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CSharpToVBConverterVisitor.cs
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CSharpToVBConverterVisitor.cs
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under MIT X11 license (for details please see \doc\license.txt)
using System;
using System.Collections.Generic;
using System.Linq;
using ICSharpCode.NRefactory.PatternMatching;
using ICSharpCode.NRefactory.TypeSystem;
using ICSharpCode.NRefactory.VB.Ast;
namespace ICSharpCode.NRefactory.VB.Visitors
{
public interface IEnvironmentProvider
{
string RootNamespace { get; }
string GetTypeNameForAttribute(CSharp.Attribute attribute);
TypeKind GetTypeKindForAstType(CSharp.AstType type);
TypeCode ResolveExpression(CSharp.Expression expression);
bool? IsReferenceType(CSharp.Expression expression);
//ITypeResolveContext ResolveContext { get; }
IType ResolveType(AstType type, TypeDeclaration entity = null);
}
/// <summary>
/// Description of CSharpToVBConverterVisitor.
/// </summary>
public class CSharpToVBConverterVisitor : CSharp.IAstVisitor<object, VB.AstNode>
{
IEnvironmentProvider provider;
Stack<BlockStatement> blocks;
Stack<TypeDeclaration> types;
Stack<MemberInfo> members;
class MemberInfo
{
public bool inIterator;
}
public CSharpToVBConverterVisitor(IEnvironmentProvider provider)
{
this.provider = provider;
this.blocks = new Stack<BlockStatement>();
this.types = new Stack<TypeDeclaration>();
this.members = new Stack<MemberInfo>();
}
public AstNode VisitAnonymousMethodExpression(CSharp.AnonymousMethodExpression anonymousMethodExpression, object data)
{
members.Push(new MemberInfo());
var expr = new MultiLineLambdaExpression() {
IsSub = true,
Body = (BlockStatement)anonymousMethodExpression.Body.AcceptVisitor(this, data)
};
ConvertNodes(anonymousMethodExpression.Parameters, expr.Parameters);
if (members.Pop().inIterator) {
expr.Modifiers |= LambdaExpressionModifiers.Iterator;
}
return EndNode(anonymousMethodExpression, expr);
}
public AstNode VisitUndocumentedExpression(CSharp.UndocumentedExpression undocumentedExpression, object data)
{
var invocation = new InvocationExpression();
switch (undocumentedExpression.UndocumentedExpressionType) {
case CSharp.UndocumentedExpressionType.ArgListAccess:
case CSharp.UndocumentedExpressionType.ArgList:
invocation.Target = new IdentifierExpression { Identifier = "__ArgList" };
break;
case CSharp.UndocumentedExpressionType.RefValue:
invocation.Target = new IdentifierExpression { Identifier = "__RefValue" };
break;
case CSharp.UndocumentedExpressionType.RefType:
invocation.Target = new IdentifierExpression { Identifier = "__RefType" };
break;
case CSharp.UndocumentedExpressionType.MakeRef:
invocation.Target = new IdentifierExpression { Identifier = "__MakeRef" };
break;
default:
throw new Exception("Invalid value for UndocumentedExpressionType");
}
ConvertNodes(undocumentedExpression.Arguments, invocation.Arguments);
return EndNode(undocumentedExpression, invocation);
}
public AstNode VisitArrayCreateExpression(CSharp.ArrayCreateExpression arrayCreateExpression, object data)
{
var expr = new ArrayCreateExpression() {
Type = (AstType)arrayCreateExpression.Type.AcceptVisitor(this, data),
Initializer = (ArrayInitializerExpression)arrayCreateExpression.Initializer.AcceptVisitor(this, data)
};
ConvertNodes(arrayCreateExpression.Arguments, expr.Arguments);
ConvertNodes(arrayCreateExpression.AdditionalArraySpecifiers, expr.AdditionalArraySpecifiers);
return EndNode(arrayCreateExpression, expr);
}
public AstNode VisitArrayInitializerExpression(CSharp.ArrayInitializerExpression arrayInitializerExpression, object data)
{
var expr = new ArrayInitializerExpression();
ConvertNodes(arrayInitializerExpression.Elements, expr.Elements);
return EndNode(arrayInitializerExpression, expr);
}
public AstNode VisitAsExpression(CSharp.AsExpression asExpression, object data)
{
return EndNode(asExpression, new CastExpression(CastType.TryCast, (AstType)asExpression.Type.AcceptVisitor(this, data), (Expression)asExpression.Expression.AcceptVisitor(this, data)));
}
public AstNode VisitAssignmentExpression(CSharp.AssignmentExpression assignmentExpression, object data)
{
var left = (Expression)assignmentExpression.Left.AcceptVisitor(this, data);
