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5453 lines (4920 loc) · 235 KB
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/*
Copyright 2017 YANG Huan (sy.yanghuan@gmail.com).
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.
*/
using CSharpLua.LuaAst;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Diagnostics.Contracts;
using System.Linq;
namespace CSharpLua {
public sealed partial class LuaSyntaxNodeTransform : CSharpSyntaxVisitor<LuaSyntaxNode> {
public const int kStringConstInlineCount = 27;
private sealed class MethodInfo {
public IMethodSymbol Symbol { get; }
public IList<LuaExpressionSyntax> RefOrOutParameters { get; }
public List<LuaIdentifierNameSyntax> InliningReturnVars { get; set; }
public bool IsInlining => InliningReturnVars != null;
public bool HasInlineGoto;
public bool HasYield;
public MethodInfo(IMethodSymbol symbol) {
Symbol = symbol;
RefOrOutParameters = Array.Empty<LuaExpressionSyntax>();
}
public MethodInfo(IMethodSymbol symbol, IList<LuaExpressionSyntax> refOrOutParameters) {
Symbol = symbol;
RefOrOutParameters = refOrOutParameters;
}
}
internal sealed class TypeDeclarationInfo {
public INamedTypeSymbol TypeSymbol { get; }
public LuaTypeDeclarationSyntax TypeDeclaration { get; }
public TypeDeclarationInfo(INamedTypeSymbol typeSymbol, LuaTypeDeclarationSyntax luaTypeDeclarationSyntax) {
TypeSymbol = typeSymbol;
TypeDeclaration = luaTypeDeclarationSyntax;
}
public bool CheckTypeName(INamedTypeSymbol getNameTypeSymbol, out LuaIdentifierNameSyntax name) {
if (getNameTypeSymbol.EQ(TypeSymbol)) {
TypeDeclaration.IsClassUsed = true;
name = LuaIdentifierNameSyntax.Class;
return true;
}
name = null;
return false;
}
}
private readonly LuaSyntaxGenerator generator_;
private SemanticModel semanticModel_;
private readonly Stack<LuaCompilationUnitSyntax> compilationUnits_ = new();
private readonly Stack<TypeDeclarationInfo> typeDeclarations_ = new();
private readonly Stack<LuaFunctionExpressionSyntax> functions_ = new();
private readonly Stack<MethodInfo> methodInfos_ = new();
private readonly Stack<LuaBlockSyntax> blocks_ = new();
private readonly Stack<LuaIfStatementSyntax> ifStatements_ = new();
private readonly Stack<LuaSwitchAdapterStatementSyntax> switches_ = new();
private int noImportTypeNameCounter_;
public bool IsNoImportTypeName => noImportTypeNameCounter_ > 0;
private int genericTypeCounter_;
public bool IsNoneGenericTypeCounter => genericTypeCounter_ == 0;
public void AddGenericTypeCounter() => ++genericTypeCounter_;
public void SubGenericTypeCounter() => --genericTypeCounter_;
private int metadataTypeNameCounter_;
public bool IsMetadataTypeName => metadataTypeNameCounter_ > 0;
private static readonly Dictionary<string, string> operatorTokenMap_ = new() {
["!="] = LuaSyntaxNode.Tokens.NotEquals,
["!"] = LuaSyntaxNode.Tokens.Not,
["&&"] = LuaSyntaxNode.Tokens.And,
["||"] = LuaSyntaxNode.Tokens.Or,
["??"] = LuaSyntaxNode.Tokens.Or,
["^"] = LuaSyntaxNode.Tokens.BitXor,
};
public LuaSyntaxNodeTransform(LuaSyntaxGenerator generator, SemanticModel semanticModel) {
generator_ = generator;
semanticModel_ = semanticModel;
}
private XmlMetaProvider XmlMetaProvider {
get {
return generator_.XmlMetaProvider;
}
}
private static string GetOperatorToken(SyntaxToken operatorToken) {
string token = operatorToken.ValueText;
return GetOperatorToken(token);
}
private static string GetOperatorToken(string token) {
return operatorTokenMap_.GetOrDefault(token, token);
}
private bool IsLuaClassic => generator_.Setting.IsClassic;
private bool IsLuaNewest => !IsLuaClassic;
private bool IsPreventDebug => generator_.Setting.IsPreventDebugObject;
private LuaCompilationUnitSyntax CurCompilationUnit {
get {
return compilationUnits_.Peek();
}
}
private LuaTypeDeclarationSyntax CurType {
get {
return typeDeclarations_.Peek().TypeDeclaration;
}
}
private INamedTypeSymbol CurTypeSymbol {
get {
return typeDeclarations_.Peek().TypeSymbol;
}
}
internal TypeDeclarationInfo CurTypeDeclaration {
get {
return typeDeclarations_.Count > 0 ? typeDeclarations_.Peek() : null;
}
}
private LuaFunctionExpressionSyntax CurFunction {
get {
return functions_.Peek();
}
}
private LuaFunctionExpressionSyntax CurFunctionOrNull {
get {
return functions_.Count > 0 ? functions_.Peek() : null;
}
}
private MethodInfo CurMethodInfoOrNull {
get {
return methodInfos_.Count > 0 ? methodInfos_.Peek() : null;
}
}
private void PushFunction(LuaFunctionExpressionSyntax function) {
functions_.Push(function);
