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1275 lines (1125 loc) · 56.4 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.Diagnostics.Contracts;
using System.Linq;
using System.Text;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis;
using CSharpLua.LuaAst;
namespace CSharpLua {
public sealed partial class LuaSyntaxNodeTransform {
private Stack<LuaIdentifierNameSyntax> conditionalTemps_ = new Stack<LuaIdentifierNameSyntax>();
public override LuaSyntaxNode VisitObjectCreationExpression(ObjectCreationExpressionSyntax node) {
var constExpression = GetConstExpression(node);
if (constExpression != null) {
return constExpression;
}
var symbol = (IMethodSymbol)semanticModel_.GetSymbolInfo(node).Symbol;
LuaExpressionSyntax creationExpression;
if (symbol != null) {
string codeTemplate = XmlMetaProvider.GetMethodCodeTemplate(symbol);
if (codeTemplate != null) {
creationExpression = BuildCodeTemplateExpression(codeTemplate, null, node.ArgumentList.Arguments.Select(i => i.Expression), symbol.TypeArguments);
} else if (node.Type.IsKind(SyntaxKind.NullableType)) {
Contract.Assert(node.ArgumentList.Arguments.Count == 1);
var argument = node.ArgumentList.Arguments.First();
return argument.Expression.Accept(this);
} else if (symbol.ContainingType.IsTupleType) {
var expressions = node.ArgumentList.Arguments.Select(i => (LuaExpressionSyntax)i.Expression.Accept(this));
creationExpression = BuildValueTupleCreateExpression(expressions);
} else {
var expression = (LuaExpressionSyntax)node.Type.Accept(this);
var invokeExpression = BuildObjectCreationInvocation(symbol, expression);
if (node.ArgumentList != null) {
var refOrOutArguments = new List<RefOrOutArgument>();
var arguments = BuildArgumentList(symbol, symbol.Parameters, node.ArgumentList, refOrOutArguments);
TryRemoveNilArgumentsAtTail(symbol, arguments);
invokeExpression.AddArguments(arguments);
if (refOrOutArguments.Count > 0) {
creationExpression = BuildInvokeRefOrOut(node, invokeExpression, refOrOutArguments);
} else {
creationExpression = invokeExpression;
}
} else {
creationExpression = invokeExpression;
}
}
} else {
var type = semanticModel_.GetSymbolInfo(node.Type).Symbol;
if (type != null && type.Kind == SymbolKind.NamedType) {
var nameType = (INamedTypeSymbol)type;
if (nameType.IsDelegateType()) {
Contract.Assert(node.ArgumentList.Arguments.Count == 1);
var argument = node.ArgumentList.Arguments.First();
return argument.Expression.Accept(this);
}
}
Contract.Assert(!node.ArgumentList.Arguments.Any());
var expression = (LuaExpressionSyntax)node.Type.Accept(this);
creationExpression = new LuaInvocationExpressionSyntax(expression);
}
if (node.Initializer == null) {
return creationExpression;
} else {
var temp = GetTempIdentifier();
CurBlock.AddStatement(new LuaLocalVariableDeclaratorSyntax(temp, creationExpression));
FillObjectInitializerExpression(temp, node.Initializer);
return !node.Parent.IsKind(SyntaxKind.ExpressionStatement) ? temp : LuaExpressionSyntax.EmptyExpression;
}
}
private void FillObjectInitializerExpression(LuaIdentifierNameSyntax temp, InitializerExpressionSyntax node) {
foreach (var expression in node.Expressions) {
if (expression.IsKind(SyntaxKind.SimpleAssignmentExpression)) {
var assignment = (AssignmentExpressionSyntax)expression;
var left = assignment.Left.Accept(this);
var right = (LuaExpressionSyntax)assignment.Right.Accept(this);
if (assignment.Left.IsKind(SyntaxKind.ImplicitElementAccess)) {
var argumentList = (LuaArgumentListSyntax)left;
LuaIdentifierNameSyntax methodName = LuaSyntaxNode.Tokens.Set;
var memberAccess = new LuaMemberAccessExpressionSyntax(temp, methodName, true);
var invocation = new LuaInvocationExpressionSyntax(memberAccess);
invocation.ArgumentList.Arguments.AddRange(argumentList.Arguments);
invocation.AddArgument(right);
CurBlock.AddStatement(invocation);
} else {
var memberAccess = BuildFieldOrPropertyMemberAccessExpression(temp, (LuaExpressionSyntax)left, false);
var assignmentExpression = BuildLuaSimpleAssignmentExpression(memberAccess, right);
CurBlock.AddStatement(assignmentExpression);
}
} else {
var symbol = semanticModel_.GetCollectionInitializerSymbolInfo(expression).Symbol;
var name = GetMemberName(symbol);
var memberAccess = new LuaMemberAccessExpressionSyntax(temp, name, true);
var invocation = new LuaInvocationExpressionSyntax(memberAccess);
var block = new LuaBlockSyntax();
PushBlock(block);
if (expression.IsKind(SyntaxKind.ComplexElementInitializerExpression)) {
var initializer = (InitializerExpressionSyntax)expression;
foreach (var expressionNode in initializer.Expressions) {
var argumnet = (LuaExpressionSyntax)expressionNode.Accept(this);
invocation.AddArgument(argumnet);
}
} else {
var value = (LuaExpressionSyntax)expression.Accept(this);