var op = AssignmentOperatorType.None;
var right = (Expression)assignmentExpression.Right.AcceptVisitor(this, data);
switch (assignmentExpression.Operator) {
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.Assign:
op = AssignmentOperatorType.Assign;
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.Add:
op = AssignmentOperatorType.Add;
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.Subtract:
op = AssignmentOperatorType.Subtract;
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.Multiply:
op = AssignmentOperatorType.Multiply;
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.Divide:
op = AssignmentOperatorType.Divide;
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.Modulus:
op = AssignmentOperatorType.Assign;
right = new BinaryOperatorExpression((Expression)left.Clone(), BinaryOperatorType.Modulus, right);
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.ShiftLeft:
op = AssignmentOperatorType.ShiftLeft;
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.ShiftRight:
op = AssignmentOperatorType.ShiftRight;
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.BitwiseAnd:
op = AssignmentOperatorType.Assign;
right = new BinaryOperatorExpression((Expression)left.Clone(), BinaryOperatorType.BitwiseAnd, right);
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.BitwiseOr:
op = AssignmentOperatorType.Assign;
right = new BinaryOperatorExpression((Expression)left.Clone(), BinaryOperatorType.BitwiseOr, right);
break;
case ICSharpCode.NRefactory.CSharp.AssignmentOperatorType.ExclusiveOr:
op = AssignmentOperatorType.Assign;
right = new BinaryOperatorExpression((Expression)left.Clone(), BinaryOperatorType.ExclusiveOr, right);
break;
default:
throw new Exception("Invalid value for AssignmentOperatorType: " + assignmentExpression.Operator);
}
var expr = new AssignmentExpression(left, op, right);
return EndNode(assignmentExpression, expr);
}
public AstNode VisitBaseReferenceExpression(CSharp.BaseReferenceExpression baseReferenceExpression, object data)
{
InstanceExpression result = new InstanceExpression(InstanceExpressionType.MyBase, baseReferenceExpression.StartLocation);
return EndNode(baseReferenceExpression, result);
}
public AstNode VisitBinaryOperatorExpression(CSharp.BinaryOperatorExpression binaryOperatorExpression, object data)
{
var left = (Expression)binaryOperatorExpression.Left.AcceptVisitor(this, data);
var op = BinaryOperatorType.None;
var right = (Expression)binaryOperatorExpression.Right.AcceptVisitor(this, data);
switch (binaryOperatorExpression.Operator) {
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.BitwiseAnd:
op = BinaryOperatorType.BitwiseAnd;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.BitwiseOr:
op = BinaryOperatorType.BitwiseOr;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.ConditionalAnd:
op = BinaryOperatorType.LogicalAnd;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.ConditionalOr:
op = BinaryOperatorType.LogicalOr;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.ExclusiveOr:
op = BinaryOperatorType.ExclusiveOr;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.GreaterThan:
op = BinaryOperatorType.GreaterThan;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.GreaterThanOrEqual:
op = BinaryOperatorType.GreaterThanOrEqual;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.Equality:
if (IsReferentialEquality(binaryOperatorExpression))
op = BinaryOperatorType.ReferenceEquality;
else
op = BinaryOperatorType.Equality;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.InEquality:
if (IsReferentialEquality(binaryOperatorExpression))
op = BinaryOperatorType.ReferenceInequality;
else
op = BinaryOperatorType.InEquality;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.LessThan:
op = BinaryOperatorType.LessThan;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.LessThanOrEqual:
op = BinaryOperatorType.LessThanOrEqual;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.Add:
// TODO might be string concatenation
op = BinaryOperatorType.Add;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.Subtract:
op = BinaryOperatorType.Subtract;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.Multiply:
op = BinaryOperatorType.Multiply;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.Divide:
op = BinaryOperatorType.Divide;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.Modulus:
op = BinaryOperatorType.Modulus;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.ShiftLeft:
op = BinaryOperatorType.ShiftLeft;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.ShiftRight:
op = BinaryOperatorType.ShiftRight;
break;
case ICSharpCode.NRefactory.CSharp.BinaryOperatorType.NullCoalescing:
var nullCoalescing = new ConditionalExpression {
ConditionExpression = left,
FalseExpression = right
};
return EndNode(binaryOperatorExpression, nullCoalescing);
default:
throw new Exception("Invalid value for BinaryOperatorType: " + binaryOperatorExpression.Operator);
}
return EndNode(binaryOperatorExpression, new BinaryOperatorExpression(left, op, right));
}
bool IsReferentialEquality(CSharp.BinaryOperatorExpression binaryOperatorExpression)
{
var left = provider.IsReferenceType(binaryOperatorExpression.Left);
var right = provider.IsReferenceType(binaryOperatorExpression.Right);
var leftCode = provider.ResolveExpression(binaryOperatorExpression.Left);
var rightCode = provider.ResolveExpression(binaryOperatorExpression.Right);
return (left == true || right == true) && (leftCode != TypeCode.String && rightCode != TypeCode.String);
}
public AstNode VisitCastExpression(CSharp.CastExpression castExpression, object data)
{
var expr = new CastExpression();
expr.Type = (AstType)castExpression.Type.AcceptVisitor(this, data);
// TODO read additional type information from annotation
// (int)x is equivalent to CInt(Math.Truncate(x))
expr.CastType = GetCastType(expr.Type, null);
expr.Expression = (Expression)castExpression.Expression.AcceptVisitor(this, data);
if (expr.CastType != CastType.CType)
expr.Type = null;
return EndNode(castExpression, expr);
}
CastType GetCastType(AstType type, object typeInformation)
{
var primType = type as PrimitiveType;
if (primType == null)
return CastType.CType;
switch (primType.Keyword) {
case "Boolean":
return CastType.CBool;
case "Byte":
return CastType.CByte;
case "Char":
return CastType.CChar;
case "Date":
return CastType.CDate;
case "Double":
return CastType.CDbl;
case "Decimal":
return CastType.CDec;
case "Integer":
return CastType.CInt;
case "Long":
return CastType.CLng;
case "Object":
return CastType.CObj;
case "SByte":
return CastType.CSByte;
case "Short":
return CastType.CShort;
case "Single":
return CastType.CSng;
case "String":
return CastType.CStr;
case "UInteger":
return CastType.CUInt;
case "ULong":
return CastType.CULng;
case "UShort":
return CastType.CUShort;
}
return CastType.CType;
}
public AstNode VisitCheckedExpression(CSharp.CheckedExpression checkedExpression, object data)
{
blocks.Peek().AddChild(new Comment(" The following expression was wrapped in a checked-expression", false), AstNode.Roles.Comment);
return EndNode(checkedExpression, checkedExpression.Expression.AcceptVisitor(this, data));
}
public AstNode VisitConditionalExpression(CSharp.ConditionalExpression conditionalExpression, object data)
{
var cond = new ConditionalExpression() {
ConditionExpression = (Expression)conditionalExpression.Condition.AcceptVisitor(this, data),
TrueExpression = (Expression)conditionalExpression.TrueExpression.AcceptVisitor(this, data),
FalseExpression = (Expression)conditionalExpression.FalseExpression.AcceptVisitor(this, data)
};
return EndNode(conditionalExpression, cond);
}
public AstNode VisitDefaultValueExpression(CSharp.DefaultValueExpression defaultValueExpression, object data)
{
// Nothing is equivalent to default(T) for reference and value types.
return EndNode(defaultValueExpression, new PrimitiveExpression(null));
}
public AstNode VisitDirectionExpression(CSharp.DirectionExpression directionExpression, object data)
{
return EndNode(directionExpression, (Expression)directionExpression.Expression.AcceptVisitor(this, data));
}
public AstNode VisitIdentifierExpression(CSharp.IdentifierExpression identifierExpression, object data)
{
var expr = new IdentifierExpression();
expr.Identifier = new Identifier(identifierExpression.Identifier, TextLocation.Empty);
ConvertNodes(identifierExpression.TypeArguments, expr.TypeArguments);
return EndNode(identifierExpression, expr);
}
