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2777 lines (2527 loc) · 127 KB
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/*
Copyright 2017 YANG Huan ([email protected]).
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 System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Diagnostics.Contracts;
using System.Linq;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis;
using CSharpLua.LuaAst;
namespace CSharpLua {
public sealed partial class LuaSyntaxNodeTransform : CSharpSyntaxVisitor<LuaSyntaxNode> {
private const int kStringConstInlineCount = 15;
private sealed class MethodInfo {
public IMethodSymbol Symbol { get; }
public IList<LuaExpressionSyntax> RefOrOutParameters { get; }
public MethodInfo(IMethodSymbol symbol) {
Symbol = symbol;
RefOrOutParameters = Array.Empty<LuaExpressionSyntax>();
}
public MethodInfo(IMethodSymbol symbol, IList<LuaExpressionSyntax> refOrOutParameters) {
Symbol = symbol;
RefOrOutParameters = refOrOutParameters;
}
}
private LuaSyntaxGenerator generator_;
private SemanticModel semanticModel_;
private Stack<LuaCompilationUnitSyntax> compilationUnits_ = new Stack<LuaCompilationUnitSyntax>();
private Stack<LuaTypeDeclarationSyntax> typeDeclarations_ = new Stack<LuaTypeDeclarationSyntax>();
private Stack<LuaFunctionExpressionSyntax> functions_ = new Stack<LuaFunctionExpressionSyntax>();
private Stack<MethodInfo> methodInfos_ = new Stack<MethodInfo>();
private Stack<LuaBlockSyntax> blocks_ = new Stack<LuaBlockSyntax>();
private Stack<LuaIfStatementSyntax> ifStatements_ = new Stack<LuaIfStatementSyntax>();
private Stack<LuaSwitchAdapterStatementSyntax> switchs_ = new Stack<LuaSwitchAdapterStatementSyntax>();
private int baseNameNodeCounter_;
private static readonly Dictionary<string, string> operatorTokenMapps_ = new Dictionary<string, string>() {
["!="] = 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 operatorTokenMapps_.GetOrDefault(token, token);
}
private static string GetOperatorToken(string token) {
return operatorTokenMapps_.GetOrDefault(token, token);
}
private bool IsLuaNewest {
get {
return generator_.Setting.IsNewest;
}
}
private LuaCompilationUnitSyntax CurCompilationUnit {
get {
return compilationUnits_.Peek();
}
}
private LuaTypeDeclarationSyntax CurType {
get {
return typeDeclarations_.Peek();
}
}
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_;
}
private void PopFunction() {
functions_.Pop();
--localMappingCounter_;
if (localMappingCounter_ == 0) {
localReservedNames_.Clear();
}
}
private LuaBlockSyntax CurBlock {
get {
return blocks_.Peek();
}
}
public override LuaSyntaxNode VisitCompilationUnit(CompilationUnitSyntax node) {
LuaCompilationUnitSyntax compilationUnit = new LuaCompilationUnitSyntax(node.SyntaxTree.FilePath);
compilationUnits_.Push(compilationUnit);
var statements = VisitTriviaAndNode(node, node.Members, false);
foreach (LuaStatementSyntax statement in statements) {
if (statement is LuaTypeDeclarationSyntax typeeDeclaration) {
var ns = new LuaNamespaceDeclarationSyntax(LuaIdentifierNameSyntax.Empty);
ns.AddStatement(typeeDeclaration);
compilationUnit.AddStatement(ns);
} else {
compilationUnit.AddStatement(statement);
}
}
compilationUnits_.Pop();
return compilationUnit;
}
public override LuaSyntaxNode VisitNamespaceDeclaration(NamespaceDeclarationSyntax node) {
var symbol = semanticModel_.GetDeclaredSymbol(node);
bool isContained = node.Parent.IsKind(SyntaxKind.NamespaceDeclaration);
LuaIdentifierNameSyntax name = new LuaIdentifierNameSyntax(isContained ? symbol.Name : symbol.ToString());
LuaNamespaceDeclarationSyntax namespaceDeclaration = new LuaNamespaceDeclarationSyntax(name, isContained);
var statements = VisitTriviaAndNode(node, node.Members);
namespaceDeclaration.AddStatements(statements.Cast<LuaStatementSyntax>());
return namespaceDeclaration;
}
private void BuildTypeMembers(LuaTypeDeclarationSyntax typeDeclaration, TypeDeclarationSyntax node) {