++localMappingCounter_;
PushBlock(function.Body);
}
private void PopFunction() {
PopBlock();
var function = functions_.Pop();
--localMappingCounter_;
if (localMappingCounter_ == 0) {
localReservedNames_.Clear();
}
functionUpValues_.Remove(function);
Contract.Assert(function.TempCount == 0);
}
public void PushBlock(LuaBlockSyntax block) {
blocks_.Push(block);
}
public void PopBlock() {
var block = blocks_.Pop();
if (block.TempCount > 0) {
Contract.Assert(CurFunction.TempCount >= block.TempCount);
CurFunction.TempCount -= block.TempCount;
block.TempCount = 0;
}
}
private LuaBlockSyntax CurBlock {
get {
return blocks_.Peek();
}
}
private LuaBlockSyntax CurBlockOrNull {
get {
return blocks_.Count > 0 ? blocks_.Peek() : null;
}
}
private LuaBlockSyntax GetBlock(int index) {
if (index == 0) {
return CurBlock;
} else {
var en = blocks_.GetEnumerator();
while (index-- > 0) {
en.MoveNext();
}
return en.Current;
}
}
private LuaIdentifierNameSyntax GetTempIdentifier() {
int index = CurFunction.TempCount++;
string name = LuaSyntaxNode.TempIdentifiers.GetOrDefault(index) ?? $"__temp{index - LuaSyntaxNode.TempIdentifiers.Length}__";
++CurBlock.TempCount;
return name;
}
private void ReleaseTempIdentifiers(int prevTempCount, int prevReleaseCount) {
int count = CurFunction.TempCount - prevTempCount;
PopTempCount(count);
CurBlock.ReleaseCount = prevReleaseCount;
}
private void PopTempCount(int count) {
Contract.Assert(CurBlock.TempCount >= count && CurFunction.TempCount >= count);
CurBlock.TempCount -= count;
CurFunction.TempCount -= count;
}
private void AddReleaseTempIdentifier() {
CurBlock.ReleaseCount++;
}
private void ReleaseTempIdentifiers() {
if (CurBlock.ReleaseCount > 0) {
PopTempCount(CurBlock.ReleaseCount);
CurBlock.ReleaseCount = 0;
}
}
public LuaCompilationUnitSyntax VisitCompilationUnit(CompilationUnitSyntax node, bool isSingleFile = false) {
LuaCompilationUnitSyntax compilationUnit = new LuaCompilationUnitSyntax(node.SyntaxTree.FilePath, !isSingleFile);
compilationUnits_.Push(compilationUnit);
var statements = VisitTriviaAndNode(node, node.Members, false);
foreach (var statement in statements) {
if (statement is LuaTypeDeclarationSyntax typeDeclaration) {
var ns = new LuaNamespaceDeclarationSyntax(LuaIdentifierNameSyntax.Empty);
ns.AddStatement(typeDeclaration);
compilationUnit.AddStatement(ns);
} else {
compilationUnit.AddStatement(statement);
}
}
var attributes = BuildAttributes(node.AttributeLists);
generator_.WithAssemblyAttributes(attributes);
compilationUnits_.Pop();
return compilationUnit;
}
public override LuaSyntaxNode VisitNamespaceDeclaration(NamespaceDeclarationSyntax node) {
return BuildNamespaceDeclaration(node);
}
public override LuaSyntaxNode VisitFileScopedNamespaceDeclaration(FileScopedNamespaceDeclarationSyntax node) {
return BuildNamespaceDeclaration(node);
}
private LuaNamespaceDeclarationSyntax BuildNamespaceDeclaration(BaseNamespaceDeclarationSyntax node) {
var symbol = (INamespaceSymbol)semanticModel_.GetDeclaredSymbol(node);
bool isContained = node.Parent.IsKind(SyntaxKind.NamespaceDeclaration);
string name = generator_.GetNamespaceDefineName(symbol, node);
var namespaceDeclaration = new LuaNamespaceDeclarationSyntax(name, isContained);
var statements = VisitTriviaAndNode(node, node.Members);
namespaceDeclaration.AddStatements(statements);
return namespaceDeclaration;
}
private void BuildTypeMembers(LuaTypeDeclarationSyntax typeDeclaration, TypeDeclarationSyntax node) {
foreach (var nestedTypeDeclaration in node.Members.Where(i => i.Kind().IsTypeDeclaration())) {
var luaNestedTypeDeclaration = nestedTypeDeclaration.Accept<LuaTypeDeclarationSyntax>(this);
typeDeclaration.AddNestedTypeDeclaration(luaNestedTypeDeclaration);
}
foreach (var member in node.Members.Where(i => !i.Kind().IsTypeDeclaration())) {
member.Accept(this);
}
}
private void CheckBaseTypeGenericKind(ref bool hasExtendSelf, INamedTypeSymbol typeSymbol, BaseTypeSyntax baseType) {
if (!hasExtendSelf) {
if (baseType.IsKind(SyntaxKind.SimpleBaseType)) {
var baseNode = (SimpleBaseTypeSyntax)baseType;
if (baseNode.Type.IsKind(SyntaxKind.GenericName)) {
var baseGenericNameNode = (GenericNameSyntax)baseNode.Type;
var baseTypeSymbol = (INamedTypeSymbol)semanticModel_.GetTypeInfo(baseGenericNameNode).Type;
hasExtendSelf = Utility.IsExtendSelf(typeSymbol, baseTypeSymbol);
}
}
}
}
private LuaSpecialGenericType CheckSpecialGenericArgument(INamedTypeSymbol typeSymbol) {