invocation.AddArgument(value);
}
PopBlock();
CurBlock.Statements.AddRange(block.Statements);
CurBlock.AddStatement(invocation);
}
}
}
public override LuaSyntaxNode VisitAnonymousObjectMemberDeclarator(AnonymousObjectMemberDeclaratorSyntax node) {
LuaIdentifierNameSyntax name;
var expression = (LuaExpressionSyntax)node.Expression.Accept(this);
if (node.NameEquals != null) {
name = (LuaIdentifierNameSyntax)node.NameEquals.Accept(this);
} else {
name = (LuaIdentifierNameSyntax)expression;
}
return new LuaKeyValueTableItemSyntax(name, expression);
}
public override LuaSyntaxNode VisitAnonymousObjectCreationExpression(AnonymousObjectCreationExpressionSyntax node) {
LuaTableExpression table = new LuaTableExpression();
foreach (var initializer in node.Initializers) {
var item = (LuaKeyValueTableItemSyntax)initializer.Accept(this);
table.Items.Add(item);
}
return new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.AnonymousTypeCreate, table);
}
public override LuaSyntaxNode VisitInitializerExpression(InitializerExpressionSyntax node) {
Contract.Assert(node.IsKind(SyntaxKind.ArrayInitializerExpression));
var arrayType = (IArrayTypeSymbol)semanticModel_.GetTypeInfo(node).ConvertedType;
return BuildArrayTypeFromInitializer(arrayType, node);
}
public override LuaSyntaxNode VisitBracketedArgumentList(BracketedArgumentListSyntax node) {
return BuildArgumentList(node.Arguments);
}
public override LuaSyntaxNode VisitImplicitElementAccess(ImplicitElementAccessSyntax node) {
return node.ArgumentList.Accept(this);
}
public override LuaSyntaxNode VisitGenericName(GenericNameSyntax node) {
ISymbol symbol = semanticModel_.GetSymbolInfo(node).Symbol;
if (symbol.Kind == SymbolKind.Method) {
return GetMethodNameExpression((IMethodSymbol)symbol, node);
} else {
return GetTypeName(symbol);
}
}
public override LuaSyntaxNode VisitOmittedArraySizeExpression(OmittedArraySizeExpressionSyntax node) {
return LuaNumberLiteralExpressionSyntax.Zero;
}
public override LuaSyntaxNode VisitArrayRankSpecifier(ArrayRankSpecifierSyntax node) {
LuaArrayRankSpecifierSyntax rankSpecifier = new LuaArrayRankSpecifierSyntax(node.Rank);
foreach (var size in node.Sizes) {
var expression = (LuaExpressionSyntax)size.Accept(this);
rankSpecifier.Sizes.Add(expression);
}
return rankSpecifier;
}
public override LuaSyntaxNode VisitArrayType(ArrayTypeSyntax node) {
var arrayType = semanticModel_.GetTypeInfo(node).Type;
var typeExpress = GetTypeName(arrayType);
var arrayRankSpecifier = (LuaArrayRankSpecifierSyntax)node.RankSpecifiers[0].Accept(this);
var arrayTypeAdapter = new LuaArrayTypeAdapterExpressionSyntax(typeExpress, arrayRankSpecifier);
return arrayTypeAdapter;
}
private void FillMultiArrayInitializer(InitializerExpressionSyntax initializer, LuaTableExpression rankSpecifier, List<LuaExpressionSyntax> expressions, bool isFirst) {
if (isFirst) {
rankSpecifier.Add(initializer.Expressions.Count);
}
int index = 0;
foreach (var expression in initializer.Expressions) {
if (expression.IsKind(SyntaxKind.ArrayInitializerExpression)) {
FillMultiArrayInitializer((InitializerExpressionSyntax)expression, rankSpecifier, expressions, isFirst && index == 0);
} else {
var item = (LuaExpressionSyntax)expression.Accept(this);
expressions.Add(item);
}
++index;
}
}
private LuaExpressionSyntax BuildArrayCreationExpression(LuaArrayTypeAdapterExpressionSyntax arrayType, InitializerExpressionSyntax initializer) {
if (initializer != null && initializer.Expressions.Count > 0) {
if (arrayType.IsSimapleArray) {
var initializerExpressions = initializer.Expressions.Select(i => (LuaExpressionSyntax)i.Accept(this)).ToList();
return BuildArray(arrayType, initializerExpressions);
} else {
var rank = new LuaTableExpression() { IsSingleLine = true };
var expressions = new List<LuaExpressionSyntax>();
FillMultiArrayInitializer(initializer, rank, expressions, true);
return BuildMultiArray(arrayType, rank, expressions);
}
} else {
if (arrayType.IsSimapleArray) {
var size = arrayType.RankSpecifier.Sizes[0];
return BuildArray(arrayType, size);
} else {
var rank = new LuaTableExpression() { IsSingleLine = true };
foreach (var size in arrayType.RankSpecifier.Sizes) {
rank.Add(size);
}
return BuildMultiArray(arrayType, rank);
}
}
}
public override LuaSyntaxNode VisitArrayCreationExpression(ArrayCreationExpressionSyntax node) {
var arrayType = (LuaArrayTypeAdapterExpressionSyntax)node.Type.Accept(this);
return BuildArrayCreationExpression(arrayType, node.Initializer);
}
private LuaExpressionSyntax BuildArrayTypeFromInitializer(IArrayTypeSymbol arrayType, InitializerExpressionSyntax initializer) {
var typeExpress = GetTypeName(arrayType);
var arrayExpression = new LuaArrayTypeAdapterExpressionSyntax(typeExpress, new LuaArrayRankSpecifierSyntax(arrayType.Rank));