public AstNode VisitIndexerExpression(CSharp.IndexerExpression indexerExpression, object data)
{
var expr = new InvocationExpression((Expression)indexerExpression.Target.AcceptVisitor(this, data));
ConvertNodes(indexerExpression.Arguments, expr.Arguments);
return EndNode(indexerExpression, expr);
}
public AstNode VisitInvocationExpression(CSharp.InvocationExpression invocationExpression, object data)
{
var expr = new InvocationExpression(
(Expression)invocationExpression.Target.AcceptVisitor(this, data));
ConvertNodes(invocationExpression.Arguments, expr.Arguments);
return EndNode(invocationExpression, expr);
}
public AstNode VisitIsExpression(CSharp.IsExpression isExpression, object data)
{
var expr = new TypeOfIsExpression() {
Type = (AstType)isExpression.Type.AcceptVisitor(this, data),
TypeOfExpression = (Expression)isExpression.Expression.AcceptVisitor(this, data)
};
return EndNode(isExpression, expr);
}
public AstNode VisitLambdaExpression(CSharp.LambdaExpression lambdaExpression, object data)
{
LambdaExpression expr = null;
if (lambdaExpression.Body is CSharp.Expression) {
var singleLine = new SingleLineFunctionLambdaExpression() {
EmbeddedExpression = (Expression)lambdaExpression.Body.AcceptVisitor(this, data)
};
ConvertNodes(lambdaExpression.Parameters, singleLine.Parameters);
expr = singleLine;
} else
throw new NotImplementedException();
return EndNode(lambdaExpression, expr);
}
public AstNode VisitMemberReferenceExpression(CSharp.MemberReferenceExpression memberReferenceExpression, object data)
{
var memberAccessExpression = new MemberAccessExpression();
memberAccessExpression.Target = (Expression)memberReferenceExpression.Target.AcceptVisitor(this, data);
memberAccessExpression.MemberName = new Identifier(memberReferenceExpression.MemberName, TextLocation.Empty);
ConvertNodes(memberReferenceExpression.TypeArguments, memberAccessExpression.TypeArguments);
return EndNode(memberReferenceExpression, memberAccessExpression);
}
public AstNode VisitNamedArgumentExpression(CSharp.NamedArgumentExpression namedArgumentExpression, object data)
{
Expression expr = new NamedArgumentExpression {
Identifier = namedArgumentExpression.Name,
Expression = (Expression)namedArgumentExpression.Expression.AcceptVisitor(this, data)
};
return EndNode(namedArgumentExpression, expr);
}
public AstNode VisitNamedExpression(CSharp.NamedExpression namedExpression, object data)
{
Expression expr = new FieldInitializerExpression {
IsKey = true,
Identifier = namedExpression.Name,
Expression = (Expression)namedExpression.Expression.AcceptVisitor(this, data)
};
return EndNode(namedExpression, expr);
}
public AstNode VisitNullReferenceExpression(CSharp.NullReferenceExpression nullReferenceExpression, object data)
{
return EndNode(nullReferenceExpression, new PrimitiveExpression(null));
}
public AstNode VisitObjectCreateExpression(CSharp.ObjectCreateExpression objectCreateExpression, object data)
{
var expr = new ObjectCreationExpression((AstType)objectCreateExpression.Type.AcceptVisitor(this, data));
ConvertNodes(objectCreateExpression.Arguments, expr.Arguments);
if (!objectCreateExpression.Initializer.IsNull)
expr.Initializer = (ArrayInitializerExpression)objectCreateExpression.Initializer.AcceptVisitor(this, data);
return EndNode(objectCreateExpression, expr);
}
public AstNode VisitAnonymousTypeCreateExpression(CSharp.AnonymousTypeCreateExpression anonymousTypeCreateExpression, object data)
{
var expr = new AnonymousObjectCreationExpression();
ConvertNodes(anonymousTypeCreateExpression.Initializers, expr.Initializer);
return EndNode(anonymousTypeCreateExpression, expr);
}
public AstNode VisitParenthesizedExpression(CSharp.ParenthesizedExpression parenthesizedExpression, object data)
{
var result = new ParenthesizedExpression();
result.Expression = (Expression)parenthesizedExpression.Expression.AcceptVisitor(this, data);
return EndNode(parenthesizedExpression, result);
}
public AstNode VisitPointerReferenceExpression(CSharp.PointerReferenceExpression pointerReferenceExpression, object data)
{
return EndNode(pointerReferenceExpression,((Expression)pointerReferenceExpression.Target.AcceptVisitor(this, data)).Invoke("Dereference").Member(pointerReferenceExpression.MemberName));
}
public AstNode VisitPrimitiveExpression(CSharp.PrimitiveExpression primitiveExpression, object data)