if (!node.IsKind(SyntaxKind.InterfaceDeclaration)) {
foreach (var member in node.Members) {
var newMember = member.Accept(this);
SyntaxKind kind = member.Kind();
if (kind >= SyntaxKind.ClassDeclaration && kind <= SyntaxKind.EnumDeclaration) {
typeDeclaration.AddStatement((LuaTypeDeclarationSyntax)newMember);
}
}
}
}
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 LuaSpeaicalGenericType CheckSpeaicalGenericArgument(INamedTypeSymbol typeSymbol) {
var interfaceType = typeSymbol.Interfaces.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();
var typeName = GetTypeName(argumentType);
return new LuaSpeaicalGenericType() {
Name = LuaIdentifierNameSyntax.GenericT,
Value = typeName,
IsLazy = argumentType.Kind != SymbolKind.TypeParameter && argumentType.IsFromCode(),
};
}
}
return null;
}
private void BuildTypeDeclaration(INamedTypeSymbol typeSymbol, TypeDeclarationSyntax node, LuaTypeDeclarationSyntax typeDeclaration) {
typeDeclarations_.Push(typeDeclaration);
var comments = BuildDocumentationComment(node);
typeDeclaration.AddDocumentComments(comments);
var attributes = BuildAttributes(node.AttributeLists);
typeDeclaration.AddClassAttributes(attributes);
BuildTypeParameters(typeSymbol, node, typeDeclaration);
if (node.BaseList != null) {
bool hasExtendSelf = false;
List<LuaExpressionSyntax> baseTypes = new List<LuaExpressionSyntax>();
foreach (var baseType in node.BaseList.Types) {
var baseTypeName = BuildBaseTypeName(baseType);
baseTypes.Add(baseTypeName);
CheckBaseTypeGenericKind(ref hasExtendSelf, typeSymbol, baseType);
}
var genericArgument = CheckSpeaicalGenericArgument(typeSymbol);
typeDeclaration.AddBaseTypes(baseTypes, genericArgument);
if (hasExtendSelf && !typeSymbol.HasStaticCtor()) {
typeDeclaration.SetStaticCtorEmpty();
}
}
BuildTypeMembers(typeDeclaration, node);
CheckTypeDeclarationCtos(typeSymbol, typeDeclaration);
typeDeclarations_.Pop();
CurCompilationUnit.AddTypeDeclarationCount();
}
private void CheckTypeDeclarationCtos(INamedTypeSymbol typeSymbol, LuaTypeDeclarationSyntax typeDeclaration) {
if (typeDeclaration.IsNoneCtros) {
var bseTypeSymbol = typeSymbol.BaseType;
if (bseTypeSymbol != null) {
bool isNeedCallBase;
if (typeDeclaration.IsInitStatementExists) {
isNeedCallBase = !bseTypeSymbol.Constructors.IsEmpty;
} else {
isNeedCallBase = generator_.HasStaticCtor(bseTypeSymbol) || bseTypeSymbol.Constructors.Count() > 1;
}
if (isNeedCallBase) {
var baseCtorInvoke = BuildCallBaseConstructor(typeSymbol);
if (baseCtorInvoke != null) {
LuaConstructorAdapterExpressionSyntax function = new LuaConstructorAdapterExpressionSyntax();
function.AddParameter(LuaIdentifierNameSyntax.This);
function.AddStatement(baseCtorInvoke);
typeDeclaration.AddCtor(function, false);
}
}
}
} else if (typeSymbol.IsValueType) {
LuaConstructorAdapterExpressionSyntax function = new LuaConstructorAdapterExpressionSyntax();
function.AddParameter(LuaIdentifierNameSyntax.This);
typeDeclaration.AddCtor(function, true);
}
if (typeSymbol.IsValueType) {
TryAddStructDefaultMethod(typeSymbol, typeDeclaration);
}
}
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, List<PartialTypeDeclaration> typeDeclarations) {
compilationUnits_.Push(major.CompilationUnit);
typeDeclarations_.Push(major.TypeDeclaration);
List<LuaExpressionSyntax> attributes = new List<LuaExpressionSyntax>();
foreach (var typeDeclaration in typeDeclarations) {
semanticModel_ = generator_.GetSemanticModel(typeDeclaration.Node.SyntaxTree);
var comments = BuildDocumentationComment(typeDeclaration.Node);
major.TypeDeclaration.AddDocumentComments(comments);
var expressions = BuildAttributes(typeDeclaration.Node.AttributeLists);
attributes.AddRange(expressions);
}
major.TypeDeclaration.AddClassAttributes(attributes);
BuildTypeParameters(major.Symbol, major.Node, major.TypeDeclaration);
List<BaseTypeSyntax> baseTypes = new List<BaseTypeSyntax>();
HashSet<ITypeSymbol> baseSymbols = new HashSet<ITypeSymbol>();