var interfaceType = typeSymbol.AllInterfaces.FirstOrDefault(i => i.IsGenericIEnumerableType());
if (interfaceType != null) {
bool isBaseImplementation = typeSymbol.BaseType != null && typeSymbol.BaseType.AllInterfaces.Any(i => i.IsGenericIEnumerableType());
if (!isBaseImplementation) {
var argumentType = interfaceType.TypeArguments.First();
bool isLazy = argumentType.Kind != SymbolKind.TypeParameter && generator_.IsFromCode(argumentType);
var typeName = isLazy ? GetTypeNameWithoutImport(argumentType) : GetTypeName(argumentType);
return new LuaSpecialGenericType {
Name = LuaIdentifierNameSyntax.GenericT,
Value = typeName,
IsLazy = isLazy
};
}
}
return null;
}
private List<LuaIdentifierNameSyntax> GetBaseCopyFields(BaseTypeSyntax baseType) {
if (baseType != null) {
var fields = new List<LuaIdentifierNameSyntax>();
var semanticModel = generator_.GetSemanticModel(baseType.SyntaxTree);
var baseTypeSymbol = semanticModel.GetTypeInfo(baseType.Type).Type;
if (baseTypeSymbol.TypeKind == TypeKind.Class && baseTypeSymbol.SpecialType != SpecialType.System_Object) {
if (baseTypeSymbol.IsMemberExists("Finalize", true)) {
fields.Add(LuaIdentifierNameSyntax.__GC);
}
if (baseTypeSymbol.Is(generator_.SystemExceptionTypeSymbol)) {
fields.Add(LuaIdentifierNameSyntax.__ToString);
}
}
return fields;
}
return null;
}
private bool IsBaseTypeIgnore(ITypeSymbol symbol) {
if (symbol.SpecialType == SpecialType.System_Object) {
return true;
}
if (symbol.ContainingNamespace.IsRuntimeCompilerServices()) {
return true;
}
return false;
}
private void BuildBaseTypes(INamedTypeSymbol typeSymbol, LuaTypeDeclarationSyntax typeDeclaration, IEnumerable<BaseTypeSyntax> types, bool isPartial) {
bool hasExtendSelf = false;
var baseTypes = new List<LuaExpressionSyntax>();
foreach (var baseType in types) {
if (isPartial) {
semanticModel_ = generator_.GetSemanticModel(baseType.SyntaxTree);
}
var baseTypeSymbol = semanticModel_.GetTypeInfo(baseType.Type).Type;
if (!IsBaseTypeIgnore(baseTypeSymbol)) {
var baseTypeName = BuildInheritTypeName(baseTypeSymbol);
baseTypes.Add(baseTypeName);
CheckBaseTypeGenericKind(ref hasExtendSelf, typeSymbol, baseType);
}
}
if (baseTypes.Count > 0) {
if (typeSymbol.IsRecord) {
baseTypes.Add(GetRecordInterfaceTypeName(typeSymbol));
}
var genericArgument = CheckSpecialGenericArgument(typeSymbol);
var baseCopyFields = GetBaseCopyFields(types.FirstOrDefault());
typeDeclaration.AddBaseTypes(baseTypes, genericArgument, baseCopyFields);
if (hasExtendSelf && !generator_.IsExplicitStaticCtorExists(typeSymbol)) {
typeDeclaration.IsForceStaticCtor = true;
}
}
}
private void BuildTypeDeclaration(INamedTypeSymbol typeSymbol, TypeDeclarationSyntax node, LuaTypeDeclarationSyntax typeDeclaration) {
typeDeclarations_.Push(new TypeDeclarationInfo(typeSymbol, typeDeclaration));
var comments = BuildDocumentationComment(node);
typeDeclaration.AddDocument(comments);
var attributes = BuildAttributes(node.AttributeLists);
BuildTypeParameters(typeSymbol, node, typeDeclaration);
if (node.BaseList != null) {
BuildBaseTypes(typeSymbol, typeDeclaration, node.BaseList.Types, false);
}
CheckParameterCtor(typeSymbol, node, typeDeclaration);
BuildTypeMembers(typeDeclaration, node);
CheckTypeDeclaration(typeSymbol, typeDeclaration, attributes);
typeDeclarations_.Pop();
CurCompilationUnit.AddTypeDeclarationCount();
}
private void CheckTypeDeclaration(INamedTypeSymbol typeSymbol, LuaTypeDeclarationSyntax typeDeclaration, List<LuaExpressionSyntax> attributes) {
if (typeDeclaration.IsNoneCtors) {
var baseTypeSymbol = typeSymbol.BaseType;
if (baseTypeSymbol != null) {
var isNeedCallBase = typeDeclaration.IsInitStatementExists
? generator_.IsBaseExplicitCtorExists(baseTypeSymbol)
: generator_.HasStaticCtor(baseTypeSymbol);
if (isNeedCallBase) {
var baseCtorInvoke = BuildCallBaseConstructor(typeSymbol);
if (baseCtorInvoke != null) {
var function = new LuaConstructorAdapterExpressionSyntax();
function.AddParameter(LuaIdentifierNameSyntax.This);
function.AddStatement(baseCtorInvoke);
typeDeclaration.AddCtor(function, false);
}
}
}
} else if (typeSymbol.IsValueType && !typeSymbol.IsCombineImplicitlyCtor()) {
var function = new LuaConstructorAdapterExpressionSyntax();
function.AddParameter(LuaIdentifierNameSyntax.This);
typeDeclaration.AddCtor(function, true);
}
if (typeSymbol.IsRecord) {
LuaIdentifierNameSyntax recordBaseType = null;
if (typeSymbol.BaseType?.SpecialType == SpecialType.System_Object) {
recordBaseType = LuaIdentifierNameSyntax.RecordType;
