public void Generate(Dictionary <string, CompileUnit> unitMap, uint strTypeID)
{
foreach (var unit in unitMap.Values)
{
foreach (string strDep in unit.StringDepends)
{
unit.ImplDepends.Add(StringToUnitName(strDep));
}
}
Dictionary <int, List <string> > unitStrMap = new Dictionary <int, List <string> >();
foreach (var kv in StringMap)
{
int unitIdx = kv.Value.UnitIndex;
if (!unitStrMap.TryGetValue(unitIdx, out var strList))
{
strList = new List <string>();
unitStrMap.Add(unitIdx, strList);
}
strList.Add(kv.Key);
}
foreach (var kv in unitStrMap)
{
var unit = new CompileUnit();
unit.Name = GetUnitName(kv.Key);
unit.DeclCode = GenStringCode(kv.Value, strTypeID);
unitMap[unit.Name] = unit;
}
}
private ulong GetDependOrder(CompileUnit unit, HashSet <string> stackUnitNames = null)
{
ulong depOrder = unit.DependOrder;
if (depOrder != 0)
{
return(depOrder);
}
string unitName = unit.Name;
if (stackUnitNames != null && stackUnitNames.Contains(unitName))
{
return(0);
}
if (stackUnitNames == null)
{
stackUnitNames = new HashSet <string>();
}
stackUnitNames.Add(unitName);
unit.Optimize(UnitMap);
foreach (string dep in unit.DeclDepends)
{
var depUnit = GetUnitFromMap(dep);
if (depUnit != null)
{
depOrder += GetDependOrder(depUnit, stackUnitNames);
}
}
++depOrder;
unit.DependOrder = depOrder;
return(depOrder);
}
public void Append(CompileUnit unit)
{
DeclCode += unit.DeclCode;
DeclDepends.UnionWith(unit.DeclDepends);
ImplCode += unit.ImplCode;
ImplDepends.UnionWith(unit.ImplDepends);
}
private CompileUnit NewUnit()
{
var unit = new CompileUnit();
unit.Name = "il2cppUnit_" + ++UnitCounter;
UnitMap.Add(unit.Name, unit);
return(unit);
}
private bool IsUnitFull(CompileUnit unit)
{
#if true
return(!unit.IsEmpty());
#else
return(unit.DeclCode.Length > 30000 ||
unit.ImplCode.Length > 100000);
#endif
}
private bool IsUnitFull(CompileUnit unit)
{
// 生成一个 .cpp 文件比什么 LTO 都好使
#if false
return(!unit.IsEmpty());
#else
return(unit.DeclCode.Length > 100000 ||
unit.ImplCode.Length > 1000000);
#endif
}
private void RefValueTypeDecl(CompileUnit unit, TypeSig tySig)
{
if (!tySig.IsValueType)
{
return;
}
TypeX tyX = GenContext.GetTypeBySig(tySig);
if (tyX != null)
{
unit.DeclDepends.Add(GenContext.GetTypeName(tyX));
}
}
private CompileUnit GenInitUnit(Dictionary <string, string> transMap)
{
CompileUnit unit = new CompileUnit();
unit.Name = "il2cppInit";
CodePrinter prtGC = new CodePrinter();
CodePrinter prtInit = new CodePrinter();
bool addedRoots = false;
foreach (var kv in InitFldsMap)
{
unit.ImplDepends.Add(transMap[kv.Key]);
foreach (var item in kv.Value)
{
if (item.Item2)
{
prtGC.AppendFormatLine("IL2CPP_ADD_ROOT({0}),", item.Item1);
addedRoots = true;
}
prtInit.AppendFormatLine("{0} = {{}};", item.Item1);
}
}
CodePrinter prtFunc = new CodePrinter();
prtFunc.AppendLine("void il2cpp_InitVariables()\n{");
++prtFunc.Indents;
if (addedRoots)
{
prtFunc.AppendLine("il2cppRootItem roots[] =\n{");
++prtFunc.Indents;
prtFunc.Append(prtGC.ToString());