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);
}
}
bool hasExtendSelf = false;
List<LuaExpressionSyntax> baseTypeExpressions = new List<LuaExpressionSyntax>();
foreach (var baseType in baseTypes) {
semanticModel_ = generator_.GetSemanticModel(baseType.SyntaxTree);
var baseTypeName = BuildBaseTypeName(baseType);
baseTypeExpressions.Add(baseTypeName);
CheckBaseTypeGenericKind(ref hasExtendSelf, major.Symbol, baseType);
}
var genericArgument = CheckSpeaicalGenericArgument(major.Symbol);
major.TypeDeclaration.AddBaseTypes(baseTypeExpressions, genericArgument);
if (hasExtendSelf && !major.Symbol.HasStaticCtor()) {
major.TypeDeclaration.SetStaticCtorEmpty();
}
}
foreach (var typeDeclaration in typeDeclarations) {
semanticModel_ = generator_.GetSemanticModel(typeDeclaration.Node.SyntaxTree);
BuildTypeMembers(major.TypeDeclaration, typeDeclaration.Node);
}
CheckTypeDeclarationCtos(major.Symbol, major.TypeDeclaration);
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);
LuaInterfaceDeclarationSyntax interfaceDeclaration = new LuaInterfaceDeclarationSyntax(name);
var symbol = VisitTypeDeclaration(typeSymbol, node, interfaceDeclaration);
return interfaceDeclaration;
}
public override LuaSyntaxNode VisitEnumDeclaration(EnumDeclarationSyntax node) {
GetTypeDeclarationName(node, out var name, out var typeSymbol);
LuaEnumDeclarationSyntax enumDeclaration = new LuaEnumDeclarationSyntax(typeSymbol.ToString(), name, CurCompilationUnit);
typeDeclarations_.Push(enumDeclaration);
var comments = BuildDocumentationComment(node);
enumDeclaration.AddDocumentComments(comments);
foreach (var member in node.Members) {
var statement = (LuaKeyValueTableItemSyntax)member.Accept(this);
enumDeclaration.Add(statement);
}
typeDeclarations_.Pop();
generator_.AddEnumDeclaration(enumDeclaration);
return enumDeclaration;
}
public override LuaSyntaxNode VisitDelegateDeclaration(DelegateDeclarationSyntax node) {
return LuaStatementSyntax.Empty;
}
private void VisitYield(TypeSyntax returnType, LuaFunctionExpressionSyntax function) {
Contract.Assert(function.HasYield);
var retrurnTypeSymbol = semanticModel_.GetTypeInfo(returnType).Type;
string name = LuaSyntaxNode.Tokens.Yield + retrurnTypeSymbol.Name;
LuaMemberAccessExpressionSyntax memberAccess = new LuaMemberAccessExpressionSyntax(LuaIdentifierNameSyntax.System, new LuaIdentifierNameSyntax(name));
LuaInvocationExpressionSyntax invokeExpression = new LuaInvocationExpressionSyntax(memberAccess);
LuaFunctionExpressionSyntax wrapFunction = new LuaFunctionExpressionSyntax();
var parameters = function.ParameterList.Parameters;
wrapFunction.ParameterList.Parameters.AddRange(parameters);
wrapFunction.AddStatements(function.Body.Statements);
invokeExpression.AddArgument(wrapFunction);
if (returnType.IsKind(SyntaxKind.GenericName)) {
var genericNameSyntax = (GenericNameSyntax)returnType;
var typeName = genericNameSyntax.TypeArgumentList.Arguments.First();
var expression = (LuaExpressionSyntax)typeName.Accept(this);
invokeExpression.AddArgument(expression);
} else {
invokeExpression.AddArgument(LuaIdentifierNameSyntax.Object);
}
invokeExpression.ArgumentList.Arguments.AddRange(parameters.Select(i => new LuaArgumentSyntax(i.Identifier)));
LuaReturnStatementSyntax returnStatement = new LuaReturnStatementSyntax(invokeExpression);
function.Body.Statements.Clear();
function.AddStatement(returnStatement);
}
private sealed class MethodDeclarationResult {
public IMethodSymbol Symbol;
public LuaFunctionExpressionSyntax Function;
public bool IsPrivate;
public LuaIdentifierNameSyntax Name;
public List<LuaStatementSyntax> Comments;
}
private MethodDeclarationResult BuildMethodDeclaration(CSharpSyntaxNode node, SyntaxList<AttributeListSyntax> attributeLists, ParameterListSyntax parameterList, TypeParameterListSyntax typeParameterList, BlockSyntax body, ArrowExpressionClauseSyntax expressionBody, TypeSyntax returnType) {