} else if (typeSymbol.BaseType?.SpecialType == SpecialType.System_ValueType) {
recordBaseType = LuaIdentifierNameSyntax.RecordValueType;
}
if (recordBaseType != null) {
typeDeclaration.AddBaseTypes(recordBaseType.ArrayOf(GetRecordInterfaceTypeName(typeSymbol)), null, null);
}
BuildRecordMembers(typeSymbol, typeDeclaration);
}
if (typeDeclaration.IsIgnoreExport) {
generator_.AddIgnoreExportType(typeSymbol);
}
if (IsCurTypeExportMetadataAll || attributes.Count > 0 || typeDeclaration.IsExportMetadata) {
var data = new LuaTableExpression { IsSingleLine = true };
data.Add(new LuaStringLiteralExpressionSyntax(typeSymbol.Name));
data.Add(typeSymbol.GetMetaDataAttributeFlags());
data.AddRange(typeDeclaration.TypeParameterExpressions);
data.AddRange(attributes);
typeDeclaration.AddClassMetaData(data);
}
}
private void CheckParameterCtor(INamedTypeSymbol typeSymbol, TypeDeclarationSyntax node, LuaTypeDeclarationSyntax typeDeclaration) {
if (node.ParameterList != null) {
BuildParameterCtor(typeSymbol, typeDeclaration, node);
}
}
private void BuildParameterCtor(INamedTypeSymbol typeSymbol, LuaTypeDeclarationSyntax typeDeclaration, TypeDeclarationSyntax node) {
bool isRecord = node.IsKind(SyntaxKind.RecordDeclaration);
var parameterList = node!.ParameterList.Accept<LuaParameterListSyntax>(this);
var function = new LuaConstructorAdapterExpressionSyntax();
function.AddParameter(LuaIdentifierNameSyntax.This);
function.AddParameters(parameterList.Parameters);
typeDeclaration.AddCtor(function, false);
var ctor = typeSymbol.InstanceConstructors.First();
int index = 0;
foreach (var p in ctor.Parameters) {
if (isRecord || !typeSymbol.GetMembers($"<{p.Name}>P").IsEmpty) {
var parameterName = parameterList.Parameters[index];
function.AddStatement(LuaIdentifierNameSyntax.This.MemberAccess(parameterName).Assignment(parameterName));
var expression = GetFieldValueExpression(p.Type, null, out bool isLiteral, out _);
if (expression != null) {
typeDeclaration.AddField(parameterList.Parameters[index], expression, p.Type.IsImmutable() && isLiteral, false, false, true, null, false, false);
}
}
++index;
}
}
private void BuildRecordMembers(INamedTypeSymbol typeSymbol, LuaTypeDeclarationSyntax typeDeclaration) {
int skipCount = typeSymbol.IsReferenceType ? 1 : 0;
var properties = typeSymbol.GetMembers().OfType<IPropertySymbol>().Skip(skipCount);
var expressions = new List<LuaExpressionSyntax> { typeSymbol.Name.ToStringLiteral() };
expressions.AddRange(properties.Select(i => GetMemberName(i).ToStringLiteral()));
var function = new LuaFunctionExpressionSyntax();
function.AddStatement(new LuaReturnStatementSyntax(expressions));
typeDeclaration.AddMethod(LuaIdentifierNameSyntax.RecordMembers, function, false);
}
private INamedTypeSymbol VisitTypeDeclaration(INamedTypeSymbol typeSymbol, TypeDeclarationSyntax node, LuaTypeDeclarationSyntax typeDeclaration) {
if (node.Modifiers.IsPartial()) {
if (typeSymbol.DeclaringSyntaxReferences.Length > 1) {
generator_.AddPartialTypeDeclaration(typeSymbol, node, typeDeclaration, CurCompilationUnit);
typeDeclaration.IsPartialMark = true;
} else {
BuildTypeDeclaration(typeSymbol, node, typeDeclaration);
}
} else {
BuildTypeDeclaration(typeSymbol, node, typeDeclaration);
}
return typeSymbol;
}
internal void AcceptPartialType(PartialTypeDeclaration major, IEnumerable<PartialTypeDeclaration> typeDeclarations) {
compilationUnits_.Push(major.CompilationUnit);
typeDeclarations_.Push(new TypeDeclarationInfo(major.Symbol, major.TypeDeclaration));
List<LuaExpressionSyntax> attributes = new List<LuaExpressionSyntax>();
foreach (var typeDeclaration in typeDeclarations) {
semanticModel_ = generator_.GetSemanticModel(typeDeclaration.Node.SyntaxTree);
var document = BuildDocumentationComment(typeDeclaration.Node);
major.TypeDeclaration.AddDocument(document);
var expressions = BuildAttributes(typeDeclaration.Node.AttributeLists);
attributes.AddRange(expressions);
}
BuildTypeParameters(major.Symbol, major.Node, major.TypeDeclaration);
var baseTypes = new List<BaseTypeSyntax>();
var baseSymbols = new HashSet<ITypeSymbol>(SymbolEqualityComparer.Default);
foreach (var typeDeclaration in typeDeclarations) {
if (typeDeclaration.Node.BaseList != null) {
foreach (var baseTypeSyntax in typeDeclaration.Node.BaseList.Types) {
var semanticModel = generator_.GetSemanticModel(baseTypeSyntax.SyntaxTree);
var baseTypeSymbol = semanticModel.GetTypeInfo(baseTypeSyntax.Type).Type;
if (baseSymbols.Add(baseTypeSymbol)) {