{
Expression expr;
if (!string.IsNullOrEmpty(primitiveExpression.Value as string) || primitiveExpression.Value is char)
expr = ConvertToConcat(primitiveExpression.Value.ToString());
else
expr = new PrimitiveExpression(primitiveExpression.Value);
return EndNode(primitiveExpression, expr);
}
Expression ConvertToConcat(string literal)
{
Stack<Expression> parts = new Stack<Expression>();
int start = 0;
for (int i = 0; i < literal.Length; i++) {
string part;
switch (literal[i]) {
case '\0':
part = literal.Substring(start, i - start);
if (!string.IsNullOrEmpty(part))
parts.Push(new PrimitiveExpression(part));
parts.Push(new IdentifierExpression("vbNullChar"));
start = i + 1;
break;
case '\b':
part = literal.Substring(start, i - start);
if (!string.IsNullOrEmpty(part))
parts.Push(new PrimitiveExpression(part));
parts.Push(new IdentifierExpression("vbBack"));
start = i + 1;
break;
case '\f':
part = literal.Substring(start, i - start);
if (!string.IsNullOrEmpty(part))
parts.Push(new PrimitiveExpression(part));
parts.Push(new IdentifierExpression("vbFormFeed"));
start = i + 1;
break;
case '\r':
part = literal.Substring(start, i - start);
if (!string.IsNullOrEmpty(part))
parts.Push(new PrimitiveExpression(part));
if (i + 1 < literal.Length && literal[i + 1] == '\n') {
i++;
parts.Push(new IdentifierExpression("vbCrLf"));
} else
parts.Push(new IdentifierExpression("vbCr"));
start = i + 1;
break;
case '\n':
part = literal.Substring(start, i - start);
if (!string.IsNullOrEmpty(part))
parts.Push(new PrimitiveExpression(part));
parts.Push(new IdentifierExpression("vbLf"));
start = i + 1;
break;
case '\t':
part = literal.Substring(start, i - start);
if (!string.IsNullOrEmpty(part))
parts.Push(new PrimitiveExpression(part));
parts.Push(new IdentifierExpression("vbTab"));
start = i + 1;
break;
case '\v':
part = literal.Substring(start, i - start);
if (!string.IsNullOrEmpty(part))
parts.Push(new PrimitiveExpression(part));
parts.Push(new IdentifierExpression("vbVerticalTab"));
start = i + 1;
break;
default:
if ((int)literal[i] > 255) {
part = literal.Substring(start, i - start);
if (!string.IsNullOrEmpty(part))
parts.Push(new PrimitiveExpression(part));
parts.Push(new InvocationExpression(new IdentifierExpression("ChrW"), new PrimitiveExpression((int)literal[i])));
} else
continue;
start = i + 1;
break;
}
}
if (start < literal.Length) {
string part = literal.Substring(start);
parts.Push(new PrimitiveExpression(part));
}
Expression current = parts.Pop();
while (parts.Any())
current = new BinaryOperatorExpression(parts.Pop(), BinaryOperatorType.Concat, current);
return current;
}
public AstNode VisitSizeOfExpression(CSharp.SizeOfExpression sizeOfExpression, object data)
{
return EndNode(
sizeOfExpression,
new InvocationExpression(
new IdentifierExpression() { Identifier = "__SizeOf" },
new TypeReferenceExpression((AstType)sizeOfExpression.Type.AcceptVisitor(this, data))
)
);
}
public AstNode VisitStackAllocExpression(CSharp.StackAllocExpression stackAllocExpression, object data)
{
return EndNode(
stackAllocExpression,
new InvocationExpression(
new IdentifierExpression() { Identifier = "__StackĄlloc" },
new TypeReferenceExpression((AstType)stackAllocExpression.Type.AcceptVisitor(this, data)),
(Expression)stackAllocExpression.CountExpression.AcceptVisitor(this, data)
)
);
}
public AstNode VisitThisReferenceExpression(CSharp.ThisReferenceExpression thisReferenceExpression, object data)
{
InstanceExpression result = new InstanceExpression(InstanceExpressionType.Me, thisReferenceExpression.StartLocation);
return EndNode(thisReferenceExpression, result);
}
public AstNode VisitTypeOfExpression(CSharp.TypeOfExpression typeOfExpression, object data)
{
var expr = new GetTypeExpression();
expr.Type = (AstType)typeOfExpression.Type.AcceptVisitor(this, data);
return EndNode(typeOfExpression, expr);
}
public AstNode VisitTypeReferenceExpression(CSharp.TypeReferenceExpression typeReferenceExpression, object data)
{
var expr = new TypeReferenceExpression((AstType)typeReferenceExpression.Type.AcceptVisitor(this, data));
return EndNode(typeReferenceExpression, expr);
}
public AstNode VisitUnaryOperatorExpression(CSharp.UnaryOperatorExpression unaryOperatorExpression, object data)