IMethodSymbol symbol = (IMethodSymbol)semanticModel_.GetDeclaredSymbol(node);
List<LuaExpressionSyntax> refOrOutParameters = new List<LuaExpressionSyntax>();
MethodInfo methodInfo = new MethodInfo(symbol, refOrOutParameters);
methodInfos_.Push(methodInfo);
LuaIdentifierNameSyntax methodName;
if (symbol.MethodKind == MethodKind.LocalFunction) {
methodName = new LuaIdentifierNameSyntax(symbol.Name);
CheckLocalVariableName(ref methodName, node);
} else {
methodName = GetMemberName(symbol);
}
LuaFunctionExpressionSyntax function = new LuaFunctionExpressionSyntax();
PushFunction(function);
var comments = BuildDocumentationComment(node);
bool isPrivate = symbol.IsPrivate() && symbol.ExplicitInterfaceImplementations.IsEmpty;
if (!symbol.IsStatic) {
function.AddParameter(LuaIdentifierNameSyntax.This);
} else if (symbol.IsMainEntryPoint()) {
isPrivate = false;
bool success = generator_.SetMainEntryPoint(symbol);
if (!success) {
throw new CompilationErrorException(node, "has more than one entry point");
}
}
if (!symbol.IsPrivate()) {
var attributes = BuildAttributes(attributeLists);
CurType.AddMethodAttributes(methodName, attributes);
}
foreach (var parameterNode in parameterList.Parameters) {
var parameter = (LuaParameterSyntax)parameterNode.Accept(this);
function.AddParameter(parameter);
if (parameterNode.Modifiers.IsOutOrRef()) {
refOrOutParameters.Add(parameter.Identifier);
}
}
if (typeParameterList != null) {
var typeParameters = (LuaParameterListSyntax)typeParameterList.Accept(this);
function.AddParameters(typeParameters.Parameters);
}
if (body != null) {
LuaBlockSyntax block = (LuaBlockSyntax)body.Accept(this);
function.AddStatements(block.Statements);
} else {
blocks_.Push(function.Body);
var expression = (LuaExpressionSyntax)expressionBody.Accept(this);
blocks_.Pop();
function.AddStatement(new LuaReturnStatementSyntax(expression));
}
if (function.HasYield) {
VisitYield(returnType, function);
} else {
if (symbol.ReturnsVoid && refOrOutParameters.Count > 0) {
var returnStatement = new LuaMultipleReturnStatementSyntax();
returnStatement.Expressions.AddRange(refOrOutParameters);
function.AddStatement(returnStatement);
}
}
PopFunction();
methodInfos_.Pop();
return new MethodDeclarationResult {
Symbol = symbol,
Name = methodName,
Function = function,
IsPrivate = isPrivate,
Comments = comments,
};
}
public override LuaSyntaxNode VisitMethodDeclaration(MethodDeclarationSyntax node) {
if (!node.Modifiers.IsAbstract()) {
var result = BuildMethodDeclaration(node, node.AttributeLists, node.ParameterList, node.TypeParameterList, node.Body, node.ExpressionBody, node.ReturnType);
CurType.AddMethod(result.Name, result.Function, result.IsPrivate, result.Symbol.IsStaticLazy(), result.Comments);
return result.Function;
}
return base.VisitMethodDeclaration(node);
}
private static LuaExpressionSyntax GetPredefinedValueTypeDefaultValue(ITypeSymbol typeSymbol) {
switch (typeSymbol.SpecialType) {
case SpecialType.None: {
if (typeSymbol.TypeKind == TypeKind.Enum) {
return LuaIdentifierLiteralExpressionSyntax.Zero;
} else 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(char));
}
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 LuaIdentifierLiteralExpressionSyntax.Zero;
}
case SpecialType.System_Single:
case SpecialType.System_Double: {
return LuaIdentifierLiteralExpressionSyntax.ZeroFloat;
}
case SpecialType.System_DateTime: {
return BuildDefaultValue(LuaIdentifierNameSyntax.DateTime);
}
default:
return null;
}
}
private LuaIdentifierNameSyntax GetTempIdentifier(SyntaxNode node) {
int index = CurFunction.TempIndex++;
string name = LuaSyntaxNode.TempIdentifiers.GetOrDefault(index);
if (name == null) {
throw new CompilationErrorException(node, $"Your code is startling,{LuaSyntaxNode.TempIdentifiers.Length} temporary variables is not enough");
}
return new LuaIdentifierNameSyntax(name);
}
private static LuaInvocationExpressionSyntax BuildDefaultValue(LuaExpressionSyntax typeExpression) {