baseTypes.Add(baseTypeSyntax);
}
}
}
}
if (baseTypes.Count > 0) {
if (baseTypes.Count > 1) {
var baseTypeIndex = baseTypes.FindIndex(generator_.IsBaseType);
if (baseTypeIndex > 0) {
var baseType = baseTypes[baseTypeIndex];
baseTypes.RemoveAt(baseTypeIndex);
baseTypes.Insert(0, baseType);
}
}
BuildBaseTypes(major.Symbol, major.TypeDeclaration, baseTypes, true);
}
foreach (var typeDeclaration in typeDeclarations) {
semanticModel_ = generator_.GetSemanticModel(typeDeclaration.Node.SyntaxTree);
BuildTypeMembers(major.TypeDeclaration, typeDeclaration.Node);
}
CheckTypeDeclaration(major.Symbol, major.TypeDeclaration, attributes);
typeDeclarations_.Pop();
compilationUnits_.Pop();
major.TypeDeclaration.IsPartialMark = false;
major.CompilationUnit.AddTypeDeclarationCount();
}
private void GetTypeDeclarationName(BaseTypeDeclarationSyntax typeDeclaration, out LuaIdentifierNameSyntax name, out INamedTypeSymbol typeSymbol) {
typeSymbol = semanticModel_.GetDeclaredSymbol(typeDeclaration);
name = generator_.GetTypeDeclarationName(typeSymbol);
}
public override LuaSyntaxNode VisitClassDeclaration(ClassDeclarationSyntax node) {
GetTypeDeclarationName(node, out var name, out var typeSymbol);
LuaClassDeclarationSyntax classDeclaration = new LuaClassDeclarationSyntax(name);
VisitTypeDeclaration(typeSymbol, node, classDeclaration);
return classDeclaration;
}
public override LuaSyntaxNode VisitStructDeclaration(StructDeclarationSyntax node) {
GetTypeDeclarationName(node, out var name, out var typeSymbol);
LuaStructDeclarationSyntax structDeclaration = new LuaStructDeclarationSyntax(name);
VisitTypeDeclaration(typeSymbol, node, structDeclaration);
return structDeclaration;
}
public override LuaSyntaxNode VisitInterfaceDeclaration(InterfaceDeclarationSyntax node) {
GetTypeDeclarationName(node, out var name, out var typeSymbol);
var interfaceDeclaration = new LuaInterfaceDeclarationSyntax(name);
VisitTypeDeclaration(typeSymbol, node, interfaceDeclaration);
return interfaceDeclaration;
}
private void VisitEnumDeclaration(INamedTypeSymbol typeSymbol, EnumDeclarationSyntax node, LuaEnumDeclarationSyntax enumDeclaration) {
typeDeclarations_.Push(new TypeDeclarationInfo(typeSymbol, enumDeclaration));
var document = BuildDocumentationComment(node);
enumDeclaration.AddDocument(document);
var attributes = BuildAttributes(node.AttributeLists);
foreach (var member in node.Members) {
var statement = member.Accept<LuaKeyValueTableItemSyntax>(this);
enumDeclaration.Add(statement);
}
CheckTypeDeclaration(typeSymbol, enumDeclaration, attributes);
typeDeclarations_.Pop();
generator_.AddEnumDeclaration(typeSymbol, enumDeclaration);
}
public override LuaSyntaxNode VisitEnumDeclaration(EnumDeclarationSyntax node) {
GetTypeDeclarationName(node, out var name, out var typeSymbol);
LuaEnumDeclarationSyntax enumDeclaration = new LuaEnumDeclarationSyntax(typeSymbol.ToString(), name, CurCompilationUnit);
VisitEnumDeclaration(typeSymbol, node, enumDeclaration);
return enumDeclaration;
}
public override LuaSyntaxNode VisitRecordDeclaration(RecordDeclarationSyntax node) {
GetTypeDeclarationName(node, out var name, out var typeSymbol);
LuaClassDeclarationSyntax classDeclaration = new LuaClassDeclarationSyntax(name);
VisitTypeDeclaration(typeSymbol, node, classDeclaration);
return classDeclaration;
}
public override LuaSyntaxNode VisitDelegateDeclaration(DelegateDeclarationSyntax node) {
return LuaStatementSyntax.Empty;
}
private void VisitYield(IMethodSymbol symbol, LuaFunctionExpressionSyntax function) {
var returnTypeSymbol = (INamedTypeSymbol)symbol.ReturnType;
string name = LuaSyntaxNode.Tokens.Yield + returnTypeSymbol.Name;
var invokeExpression = LuaIdentifierNameSyntax.System.MemberAccess(name).Invocation();
var wrapFunction = new LuaFunctionExpressionSyntax();
if (symbol.IsAsync) {
wrapFunction.AddParameter(LuaIdentifierNameSyntax.Async);
}
var parameters = function.ParameterList.Parameters;
wrapFunction.ParameterList.Parameters.AddRange(parameters);
wrapFunction.AddStatements(function.Body.Statements);
invokeExpression.AddArgument(wrapFunction);
if (returnTypeSymbol.IsGenericType) {
var typeName = returnTypeSymbol.TypeArguments.First();
var expression = GetTypeName(typeName);
invokeExpression.AddArgument(expression);
} else {
invokeExpression.AddArgument(LuaIdentifierNameSyntax.Object);
}
invokeExpression.ArgumentList.Arguments.AddRange(parameters);
var returnStatement = new LuaReturnStatementSyntax(invokeExpression);