return BuildArrayCreationExpression(arrayExpression, initializer);
}
public override LuaSyntaxNode VisitImplicitArrayCreationExpression(ImplicitArrayCreationExpressionSyntax node) {
var arrayType = (IArrayTypeSymbol)semanticModel_.GetTypeInfo(node).Type;
return BuildArrayTypeFromInitializer(arrayType, node.Initializer);
}
private LuaInvocationExpressionSyntax BuildBaseFromThis() {
return new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.SystemBase, LuaIdentifierNameSyntax.This);
}
private LuaInvocationExpressionSyntax BuildCallBaseConstructor(INamedTypeSymbol type, ITypeSymbol baseType, int ctroCounter) {
var typeName = !generator_.IsSealed(type) ? GetTypeName(baseType) : BuildBaseFromThis();
LuaMemberAccessExpressionSyntax memberAccess = new LuaMemberAccessExpressionSyntax(typeName, LuaIdentifierNameSyntax.Ctor);
LuaInvocationExpressionSyntax otherCtorInvoke;
if (ctroCounter > 0) {
otherCtorInvoke = new LuaInvocationExpressionSyntax(new LuaTableIndexAccessExpressionSyntax(memberAccess, ctroCounter));
} else {
otherCtorInvoke = new LuaInvocationExpressionSyntax(memberAccess);
}
return otherCtorInvoke;
}
private LuaInvocationExpressionSyntax BuildCallBaseConstructor(INamedTypeSymbol typeSymbol) {
return BuildCallBaseConstructor(typeSymbol, out int _);
}
private LuaInvocationExpressionSyntax BuildCallBaseConstructor(INamedTypeSymbol typeSymbol, out int ctroCounter) {
ctroCounter = 0;
var baseType = typeSymbol.BaseType;
if (baseType != null && !baseType.IsSystemObjectOrValueType()) {
if (baseType.IsFromCode()) {
if (baseType.InstanceConstructors.Length > 1) {
ctroCounter = 1;
}
}
var otherCtorInvoke = BuildCallBaseConstructor(typeSymbol, baseType, ctroCounter);
otherCtorInvoke.AddArgument(LuaIdentifierNameSyntax.This);
return otherCtorInvoke;
}
return null;
}
public override LuaSyntaxNode VisitConstructorDeclaration(ConstructorDeclarationSyntax node) {
if (node.Modifiers.IsExtern()) {
return null;
}
IMethodSymbol symbol = semanticModel_.GetDeclaredSymbol(node);
methodInfos_.Push(new MethodInfo(symbol));
var document = BuildDocumentationComment(node);
var attributes = BuildAttributes(node.AttributeLists);
if (document != null) {
document.UnIgnore();
}
List<LuaExpressionSyntax> refOrOutParameters = new List<LuaExpressionSyntax>();
LuaConstructorAdapterExpressionSyntax function = new LuaConstructorAdapterExpressionSyntax();
PushFunction(function);
bool isStatic = node.Modifiers.IsStatic();
function.IsStatic = isStatic;
function.AddParameter(LuaIdentifierNameSyntax.This);
foreach (var parameterNode in node.ParameterList.Parameters) {
var parameter = (LuaParameterSyntax)parameterNode.Accept(this);
function.AddParameter(parameter);
if (parameterNode.Modifiers.IsOutOrRef()) {
refOrOutParameters.Add(parameter.Identifier);
}
}
bool isEmptyCtor = false;
if (node.Initializer != null) {
var initializerSymbol = (IMethodSymbol)semanticModel_.GetSymbolInfo(node.Initializer).Symbol;
int ctroIndex = GetConstructorIndex(initializerSymbol);
LuaInvocationExpressionSyntax otherCtorInvoke = null;
if (node.Initializer.IsKind(SyntaxKind.ThisConstructorInitializer)) {
Contract.Assert(ctroIndex != 0);
if (!symbol.IsCombineImplicitlyCtorMethod(out _)) {
LuaIdentifierNameSyntax thisCtor = LuaSyntaxNode.GetCtorNameString(ctroIndex);
otherCtorInvoke = new LuaInvocationExpressionSyntax(thisCtor);
function.IsInvokeThisCtor = true;
}
} else {
otherCtorInvoke = BuildCallBaseConstructor(symbol.ContainingType, initializerSymbol.ReceiverType, ctroIndex);
}
if (otherCtorInvoke != null) {
otherCtorInvoke.AddArgument(LuaIdentifierNameSyntax.This);
var refOrOutArguments = new List<RefOrOutArgument>();
var arguments = BuildArgumentList(initializerSymbol, initializerSymbol.Parameters, node.Initializer.ArgumentList, refOrOutArguments);
TryRemoveNilArgumentsAtTail(initializerSymbol, arguments);
otherCtorInvoke.AddArguments(arguments);
if (refOrOutArguments.Count == 0) {
function.AddStatement(otherCtorInvoke);
} else {
var newExpression = BuildInvokeRefOrOut(node.Initializer, otherCtorInvoke, refOrOutArguments);
function.AddStatement(newExpression);
}
}
} else if (!isStatic && generator_.IsBaseExplicitCtorExists(symbol.ContainingType.BaseType)) {
var baseCtorInvoke = BuildCallBaseConstructor(symbol.ContainingType, out int ctroCounter);
Contract.Assert(baseCtorInvoke != null);
function.AddStatement(baseCtorInvoke);
isEmptyCtor = ctroCounter == 0 && !node.Body.Statements.Any();
}
bool isCombineImplicitlyCtorMethod = false;
if (symbol.IsCombineImplicitlyCtorMethod(out int notNullParameterIndex)) {
var parameter = function.ParameterList.Parameters[notNullParameterIndex + 1].Identifier;