return new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.SystemDefault, typeExpression);
}
private void VisitBaseFieldDeclarationSyntax(BaseFieldDeclarationSyntax node) {
if (!node.Modifiers.IsConst()) {
bool isStatic = node.Modifiers.IsStatic();
bool isPrivate = node.Modifiers.IsPrivate();
bool isReadOnly = node.Modifiers.IsReadOnly();
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 (node.IsKind(SyntaxKind.EventFieldDeclaration)) {
var eventSymbol = (IEventSymbol)variableSymbol;
if (!IsEventFiled(eventSymbol)) {
var eventName = GetMemberName(eventSymbol);
var innerName = AddInnerName(eventSymbol);
LuaExpressionSyntax valueExpression = GetFieldValueExpression(type, typeSymbol, variable.Initializer?.Value, out bool valueIsLiteral);
CurType.AddEvent(eventName, innerName, valueExpression, isImmutable && valueIsLiteral, isStatic, isPrivate);
continue;
}
} else {
if (!isStatic && isPrivate) {
string name = variable.Identifier.ValueText;
bool success = CheckFieldNameOfProtobufnet(ref name, variableSymbol.ContainingType);
if (success) {
AddField(new LuaIdentifierNameSyntax(name), typeSymbol, type, variable.Initializer?.Value, isImmutable, isStatic, isPrivate, isReadOnly, node.AttributeLists);
continue;
}
}
}
LuaIdentifierNameSyntax fieldName = GetMemberName(variableSymbol);
AddField(fieldName, typeSymbol, type, variable.Initializer?.Value, isImmutable, isStatic, isPrivate, isReadOnly, node.AttributeLists);
}
} else {
bool isPrivate = node.Modifiers.IsPrivate();
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 value = (LiteralExpressionSyntax)variable.Initializer.Value;
if (value.Token.ValueText.Length > kStringConstInlineCount) {
var variableSymbol = semanticModel_.GetDeclaredSymbol(variable);
LuaIdentifierNameSyntax fieldName = GetMemberName(variableSymbol);
AddField(fieldName, typeSymbol, type, value, true, true, isPrivate, true, node.AttributeLists);
}
}
}
}
}
public override LuaSyntaxNode VisitFieldDeclaration(FieldDeclarationSyntax node) {
VisitBaseFieldDeclarationSyntax(node);
return base.VisitFieldDeclaration(node);
}
private LuaExpressionSyntax GetFieldValueExpression(TypeSyntax type, ITypeSymbol typeSymbol, ExpressionSyntax expression, out bool valueIsLiteral) {
LuaExpressionSyntax valueExpression = null;
valueIsLiteral = false;
if (expression != null) {
valueExpression = (LuaExpressionSyntax)expression.Accept(this);
valueIsLiteral = expression is LiteralExpressionSyntax;
}
if (valueExpression == null) {
if (typeSymbol.IsValueType && !typeSymbol.IsNullableType()) {
LuaExpressionSyntax defalutValue = GetPredefinedValueTypeDefaultValue(typeSymbol);
if (defalutValue != null) {
valueExpression = defalutValue;
valueIsLiteral = true;
} else {
valueExpression = GetDefaultValueExpression(typeSymbol);
}
}
}
return valueExpression;
}
private void AddField(LuaIdentifierNameSyntax name, ITypeSymbol typeSymbol, TypeSyntax type, ExpressionSyntax expression, bool isImmutable, bool isStatic, bool isPrivate, bool isReadOnly, SyntaxList<AttributeListSyntax> attributeLists) {
if (!(isStatic && isPrivate)) {
var attributes = BuildAttributes(attributeLists);
CurType.AddFieldAttributes(name, attributes);
}
LuaExpressionSyntax valueExpression = GetFieldValueExpression(type, typeSymbol, expression, out bool valueIsLiteral);
CurType.AddField(name, valueExpression, isImmutable && valueIsLiteral, isStatic, isPrivate, isReadOnly);
}
public override LuaSyntaxNode VisitPropertyDeclaration(PropertyDeclarationSyntax node) {
if (!node.Modifiers.IsAbstract()) {
var symbol = semanticModel_.GetDeclaredSymbol(node);
bool isStatic = symbol.IsStatic;
bool isPrivate = symbol.IsPrivate();
bool hasGet = false;
bool hasSet = false;
if (node.AccessorList != null) {
LuaIdentifierNameSyntax propertyName = GetMemberName(symbol);
foreach (var accessor in node.AccessorList.Accessors) {
if (accessor.Body != null || accessor.ExpressionBody != null) {
bool isGet = accessor.IsKind(SyntaxKind.GetAccessorDeclaration);