function.Body.Statements.Clear();
function.AddStatement(returnStatement);
}
private void VisitAsync(bool returnsVoid, LuaFunctionExpressionSyntax function) {
var invokeExpression = LuaIdentifierNameSyntax.System.MemberAccess(LuaIdentifierNameSyntax.Async).Invocation();
var wrapFunction = new LuaFunctionExpressionSyntax();
var parameters = function.ParameterList.Parameters;
wrapFunction.AddParameter(LuaIdentifierNameSyntax.Async);
wrapFunction.ParameterList.Parameters.AddRange(parameters);
wrapFunction.AddStatements(function.Body.Statements);
invokeExpression.AddArgument(wrapFunction);
invokeExpression.AddArgument(returnsVoid ? LuaIdentifierNameSyntax.True : LuaIdentifierNameSyntax.Nil);
invokeExpression.ArgumentList.Arguments.AddRange(parameters);
function.Body.Statements.Clear();
if (returnsVoid) {
function.AddStatement(invokeExpression);
} else {
function.AddStatement(new LuaReturnStatementSyntax(invokeExpression));
}
}
private sealed class MethodDeclarationResult {
public IMethodSymbol Symbol;
public LuaFunctionExpressionSyntax Function;
public bool IsPrivate;
public LuaIdentifierNameSyntax Name;
public LuaDocumentStatement Document;
public List<LuaExpressionSyntax> Attributes;
public bool IsIgnore => Document is {HasIgnoreAttribute: true};
public bool IsMetadata => Document is {HasMetadataAttribute: true};
}
private void AddMethodMetaData(MethodDeclarationResult result, bool isMoreThanLocalVariables = false) {
var table = new LuaTableExpression { IsSingleLine = true };
table.Add(new LuaStringLiteralExpressionSyntax(result.Symbol.Name));
table.Add(result.Symbol.GetMetaDataAttributeFlags());
if (isMoreThanLocalVariables) {
table.Add(LuaIdentifierNameSyntax.MoreManyLocalVarTempTable.MemberAccess(result.Name));
} else {
table.Add(result.Name);
}
var parameters = result.Symbol.Parameters.Select(i => GetTypeNameOfMetadata(i.Type)).ToList();
if (!result.Symbol.ReturnsVoid) {
parameters.Add(GetTypeNameOfMetadata(result.Symbol.ReturnType));
}
if (result.Symbol.IsGenericMethod) {
var function = new LuaFunctionExpressionSyntax();
function.AddParameters(result.Symbol.TypeParameters.Select(i => (LuaIdentifierNameSyntax)i.Name));
function.AddStatement(new LuaReturnStatementSyntax(parameters));
table.Add(function);
} else {
table.AddRange(parameters);
}
table.AddRange(result.Attributes);
CurType.AddMethodMetaData(table);
}
private MethodDeclarationResult BuildMethodDeclaration(
CSharpSyntaxNode node,
SyntaxList<AttributeListSyntax> attributeLists,
ParameterListSyntax parameterList,
TypeParameterListSyntax typeParameterList,
BlockSyntax body,
ArrowExpressionClauseSyntax expressionBody) {
IMethodSymbol symbol = (IMethodSymbol)semanticModel_.GetDeclaredSymbol(node);
var refOrOutParameters = new List<LuaExpressionSyntax>();
MethodInfo methodInfo = new MethodInfo(symbol, refOrOutParameters);
methodInfos_.Push(methodInfo);
var methodName = symbol.MethodKind == MethodKind.LocalFunction
? GetLocalMethodName(symbol, node)
: GetMemberName(symbol);
LuaFunctionExpressionSyntax function = new LuaFunctionExpressionSyntax();
PushFunction(function);
var document = BuildDocumentationComment(node);
bool isPrivate = symbol.IsPrivate() && symbol.ExplicitInterfaceImplementations.IsEmpty;
if (!symbol.IsStatic && symbol.MethodKind != MethodKind.LocalFunction) {
function.AddParameter(LuaIdentifierNameSyntax.This);
if (isPrivate) {
if (generator_.IsForcePublicSymbol(symbol) || generator_.IsMonoBehaviourSpecialMethod(symbol)) {
isPrivate = false;
}
}
} else if (symbol.IsMainEntryPoint()) {
isPrivate = false;
generator_.SetMainEntryPoint(symbol, node);
} else if (isPrivate && generator_.IsForcePublicSymbol(symbol)) {
isPrivate = false;
}
var attributes = BuildAttributes(attributeLists);
foreach (var parameterNode in parameterList.Parameters) {
var parameter = parameterNode.Accept<LuaIdentifierNameSyntax>(this);
function.AddParameter(parameter);
if (parameterNode.Modifiers.IsOutOrRef()) {
refOrOutParameters.Add(parameter);
} else if (parameterNode.Modifiers.IsParams() && generator_.HasParamsAttribute(symbol)) {
function.ParameterList.Parameters[^1] = LuaSyntaxNode.Tokens.Params;
}
}
if (typeParameterList != null) {
var typeParameters = typeParameterList.Accept<LuaParameterListSyntax>(this);
function.AddParameters(typeParameters.Parameters);
}
if (body != null) {
var block = body.Accept<LuaBlockSyntax>(this);
function.AddStatements(block.Statements);
} else {
var expression = expressionBody.AcceptExpression(this);
