private bool IsDelegateOperationStatement(Statement statement, string operationName,
out Expression newValueHolder, out Expression oldValueHolder)
{
newValueHolder = null;
oldValueHolder = null;
if (!statement.IsAssignmentStatement())
{
return false;
}
BinaryExpression assignExpression = (statement as ExpressionStatement).Expression as BinaryExpression;
if (assignExpression.Right.CodeNodeType != CodeNodeType.CastExpression ||
(assignExpression.Right as CastExpression).Expression.CodeNodeType != CodeNodeType.MethodInvocationExpression)
{
return false;
}
MethodInvocationExpression methodInvokeExpr = (assignExpression.Right as CastExpression).Expression as MethodInvocationExpression;
if (methodInvokeExpr.Arguments.Count != 2 || methodInvokeExpr.MethodExpression.Method.HasThis ||
methodInvokeExpr.MethodExpression.Method.DeclaringType.FullName != "System.Delegate" || methodInvokeExpr.MethodExpression.Method.Name != operationName)
{
return false;
}
if (methodInvokeExpr.Arguments[1].CodeNodeType != CodeNodeType.ArgumentReferenceExpression)
{
return false;
}
newValueHolder = assignExpression.Left;
oldValueHolder = methodInvokeExpr.Arguments[0];
return true;
}
private int CheckNewArrayInitializationAndSize(Statement statement, VariableReference arrayVariable)
{
if (!statement.IsAssignmentStatement())
{
throw new Exception(InvalidStatementExceptionString);
}
BinaryExpression arrayInitialization = (statement as ExpressionStatement).Expression as BinaryExpression;
if (arrayInitialization.Left.CodeNodeType != CodeNodeType.VariableReferenceExpression ||
(arrayInitialization.Left as VariableReferenceExpression).Variable != arrayVariable)
{
throw new Exception(InvalidStatementExceptionString);
}
if (arrayInitialization.Right.CodeNodeType != CodeNodeType.ArrayCreationExpression ||
(arrayInitialization.Right as ArrayCreationExpression).Dimensions.Count != 1 ||
(arrayInitialization.Right as ArrayCreationExpression).Dimensions[0].CodeNodeType != CodeNodeType.LiteralExpression)
{
throw new Exception(InvalidStatementExceptionString);
}
return Convert.ToInt32(((arrayInitialization.Right as ArrayCreationExpression).Dimensions[0] as LiteralExpression).Value);
}