LuaFunctionExpressionSyntax functionExpression = new LuaFunctionExpressionSyntax();
if (!isStatic) {
functionExpression.AddParameter(LuaIdentifierNameSyntax.This);
}
PushFunction(functionExpression);
if (accessor.Body != null) {
var block = (LuaBlockSyntax)accessor.Body.Accept(this);
functionExpression.AddStatements(block.Statements);
} else {
var bodyExpression = (LuaExpressionSyntax)accessor.ExpressionBody.Accept(this);
if (isGet) {
functionExpression.AddStatement(new LuaReturnStatementSyntax(bodyExpression));
} else {
functionExpression.AddStatement(bodyExpression);
}
}
PopFunction();
LuaPropertyOrEventIdentifierNameSyntax name = new LuaPropertyOrEventIdentifierNameSyntax(true, propertyName);
CurType.AddMethod(name, functionExpression, isPrivate);
if (isGet) {
Contract.Assert(!hasGet);
hasGet = true;
} else {
Contract.Assert(!hasSet);
functionExpression.AddParameter(LuaIdentifierNameSyntax.Value);
name.IsGetOrAdd = false;
hasSet = true;
}
if (!isPrivate) {
var attributes = BuildAttributes(accessor.AttributeLists);
CurType.AddMethodAttributes(name, attributes);
}
}
}
} else {
Contract.Assert(!hasGet);
LuaIdentifierNameSyntax propertyName = GetMemberName(symbol);
LuaPropertyOrEventIdentifierNameSyntax name = new LuaPropertyOrEventIdentifierNameSyntax(true, propertyName);
LuaFunctionExpressionSyntax functionExpression = new LuaFunctionExpressionSyntax();
PushFunction(functionExpression);
blocks_.Push(functionExpression.Body);
var expression = (LuaExpressionSyntax)node.ExpressionBody.Accept(this);
blocks_.Pop();
PopFunction();
if (!isStatic) {
functionExpression.AddParameter(LuaIdentifierNameSyntax.This);
}
LuaReturnStatementSyntax returnStatement = new LuaReturnStatementSyntax(expression);
functionExpression.AddStatement(returnStatement);
CurType.AddMethod(name, functionExpression, isPrivate);
hasGet = true;
}
if (!hasGet && !hasSet) {
ITypeSymbol typeSymbol = symbol.Type;
bool isImmutable = typeSymbol.IsImmutable();
if (isStatic) {
LuaIdentifierNameSyntax fieldName = GetMemberName(symbol);
bool isReadOnly = IsReadOnlyProperty(node);
AddField(fieldName, typeSymbol, node.Type, node.Initializer?.Value, isImmutable, isStatic, isPrivate, isReadOnly, node.AttributeLists);
} else {
bool isField = IsPropertyField(semanticModel_.GetDeclaredSymbol(node));
if (isField) {
LuaIdentifierNameSyntax fieldName = GetMemberName(symbol);
bool isReadOnly = IsReadOnlyProperty(node);
AddField(fieldName, typeSymbol, node.Type, node.Initializer?.Value, isImmutable, isStatic, isPrivate, isReadOnly, node.AttributeLists);
} else {
LuaIdentifierNameSyntax propertyName = GetMemberName(symbol);
LuaIdentifierNameSyntax innerName = AddInnerName(symbol);
LuaExpressionSyntax valueExpression = GetFieldValueExpression(node.Type, typeSymbol, node.Initializer?.Value, out bool valueIsLiteral);
CurType.AddProperty(propertyName, innerName, valueExpression, isImmutable && valueIsLiteral, isStatic, isPrivate);
}
}
} else {
if (!isPrivate) {
var attributes = BuildAttributes(node.AttributeLists);
CurType.AddFieldAttributes(new LuaIdentifierNameSyntax(node.Identifier.ValueText), attributes);
}
}
}
return base.VisitPropertyDeclaration(node);
}
private bool IsReadOnlyProperty(PropertyDeclarationSyntax node) {
return node.AccessorList.Accessors.Count == 1 && node.AccessorList.Accessors[0].Body == null;
}
public override LuaSyntaxNode VisitEventDeclaration(EventDeclarationSyntax node) {
if (!node.Modifiers.IsAbstract()) {
var symbol = semanticModel_.GetDeclaredSymbol(node);
bool isStatic = symbol.IsStatic;
bool isPrivate = symbol.IsPrivate();
LuaIdentifierNameSyntax eventName = GetMemberName(symbol);
foreach (var accessor in node.AccessorList.Accessors) {
LuaFunctionExpressionSyntax functionExpression = new LuaFunctionExpressionSyntax();
if (!isStatic) {
functionExpression.AddParameter(LuaIdentifierNameSyntax.This);
}
functionExpression.AddParameter(LuaIdentifierNameSyntax.Value);
