protected ExpressionSyntax RewritePostfixUnarys(ExpressionSyntax node)
{
var expressions = node.DescendentNodesAndSelf().OfType<PostfixUnaryExpressionSyntax>().ToArray();
if (expressions.Length == 0)
return node;
List<string> names = new List<string> (expressions.Length);
foreach (var expr in expressions)
{
if (expr.Kind != SyntaxKind.PostIncrementExpression && expr.Kind != SyntaxKind.PostDecrementExpression)
continue; // These aren't the droids we're looking for.
IdentifierNameSyntax name = FindIdentifierName (expr);
if (name == null)
continue; // We didn't find a name
if (names.Contains (name.PlainName))
{
var newExpr = GetLogExpression (name.PlainName, expr);
node = node.ReplaceNode (expr, newExpr);
}
else
names.Add (name.PlainName);
}
// We'll use a string builder construct our expression.
StringBuilder builder = new StringBuilder ("LogPostfixValues ((");
builder.Append (node.ToString());
builder.Append ("), ");
bool found = false;
foreach (string name in names)
{
if (found)
builder.Append (", ");
// We need to specify our generic types so we match
// the params argument type
builder.Append ("new Tuple<string, object> (\"");
builder.Append (name);
builder.Append ("\", ");
builder.Append (name);
builder.Append (")");
found = true;
}
if (!found)
return node; // We didn't find any usable expressions
builder.Append (")");
// Parse and return our new expression.
return Syntax.ParseExpression (builder.ToString());
}
protected ExpressionSyntax RewritePostfixUnarys(ExpressionSyntax node)
{
var expressions = node.DescendentNodesAndSelf().OfType <PostfixUnaryExpressionSyntax>().ToArray();
if (expressions.Length == 0)
{
return(node);
}
List <string> names = new List <string> (expressions.Length);
foreach (var expr in expressions)
{
if (expr.Kind != SyntaxKind.PostIncrementExpression && expr.Kind != SyntaxKind.PostDecrementExpression)
{
continue; // These aren't the droids we're looking for.
}
IdentifierNameSyntax name = FindIdentifierName(expr);
if (name == null)
{
continue; // We didn't find a name
}
if (names.Contains(name.PlainName))
{
var newExpr = GetLogExpression(name.PlainName, expr);
node = node.ReplaceNode(expr, newExpr);
}
else
{
names.Add(name.PlainName);
}
}
// We'll use a string builder construct our expression.
StringBuilder builder = new StringBuilder("LogPostfixValues ((");
builder.Append(node.ToString());
builder.Append("), ");
bool found = false;
foreach (string name in names)
{
if (found)
{
builder.Append(", ");
}
// We need to specify our generic types so we match
// the params argument type
builder.Append("new Tuple<string, object> (\"");
builder.Append(name);
builder.Append("\", ");
builder.Append(name);
builder.Append(")");
found = true;
}
if (!found)
{
return(node); // We didn't find any usable expressions
}
builder.Append(")");
// Parse and return our new expression.
return(Syntax.ParseExpression(builder.ToString()));
}