var ifStatement = new LuaIfStatementSyntax(new LuaBinaryExpressionSyntax(parameter, LuaSyntaxNode.Tokens.EqualsEquals, LuaIdentifierNameSyntax.Nil));
ifStatement.Body.AddStatement(new LuaReturnStatementSyntax());
function.AddStatement(ifStatement);
isCombineImplicitlyCtorMethod = true;
}
if (node.Body != null) {
LuaBlockSyntax block = (LuaBlockSyntax)node.Body.Accept(this);
function.AddStatements(block.Statements);
} else {
var bodyExpression = (LuaExpressionSyntax)node.ExpressionBody.Accept(this);
function.AddStatement(bodyExpression);
}
if (refOrOutParameters.Count > 0) {
var returnStatement = new LuaReturnStatementSyntax();
returnStatement.Expressions.AddRange(refOrOutParameters);
function.AddStatement(returnStatement);
}
PopFunction();
if (isStatic) {
CurType.SetStaticCtor(function, document);
} else {
bool isExportMetadata = IsCurTypeExportMetadataAll || attributes.Count > 0 || symbol.HasMetadataAttribute();
if (!isEmptyCtor || isExportMetadata) {
CurType.AddCtor(function, node.ParameterList.Parameters.Count == 0 || isCombineImplicitlyCtorMethod, document);
}
if (isExportMetadata) {
int ctorIndex = GetConstructorIndex(symbol);
LuaIdentifierNameSyntax name;
if (ctorIndex == 0) {
name = LuaIdentifierNameSyntax.Nil;
} else if (isCombineImplicitlyCtorMethod && symbol.ContainingType.InstanceConstructors.Length == 2) {
name = LuaIdentifierNameSyntax.Ctor;
} else {
name = LuaSyntaxNode.GetCtorNameString(ctorIndex);
}
AddMethodMetaData(new MethodDeclarationResult() {
Symbol = symbol,
Name = name,
Function = function,
Document = document,
Attributes = attributes,
});
}
}
methodInfos_.Pop();
return function;
}
public override LuaSyntaxNode VisitDestructorDeclaration(DestructorDeclarationSyntax node) {
if (node.Body.Statements.Any()) {
IMethodSymbol ctorSymbol = semanticModel_.GetDeclaredSymbol(node);
methodInfos_.Push(new MethodInfo(ctorSymbol));
LuaFunctionExpressionSyntax function = new LuaFunctionExpressionSyntax();
PushFunction(function);
function.AddParameter(LuaIdentifierNameSyntax.This);
var block = (LuaBlockSyntax)node.Body.Accept(this);
function.Body.Statements.AddRange(block.Statements);
CurType.AddMethod(LuaIdentifierNameSyntax.__GC, function, false);
PopFunction();
methodInfos_.Pop();
return function;
}
return null;
}
public override LuaSyntaxNode VisitSimpleBaseType(SimpleBaseTypeSyntax node) {
return node.Type.Accept(this);
}
private LuaExpressionSyntax VisitLambdaExpression(IEnumerable<ParameterSyntax> parameters, CSharpSyntaxNode body) {
IMethodSymbol symbol = (IMethodSymbol)semanticModel_.GetSymbolInfo(body.Parent).Symbol;
methodInfos_.Push(new MethodInfo(symbol));
LuaFunctionExpressionSyntax function = new LuaFunctionExpressionSyntax();
PushFunction(function);
if (parameters != null) {
foreach (var parameter in parameters) {
var luaParameter = (LuaParameterSyntax)parameter.Accept(this);
function.ParameterList.Parameters.Add(luaParameter);
}
}
LuaExpressionSyntax resultExpression = function;
if (body.IsKind(SyntaxKind.Block)) {
var block = (LuaBlockSyntax)body.Accept(this);
function.AddStatements(block.Statements);
} else {
var type = (INamedTypeSymbol)semanticModel_.GetTypeInfo(body.Parent).ConvertedType;
var delegateInvokeMethod = type.DelegateInvokeMethod;
var expression = (LuaExpressionSyntax)body.Accept(this);
if (delegateInvokeMethod.ReturnsVoid) {
function.AddStatement(expression);
} else {
function.AddStatement(new LuaReturnStatementSyntax(expression));
}
}
if (symbol.IsAsync) {
VisitAsync(symbol.ReturnsVoid, function);
}
PopFunction();
methodInfos_.Pop();
return resultExpression;
}
public override LuaSyntaxNode VisitSimpleLambdaExpression(SimpleLambdaExpressionSyntax node) {
return VisitLambdaExpression(new ParameterSyntax[] { node.Parameter }, node.Body);
}
public override LuaSyntaxNode VisitParenthesizedLambdaExpression(ParenthesizedLambdaExpressionSyntax node) {
return VisitLambdaExpression(node.ParameterList.Parameters, node.Body);
}
public override LuaSyntaxNode VisitAnonymousMethodExpression(AnonymousMethodExpressionSyntax node) {
return VisitLambdaExpression(node.ParameterList?.Parameters, node.Body);
}
public override LuaSyntaxNode VisitTypeParameter(TypeParameterSyntax node) {
return (LuaIdentifierNameSyntax)node.Identifier.ValueText;
}
public override LuaSyntaxNode VisitTypeOfExpression(TypeOfExpressionSyntax node) {
var type = semanticModel_.GetTypeInfo(node.Type).Type;
if (type != null && type.TypeKind == TypeKind.Enum) {
AddExportEnum(type);
var typeNameExpression = GetTypeShortName(type);
return new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.TypeOf, typeNameExpression);
}
var typeName = (LuaExpressionSyntax)node.Type.Accept(this);
return new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.TypeOf, typeName);
}