PushFunction(functionExpression);
var block = (LuaBlockSyntax)accessor.Body.Accept(this);
PopFunction();
functionExpression.AddStatements(block.Statements);
LuaPropertyOrEventIdentifierNameSyntax name = new LuaPropertyOrEventIdentifierNameSyntax(false, eventName);
CurType.AddMethod(name, functionExpression, isPrivate);
if (accessor.IsKind(SyntaxKind.RemoveAccessorDeclaration)) {
name.IsGetOrAdd = false;
}
if (!isPrivate) {
var attributes = BuildAttributes(accessor.AttributeLists);
CurType.AddMethodAttributes(name, attributes);
}
}
}
return base.VisitEventDeclaration(node);
}
public override LuaSyntaxNode VisitEventFieldDeclaration(EventFieldDeclarationSyntax node) {
VisitBaseFieldDeclarationSyntax(node);
return base.VisitEventFieldDeclaration(node);
}
public override LuaSyntaxNode VisitEnumMemberDeclaration(EnumMemberDeclarationSyntax node) {
IFieldSymbol symbol = semanticModel_.GetDeclaredSymbol(node);
Contract.Assert(symbol.HasConstantValue);
LuaIdentifierNameSyntax identifier = new LuaIdentifierNameSyntax(node.Identifier.ValueText);
var value = new LuaIdentifierLiteralExpressionSyntax(symbol.ConstantValue.ToString());
return new LuaKeyValueTableItemSyntax(new LuaTableLiteralKeySyntax(identifier), value);
}
public override LuaSyntaxNode VisitIndexerDeclaration(IndexerDeclarationSyntax node) {
if (!node.Modifiers.IsAbstract()) {
var symbol = semanticModel_.GetDeclaredSymbol(node);
bool isPrivate = symbol.IsPrivate();
LuaIdentifierNameSyntax indexName = GetMemberName(symbol);
var parameterList = (LuaParameterListSyntax)node.ParameterList.Accept(this);
void Fill(Action<LuaFunctionExpressionSyntax, LuaPropertyOrEventIdentifierNameSyntax> action) {
LuaFunctionExpressionSyntax function = new LuaFunctionExpressionSyntax();
function.AddParameter(LuaIdentifierNameSyntax.This);
function.ParameterList.Parameters.AddRange(parameterList.Parameters);
LuaPropertyOrEventIdentifierNameSyntax name = new LuaPropertyOrEventIdentifierNameSyntax(true, indexName);
PushFunction(function);
action(function, name);
PopFunction();
CurType.AddMethod(name, function, isPrivate);
}
if (node.AccessorList != null) {
foreach (var accessor in node.AccessorList.Accessors) {
Fill((function, name) => {
bool isGet = accessor.IsKind(SyntaxKind.GetAccessorDeclaration);
if (accessor.Body != null) {
var block = (LuaBlockSyntax)accessor.Body.Accept(this);
function.AddStatements(block.Statements);
} else {
var bodyExpression = (LuaExpressionSyntax)accessor.ExpressionBody.Accept(this);
if (isGet) {
function.AddStatement(new LuaReturnStatementSyntax(bodyExpression));
} else {
function.AddStatement(bodyExpression);
}
}
if (!isGet) {
function.AddParameter(LuaIdentifierNameSyntax.Value);
name.IsGetOrAdd = false;
}
});
}
} else {
Fill((function, name) => {
var bodyExpression = (LuaExpressionSyntax)node.ExpressionBody.Accept(this);
function.AddStatement(bodyExpression);
});
}
}
return base.VisitIndexerDeclaration(node);
}
public override LuaSyntaxNode VisitBracketedParameterList(BracketedParameterListSyntax node) {
return BuildParameterList(node.Parameters);
}
public override LuaSyntaxNode VisitParameterList(ParameterListSyntax node) {
return BuildParameterList(node.Parameters);
}
private LuaSyntaxNode BuildParameterList(SeparatedSyntaxList<ParameterSyntax> parameters) {
LuaParameterListSyntax parameterList = new LuaParameterListSyntax();
foreach (var parameter in parameters) {
var newNode = (LuaParameterSyntax)parameter.Accept(this);
parameterList.Parameters.Add(newNode);
}
return parameterList;
}
public override LuaSyntaxNode VisitParameter(ParameterSyntax node) {
LuaIdentifierNameSyntax identifier = new LuaIdentifierNameSyntax(node.Identifier.ValueText);
CheckLocalVariableName(ref identifier, node);
return new LuaParameterSyntax(identifier);
}
private sealed class BlockCommonNode : IComparable<BlockCommonNode> {
public SyntaxTrivia SyntaxTrivia { get; }
public CSharpSyntaxNode SyntaxNode { get; }