--prtFunc.Indents;
prtFunc.AppendLine("};");
prtFunc.AppendLine("il2cpp_CommitRoots(roots, sizeof(roots) / sizeof(roots[0]));");
}
prtFunc.Append(prtInit.ToString());
--prtFunc.Indents;
prtFunc.AppendLine("}");
unit.ImplCode = prtFunc.ToString();
return(unit);
}
private uint GetDependOrder(CompileUnit unit)
{
uint depOrder = unit.DependOrder;
if (depOrder != 0)
{
return(depOrder);
}
unit.Optimize(UnitMap);
foreach (string dep in unit.DeclDepends)
{
depOrder += GetDependOrder(UnitMap[dep]);
}
++depOrder;
unit.DependOrder = depOrder;
return(depOrder);
}
public Dictionary <string, string> Merge()
{
// 排序编译单元
var sortedUnits = UnitMap.Values.ToList();
sortedUnits.Sort((lhs, rhs) => GetDependOrder(lhs).CompareTo(GetDependOrder(rhs)));
// 合并编译单元
UnitMap.Clear();
var transMap = new Dictionary <string, string>();
// 收集桥接代码的所有依赖项
var bridgeUnitNames = new HashSet <string>();
var bridgeUnits = new List <CompileUnit>();
var remainUnits = new List <CompileUnit>();
for (; ;)
{
bool changed = false;
foreach (var unit in sortedUnits)
{
string unitName = unit.Name;
if (BridgeTypes.Contains(unitName) ||
bridgeUnitNames.Contains(unitName))
{
bridgeUnits.Add(unit);
bridgeUnitNames.Add(unitName);
bridgeUnitNames.UnionWith(unit.DeclDepends);
changed = true;
}
else
{
remainUnits.Add(unit);
}
}
if (changed)
{
sortedUnits = remainUnits;
remainUnits = new List <CompileUnit>();
}
else
{
break;
}
}
bridgeUnits.Sort((lhs, rhs) => GetDependOrder(lhs).CompareTo(GetDependOrder(rhs)));
// 生成桥接单元
CompileUnit bridgeUnit = new CompileUnit();
bridgeUnit.Name = "il2cppBridge";
UnitMap.Add(bridgeUnit.Name, bridgeUnit);
foreach (var unit in bridgeUnits)
{
bridgeUnit.DeclCode += "#define IL2CPP_BRIDGE_HAS_" + unit.Name + '\n';
bridgeUnit.Append(unit);
transMap[unit.Name] = bridgeUnit.Name;
}
// 划分其他编译单元
CompileUnit currUnit = NewUnit();
foreach (var unit in sortedUnits)
{
Debug.Assert(!bridgeUnit.DeclDepends.Contains(unit.Name));
currUnit.Append(unit);
transMap[unit.Name] = currUnit.Name;
if (IsUnitFull(currUnit))
{
currUnit = NewUnit();
}
}
if (currUnit.IsEmpty())
{
UnitMap.Remove(currUnit.Name);
}
foreach (var unit in UnitMap.Values)
{
var declDeps = new HashSet <string>();
foreach (string dep in unit.DeclDepends)
{
declDeps.Add(transMap[dep]);
}
unit.DeclDepends = declDeps;
var implDeps = new HashSet <string>();
foreach (string dep in unit.ImplDepends)
{
implDeps.Add(transMap[dep]);
}
unit.ImplDepends = implDeps;
unit.Optimize(UnitMap);
}
return(transMap);
}
public Dictionary <string, string> Merge()
{
// 排序编译单元
var sortedUnits = UnitMap.Values.ToList();
sortedUnits.Sort((lhs, rhs) => GetDependOrder(lhs).CompareTo(GetDependOrder(rhs)));
// 合并编译单元
UnitMap.Clear();
var transMap = new Dictionary <string, string>();
CompileUnit bridgeUnit = new CompileUnit();
bridgeUnit.Name = "il2cppBridge";
UnitMap.Add(bridgeUnit.Name, bridgeUnit);
CompileUnit currUnit = NewUnit();
foreach (var unit in sortedUnits)
{
if (BridgeTypes.Contains(unit.Name))
{
bridgeUnit.Append(unit);