public override LuaSyntaxNode VisitThrowStatement(ThrowStatementSyntax node) {
var invocationExpression = new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.Throw);
if (node.Expression != null) {
var expression = (LuaExpressionSyntax)node.Expression.Accept(this);
invocationExpression.AddArgument(expression);
} else {
var curTryFunction = (LuaTryAdapterExpressionSyntax)CurFunction;
Contract.Assert(curTryFunction.CatchTemp != null);
invocationExpression.AddArgument(curTryFunction.CatchTemp);
}
return new LuaExpressionStatementSyntax(invocationExpression);
}
public override LuaSyntaxNode VisitThrowExpression(ThrowExpressionSyntax node) {
var invocationExpression = new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.Throw);
var expression = (LuaExpressionSyntax)node.Expression.Accept(this);
invocationExpression.AddArgument(expression);
return invocationExpression;
}
public override LuaSyntaxNode VisitCatchFilterClause(CatchFilterClauseSyntax node) {
var function = new LuaFunctionExpressionSyntax();
PushFunction(function);
var expression = (LuaExpressionSyntax)node.FilterExpression.Accept(this);
function.AddStatement(new LuaReturnStatementSyntax(expression));
PopFunction();
return new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.CatchFilter, function);
}
public override LuaSyntaxNode VisitCatchClause(CatchClauseSyntax node) {
throw new InvalidOperationException();
}
public override LuaSyntaxNode VisitCatchDeclaration(CatchDeclarationSyntax node) {
return new LuaVariableDeclaratorSyntax(node.Identifier.ValueText);
}
private LuaTryAdapterExpressionSyntax VisitTryCatchesExpress(SyntaxList<CatchClauseSyntax> catches) {
LuaTryAdapterExpressionSyntax functionExpress = new LuaTryAdapterExpressionSyntax();
PushFunction(functionExpress);
var temp = GetTempIdentifier();
functionExpress.CatchTemp = temp;
functionExpress.AddParameter(temp);
LuaIfStatementSyntax ifStatement = null;
LuaInvocationExpressionSyntax filter = null;
bool hasCatchRoot = false;
foreach (var catchNode in catches) {
bool isRootExceptionDeclaration = false;
LuaExpressionSyntax ifCondition = null;
if (catchNode.Filter != null) {
filter = (LuaInvocationExpressionSyntax)catchNode.Filter.Accept(this);
ifCondition = filter;
}
if (catchNode.Declaration != null) {
var typeName = (LuaIdentifierNameSyntax)catchNode.Declaration.Type.Accept(this);
var typeSymbol = semanticModel_.GetTypeInfo(catchNode.Declaration.Type).Type;
if (typeSymbol != generator_.SystemExceptionTypeSymbol) {
var mathcTypeInvocation = new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.Is, temp, typeName);
if (ifCondition != null) {
ifCondition = ifCondition.And(mathcTypeInvocation);
} else {
ifCondition = mathcTypeInvocation;
}
} else {
if (!catchNode.Declaration.Identifier.IsKind(SyntaxKind.None)) {
isRootExceptionDeclaration = true;
}
hasCatchRoot = true;
}
} else {
hasCatchRoot = true;
}
var block = (LuaBlockSyntax)catchNode.Block.Accept(this);
if (ifCondition != null) {
LuaBlockSyntax body;
if (ifStatement == null) {
ifStatement = new LuaIfStatementSyntax(ifCondition);
body = ifStatement.Body;
} else {
LuaElseIfStatementSyntax elseIfStatement = new LuaElseIfStatementSyntax(ifCondition);
body = elseIfStatement.Body;
ifStatement.ElseIfStatements.Add(elseIfStatement);
}
if (catchNode.Declaration != null && !catchNode.Declaration.Identifier.IsKind(SyntaxKind.None)) {
var variableDeclarator = (LuaVariableDeclaratorSyntax)catchNode.Declaration.Accept(this);
variableDeclarator.Initializer = new LuaEqualsValueClauseSyntax(temp);
body.Statements.Add(new LuaLocalVariableDeclaratorSyntax(variableDeclarator));
if (filter != null) {
var when = (LuaFunctionExpressionSyntax)filter.Arguments.First().Expression;
when.AddParameter(variableDeclarator.Identifier);
filter.AddArgument(temp);
}
}
body.Statements.AddRange(block.Statements);
} else {
if (isRootExceptionDeclaration) {
var variableDeclarator = (LuaVariableDeclaratorSyntax)catchNode.Declaration.Accept(this);
variableDeclarator.Initializer = new LuaEqualsValueClauseSyntax(temp);
block.Statements.Insert(0, new LuaLocalVariableDeclaratorSyntax(variableDeclarator));
}
if (ifStatement != null) {
LuaElseClauseSyntax elseClause = new LuaElseClauseSyntax();
elseClause.Body.Statements.AddRange(block.Statements);
ifStatement.Else = elseClause;
} else {
functionExpress.AddStatements(block.Statements);
}
break;
}
}
if (ifStatement != null) {
if (!hasCatchRoot) {
Contract.Assert(ifStatement.Else == null);
var rethrowStatement = new LuaReturnStatementSyntax();
rethrowStatement.Expressions.Add(LuaIdentifierNameSyntax.One);
rethrowStatement.Expressions.Add(temp);
LuaBlockSyntax block = new LuaBlockSyntax();
block.Statements.Add(rethrowStatement);
LuaElseClauseSyntax elseClause = new LuaElseClauseSyntax();