public FileLinePositionSpan LineSpan { get; }
public BlockCommonNode(SyntaxTrivia syntaxTrivia) {
SyntaxTrivia = syntaxTrivia;
LineSpan = syntaxTrivia.SyntaxTree.GetLineSpan(syntaxTrivia.Span);
}
public BlockCommonNode(CSharpSyntaxNode statement) {
SyntaxNode = statement;
LineSpan = statement.SyntaxTree.GetLineSpan(statement.Span);
}
public int CompareTo(BlockCommonNode other) {
return LineSpan.StartLinePosition.CompareTo(other.LineSpan.StartLinePosition);
}
public bool Contains(BlockCommonNode other) {
var otherLineSpan = other.LineSpan;
return otherLineSpan.StartLinePosition > LineSpan.StartLinePosition
&& otherLineSpan.EndLinePosition < LineSpan.EndLinePosition;
}
public LuaBlankLinesStatement CheckBlankLine(ref int lastLine) {
LuaBlankLinesStatement statement = null;
if (lastLine != -1) {
int count = LineSpan.StartLinePosition.Line - lastLine - 1;
if (count > 0) {
statement = new LuaBlankLinesStatement(count);
}
}
lastLine = LineSpan.EndLinePosition.Line;
return statement;
}
public LuaSyntaxNode Visit(LuaSyntaxNodeTransform transfor) {
const int kCommentCharCount = 2;
if (SyntaxNode != null) {
try {
var node = SyntaxNode.Accept(transfor);
if (node == null) {
throw new InvalidOperationException();
}
return node;
} catch (CompilationErrorException e) {
if (e.SyntaxNode == null) {
throw new CompilationErrorException(SyntaxNode, e.Message);
}
throw e;
} catch (Exception e) {
throw new Exception($"Compiler has a bug, thanks to commit issue at https://github.com/yanghuan/CSharp.lua/issue, {SyntaxNode.GetLocationString()}", e);
}
} else {
string content = SyntaxTrivia.ToString();
switch (SyntaxTrivia.Kind()) {
case SyntaxKind.SingleLineCommentTrivia: {
string commentContent = content.Substring(kCommentCharCount);
return new LuaShortCommentStatement(commentContent);
}
case SyntaxKind.MultiLineCommentTrivia: {
string commentContent = content.Substring(kCommentCharCount, content.Length - kCommentCharCount - kCommentCharCount);
if (CheckInsertLuaCodeTemplate(commentContent, out var codeStatement)) {
return codeStatement;
}
return new LuaLongCommentStatement(commentContent);
}
case SyntaxKind.RegionDirectiveTrivia:
case SyntaxKind.EndRegionDirectiveTrivia: {
return new LuaShortCommentStatement(content);
}
default:
throw new InvalidOperationException();
}
}
}
private bool CheckInsertLuaCodeTemplate(string commentContent, out LuaStatementListSyntax statementList) {
statementList = null;
char openBracket = LuaSyntaxNode.Tokens.OpenBracket[0];
int index = commentContent.IndexOf(openBracket);
if (index != -1) {
char equals = LuaSyntaxNode.Tokens.Equals[0];
int count = 0;
++index;
while (commentContent[index] == equals) {
++index;
++count;
}
if (commentContent[index] == openBracket) {
string closeToken = LuaSyntaxNode.Tokens.CloseBracket + new string(equals, count) + LuaSyntaxNode.Tokens.CloseBracket;
int begin = index + 1;
int end = commentContent.IndexOf(closeToken, begin);
if (end != -1) {
int start = begin + closeToken.Length;
string code = commentContent.Substring(start, end - start);
string[] codes = code.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
var statements = codes.Select(i => i.Trim()).Where(i => !string.IsNullOrEmpty(i)).Select(i => new LuaIdentifierNameSyntax(i).ToStatement());
statementList = new LuaStatementListSyntax();
statementList.Statements.AddRange(statements);
return true;
}
}
}
return false;
}
}
private IEnumerable<LuaSyntaxNode> VisitTriviaAndNode(SyntaxNode rootNode, IEnumerable<CSharpSyntaxNode> nodes, bool isCheckBlank = true) {
var syntaxTrivias = rootNode.DescendantTrivia().Where(i => i.IsExportSyntaxTrivia(rootNode));
var syntaxTriviaNodes = syntaxTrivias.Select(i => new BlockCommonNode(i));
List<BlockCommonNode> list = nodes.Select(i => new BlockCommonNode(i)).ToList();
bool hasComments = false;
foreach (var comment in syntaxTriviaNodes) {
bool isContains = list.Any(i => i.Contains(comment));
if (!isContains) {