{
Expression expr;
switch (unaryOperatorExpression.Operator) {
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.Not:
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.BitNot:
expr = new UnaryOperatorExpression() {
Expression = (Expression)unaryOperatorExpression.Expression.AcceptVisitor(this, data),
Operator = UnaryOperatorType.Not
};
break;
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.Minus:
expr = new UnaryOperatorExpression() {
Expression = (Expression)unaryOperatorExpression.Expression.AcceptVisitor(this, data),
Operator = UnaryOperatorType.Minus
};
break;
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.Plus:
expr = new UnaryOperatorExpression() {
Expression = (Expression)unaryOperatorExpression.Expression.AcceptVisitor(this, data),
Operator = UnaryOperatorType.Plus
};
break;
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.Increment:
expr = new InvocationExpression();
((InvocationExpression)expr).Target = new IdentifierExpression() { Identifier = "__Increment" };
((InvocationExpression)expr).Arguments.Add((Expression)unaryOperatorExpression.Expression.AcceptVisitor(this, data));
break;
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.PostIncrement:
expr = new InvocationExpression();
((InvocationExpression)expr).Target = new IdentifierExpression() { Identifier = "__PostIncrement" };
((InvocationExpression)expr).Arguments.Add((Expression)unaryOperatorExpression.Expression.AcceptVisitor(this, data));
break;
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.Decrement:
expr = new InvocationExpression();
((InvocationExpression)expr).Target = new IdentifierExpression() { Identifier = "__Decrement" };
((InvocationExpression)expr).Arguments.Add((Expression)unaryOperatorExpression.Expression.AcceptVisitor(this, data));
break;
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.PostDecrement:
expr = new InvocationExpression();
((InvocationExpression)expr).Target = new IdentifierExpression() { Identifier = "__PostDecrement" };
((InvocationExpression)expr).Arguments.Add((Expression)unaryOperatorExpression.Expression.AcceptVisitor(this, data));
break;
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.AddressOf:
expr = new UnaryOperatorExpression() {
Expression = (Expression)unaryOperatorExpression.Expression.AcceptVisitor(this, data),
Operator = UnaryOperatorType.AddressOf
};
break;
case ICSharpCode.NRefactory.CSharp.UnaryOperatorType.Dereference:
expr = new InvocationExpression();
((InvocationExpression)expr).Target = new IdentifierExpression() { Identifier = "__Dereference" };
((InvocationExpression)expr).Arguments.Add((Expression)unaryOperatorExpression.Expression.AcceptVisitor(this, data));
break;
default:
throw new Exception("Invalid value for UnaryOperatorType");
}
return EndNode(unaryOperatorExpression, expr);
}
public AstNode VisitUncheckedExpression(CSharp.UncheckedExpression uncheckedExpression, object data)
{
blocks.Peek().AddChild(new Comment(" The following expression was wrapped in a unchecked-expression", false), AstNode.Roles.Comment);
return EndNode(uncheckedExpression, uncheckedExpression.Expression.AcceptVisitor(this, data));
}
public AstNode VisitEmptyExpression(CSharp.EmptyExpression emptyExpression, object data)
{
return EndNode(emptyExpression, new EmptyExpression());
}
public AstNode VisitQueryExpression(CSharp.QueryExpression queryExpression, object data)
{
var expr = new QueryExpression();
ConvertNodes(queryExpression.Clauses, expr.QueryOperators);
return EndNode(queryExpression, expr);
}
public AstNode VisitQueryContinuationClause(CSharp.QueryContinuationClause queryContinuationClause, object data)
{
throw new NotImplementedException();
}
public AstNode VisitQueryFromClause(CSharp.QueryFromClause queryFromClause, object data)
{
var op = new FromQueryOperator();
op.Variables.Add(
new CollectionRangeVariableDeclaration {
Identifier = new VariableIdentifier { Name = queryFromClause.Identifier },
Type = (AstType)queryFromClause.Type.AcceptVisitor(this, data),
Expression = (Expression)queryFromClause.Expression.AcceptVisitor(this, data)
}
);
return EndNode(queryFromClause, op);
}
public AstNode VisitQueryLetClause(CSharp.QueryLetClause queryLetClause, object data)
{
throw new NotImplementedException();
