public void AddCatchVariable(string variableName)
{
if (Node is IGeneralCatchClause)
{
if (HasVariable)
{
return;
}
if (String.IsNullOrEmpty(variableName))
{
variableName = NameFactory.CatchVariableName(Node, CaughtException);
}
var codeFactory = new CodeElementFactory(GetElementFactory());
var newCatch = codeFactory.CreateSpecificCatchClause(null, Node.Body, variableName);
if (newCatch == null)
{
return;
}
Node.ReplaceBy(newCatch);
Node = newCatch;
Variable = new CatchVariableModel(AnalyzeUnit, newCatch.ExceptionDeclaration as ICatchVariableDeclaration);
}
else
{
if (HasVariable)
{
return;
}
if (String.IsNullOrEmpty(variableName))
{
variableName = NameFactory.CatchVariableName(Node, CaughtException);
}
var specificNode = (ISpecificCatchClause)Node;
var exceptionType = (IUserDeclaredTypeUsage)specificNode.ExceptionTypeUsage;
var exceptionTypeName = exceptionType.TypeName.NameIdentifier.Name;
var tempTry = GetElementFactory().CreateStatement("try {} catch($0 $1) {}", exceptionTypeName, variableName) as ITryStatement;
if (tempTry == null)
{
return;
}
var tempCatch = tempTry.Catches[0] as ISpecificCatchClause;
if (tempCatch == null)
{
return;
}
var resultVariable = specificNode.SetExceptionDeclaration(tempCatch.ExceptionDeclaration);
Variable = new CatchVariableModel(AnalyzeUnit, resultVariable);
}
}
/// <summary>Adds a catch clause to the try statement. </summary>
/// <param name="exceptionType">The exception type in the added catch clause. </param>
public void AddCatchClause(IDeclaredType exceptionType)
{
var codeElementFactory = new CodeElementFactory(GetElementFactory());
var variableName = NameFactory.CatchVariableName(Node, exceptionType);
var catchClauseNode = codeElementFactory.CreateSpecificCatchClause(exceptionType, null, variableName);
Node.AddCatchClause(catchClauseNode);
}
/// <summary>Creates a try-catch block around this block. </summary>
/// <param name="exceptionType">The exception type to catch. </param>
/// <returns><c>true</c> if the try-catch block could be created; otherwise, <c>false</c>. </returns>
public bool SurroundWithTryBlock(IDeclaredType exceptionType)
{
var codeElementFactory = new CodeElementFactory(GetElementFactory());
var exceptionVariableName = NameFactory.CatchVariableName(Node, exceptionType);
var tryStatement = codeElementFactory.CreateTryStatement(exceptionType, exceptionVariableName, Node);
var block = codeElementFactory.CreateBlock(Node);
tryStatement.SetTry(block);
Node.ReplaceBy(tryStatement);
return(true);
}
/// <summary>Creates a try-catch block around this block. </summary>
/// <param name="exceptionType">The exception type to catch. </param>
/// <returns><c>true</c> if the try-catch block could be created; otherwise, <c>false</c>. </returns>
public bool SurroundWithTryBlock(IDeclaredType exceptionType)
{
var containingStatement = Node.GetContainingStatement();
if (containingStatement != null && containingStatement.LastChild != null)
{
var codeElementFactory = new CodeElementFactory(GetElementFactory());
var exceptionVariableName = NameFactory.CatchVariableName(Node, exceptionType);
var tryStatement = codeElementFactory.CreateTryStatement(exceptionType, exceptionVariableName, Node);
var spaces = GetElementFactory().CreateWhitespaces(Environment.NewLine);
LowLevelModificationUtil.AddChildAfter(containingStatement.LastChild, spaces[0]);
var block = codeElementFactory.CreateBlock(containingStatement);
tryStatement.SetTry(block);
containingStatement.ReplaceBy(tryStatement);
return(true);
}
return(false);
}