transMap[unit.Name] = bridgeUnit.Name;
}
else
{
currUnit.Append(unit);
transMap[unit.Name] = currUnit.Name;
if (IsUnitFull(currUnit))
{
currUnit = NewUnit();
}
}
}
if (currUnit.IsEmpty())
{
UnitMap.Remove(currUnit.Name);
}
foreach (var unit in UnitMap.Values)
{
var declDeps = new HashSet <string>();
foreach (string dep in unit.DeclDepends)
{
declDeps.Add(transMap[dep]);
}
unit.DeclDepends = declDeps;
var implDeps = new HashSet <string>();
foreach (string dep in unit.ImplDepends)
{
implDeps.Add(transMap[dep]);
}
unit.ImplDepends = implDeps;
unit.Optimize(UnitMap);
}
return(transMap);
}
public CompileUnit Generate()
{
CompileUnit unit = new CompileUnit();
unit.Name = GenContext.GetTypeName(CurrType);
// 重排字段
var fields = LayoutFields(out var sfields);
// 生成类结构
CodePrinter prtDecl = new CodePrinter();
if (!CurrType.IsEnumType)
{
prtDecl.AppendFormatLine("// {0}", CurrType.GetNameKey());
var baseType = CurrType.BaseType;
// 值类型不继承任何基类
if (CurrType.IsValueType)
{
baseType = null;
}
// 接口类型继承 object
if (baseType == null && CurrType.Def.IsInterface)
{
baseType = GenContext.TypeMgr.GetTypeByName("Object");
}
if (baseType != null)
{
string strBaseTypeName = GenContext.GetTypeName(baseType);
unit.DeclDepends.Add(strBaseTypeName);
prtDecl.AppendFormatLine("struct {0} : {1}",
GenContext.GetTypeName(CurrType),
strBaseTypeName);
}
else
{
prtDecl.AppendFormatLine("struct {0}",
GenContext.GetTypeName(CurrType));
}
prtDecl.AppendLine("{");
++prtDecl.Indents;
// 生成对象内置字段
if (CurrType.IsArrayType)
{
var arrayInfo = CurrType.ArrayInfo;
if (arrayInfo.IsSZArray)
{
prtDecl.AppendLine("int32_t Length;");
}
else
{
uint rank = arrayInfo.Rank;
for (int i = 0; i < rank; ++i)
{
prtDecl.AppendFormatLine("int32_t LowerBound{0};\nint32_t Size{0};", i);
}
}
}
else
{
string nameKey = CurrType.GetNameKey();
if (nameKey == "Object")
{
prtDecl.AppendLine("uint32_t TypeID;");
}
else if (nameKey == "System.Array")
{
prtDecl.AppendLine("int32_t Rank;");
}
}
// 生成字段
foreach (var fldX in fields)
{
RefValueTypeDecl(unit, fldX.FieldType);
prtDecl.AppendLine("// " + fldX.GetReplacedNameKey());
prtDecl.AppendFormatLine("{0} {1};",
GenContext.GetTypeName(fldX.FieldType),
GenContext.GetFieldName(fldX));
}
--prtDecl.Indents;
prtDecl.AppendLine("};");
}
CodePrinter prtImpl = new CodePrinter();
// 生成类型判断函数
GenerateIsType(prtDecl, prtImpl);
// 生成静态字段
foreach (var sfldX in sfields)
{
RefValueTypeDecl(unit, sfldX.FieldType);
string fldDecl = string.Format("{0} {1};",
GenContext.GetTypeName(sfldX.FieldType),
GenContext.GetFieldName(sfldX));
prtDecl.AppendFormatLine("// {0} -> {1}", sfldX.DeclType.GetNameKey(), sfldX.GetReplacedNameKey());
prtDecl.AppendLine("extern " + fldDecl);
prtImpl.AppendLine(fldDecl);
}
// 生成方法
foreach (MethodX metX in CurrType.Methods)
{
var metGen = new MethodGenerator(GenContext, metX);
metGen.Generate();
prtDecl.AppendFormatLine("// {0} -> {1}", metX.DeclType.GetNameKey(), metX.GetReplacedNameKey());
prtDecl.Append(metGen.DeclCode);