}
public AstNode VisitQueryWhereClause(CSharp.QueryWhereClause queryWhereClause, object data)
{
throw new NotImplementedException();
}
public AstNode VisitQueryJoinClause(CSharp.QueryJoinClause queryJoinClause, object data)
{
throw new NotImplementedException();
}
public AstNode VisitQueryOrderClause(CSharp.QueryOrderClause queryOrderClause, object data)
{
var op = new OrderByQueryOperator();
ConvertNodes(queryOrderClause.Orderings, op.Expressions);
return EndNode(queryOrderClause, op);
}
public AstNode VisitQueryOrdering(CSharp.QueryOrdering queryOrdering, object data)
{
var expr = new OrderExpression();
expr.Direction = (QueryOrderingDirection)queryOrdering.Direction;
expr.Expression = (Expression)queryOrdering.Expression.AcceptVisitor(this, data);
return EndNode(queryOrdering, expr);
}
int selectVarCount = 0;
public AstNode VisitQuerySelectClause(CSharp.QuerySelectClause querySelectClause, object data)
{
var op = new SelectQueryOperator();
op.Variables.Add(
new VariableInitializer {
Identifier = new VariableIdentifier { Name = "SelectVar" + selectVarCount },
Expression = (Expression)querySelectClause.Expression.AcceptVisitor(this, data)
});
return EndNode(querySelectClause, op);
}
public AstNode VisitQueryGroupClause(CSharp.QueryGroupClause queryGroupClause, object data)
{
var op = new GroupByQueryOperator();
throw new NotImplementedException();
return EndNode(queryGroupClause, op);
}
public AstNode VisitAttribute(CSharp.Attribute attribute, object data)
{
var attr = new VB.Ast.Attribute();
AttributeTarget target;
Enum.TryParse(((CSharp.AttributeSection)attribute.Parent).AttributeTarget, true, out target);
attr.Target = target;
attr.Type = (AstType)attribute.Type.AcceptVisitor(this, data);
ConvertNodes(attribute.Arguments, attr.Arguments);
return EndNode(attribute, attr);
}
public AstNode VisitAttributeSection(CSharp.AttributeSection attributeSection, object data)
{
AttributeBlock block = new AttributeBlock();
ConvertNodes(attributeSection.Attributes, block.Attributes);
return EndNode(attributeSection, block);
}
public AstNode VisitDelegateDeclaration(CSharp.DelegateDeclaration delegateDeclaration, object data)
{
var result = new DelegateDeclaration();
ConvertNodes(delegateDeclaration.Attributes.Where(section => section.AttributeTarget != "return"), result.Attributes);
ConvertNodes(delegateDeclaration.ModifierTokens, result.ModifierTokens);
result.Name = new Identifier(delegateDeclaration.Name, TextLocation.Empty);
result.IsSub = IsSub(delegateDeclaration.ReturnType);
ConvertNodes(delegateDeclaration.Parameters, result.Parameters);
ConvertNodes(delegateDeclaration.TypeParameters, result.TypeParameters);
ConvertNodes(delegateDeclaration.Attributes.Where(section => section.AttributeTarget == "return"), result.ReturnTypeAttributes);
if (!result.IsSub)
result.ReturnType = (AstType)delegateDeclaration.ReturnType.AcceptVisitor(this, data);
return EndNode(delegateDeclaration, result);
}
public AstNode VisitNamespaceDeclaration(CSharp.NamespaceDeclaration namespaceDeclaration, object data)
{
var newNamespace = new NamespaceDeclaration();
ConvertNodes(namespaceDeclaration.Identifiers, newNamespace.Identifiers);
ConvertNodes(namespaceDeclaration.Members, newNamespace.Members);
return EndNode(namespaceDeclaration, newNamespace);
}
public AstNode VisitTypeDeclaration(CSharp.TypeDeclaration typeDeclaration, object data)
{
// TODO add missing features!
if (typeDeclaration.ClassType == CSharp.ClassType.Enum) {
var type = new EnumDeclaration();
CopyAnnotations(typeDeclaration, type);
ConvertNodes(typeDeclaration.Attributes, type.Attributes);
ConvertNodes(typeDeclaration.ModifierTokens, type.ModifierTokens);
if (typeDeclaration.BaseTypes.Any()) {
var first = typeDeclaration.BaseTypes.First();
type.UnderlyingType = (AstType)first.AcceptVisitor(this, data);
}
type.Name = new Identifier(typeDeclaration.Name, TextLocation.Empty);
ConvertNodes(typeDeclaration.Members, type.Members);
return EndNode(typeDeclaration, type);
} else {
var type = new TypeDeclaration();
CopyAnnotations(typeDeclaration, type);
CSharp.Attribute stdModAttr;
if (typeDeclaration.ClassType == CSharp.ClassType.Class && HasAttribute(typeDeclaration.Attributes, "Microsoft.VisualBasic.CompilerServices.StandardModuleAttribute", out stdModAttr)) {
