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 void GenerateIsType(CodePrinter prtDecl, CodePrinter prtImpl)
{
if (CurrType.IsValueType)
{
return;
}
CodePrinter prt = new CodePrinter();
prt.AppendFormat("uint8_t istype_{0}(uint32_t typeID)",
GenContext.GetTypeName(CurrType));
string strDecl = prt.ToString() + ";\n";
prt.AppendLine("\n{");
++prt.Indents;
var derivedRange = new List <TypeX>(CurrType.DerivedTypes);
derivedRange.Add(CurrType);
List <TypeX> derTypes = new List <TypeX>();
foreach (var derTyX in derivedRange)
{
// 跳过不分配在堆上的类型
if (!derTyX.IsInstantiated || derTyX.IsValueType || derTyX.Def.IsInterface)
{
continue;
}
derTypes.Add(derTyX);
}
if (derTypes.Count > 0)
{
prt.AppendLine("switch (typeID)\n{");
++prt.Indents;
derTypes.Sort((lhs, rhs) =>
GenContext.GetTypeID(lhs).CompareTo(GenContext.GetTypeID(rhs)));
foreach (var derTyX in derTypes)
{
prt.AppendFormatLine("// {0}",
derTyX.GetNameKey());
prt.AppendFormatLine("case {0}:",
GenContext.GetTypeID(derTyX));
}
++prt.Indents;
prt.AppendLine("return 1;");
--prt.Indents;
--prt.Indents;
prt.AppendLine("}");
}
prt.AppendLine("return 0;");
--prt.Indents;
prt.AppendLine("}");
prtDecl.Append(strDecl);
prtImpl.Append(prt.ToString());
}
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);
}
private void GenerateCompileUnits()
{
List <TypeCppCode> codeSorter = new List <TypeCppCode>(CodeMap.Values);
// 构建类型代码依赖关联
foreach (var cppCode in codeSorter)
{
foreach (string typeName in cppCode.DeclDependNames)
{
if (GetCodeFromMap(typeName, out var typeCode))
{
cppCode.DeclDependTypes.Add(typeCode);
}
}
cppCode.DeclDependNames = null;
foreach (string typeName in cppCode.ImplDependNames)
{
if (GetCodeFromMap(typeName, out var typeCode))
{
cppCode.ImplDependTypes.Add(typeCode);
}
}
cppCode.ImplDependNames = null;
}
CodeMap.Clear();
// 统计依赖计数
foreach (var cppCode in codeSorter)
{
// 预生成排序索引
cppCode.GetSortedID();
foreach (var typeCode in cppCode.DeclDependTypes)
{
++typeCode.DependCounter;
}
foreach (var typeCode in cppCode.ImplDependTypes)
{
++typeCode.DependCounter;
}
}
// 排序代码
codeSorter.Sort((x, y) =>
{
int cmp = x.GetSortedID().CompareTo(y.GetSortedID());
if (cmp == 0)
{
cmp = y.DependCounter.CompareTo(x.DependCounter);
}
return(cmp);
});
// 划分编译单元
foreach (var cppCode in codeSorter)
{
var unit = GetCompileUnit();
unit.AddCode(cppCode);
cppCode.CompileUnit = unit;
}
StringGen.GenDefineCode(
100,
out var strSplitMap,
out var strCodeMap,
out string strTypeDefs);
// 生成代码
HashSet <string> dependSet = new HashSet <string>();
foreach (var unit in CompileUnits)
{
// 防止包含自身
dependSet.Add(unit.Name);
unit.DeclCode.Append("#pragma once\n");
unit.DeclCode.Append("#include \"il2cpp.h\"\n");
foreach (var cppCode in unit.CodeList)
{
// 生成头文件依赖包含
foreach (var typeCode in cppCode.DeclDependTypes)
{
string unitName = typeCode.CompileUnit.Name;
if (!dependSet.Contains(unitName))
{
dependSet.Add(unitName);
unit.DeclCode.AppendFormat("#include \"{0}.h\"\n",
unitName);
}
}
}
foreach (var cppCode in unit.CodeList)
{
// 拼接声明代码
unit.DeclCode.Append(cppCode.DeclCode);
cppCode.DeclCode = null;
cppCode.DeclDependTypes = null;
}
foreach (var cppCode in unit.CodeList)
{
// 生成源文件依赖包含
foreach (var typeCode in cppCode.ImplDependTypes)
{