unit.DeclDepends.UnionWith(metGen.DeclDepends);
prtImpl.Append(metGen.ImplCode);
unit.ImplDepends.UnionWith(metGen.ImplDepends);
unit.StringDepends.UnionWith(metGen.StringDepends);
}
unit.DeclCode = prtDecl.ToString();
unit.ImplCode = prtImpl.ToString();
return(unit);
}
public CompileUnit Generate()
{
CompileUnit unit = new CompileUnit();
unit.Name = GenContext.GetTypeName(CurrType, false);
// 重排字段
var fields = LayoutFields(out var sfields);
string nameKey = CurrType.GetNameKey();
bool currIsObject = nameKey == "Object";
// 生成类结构
CodePrinter prtDecl = new CodePrinter();
if (!CurrType.IsEnumType)
{
prtDecl.AppendFormatLine("// {0}", nameKey);
var baseType = CurrType.BaseType;
// 值类型不继承任何基类
if (CurrType.IsValueType)
{
baseType = null;
}
// 接口类型继承 object
if (baseType == null && CurrType.Def.IsInterface)
{
baseType = GenContext.TypeMgr.GetTypeByName("Object");
}
if (baseType != null)
{
string strBaseTypeName = GenContext.GetTypeName(baseType);
unit.DeclDepends.Add(strBaseTypeName);
prtDecl.AppendFormatLine("struct {0} : {1}",
GenContext.GetTypeName(CurrType),
strBaseTypeName);
}
else
{
prtDecl.AppendFormatLine("struct {0}",
GenContext.GetTypeName(CurrType));
}
prtDecl.AppendLine("{");
++prtDecl.Indents;
// 生成对象内置字段
if (CurrType.IsArrayType)
{
var arrayInfo = CurrType.ArrayInfo;
if (!arrayInfo.IsSZArray)
{
uint rank = arrayInfo.Rank;
for (int i = 0; i < rank; ++i)
{
prtDecl.AppendFormatLine("int32_t LowerBound{0};\nuint32_t Size{0};", i);
}
}
}
else
{
if (currIsObject)
{
prtDecl.AppendLine("uint32_t TypeID;");
prtDecl.AppendLine("uint8_t Flags[4];");
}
else if (nameKey == "System.Array")
{
prtDecl.AppendLine("uintptr_t Length;");
prtDecl.AppendLine("uint32_t Rank;");
prtDecl.AppendLine("uint32_t ElemSize;");
}
}
bool isExplicitLayout = CurrType.Def.IsExplicitLayout;
uint classSize = CurrType.Def.ClassSize;
bool hasStructSize = CurrType.Def.HasClassLayout && classSize != 0;
if (isExplicitLayout || hasStructSize)
{
prtDecl.AppendLine("union\n{");
++prtDecl.Indents;
if (!isExplicitLayout && fields.Count != 0)
{
prtDecl.AppendLine("struct\n{");
++prtDecl.Indents;
}
}
int fldCounter = 0;
// 生成字段
foreach (var fldX in fields)
{
RefValueTypeDecl(unit, fldX.FieldType);
bool isFieldExLayout = isExplicitLayout && fldX.Def.FieldOffset != 0;
if (isFieldExLayout)
{
prtDecl.AppendLine("struct\n{");
++prtDecl.Indents;
prtDecl.AppendFormatLine("uint8_t padding_{0}[{1}];",
fldCounter,
fldX.Def.FieldOffset);
}
prtDecl.AppendLine("// " + fldX.GetReplacedNameKey());
prtDecl.AppendFormatLine("{0} {1};",
GenContext.GetTypeName(fldX.FieldType),
GenContext.GetFieldName(fldX));
if (isFieldExLayout)
{
--prtDecl.Indents;
prtDecl.AppendLine("};");
}
++fldCounter;
}
if (isExplicitLayout || hasStructSize)
{
if (!isExplicitLayout && fields.Count != 0)
{
--prtDecl.Indents;
prtDecl.AppendLine("};");
}
if (hasStructSize)
{
prtDecl.AppendFormatLine("uint8_t padding_struct[{0}];",
classSize);
}
--prtDecl.Indents;
prtDecl.AppendLine("};");
}
--prtDecl.Indents;
