &Instance) {
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273k
  auto ReportError = [this](auto E) {
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    return logLoadError(E, FMgr.getLastOffset(),
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                        ASTNodeAttr::Comp_CoreInstance);
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  };
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  // core:instance       ::= ie:<core:instanceexpr>
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  //                       => (instance ie)
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  // core:instanceexpr   ::= 0x00 m:<moduleidx> arg*:vec(<core:instantiatearg>)
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  //                       => (instantiate m arg*)
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  //                       | 0x01 e*:vec(<core:inlineexport>)
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  //                       => e*
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273k
  auto LoadInstArg =
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      [this](AST::Component::InstantiateArg<uint32_t> &Arg) -> Expect<void> {
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    auto ReportArgError = [this](auto E) {
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      return logLoadError(E, FMgr.getLastOffset(),
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                          ASTNodeAttr::Comp_CoreInstanceArg);
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    };
component_instance.cpp:auto WasmEdge::Loader::Loader::loadInstance(WasmEdge::AST::Component::CoreInstance&)::$_0::operator()(WasmEdge::AST::Component::InstantiateArg<unsigned int>&) const::{lambda(auto:1)#1}::operator()<WasmEdge::ErrCode>(WasmEdge::ErrCode) const
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    auto ReportArgError = [this](auto E) {
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      return logLoadError(E, FMgr.getLastOffset(),
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                          ASTNodeAttr::Comp_CoreInstanceArg);
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    };
component_instance.cpp:auto WasmEdge::Loader::Loader::loadInstance(WasmEdge::AST::Component::CoreInstance&)::$_0::operator()(WasmEdge::AST::Component::InstantiateArg<unsigned int>&) const::{lambda(auto:1)#1}::operator()<WasmEdge::ErrCode::Value>(WasmEdge::ErrCode::Value) const
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    auto ReportArgError = [this](auto E) {
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      return logLoadError(E, FMgr.getLastOffset(),
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                          ASTNodeAttr::Comp_CoreInstanceArg);
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    };
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    // core:instantiatearg ::= n:<core:name> 0x12 i:<instanceidx>
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    //                       => (with n (instance i))
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    EXPECTED_TRY(Arg.getName(), FMgr.readName().map_error(ReportArgError));
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    EXPECTED_TRY(uint8_t B, FMgr.readByte().map_error(ReportArgError));
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    if (B != 0x12U) {
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      return ReportArgError(ErrCode::Value::MalformedCoreInstance);
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    }
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    EXPECTED_TRY(Arg.getIndex(), FMgr.readU32().map_error(ReportArgError));
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    return {};
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  };
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273k
  auto LoadInlineExp =
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      [this](AST::Component::InlineExport &Exp) -> Expect<void> {
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    // core:inlineexport ::= n:<core:name> si:<core:sortidx> => (export n si)
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8.57k
    EXPECTED_TRY(Exp.getName(), FMgr.readName().map_error([this](auto E) {
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8.54k
      return logLoadError(E, FMgr.getLastOffset(),
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                          ASTNodeAttr::Comp_CoreInlineExport);
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    }));
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    return loadSortIndex(Exp.getSortIdx(), true).map_error([](auto E) {
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      spdlog::error(ErrInfo::InfoAST(ASTNodeAttr::Comp_CoreInlineExport));
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      return E;
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    });
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8.57k
  };
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  EXPECTED_TRY(uint8_t Flag, FMgr.readByte().map_error(ReportError));
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  switch (Flag) {
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148k
  case 0x00: {
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    EXPECTED_TRY(uint32_t Idx, FMgr.readU32().map_error(ReportError));
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148k
    std::vector<AST::Component::InstantiateArg<uint32_t>> Args;
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    EXPECTED_TRY(loadVec<AST::Component::CoreInstance>(Args, LoadInstArg));
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    Instance.setInstantiateArgs(Idx, std::move(Args));
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    return {};
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  }
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  case 0x01: {
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    std::vector<AST::Component::InlineExport> Exports;
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    EXPECTED_TRY(loadVec<AST::Component::CoreInstance>(Exports, LoadInlineExp));
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    Instance.setInlineExports(std::move(Exports));
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    return {};
