//The following method does not check the validaity of the span
public static Expression AddDebugInfo(Expression expression, SymbolDocumentInfo document, int startLine, int startColumn, int endLine, int endColumn)
{
if (expression == null)
{
throw new System.ArgumentNullException("expression");
}
var sequencePoint = Expression.DebugInfo(document,
startLine, startColumn, endLine, endColumn);
var clearance = Expression.ClearDebugInfo(document);
//always attach a clearance
if (expression.Type == typeof(void))
{
return(Expression.Block(
sequencePoint,
expression,
clearance
));
}
else
{
//save the expression to a variable
var p = Expression.Parameter(expression.Type, null);
return(Expression.Block(
new[] { p },
sequencePoint,
Expression.Assign(p, expression),
clearance,
p
));
}
}
