private static Condition BuildConditionInternal(string s)
{
s = s.Trim();
Stack <Condition> condStack = new Stack <Condition>();
Stack <int> opStack = new Stack <int>();
for (int i = 0; i < s.Length;)
{
if (s[i] == '(')
{
string p = BraceHelper.SelectBracesContent(s, ref i, '(', ')');
condStack.Push(BuildConditionInternal(p));
continue;
}
if (char.IsLetterOrDigit(s[i]) || s[i] == '^' || s[i] == '$')
{
string p = "";
while (i < s.Length && !"<>=!&|".Contains(s[i]))
{
p += s[i];
i++;
}
condStack.Push(new FakeCondition(p.Trim()));
continue;
}
string ops = "";
while (i < s.Length && "<>=!&|".Contains(s[i]))
{
ops += s[i];
i++;
}
if (ops.Length > 0)
{
int op = GetOperationPriority(ops);
while (opStack.Count > 0 && opStack.Peek() > op)
{
condStack.Push(MakeCondition(condStack, opStack));
}
opStack.Push(op);
continue;
}
i++;
}
while (opStack.Count > 0)
{
condStack.Push(MakeCondition(condStack, opStack));
}
if (condStack.Count != 1)
{
throw new Exception("Invalid condition statement: [" + s + "]");
}
return(condStack.Pop());
}
private string SelectObjectConditions(string template, ref int i)
{
return(BraceHelper.SelectBracesContent(template, ref i, '[', ']'));
}
private string SelectObjectBody(string template, ref int i)
{
string result = BraceHelper.SelectBracesContent(template, ref i, '{', '}');
return(result);
}
public static object ReadObject(string template, ref int i, object model)
{
if (i >= template.Length)
{
return(null);
}
string name = "";
object current;
if (template[i] == '^')
{
current = model;
i++;
}
else
{
while (i < template.Length && char.IsLetterOrDigit(template[i]))
{
name += template[i];
i++;
}
if (name.Length == 0)
{
throw new Exception("Incorect syntax in [" + template + "] at position " + i);
}
Type t = model.GetType();
bool hasParams = i < template.Length && template[i] == '(';
if (hasParams)
{
string parameters = BraceHelper.SelectBracesContent(template, ref i, '(', ')');
List <string> list = ParametersHelper.GetParametersList(parameters);
object[] ps = new object[list.Count];
int k = 0;
foreach (string l in list)
{
if (l == "^")
{
ps[k] = model;
}
else if (l.StartsWith("^"))
{
int index = 0;
ps[k] = ReadObject(l, ref index, model);
}
else
{
ps[k] = l;
}
k++;
}
Type[] types = new Type[ps.Length];
for (int j = 0; j < ps.Length; j++)
{
types[j] = ps[j].GetType();
}
MethodInfo mi = t.GetMethod(name, types);
if (mi != null)
{
current = mi.Invoke(model, ps);
}
else
{
throw new Exception("Can not find method:[" + name + "] in object type [" + t + "]");
}
}
else
{
FieldInfo fi = t.GetField(name);
if (fi != null)
{
current = fi.GetValue(model);
}
else
{
PropertyInfo pi = t.GetProperty(name,
BindingFlags.Instance | BindingFlags.Public |
BindingFlags.GetProperty);
if (pi != null)
{
current = pi.GetValue(model, null);
}
else
{
throw new Exception("Can not find property or field:[" + name + "] in object type [" + t + "]");
}
}
}
}
if (i >= template.Length || template[i] != '.')
{
return(current);
}
i++;
return(ReadObject(template, ref i, current));
}