if (symbol.ReturnsVoid) {
if (expression is LuaIdentifierNameSyntax or LuaMemberAccessExpressionSyntax) {
} else {
function.AddStatement(expression);
}
} else {
var returnStatement = new LuaReturnStatementSyntax(expression);
returnStatement.Expressions.AddRange(refOrOutParameters);
function.AddStatement(returnStatement);
}
}
if (methodInfo.HasYield) {
VisitYield(symbol, function);
} else if (symbol.IsAsync) {
VisitAsync(symbol.ReturnsVoid, function);
} else {
if (symbol.ReturnsVoid && refOrOutParameters.Count > 0) {
function.AddStatement(new LuaReturnStatementSyntax(refOrOutParameters));
}
}
PopFunction();
methodInfos_.Pop();
return new MethodDeclarationResult {
Symbol = symbol,
Name = methodName,
Function = function,
IsPrivate = isPrivate,
Document = document,
Attributes = attributes,
};
}
private bool IsCurTypeExportMetadataAll {
get {
return generator_.Setting.IsExportMetadata || CurType.IsExportMetadataAll;
}
}
private bool IsCurTypeSerializable {
get {
return IsCurTypeExportMetadataAll || CurTypeSymbol.IsSerializable;
}
}
private bool IsExportMethodDeclaration(BaseMethodDeclarationSyntax node) {
return (node.Body != null || node.ExpressionBody != null) && !generator_.HasCSharpLuaAttribute(node, LuaDocumentStatement.AttributeFlags.Ignore);
}
public override LuaSyntaxNode VisitMethodDeclaration(MethodDeclarationSyntax node) {
if (IsExportMethodDeclaration(node)) {
var result = BuildMethodDeclaration(node, node.AttributeLists, node.ParameterList, node.TypeParameterList, node.Body, node.ExpressionBody);
bool isMoreThanLocalVariables = IsMoreThanLocalVariables(result.Symbol);
CurType.AddMethod(result.Name, result.Function, result.IsPrivate, result.Document, isMoreThanLocalVariables, result.Symbol.IsInterfaceDefaultMethod());
if (IsCurTypeExportMetadataAll || result.Attributes.Count > 0 || result.IsMetadata) {
AddMethodMetaData(result, isMoreThanLocalVariables);
}
return result.Function;
}
return base.VisitMethodDeclaration(node);
}
private LuaExpressionSyntax BuildEnumNoConstantDefaultValue(ITypeSymbol typeSymbol) {
var typeName = GetTypeName(typeSymbol);
var field = typeSymbol.GetMembers().OfType<IFieldSymbol>().FirstOrDefault(i => i.ConstantValue.Equals(0));
if (field != null) {
return typeName.MemberAccess(field.Name);
}
return typeName.Invocation(LuaNumberLiteralExpressionSyntax.Zero);
}
private LuaExpressionSyntax GetPredefinedValueTypeDefaultValue(ITypeSymbol typeSymbol) {
switch (typeSymbol.SpecialType) {
case SpecialType.None: {
if (typeSymbol.TypeKind == TypeKind.Enum) {
if (!generator_.IsConstantEnum(typeSymbol)) {
return BuildEnumNoConstantDefaultValue(typeSymbol);
}
return LuaNumberLiteralExpressionSyntax.Zero;
}
if (typeSymbol.IsTimeSpanType()) {
return BuildDefaultValue(LuaIdentifierNameSyntax.TimeSpan);
}
return null;
}
case SpecialType.System_Boolean: {
return new LuaIdentifierLiteralExpressionSyntax(LuaIdentifierNameSyntax.False);
}
case SpecialType.System_Char: {
return new LuaCharacterLiteralExpression(default);
}
case SpecialType.System_SByte:
case SpecialType.System_Byte:
case SpecialType.System_Int16:
case SpecialType.System_UInt16:
case SpecialType.System_Int32:
case SpecialType.System_UInt32:
case SpecialType.System_Int64:
case SpecialType.System_UInt64: {
return LuaNumberLiteralExpressionSyntax.Zero;
}
case SpecialType.System_Single:
case SpecialType.System_Double: {
return LuaNumberLiteralExpressionSyntax.ZeroFloat;
}
case SpecialType.System_DateTime: {
return BuildDefaultValue(LuaIdentifierNameSyntax.DateTime);
}
default:
return null;
}
}
private static LuaInvocationExpressionSyntax BuildDefaultValue(LuaExpressionSyntax typeExpression) {
return new(LuaIdentifierNameSyntax.SystemDefault, typeExpression);
}
private void AddFieldMetaData(IFieldSymbol symbol, LuaIdentifierNameSyntax fieldName, List<LuaExpressionSyntax> attributes) {
var data = new LuaTableExpression { IsSingleLine = true };
data.Add(new LuaStringLiteralExpressionSyntax(symbol.Name));
data.Add(symbol.GetMetaDataAttributeFlags());
data.Add(GetTypeNameOfMetadata(symbol.Type));
if (generator_.IsNeedRefactorName(symbol)) {
data.Add(new LuaStringLiteralExpressionSyntax(fieldName));
}
data.AddRange(attributes);
CurType.AddFieldMetaData(data);
}
private void VisitBaseFieldDeclarationSyntax(BaseFieldDeclarationSyntax node) {
if (!node.Modifiers.IsConst()) {
bool isStatic = node.Modifiers.IsStatic();
bool isReadOnly = node.Modifiers.IsReadOnly();