string unitName = typeCode.CompileUnit.Name;
if (!dependSet.Contains(unitName))
{
dependSet.Add(unitName);
unit.ImplCode.AppendFormat("#include \"{0}.h\"\n",
unitName);
}
}
// 生成字符串包含
if (strSplitMap != null &&
cppCode.DependStrings.Count > 0)
{
HashSet <int> strUnitSet = new HashSet <int>();
foreach (string str in cppCode.DependStrings)
{
strUnitSet.Add(strSplitMap[str]);
}
cppCode.DependStrings = null;
foreach (var strUnitId in strUnitSet)
{
string strUnit = "StringUnit_" + strUnitId;
unit.ImplCode.AppendFormat("#include \"{0}.h\"\n",
strUnit);
}
}
}
foreach (var cppCode in unit.CodeList)
{
// 拼接实现代码
unit.ImplCode.Append(cppCode.ImplCode);
cppCode.ImplCode = null;
cppCode.ImplDependTypes = null;
}
// 如果包含内容则追加头文件
if (unit.ImplCode.Length > 0)
{
unit.ImplCode.Insert(0, string.Format("#include \"{0}.h\"\n", unit.Name));
}
unit.CodeList = null;
dependSet.Clear();
}
if (strTypeDefs.Length > 0)
{
foreach (var item in strCodeMap)
{
var strUnit = new CppCompileUnit("StringUnit_" + item.Key);
CompileUnits.Add(strUnit);
strUnit.DeclCode.Append("#pragma once\n");
strUnit.DeclCode.Append("#include \"StringTypes.h\"\n");
strUnit.DeclCode.Append(item.Value);
}
var strTypeDefUnit = new CppCompileUnit("StringTypes");
CompileUnits.Add(strTypeDefUnit);
strTypeDefUnit.DeclCode.Append("#pragma once\n");
strTypeDefUnit.DeclCode.Append("#include \"il2cpp.h\"\n");
strTypeDefUnit.DeclCode.Append(strTypeDefs);
}
// 添加初始化静态变量的函数
if (StaticInitBody.Length > 0)
{
var firstUnit = CompileUnits[0];
string initDecl = "void il2cpp_InitStaticVars()";
firstUnit.DeclCode.Append(initDecl + ";\n");
CodePrinter staticInitPrt = new CodePrinter();
staticInitPrt.Append(StaticInitDecl.ToString());
staticInitPrt.Append(initDecl);
staticInitPrt.AppendLine("\n{");
++staticInitPrt.Indents;
staticInitPrt.Append(StaticInitBody.ToString());
--staticInitPrt.Indents;
staticInitPrt.AppendLine("}");
firstUnit.ImplCode.Append(staticInitPrt);
}
}
private TypeCppCode GenDeclCode(TypeX currType)
{
CodePrinter prt = new CodePrinter();
// 构造类型注释
prt.AppendFormatLine("// {0}",
currType.PrettyName());
// 构造类型结构体代码
string typeName;
string baseTypeName = null;
if (currType.BaseType != null &&
!currType.Def.IsValueType)
{
baseTypeName = currType.BaseType.GetCppName();
typeName = currType.GetCppName();
prt.AppendFormatLine("struct {0} : {1}\n{{",
typeName,
baseTypeName);
}
else if (currType.Def.ToTypeSig().IsObjectSig())
{
typeName = currType.GetCppName();
prt.AppendFormatLine("struct {0} : il2cppObject\n{{",
typeName);
}
else
{
Debug.Assert(
currType.Def.IsValueType ||
currType.Def.IsInterface);
typeName = currType.GetCppName();
prt.AppendFormatLine("struct {0}\n{{",
typeName);
}
// 添加代码映射
TypeCppCode cppCode = new TypeCppCode(typeName);
CodeMap.Add(typeName, cppCode);
// 添加基类型依赖
if (baseTypeName != null)
{
cppCode.DeclDependNames.Add(baseTypeName);
}
++prt.Indents;
// 构造结构体成员
List <FieldX> staticFields = new List <FieldX>();
foreach (var fldX in currType.Fields)
{
if (fldX.Def.IsStatic)
{
staticFields.Add(fldX);
continue;
}
string fieldTypeName = fldX.FieldType.GetCppName(TypeMgr);
prt.AppendFormatLine("// {0}\n{1} {2};",
fldX.PrettyName(),
fieldTypeName,
fldX.GetCppName());
// 添加字段类型依赖
if (fldX.FieldType.IsValueType)
{