elseClause.Body.Statements.AddRange(block.Statements);
ifStatement.Else = elseClause;
}
functionExpress.AddStatement(ifStatement);
}
PopFunction();
return functionExpress;
}
private LuaStatementSyntax BuildCheckReturnInvocationExpression(LuaInvocationExpressionSyntax invocationExpression, SyntaxNode node) {
if (IsReturnExists(node)) {
var curMethodInfo = CurMethodInfoOrNull;
bool isReturnVoid = curMethodInfo != null && curMethodInfo.Symbol.ReturnsVoid;
var temp1 = GetTempIdentifier();
var temp2 = isReturnVoid ? null : GetTempIdentifier();
var localVariables = new LuaLocalVariablesStatementSyntax();
localVariables.Variables.Add(temp1);
if (temp2 != null) {
localVariables.Variables.Add(temp2);
}
var initializer = new LuaEqualsValueClauseListSyntax();
initializer.Values.Add(invocationExpression);
localVariables.Initializer = initializer;
var ifStatement = new LuaIfStatementSyntax(temp1);
var statement = InternalVisitReturnStatement(temp2);
ifStatement.Body.Statements.Add(statement);
var statements = new LuaStatementListSyntax();
statements.Statements.Add(localVariables);
statements.Statements.Add(ifStatement);
return statements;
} else {
return new LuaExpressionStatementSyntax(invocationExpression);
}
}
public override LuaSyntaxNode VisitFinallyClause(FinallyClauseSyntax node) {
LuaFunctionExpressionSyntax functionExpress = new LuaFunctionExpressionSyntax();
PushFunction(functionExpress);
var finallyBlock = (LuaBlockSyntax)node.Block.Accept(this);
PopFunction();
functionExpress.AddStatements(finallyBlock.Statements);
return functionExpress;
}
public override LuaSyntaxNode VisitTryStatement(TryStatementSyntax node) {
LuaInvocationExpressionSyntax tryInvocationExpression = new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.Try);
LuaTryAdapterExpressionSyntax tryBlockFunctionExpress = new LuaTryAdapterExpressionSyntax();
PushFunction(tryBlockFunctionExpress);
var block = (LuaBlockSyntax)node.Block.Accept(this);
PopFunction();
tryBlockFunctionExpress.AddStatements(block.Statements);
tryInvocationExpression.AddArgument(tryBlockFunctionExpress);
if (node.Catches.Count > 0) {
var catchesExpress = VisitTryCatchesExpress(node.Catches);
tryInvocationExpression.AddArgument(catchesExpress);
} else {
tryInvocationExpression.AddArgument(LuaIdentifierNameSyntax.Nil);
}
if (node.Finally != null) {
var finallyfunctionExpress = (LuaFunctionExpressionSyntax)node.Finally.Accept(this);
tryInvocationExpression.AddArgument(finallyfunctionExpress);
}
return BuildCheckReturnInvocationExpression(tryInvocationExpression, node);
}
private LuaStatementSyntax BuildUsingStatement(SyntaxNode node, List<LuaIdentifierNameSyntax> variableIdentifiers, List<LuaExpressionSyntax> variableExpressions, Action<LuaBlockSyntax> writeStatements) {
var usingAdapterExpress = new LuaUsingAdapterExpressionSyntax();
usingAdapterExpress.ParameterList.Parameters.AddRange(variableIdentifiers.Select(i => new LuaParameterSyntax(i)));
PushFunction(usingAdapterExpress);
writeStatements(usingAdapterExpress.Body);
PopFunction();
if (variableExpressions.Count == 1) {
var usingInvocationExpression = new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.Using);
usingInvocationExpression.AddArgument(variableExpressions.First());
usingInvocationExpression.AddArgument(usingAdapterExpress);
return BuildCheckReturnInvocationExpression(usingInvocationExpression, node);
} else {
var usingInvocationExpression = new LuaInvocationExpressionSyntax(LuaIdentifierNameSyntax.UsingX);
usingInvocationExpression.AddArgument(usingAdapterExpress);
usingInvocationExpression.ArgumentList.Arguments.AddRange(variableExpressions.Select(i => new LuaArgumentSyntax(i)));
return BuildCheckReturnInvocationExpression(usingInvocationExpression, node);
}
}
public override LuaSyntaxNode VisitUsingStatement(UsingStatementSyntax node) {
var variableIdentifiers = new List<LuaIdentifierNameSyntax>();
var variableExpressions = new List<LuaExpressionSyntax>();
if (node.Declaration != null) {
var variableList = (LuaVariableListDeclarationSyntax)node.Declaration.Accept(this);
foreach (var variable in variableList.Variables) {
variableIdentifiers.Add(variable.Identifier);
variableExpressions.Add(variable.Initializer.Value);
}
} else {
var expression = (LuaExpressionSyntax)node.Expression.Accept(this);
variableExpressions.Add(expression);
}
return BuildUsingStatement(node, variableIdentifiers, variableExpressions, body => WriteStatementOrBlock(node.Statement, body));
}
private void ApplyUsingDeclarations(LuaBlockSyntax block, List<int> indexs, BlockSyntax node) {
int postion = indexs.Count - 1;
while (postion >= 1 && indexs[postion] == indexs[postion - 1] + 1) {
--postion;
}
var variableIdentifiers = new List<LuaIdentifierNameSyntax>();
