public void RenderExpression(ExpressionTreeNode node)
{
expressionTreeView.Nodes.Add(GetTreeNode(node));
expressionTreeView.ExpandAll();
}
private TreeNode GetTreeNode(ExpressionTreeNode node)
{
var treeNode = new TreeNode(node.Text) { Tag = node.ExpressionString };
node.Nodes.ForEach(n => treeNode.Nodes.Add(this.GetTreeNode(n)));
return treeNode;
}
public static ExpressionTreeNode GetExpressionTreeNode(Expression expression, string prefix = null)
{
ExpressionTreeNode node = null;
if (expression is BinaryExpression)
{
var expr = expression as BinaryExpression;
node = new ExpressionTreeNode(string.Format("BinaryExpression: [{0}]", expr.NodeType));
node.Nodes.Add(GetExpressionTreeNode(expr.Left, "Left"));
node.Nodes.Add(GetExpressionTreeNode(expr.Right, "Right"));
}
if (expression is BlockExpression)
{
var expr = expression as BlockExpression;
node = new ExpressionTreeNode(string.Format("BlockExpression Expressions:"));
expr.Expressions.ToList().ForEach(a => node.Nodes.Add(GetExpressionTreeNode(a)));
}
if (expression is ConditionalExpression)
{
var expr = expression as ConditionalExpression;
node = new ExpressionTreeNode(string.Format("ConditionalExpression: [{0}]", expr.NodeType));
node.Nodes.Add(GetExpressionTreeNode(expr.Test, "Test"));
node.Nodes.Add(GetExpressionTreeNode(expr.IfTrue, "IfTrue"));
node.Nodes.Add(GetExpressionTreeNode(expr.IfFalse, "IfFalse"));
}
if (expression is ConstantExpression)
{
var expr = expression as ConstantExpression;
node = new ExpressionTreeNode(string.Format("ConstantExpression [{0}]: {1}", expr.Type.Name, expr.Value));
}
if (expression is DebugInfoExpression)
{
var expr = expression as DebugInfoExpression;
}
if (expression is DefaultExpression)
{
var expr = expression as DefaultExpression;
node = new ExpressionTreeNode(string.Format("DefaultExpression: [{0}]", expr.Type.Name));
}
if (expression is DynamicExpression)
{
var expr = expression as DynamicExpression;
node = new ExpressionTreeNode(string.Format("DynamicExpression [{0}] Arguments:", expr.DelegateType.Name));
expr.Arguments.ToList().ForEach(a => node.Nodes.Add(GetExpressionTreeNode(a)));
}
if (expression is GotoExpression)
{
var expr = expression as GotoExpression;
}
if (expression is IndexExpression)
{
var expr = expression as IndexExpression;
node = new ExpressionTreeNode(string.Format("IndexExpression [{0}] Arguments:", expr.Indexer.Name));
expr.Arguments.ToList().ForEach(a => node.Nodes.Add(GetExpressionTreeNode(a)));
}
if (expression is InvocationExpression)
{
var expr = expression as InvocationExpression;
node = new ExpressionTreeNode(string.Format("InvocationExpression [{0}] Arguments:", expr.Expression));
expr.Arguments.ToList().ForEach(a => node.Nodes.Add(GetExpressionTreeNode(a)));
node.Nodes.Add(GetExpressionTreeNode(expr.Expression, "Expression"));
}
if (expression is LabelExpression)
{
var expr = expression as LabelExpression;
}
if (expression is LambdaExpression)
{
var expr = expression as LambdaExpression;
node = new ExpressionTreeNode(string.Format("LambdaExpression [{0}] Body:", expr.ReturnType));
node.Nodes.Add(GetExpressionTreeNode(expr.Body));
}
if (expression is ListInitExpression)
{
var expr = expression as ListInitExpression;
}
if (expression is LoopExpression)
{
var expr = expression as LoopExpression;
}
if (expression is MemberExpression)
{
var expr = expression as MemberExpression;
node = new ExpressionTreeNode(string.Format("MemberExpression [{0}]: {1}", expr.Type.Name, expr.Member.Name));
}
if (expression is MemberInitExpression)
{
var expr = expression as MemberInitExpression;
node = new ExpressionTreeNode(string.Format("MemberInitExpression [{0}]:", expr.NewExpression.Type));
expr.Bindings.ToList().ForEach(b => node.Nodes.Add(new ExpressionTreeNode(b.ToString())));
}
if (expression is MethodCallExpression)
{
var expr = expression as MethodCallExpression;
node = new ExpressionTreeNode(string.Format("MethodCallExpression [{0}] Arguments:", expr.Method.Name));
expr.Arguments.ToList().ForEach(a => node.Nodes.Add(GetExpressionTreeNode(a)));
}
if (expression is NewArrayExpression)
{
var expr = expression as NewArrayExpression;
}
if (expression is NewExpression)
{
var expr = expression as NewExpression;
node = new ExpressionTreeNode(string.Format("NewExpression Arguments:"));
for (int i = 0; i < expr.Arguments.Count; i++)
node.Nodes.Add(GetExpressionTreeNode(expr.Arguments[i], expr.Members[i].Name));
}
if (expression is ParameterExpression)
{
var expr = expression as ParameterExpression;
node = new ExpressionTreeNode(string.Format("TypeBinaryExpression [{0}]: {1}", expr.Type, expr.Name));
}
if (expression is RuntimeVariablesExpression)
{
var expr = expression as RuntimeVariablesExpression;
}
if (expression is SwitchExpression)
{
var expr = expression as SwitchExpression;
}
if (expression is TryExpression)
{
var expr = expression as TryExpression;
}
if (expression is TypeBinaryExpression)
{
var expr = expression as TypeBinaryExpression;
node = new ExpressionTreeNode(string.Format("TypeBinaryExpression [{0}] Oprand:", expr.TypeOperand));
node.Nodes.Add(GetExpressionTreeNode(expr.Expression));
}
if (expression is UnaryExpression)
{
var expr = expression as UnaryExpression;
node = new ExpressionTreeNode(string.Format("UnaryExpression [{0}] Oprand:", expr.NodeType));
node.Nodes.Add(GetExpressionTreeNode(expr.Operand));
}
if (node == null)
node = new ExpressionTreeNode(string.Format("Unkown Node [{0}-{1}]: {2}", expression.GetType().Name, expression.NodeType, expression));
if (prefix != null)
node.Text = string.Format("{0} => {1}", prefix, node.Text);
node.ExpressionString = expression.ToString();
return node;
}