prtDecl.AppendLine("};");
}
CodePrinter prtImpl = new CodePrinter();
// 生成类型判断函数
GenerateIsType(prtDecl, prtImpl, currIsObject);
// 生成静态字段
foreach (var sfldX in sfields)
{
RefValueTypeDecl(unit, sfldX.FieldType);
string fldDecl = string.Format("{0} {1};",
GenContext.GetTypeName(sfldX.FieldType),
GenContext.GetFieldName(sfldX));
prtDecl.AppendFormatLine("// {0} -> {1}", sfldX.DeclType.GetNameKey(), sfldX.GetReplacedNameKey());
prtDecl.AppendLine("extern " + fldDecl);
prtImpl.AppendLine(fldDecl);
}
// 生成方法
foreach (MethodX metX in CurrType.Methods)
{
var metGen = new MethodGenerator(GenContext, metX);
metGen.Generate();
AppendRuntimeFlags(metX, prtDecl);
prtDecl.AppendFormatLine("// {0}{1}{2} -> {3}",
!metX.Def.HasBody && !metX.Def.IsAbstract ? "extern " : null,
metX.Def.IsInternalCall ? "internalcall " : null,
metX.DeclType.GetNameKey(),
metX.GetReplacedNameKey());
prtDecl.Append(metGen.DeclCode);
unit.DeclDepends.UnionWith(metGen.DeclDepends);
prtImpl.Append(metGen.ImplCode);
unit.ImplDepends.UnionWith(metGen.ImplDepends);
unit.StringDepends.UnionWith(metGen.StringDepends);
}
unit.DeclCode = prtDecl.ToString();
unit.ImplCode = prtImpl.ToString();
return(unit);
}
public CompileUnit Generate()
{
CompileUnit unit = new CompileUnit();
string strTypeName = GenContext.GetTypeName(CurrType, false);
unit.Name = strTypeName;
// 重排字段
var fields = LayoutFields(out var sfields);
string nameKey = CurrType.GetNameKey();
bool currIsObject = nameKey == "Object";
// 生成类结构
CodePrinter prtDecl = new CodePrinter();
if (!CurrType.IsEnumType)
{
prtDecl.AppendFormatLine("// {0}", Helper.EscapeString(nameKey));
ushort packSize = CurrType.Def.HasClassLayout ? CurrType.Def.PackingSize : (ushort)0;
if (packSize > 2 && !Helper.IsPowerOfTwo(packSize))
{
throw new TypeLoadException();
}
if (packSize != 0)
{
prtDecl.AppendLine("#if defined(IL2CPP_MSVC_LIKE)");
prtDecl.AppendFormatLine("#pragma pack(push, {0})", packSize);
prtDecl.AppendLine("#endif");
}
var baseType = CurrType.BaseType;
// 值类型不继承任何基类
if (CurrType.IsValueType)
{
baseType = null;
}
// 接口类型继承 object
if (baseType == null && CurrType.Def.IsInterface)
{
baseType = GenContext.GetTypeByName("Object");
}
if (baseType != null)
{
string strBaseTypeName = GenContext.GetTypeName(baseType);
unit.DeclDepends.Add(strBaseTypeName);
prtDecl.AppendFormatLine("struct {0} : {1}",
strTypeName,
strBaseTypeName);
}
else
{
prtDecl.AppendFormatLine("struct {0}",
strTypeName);
}
prtDecl.AppendLine("{");
++prtDecl.Indents;
// 生成对象内置字段
if (CurrType.IsArrayType)
{
var arrayInfo = CurrType.ArrayInfo;
if (!arrayInfo.IsSZArray)
{
uint rank = arrayInfo.Rank;
for (int i = 0; i < rank; ++i)
{
prtDecl.AppendFormatLine("int32_t LowerBound{0};\nuint32_t Size{0};", i);
}
}
}
else
{
if (currIsObject)
{
prtDecl.AppendLine("uint32_t TypeID;");
prtDecl.AppendLine("uint8_t Flags[4];");
}
else if (nameKey == "System.Array")
{
prtDecl.AppendLine("uint32_t Length;");
prtDecl.AppendLine("uint32_t ElemSize : 24;");