var variableExpressions = new List<LuaExpressionSyntax>();
for (int i = postion; i < indexs.Count; ++i) {
int index = indexs[i];
var localDeclaration = (LuaLocalDeclarationStatementSyntax)block.Statements[index];
var variableList = (LuaVariableListDeclarationSyntax)localDeclaration.Declaration;
foreach (var variable in variableList.Variables) {
variableIdentifiers.Add(variable.Identifier);
variableExpressions.Add(variable.Initializer.Value);
}
}
int lastIndex = indexs.Last();
var statements = block.Statements.Skip(lastIndex + 1);
var usingStatement = BuildUsingStatement(node, variableIdentifiers, variableExpressions, body => body.Statements.AddRange(statements));
block.Statements.RemoveRange(indexs[postion]);
block.AddStatement(usingStatement);
indexs.RemoveRange(postion);
if (indexs.Count > 0) {
ApplyUsingDeclarations(block, indexs, node);
}
}
public override LuaSyntaxNode VisitThisExpression(ThisExpressionSyntax node) {
return LuaIdentifierNameSyntax.This;
}
private enum BaseVisitType {
UseThis,
UseName,
UseBase,
}
private BaseVisitType CheckBaseVisitType<T>(MemberAccessExpressionSyntax parent, T symbol, Func<T, ISymbol> overriddenFunc) where T : ISymbol {
if (symbol.IsOverridable()) {
var curTypeSymbol = CurTypeSymbol;
if (generator_.IsSealed(curTypeSymbol)) {
bool exists = curTypeSymbol.GetMembers().OfType<T>().Any(i => {
var overriddenSymbol = overriddenFunc(i);
return overriddenSymbol != null && overriddenSymbol.OriginalDefinition.Equals(symbol.OriginalDefinition);
});
return exists ? BaseVisitType.UseBase : BaseVisitType.UseThis;
} else {
return BaseVisitType.UseName;
}
} else {
return BaseVisitType.UseThis;
}
}
public override LuaSyntaxNode VisitBaseExpression(BaseExpressionSyntax node) {
var parent = (MemberAccessExpressionSyntax)node.Parent;
var symbol = semanticModel_.GetSymbolInfo(parent).Symbol;
BaseVisitType useType = BaseVisitType.UseThis;
switch (symbol.Kind) {
case SymbolKind.Method: {
symbol.IsOverridable();
var methodSymbol = (IMethodSymbol)symbol;
useType = CheckBaseVisitType(parent, methodSymbol, i => i.OverriddenMethod);
break;
}
case SymbolKind.Property: {
var propertySymbol = (IPropertySymbol)symbol;
if (!IsPropertyField(propertySymbol)) {
useType = CheckBaseVisitType(parent, propertySymbol, i => i.OverriddenProperty);
}
break;
}
case SymbolKind.Event: {
var eventSymbol = (IEventSymbol)symbol;
if (!IsEventFiled(eventSymbol)) {
useType = CheckBaseVisitType(parent, eventSymbol, i => i.OverriddenEvent);
}
break;
}
}
switch (useType) {
case BaseVisitType.UseThis:
return LuaIdentifierNameSyntax.This;
case BaseVisitType.UseName:
return GetTypeName(symbol.ContainingType);
case BaseVisitType.UseBase:
return BuildBaseFromThis();
default:
Contract.Assert(false);
throw new InvalidOperationException();
}
}
public override LuaSyntaxNode VisitConditionalAccessExpression(ConditionalAccessExpressionSyntax node) {
bool isEmpty = functions_.Count == 0;
if (isEmpty) {
LuaFunctionExpressionSyntax function = new LuaFunctionExpressionSyntax();
PushFunction(function);
}
bool isRoot = !node.Parent.IsKind(SyntaxKind.ConditionalAccessExpression);
if (isRoot) {
conditionalTemps_.Push(GetTempIdentifier());
}
var temp = conditionalTemps_.Peek();
var expression = (LuaExpressionSyntax)node.Expression.Accept(this);
if (isRoot) {
CurBlock.Statements.Add(new LuaLocalVariableDeclaratorSyntax(temp, expression));
} else {
CurBlock.Statements.Add(new LuaExpressionStatementSyntax(new LuaAssignmentExpressionSyntax(temp, expression)));
}
LuaBinaryExpressionSyntax condition = new LuaBinaryExpressionSyntax(temp, LuaSyntaxNode.Tokens.NotEquals, LuaIdentifierNameSyntax.Nil);
LuaIfStatementSyntax ifStatement = new LuaIfStatementSyntax(condition);
CurBlock.Statements.Add(ifStatement);
PushBlock(ifStatement.Body);
var whenNotNull = (LuaExpressionSyntax)node.WhenNotNull.Accept(this);
PopBlock();
if (isRoot) {
conditionalTemps_.Pop();
ReleaseTempIdentifier(temp);
}
if (node.Parent.IsKind(SyntaxKind.ExpressionStatement)) {
if (isEmpty) {
throw new InvalidOperationException();
}
if (!node.WhenNotNull.IsKind(SyntaxKind.ConditionalAccessExpression)) {
ifStatement.Body.Statements.Add(new LuaExpressionStatementSyntax(whenNotNull));
}
return LuaExpressionSyntax.EmptyExpression;
} else {
if (!node.WhenNotNull.IsKind(SyntaxKind.ConditionalAccessExpression)) {
LuaAssignmentExpressionSyntax assignment = new LuaAssignmentExpressionSyntax(temp, whenNotNull);
ifStatement.Body.Statements.Add(new LuaExpressionStatementSyntax(assignment));
}
if (isEmpty) {
var function = CurFunction;
function.AddStatement(new LuaReturnStatementSyntax(temp));
PopFunction();
return new LuaInvocationExpressionSyntax(new LuaParenthesizedExpressionSyntax(function));
} else {