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  }
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  default:
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    return logLoadError(ErrCode::Value::MalformedCoreInstance,
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                        FMgr.getLastOffset(), ASTNodeAttr::Comp_CoreInstance);
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  }
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}
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2.22M
Expect<void> Loader::loadInstance(AST::Component::Instance &Instance) {
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2.22M
  auto ReportError = [this](auto E) {
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    return logLoadError(E, FMgr.getLastOffset(), ASTNodeAttr::Comp_Instance);
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  };
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  // instance     ::= ie:<instanceexpr>
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  //                => (instance ie)
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  // instanceexpr ::= 0x00 c:<componentidx> arg*:vec(<instantiatearg>)
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  //                => (instantiate c arg*)
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  //                | 0x01 e*:vec(<inlineexport>)
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  //                => e*
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2.22M
  auto LoadInstArg =
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2.22M
      [this](AST::Component::InstantiateArg<AST::Component::SortIndex> &Arg)
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2.22M
      -> Expect<void> {
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    // instantiatearg ::= n:<string> si:<sortidx> => (with n si)
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13.7k
    EXPECTED_TRY(Arg.getName(), FMgr.readName().map_error([this](auto E) {
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13.7k
      return logLoadError(E, FMgr.getLastOffset(),
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                          ASTNodeAttr::Comp_InstanceArg);
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    }));
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    return loadSortIndex(Arg.getIndex()).map_error([](auto E) {
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      spdlog::error(ErrInfo::InfoAST(ASTNodeAttr::Comp_InstanceArg));
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      return E;
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    });
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13.7k
  };
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2.22M
  auto LoadInlineExp =
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2.22M
      [this](AST::Component::InlineExport &Exp) -> Expect<void> {
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    // inlineexport ::= na:<nameattributes> si:<sortidx> => (export na si)
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2.51k
    EXPECTED_TRY(loadNameAttributes(Exp.getName(), Exp.getImplements(),
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                                    Exp.getExternalIds(),
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2.47k
                                    Exp.getVersionSuffixes())
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                     .map_error([this](auto E) {
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                       return logLoadError(E, FMgr.getLastOffset(),
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                                           ASTNodeAttr::Comp_InlineExport);
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                     }));
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    return loadSortIndex(Exp.getSortIdx()).map_error([](auto E) {
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      spdlog::error(ErrInfo::InfoAST(ASTNodeAttr::Comp_InlineExport));
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      return E;
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    });
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  };
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2.22M
  EXPECTED_TRY(uint8_t Flag, FMgr.readByte().map_error(ReportError));
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2.22M
  switch (Flag) {
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1.02M
  case 0x00: {
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1.02M
    EXPECTED_TRY(uint32_t Idx, FMgr.readU32().map_error(ReportError));
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1.02M
    std::vector<AST::Component::InstantiateArg<AST::Component::SortIndex>> Args;
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1.02M
    EXPECTED_TRY(loadVec<AST::Component::Instance>(Args, LoadInstArg));
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1.02M
    Instance.setInstantiateArgs(Idx, std::move(Args));
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1.02M
    return {};
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  }
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1.19M
  case 0x01: {
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1.19M
    std::vector<AST::Component::InlineExport> Exports;
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1.19M
    EXPECTED_TRY(loadVec<AST::Component::Instance>(Exports, LoadInlineExp));
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1.19M
    Instance.setInlineExports(std::move(Exports));
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1.19M
    return {};
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1.19M
  }
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  default:
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    return logLoadError(ErrCode::Value::MalformedInstance, FMgr.getLastOffset(),
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                        ASTNodeAttr::Comp_Instance);
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2.22M
  }
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2.22M
}
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} // namespace Loader
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} // namespace WasmEdge