prtDecl.AppendLine("uint32_t Rank : 8;");
}
}
bool isExplicitLayout = CurrType.Def.IsExplicitLayout;
uint classSize = CurrType.Def.ClassSize;
bool hasStructSize = CurrType.Def.HasClassLayout && classSize != 0;
if (isExplicitLayout || hasStructSize)
{
prtDecl.AppendLine("union\n{");
++prtDecl.Indents;
if (!isExplicitLayout && fields.Count != 0)
{
prtDecl.AppendLine("struct\n{");
++prtDecl.Indents;
}
}
int fldCounter = 0;
// 生成字段
foreach (var fldX in fields)
{
RefValueTypeDecl(unit, fldX.FieldType);
bool isFieldExLayout = isExplicitLayout && fldX.Def.FieldOffset != 0;
if (isFieldExLayout)
{
prtDecl.AppendLine("struct\n{");
++prtDecl.Indents;
prtDecl.AppendFormatLine("uint8_t padding_{0}[{1}];",
fldCounter,
fldX.Def.FieldOffset);
}
prtDecl.AppendLine("// " + fldX.GetReplacedNameKey());
prtDecl.AppendFormatLine("{0} {1};",
GenContext.GetTypeName(fldX.FieldType),
GenContext.GetFieldName(fldX));
if (isFieldExLayout)
{
--prtDecl.Indents;
prtDecl.AppendLine("};");
}
++fldCounter;
}
if (isExplicitLayout || hasStructSize)
{
if (!isExplicitLayout && fields.Count != 0)
{
--prtDecl.Indents;
prtDecl.AppendLine("};");
}
if (hasStructSize)
{
prtDecl.AppendFormatLine("uint8_t padding_struct[{0}];",
classSize);
}
--prtDecl.Indents;
prtDecl.AppendLine("};");
}
--prtDecl.Indents;
if (packSize != 0)
{
prtDecl.AppendFormatLine("}} IL2CPP_PACKED_TAIL({0});",
packSize);
}
else
{
prtDecl.AppendLine("};");
}
if (packSize != 0)
{
prtDecl.AppendLine("#if defined(IL2CPP_MSVC_LIKE)");
prtDecl.AppendLine("#pragma pack(pop)");
prtDecl.AppendLine("#endif");
}
}
CodePrinter prtImpl = new CodePrinter();
// 生成静态字段
foreach (var sfldX in sfields)
{
RefValueTypeDecl(unit, sfldX.FieldType);
string sfldName = GenContext.GetFieldName(sfldX);
string fldDecl = string.Format("{0} {1};",
GenContext.GetTypeName(sfldX.FieldType),
sfldName);
prtDecl.AppendFormatLine("// {0} -> {1}",
Helper.EscapeString(sfldX.DeclType.GetNameKey()),
Helper.EscapeString(sfldX.GetReplacedNameKey()));
prtDecl.AppendLine("extern " + fldDecl);
prtImpl.AppendLine(fldDecl);
bool hasRef = GenContext.IsRefOrContainsRef(GenContext.GetTypeBySig(sfldX.FieldType));
GenContext.AddStaticField(strTypeName, sfldName, hasRef);
}
// 生成类型判断函数
GenIsTypeFunc(prtDecl, prtImpl, currIsObject);
// 生成方法
foreach (MethodX metX in CurrType.Methods)
{
var metGen = new MethodGenerator(GenContext, metX);
metGen.Generate();
AppendRuntimeFlags(metX, prtDecl);
prtDecl.AppendFormatLine("// {0}{1}{2} -> {3}",
Helper.IsExtern(metX.Def) ? "extern " : null,
metX.Def.IsInternalCall ? "internalcall " : null,
Helper.EscapeString(metX.DeclType.GetNameKey()),
Helper.EscapeString(metX.GetReplacedNameKey()));
prtDecl.Append(metGen.DeclCode);
unit.DeclDepends.UnionWith(metGen.DeclDepends);
prtImpl.Append(metGen.ImplCode);
unit.ImplDepends.UnionWith(metGen.ImplDepends);
unit.StringDepends.UnionWith(metGen.StringDepends);
}
GenerateMetadata(prtDecl, prtImpl);
unit.DeclCode = prtDecl.ToString();
unit.ImplCode = prtImpl.ToString();
return(unit);
}