return temp;
}
}
}
public override LuaSyntaxNode VisitMemberBindingExpression(MemberBindingExpressionSyntax node) {
ISymbol symbol = semanticModel_.GetSymbolInfo(node).Symbol;
if (IsDelegateInvoke(symbol, node.Name)) {
return conditionalTemps_.Peek();
}
var nameExpression = (LuaExpressionSyntax)node.Name.Accept(this);
bool isObjectColon = symbol.Kind == SymbolKind.Method || (symbol.Kind == SymbolKind.Property && !IsPropertyFieldOrEventFiled(symbol));
return new LuaMemberAccessExpressionSyntax(conditionalTemps_.Peek(), nameExpression, isObjectColon);
}
public override LuaSyntaxNode VisitElementBindingExpression(ElementBindingExpressionSyntax node) {
var argumentList = (LuaArgumentListSyntax)node.ArgumentList.Accept(this);
var memberAccess = new LuaMemberAccessExpressionSyntax(conditionalTemps_.Peek(), LuaSyntaxNode.Tokens.Get, true);
LuaInvocationExpressionSyntax invocation = new LuaInvocationExpressionSyntax(memberAccess);
invocation.ArgumentList.Arguments.AddRange(argumentList.Arguments);
return invocation;
}
public override LuaSyntaxNode VisitDefaultExpression(DefaultExpressionSyntax node) {
var constExpression = GetConstExpression(node);
if (constExpression != null) {
return constExpression;
}
var type = semanticModel_.GetTypeInfo(node.Type).Type;
return GetDefaultValueExpression(type);
}
private LuaExpressionSyntax InternalVisitElementAccessExpression(IPropertySymbol symbol, ElementAccessExpressionSyntax node) {
if (symbol != null) {
bool isGet = node.IsGetExpressionNode();
string codeTemplate = XmlMetaProvider.GetProertyCodeTemplate(symbol, isGet);
if (codeTemplate != null) {
List<LuaExpressionSyntax> arguments = BuildArgumentList(symbol, symbol.Parameters, node.ArgumentList);
return BuildCodeTemplateExpression(codeTemplate, node.Expression, arguments, null);
}
}
var expression = BuildMemberAccessTargetExpression(node.Expression);
LuaIdentifierNameSyntax baseName = symbol == null ? LuaIdentifierNameSyntax.Empty : GetMemberName(symbol);
LuaPropertyOrEventIdentifierNameSyntax identifierName = new LuaPropertyOrEventIdentifierNameSyntax(true, baseName);
LuaPropertyAdapterExpressionSyntax propertyAdapter = new LuaPropertyAdapterExpressionSyntax(expression, identifierName, true);
if (symbol != null) {
List<LuaExpressionSyntax> arguments = BuildArgumentList(symbol, symbol.Parameters, node.ArgumentList);
propertyAdapter.ArgumentList.AddArguments(arguments);
} else {
var argumentList = (LuaArgumentListSyntax)node.ArgumentList.Accept(this);
propertyAdapter.ArgumentList.Arguments.AddRange(argumentList.Arguments);
}
return propertyAdapter;
}
public override LuaSyntaxNode VisitElementAccessExpression(ElementAccessExpressionSyntax node) {
var symbol = semanticModel_.GetSymbolInfo(node).Symbol;
if (symbol != null && symbol.Kind == SymbolKind.Method) {
var typeSymbol = semanticModel_.GetTypeInfo(node.Expression).Type;
IPropertySymbol propertySymbol;
if (typeSymbol.TypeKind == TypeKind.Array) {
propertySymbol = null;
} else {
propertySymbol = (IPropertySymbol)typeSymbol.GetMembers().First(i => i.IsIndexerProperty());
}
return InternalVisitElementAccessExpression(propertySymbol, node);
} else {
return InternalVisitElementAccessExpression((IPropertySymbol)symbol, node);
}
}
private LuaExpressionSyntax VisitForamtInterpolatedStringExpression(InterpolatedStringExpressionSyntax node) {
int index = 0;
StringBuilder sb = new StringBuilder();
List<LuaExpressionSyntax> expressions = new List<LuaExpressionSyntax>();
foreach (var content in node.Contents) {
if (content.IsKind(SyntaxKind.InterpolatedStringText)) {
sb.Append((LuaExpressionSyntax)content.Accept(this));
} else {
var interpolation = (InterpolationSyntax)content;
ITypeSymbol typeSymbol = semanticModel_.GetTypeInfo(interpolation.Expression).Type;
var expression = (LuaExpressionSyntax)interpolation.Expression.Accept(this);
if (typeSymbol.IsEnumType(out var enumTypeSymbol)) {
expression = BuildEnumToStringExpression(enumTypeSymbol, expression);
}
expressions.Add(expression);
sb.Append('{');
sb.Append(index);
sb.Append('}');
++index;
}
}
LuaLiteralExpressionSyntax format = BuildVerbatimStringExpression(sb.ToString());
var memberAccessExpression = new LuaMemberAccessExpressionSyntax(new LuaParenthesizedExpressionSyntax(format), LuaIdentifierNameSyntax.Format, true);
return new LuaInvocationExpressionSyntax(memberAccessExpression, expressions);
}
private LuaExpressionSyntax WrapInterpolatedString(object obj) {
if (obj is LuaIdentifierNameSyntax s) {
return new LuaStringLiteralExpressionSyntax(s);
} else if (obj is ExpressionSyntax e) {
return WrapStringConcatExpression(e);
}
return (LuaBinaryExpressionSyntax)obj;
}
private LuaBinaryExpressionSyntax ConcatInterpolatedString(object left, object right) {