var attributes = BuildAttributes(node.AttributeLists);
var type = node.Declaration.Type;
ITypeSymbol typeSymbol = (ITypeSymbol)semanticModel_.GetSymbolInfo(type).Symbol;
bool isImmutable = typeSymbol.IsImmutable();
foreach (var variable in node.Declaration.Variables) {
var variableSymbol = semanticModel_.GetDeclaredSymbol(variable);
if (variableSymbol.IsAbstract || variableSymbol.IsExtern || generator_.HasCSharpLuaAttribute(variableSymbol.GetDeclaringSyntaxNode(), LuaDocumentStatement.AttributeFlags.Ignore)) {
continue;
}
if (node.IsKind(SyntaxKind.EventFieldDeclaration)) {
var eventSymbol = (IEventSymbol)variableSymbol;
if (!IsEventField(eventSymbol)) {
var eventName = GetMemberName(eventSymbol);
var innerName = AddInnerName(eventSymbol);
LuaExpressionSyntax valueExpression = GetFieldValueExpression(typeSymbol, variable.Initializer?.Value, out bool valueIsLiteral, out var statements);
LuaExpressionSyntax typeExpression = null;
if (isStatic) {
typeExpression = GetTypeName(eventSymbol.ContainingType);
}
var (add, remove) = CurType.AddEvent(eventName, innerName, valueExpression, isImmutable && valueIsLiteral, isStatic, eventSymbol.IsPrivate(), typeExpression, statements);
if (attributes.Count > 0 || generator_.HasMetadataAttribute(variableSymbol)) {
AddPropertyOrEventMetaData(variableSymbol, new PropertyMethodResult(add), new PropertyMethodResult(remove), null, attributes);
}
continue;
}
}
bool isPrivate = generator_.IsPrivate(variableSymbol);
var fieldName = GetMemberName(variableSymbol);
var value = variable.Initializer?.Value;
bool isMoreThanLocalVariables = IsMoreThanLocalVariables(variableSymbol);
bool isMoreThanUpValueStaticInit = false;
if (IsLuaClassic && value != null && !isImmutable && isStatic && (isPrivate || isReadOnly)) {
isMoreThanUpValueStaticInit = IsMoreThanUpValueStaticInitField(variableSymbol);
}
AddField(fieldName, typeSymbol, value, isImmutable, isStatic, isPrivate, isReadOnly, isMoreThanLocalVariables, isMoreThanUpValueStaticInit);
if (IsCurTypeSerializable || attributes.Count > 0 || generator_.HasMetadataAttribute(variableSymbol)) {
if (variableSymbol.Kind == SymbolKind.Field) {
AddFieldMetaData((IFieldSymbol)variableSymbol, fieldName, attributes);
} else {
AddPropertyOrEventMetaData(variableSymbol, null, null, fieldName, attributes);
}
}
}
} else {
var type = node.Declaration.Type;
ITypeSymbol typeSymbol = (ITypeSymbol)semanticModel_.GetSymbolInfo(type).Symbol;
if (typeSymbol.SpecialType == SpecialType.System_String) {
foreach (var variable in node.Declaration.Variables) {
var constValue = semanticModel_.GetConstantValue(variable.Initializer.Value);
Contract.Assert(constValue.HasValue);
string v = (string)constValue.Value;
if (v?.Length > kStringConstInlineCount) {
var variableSymbol = semanticModel_.GetDeclaredSymbol(variable);
bool isPrivate = generator_.IsPrivate(variableSymbol);
var fieldName = GetMemberName(variableSymbol);
bool isMoreThanLocalVariables = IsMoreThanLocalVariables(variableSymbol);
AddField(fieldName, typeSymbol, variable.Initializer.Value, true, true, isPrivate, true, isMoreThanLocalVariables);
}
}
}
}
}
public override LuaSyntaxNode VisitFieldDeclaration(FieldDeclarationSyntax node) {
VisitBaseFieldDeclarationSyntax(node);
return base.VisitFieldDeclaration(node);
}
private LuaExpressionSyntax GetFieldValueExpression(ITypeSymbol typeSymbol, ExpressionSyntax expression, out bool valueIsLiteral, out List<LuaStatementSyntax> statements) {
LuaExpressionSyntax valueExpression = null;
valueIsLiteral = false;
statements = null;
if (expression != null && !expression.IsKind(SyntaxKind.NullLiteralExpression)) {
var function = new LuaFunctionExpressionSyntax();
PushFunction(function);
valueExpression = VisitExpression(expression);
PopFunction();
if (function.Body.Statements.Count > 0) {
statements = function.Body.Statements;
}
LuaExpressionSyntax v = valueExpression;
if (valueExpression is LuaPrefixUnaryExpressionSyntax prefixUnaryExpression) {
v = prefixUnaryExpression.Operand;
}
valueIsLiteral = v is LuaLiteralExpressionSyntax;
}
if (valueExpression == null) {
if (typeSymbol.IsMaybeValueType() && !typeSymbol.IsNullableType()) {
var defaultValue = GetPredefinedValueTypeDefaultValue(typeSymbol);
if (defaultValue != null) {
valueExpression = defaultValue;
valueIsLiteral = defaultValue is LuaLiteralExpressionSyntax;
} else {
valueExpression = GetDefaultValueExpression(typeSymbol);
}
}
}
return valueExpression;
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