public override void VisitLocalDeclarationStatement(LocalDeclarationStatementSyntax node)
{
if (node.Declaration.Variables.Count != 1)
{
// unexpected case
throw new NotSupportedException();
}
VariableDeclaratorSyntax variable = node.Declaration.Variables[0];
String variableId = variable.Identifier.Text;
if (variableId != VariableName)
{
// unexpected case
throw new NotSupportedException();
}
IList <SyntaxNode> variableChildren = variable.ChildNodes().ToList();
if (variableChildren.Count == 1 && variableChildren[0] is EqualsValueClauseSyntax)
{
EqualsValueClauseSyntax value = (EqualsValueClauseSyntax)variableChildren[0];
FrameStack.Peek().States.Clear();
FrameStack.Peek().States.Add(new ExecutionState(Int32.Parse(value.Value.GetText().ToString())));
}
base.VisitLocalDeclarationStatement(node);
}
private void ProcessLocalDeclaration(LocalDeclarationStatementSyntax localDeclaration, Stack <ExecutionFrame> frameStack)
{
if (localDeclaration.Declaration.Variables.Count != 1)
{
// unexpected case
throw new NotSupportedException();
}
VariableDeclaratorSyntax variable = localDeclaration.Declaration.Variables[0];
String variableId = variable.Identifier.Text;
if (variableId != VariableName)
{
// unexpected case
throw new NotSupportedException();
}
IList <SyntaxNode> variableChildren = variable.ChildNodes().ToList();
if (variableChildren.Count == 1 && variableChildren[0] is EqualsValueClauseSyntax)
{
EqualsValueClauseSyntax value = (EqualsValueClauseSyntax)variableChildren[0];
frameStack.Peek().States.Clear();
frameStack.Peek().States.Add(new ExecutionState(Int32.Parse(value.Value.GetText().ToString())));
}
}
/// <summary>
/// Gets the target of the provided <paramref name="expression"/> using the provided <paramref name="symbol"/> and <paramref name="model"/>.
/// </summary>
/// <param name="expression">An <see cref="InvocationExpressionSyntax"/> instance describing the invocation of a particular method.</param>
/// <param name="symbol">An <see cref="IMethodSymbol"/> describing the method being invoked by the <paramref name="expression"/>.</param>
/// <param name="model">A <see cref="SemanticModel"/> that can be used to resolve type information.</param>
/// <param name="context">An <see cref="InvokedMethod"/> that represents the context in which to determine the target of the invocation.</param>
/// <returns>Returns a <see cref="TypeInfo"/> instance representing the type of the target being invoked, or <c>null</c> if the type could not be determined.</returns>
public static TypeInfo?GetTargetOfInvocation(this InvocationExpressionSyntax expression, IMethodSymbol symbol, SemanticModel model, InvokedMethod context)
{
TypeInfo?targetTypeInfo = expression.Expression.Kind() == SyntaxKind.IdentifierName ? context.TargetType : expression.GetTargetType(model, context);
if (targetTypeInfo.HasValue)
{
MemberAccessExpressionSyntax memberAccess = expression.Expression as MemberAccessExpressionSyntax;
IdentifierNameSyntax identifier = memberAccess?.Expression as IdentifierNameSyntax ?? expression.Expression as IdentifierNameSyntax;
if (identifier != null)
{
SymbolInfo identifierSymbol = model.GetSymbolInfo(identifier);
switch (identifierSymbol.Symbol.Kind)
{
case SymbolKind.Local:
VariableDeclaratorSyntax syntax = identifierSymbol.Symbol.GetComparableSyntax()?.GetSyntax() as VariableDeclaratorSyntax;
if (syntax != null && syntax.ChildNodes().Any())
{
targetTypeInfo = model.GetTypeInfo(syntax.ChildNodes().First().ChildNodes().First());
}
break;
case SymbolKind.Parameter:
if (context.Method != null)
{
var parameter = context.Method.Parameters.FirstOrDefault(p => p.Name == identifierSymbol.Symbol.Name);
var parameterIndex = context.Method.Parameters.IndexOf(parameter);
targetTypeInfo = context.ArgumentTypes.ElementAt(parameterIndex);
}
break;
case SymbolKind.Field:
SyntaxNode node = expression.Parent;
while (!(node is BlockSyntax))
{
node = node.Parent;
}
var statementsInBlock = node.ChildNodes().ToList();
var currentStatementIndex = statementsInBlock.IndexOf(expression.Parent);
var assignments = statementsInBlock.Take(currentStatementIndex)
.OfType <ExpressionStatementSyntax>()
.Where(s => s.Expression.IsKind(SyntaxKind.SimpleAssignmentExpression))
.Select(s => s.Expression as AssignmentExpressionSyntax)
.Where(s => model.GetSymbolInfo(s.Left).Symbol == identifierSymbol.Symbol);
AssignmentExpressionSyntax lastAssignment = assignments.LastOrDefault();
if (lastAssignment != null)
{
targetTypeInfo = model.GetTypeInfo(lastAssignment.Right);
}
break;
default:
break;
}
}
}
return(targetTypeInfo);
}
private Method TraverseVarDeclarators(VariableDeclaratorSyntax vds)
{
Method retMethod = new Method();
Variables retVar = new Variables();
if (vds.HasLeadingTrivia)
{
SetOuterComments(retVar, vds.GetLeadingTrivia().ToFullString());
}
if (vds.HasTrailingTrivia)
{
SetInnerComments(retVar, vds.GetTrailingTrivia().ToFullString());
}
retVar.Name = vds.Identifier.ValueText;
Model.Type retType = new Model.Type();
retType.IsKnownType = SyntaxFacts.IsKeywordKind(vds.CSharpKind());
retType.IsNotUserDefined = SyntaxFacts.IsKeywordKind(vds.CSharpKind());
retVar.Type = retType;
retMethod.AccessedVariables.Add(retVar);
var valueClauses = from aValueClase in vds.ChildNodes().OfType<EqualsValueClauseSyntax>() select aValueClase;
foreach (EqualsValueClauseSyntax evcs in valueClauses)
{
retMethod.AccessedVariables.AddRange(TraverseEqualsClause(evcs).AccessedVariables);
}
//TODO
//Don't know if I need more stuff here
//or even if i can fetch it from vds
return retMethod;
}