type.ClassType = ClassType.Module;
// remove AttributeSection if only one attribute is present
var attrSec = (CSharp.AttributeSection)stdModAttr.Parent;
if (attrSec.Attributes.Count == 1)
attrSec.Remove();
else
stdModAttr.Remove();
} else {
switch (typeDeclaration.ClassType) {
case CSharp.ClassType.Class:
type.ClassType = ClassType.Class;
break;
case CSharp.ClassType.Struct:
type.ClassType = ClassType.Struct;
break;
case CSharp.ClassType.Interface:
type.ClassType = ClassType.Interface;
break;
default:
throw new InvalidOperationException("Invalid value for ClassType");
}
}
if ((typeDeclaration.Modifiers & CSharp.Modifiers.Static) == CSharp.Modifiers.Static) {
type.ClassType = ClassType.Module;
typeDeclaration.Modifiers &= ~CSharp.Modifiers.Static;
}
ConvertNodes(typeDeclaration.Attributes, type.Attributes);
ConvertNodes(typeDeclaration.ModifierTokens, type.ModifierTokens);
if (typeDeclaration.BaseTypes.Any()) {
var first = typeDeclaration.BaseTypes.First();
if (provider.GetTypeKindForAstType(first) != TypeKind.Interface) {
ConvertNodes(typeDeclaration.BaseTypes.Skip(1), type.ImplementsTypes);
type.InheritsType = (AstType)first.AcceptVisitor(this, data);
} else
ConvertNodes(typeDeclaration.BaseTypes, type.ImplementsTypes);
}
type.Name = typeDeclaration.Name;
types.Push(type);
ConvertNodes(typeDeclaration.Members, type.Members);
types.Pop();
return EndNode(typeDeclaration, type);
}
}
public AstNode VisitUsingAliasDeclaration(CSharp.UsingAliasDeclaration usingAliasDeclaration, object data)
{
var imports = new ImportsStatement();
var clause = new AliasImportsClause() {
Name = new Identifier(usingAliasDeclaration.Alias, TextLocation.Empty),
Alias = (AstType)usingAliasDeclaration.Import.AcceptVisitor(this, data)
};
imports.AddChild(clause, ImportsStatement.ImportsClauseRole);
return EndNode(usingAliasDeclaration, imports);
}
public AstNode VisitUsingDeclaration(CSharp.UsingDeclaration usingDeclaration, object data)
{
var imports = new ImportsStatement();
var clause = new MemberImportsClause() {
Member = (AstType)usingDeclaration.Import.AcceptVisitor(this, data)
};
imports.AddChild(clause, ImportsStatement.ImportsClauseRole);
return EndNode(usingDeclaration, imports);
}
public AstNode VisitExternAliasDeclaration(CSharp.ExternAliasDeclaration externAliasDeclaration, object data)
{
throw new NotImplementedException();
}
public AstNode VisitBlockStatement(CSharp.BlockStatement blockStatement, object data)
{
var block = new BlockStatement();
blocks.Push(block);
ConvertNodes(blockStatement, block.Statements);
blocks.Pop();
return EndNode(blockStatement, block);
}
public AstNode VisitBreakStatement(CSharp.BreakStatement breakStatement, object data)
{
var exit = new ExitStatement(ExitKind.None);
foreach (var stmt in breakStatement.Ancestors) {
if (stmt is CSharp.MethodDeclaration) {
exit.ExitKind = IsSub(((CSharp.MethodDeclaration)stmt).ReturnType) ? ExitKind.Sub : ExitKind.Function;
break;
}
if (stmt is CSharp.PropertyDeclaration) {
exit.ExitKind = ExitKind.Property;
break;
}
if (stmt is CSharp.DoWhileStatement) {
exit.ExitKind = ExitKind.Do;
break;
}
if (stmt is CSharp.ForStatement || stmt is CSharp.ForeachStatement) {
exit.ExitKind = ExitKind.For;
break;
}
if (stmt is CSharp.WhileStatement) {
exit.ExitKind = ExitKind.While;
break;
}
if (stmt is CSharp.SwitchStatement) {
exit.ExitKind = ExitKind.Select;
break;
}
if (stmt is CSharp.TryCatchStatement) {
exit.ExitKind = ExitKind.Try;
break;
}
}
return EndNode(breakStatement, exit);
}
public AstNode VisitCheckedStatement(CSharp.CheckedStatement checkedStatement, object data)
{
blocks.Peek().AddChild(new Comment(" The following expression was wrapped in a checked-statement", false), AstNode.Roles.Comment);
var body = (BlockStatement)checkedStatement.Body.AcceptVisitor(this, data);
foreach (var stmt in body) {
stmt.Remove();
blocks.Peek().Add(stmt);
}
return EndNode<AstNode>(checkedStatement, null);
}
public AstNode VisitContinueStatement(CSharp.ContinueStatement continueStatement, object data)
{
var @continue = new ContinueStatement(ContinueKind.None);
foreach (var stmt in continueStatement.Ancestors) {
if (stmt is CSharp.DoWhileStatement) {
@continue.ContinueKind = ContinueKind.Do;
break;