cppCode.DeclDependNames.Add(fieldTypeName);
}
}
--prt.Indents;
prt.AppendLine("};");
// 构造装箱类型
if (currType.Def.IsValueType)
{
prt.AppendFormatLine("struct box_{0} : il2cppObject\n{{",
typeName);
++prt.Indents;
prt.AppendFormatLine("{0} value;",
currType.ToTypeSig().GetCppName(TypeMgr));
--prt.Indents;
prt.AppendLine("};");
}
// 构造静态字段全局变量
StringBuilder sbImpl = new StringBuilder();
foreach (var sfldX in staticFields)
{
string sfldTypeName = sfldX.FieldType.GetCppName(TypeMgr);
string sfldCppName = sfldX.GetCppName();
string sfldPrettyName = sfldX.PrettyName(true);
string sfldDef = string.Format("{0} {1};\n",
sfldTypeName,
sfldCppName);
prt.AppendFormat("// {0}\nextern {1}",
sfldPrettyName,
sfldDef);
sbImpl.AppendFormat("// {0}\n{1}",
sfldPrettyName,
sfldDef);
StaticInitDecl.Append("extern " + sfldDef);
StaticInitBody.AppendFormat("{0} = {1};\n",
sfldCppName,
sfldX.FieldType.GetInitValue(TypeMgr));
// 添加字段类型依赖
if (sfldX.FieldType.IsValueType)
{
cppCode.DeclDependNames.Add(sfldTypeName);
cppCode.ImplDependNames.Add(sfldTypeName);
}
}
// 静态构造函数防止多次调用的标记
if (currType.CctorMethod != null)
{
string onceName = string.Format("onceflag_{0}",
typeName);
string onceDef = string.Format("int8_t {0};\n",
onceName);
string locktidName = string.Format("locktid_{0}",
typeName);
string locktidDef = string.Format("uintptr_t {0};\n",
locktidName);
prt.Append("extern " + onceDef);
prt.Append("extern " + locktidDef);
sbImpl.Append(onceDef);
sbImpl.Append(locktidDef);
StaticInitDecl.Append("extern " + onceDef);
StaticInitDecl.Append("extern " + locktidDef);
StaticInitBody.AppendFormat("{0} = 0;\n",
onceName);
StaticInitBody.AppendFormat("{0} = 0;\n",
locktidName);
}
cppCode.DeclCode.Append(prt);
cppCode.ImplCode.Append(sbImpl);
return(cppCode);
}
private void GenIsTypeFunc(CodePrinter prtDecl, CodePrinter prtImpl, bool currIsObject)
{
if (CurrType.IsValueType || !CurrType.NeedGenIsType)
{
return;
}
CodePrinter prt = new CodePrinter();
prt.AppendFormat("uint8_t {0}(uint32_t typeID)",
GenContext.GetIsTypeFuncName(CurrType));
string strDecl = prt.ToString() + ";\n";
prt.AppendLine("\n{");
++prt.Indents;
var derivedRange = new List <TypeX>(CurrType.DerivedTypes);
derivedRange.Add(CurrType);
var derivedEnumTypes = CurrType.UnBoxedType?.DerivedEnumTypes;
if (derivedEnumTypes != null)
{
derivedRange.AddRange(derivedEnumTypes);
}
List <TypeX> derTypes = new List <TypeX>();
foreach (var derTyX in derivedRange)
{
// 跳过不分配在堆上的类型
if (!derTyX.IsInstantiated || derTyX.Def.IsInterface)
{
continue;
}
// 如果当前类型是 object, 则跳过值类型
if (currIsObject && derTyX.IsValueType)
{
continue;
}
derTypes.Add(derTyX);
}
if (derTypes.Count > 0)
{
prt.AppendLine("switch (typeID)\n{");
++prt.Indents;
derTypes.Sort((lhs, rhs) =>
GenContext.GetTypeID(lhs).CompareTo(GenContext.GetTypeID(rhs)));
foreach (var derTyX in derTypes)
{
prt.AppendFormatLine("// {0}",
Helper.EscapeString(derTyX.GetNameKey()));
prt.AppendFormatLine("case {0}:",
GenContext.GetTypeID(derTyX));
}
++prt.Indents;
prt.AppendLine("return 1;");
--prt.Indents;
--prt.Indents;
prt.AppendLine("}");
}
prt.AppendLine("return 0;");
--prt.Indents;
prt.AppendLine("}");
prtDecl.Append(strDecl);
prtImpl.Append(prt.ToString());
}
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);
}