|
public static GetVariable ( |
||
| ptr | ||
| tid | int | |
| cached | object | |
| return | object | |
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
try
{
var prop = GetProperty(binder.Name);
if (prop != null && prop.Getter != null)
{
using (var ctx = ScriptEngine.CreateContext())
{
ctx.ContextInfo = objectType.Name + "::" + prop.Getter.Name;
ctx.Prepare(prop.Getter);
ctx.SetObject(thisptr);
ctx.Execute();
result = ctx.GetResult(prop.Getter.ReturnTypeId);
return(true);
}
}
var field = GetField(binder.Name);
if (field != null)
{
result = ScriptEngine.GetVariable(thisptr + field.Offset, field.TypeId, field.Instance);
return(true);
}
ScriptEngine.Log("Unable to get member '{0}' from object of type '{1}'.", binder.Name, objectType.Name);
result = null;
return(false);
}
catch (Exception ex)
{
ScriptEngine.Log("Exception caught while getting object member: {0}.", ex.Message);
result = null;
return(false);
}
}
public override bool TrySetMember(SetMemberBinder binder, object value)
{
try
{
Variable variable;
if (!variables.TryGetValue(binder.Name, out variable))
{
int idx = GetGlobalVarIndexByName(binder.Name);
var ptr = GetAddressOfGlobalVar(idx);
if (ptr == IntPtr.Zero)
{
ScriptEngine.Log("Global variable does not exist.");
return(false);
}
int tid;
GetGlobalVar(idx, out tid);
var instance = ScriptEngine.GetVariable(ptr, tid);
variables[binder.Name] = variable = new Variable(instance, ptr, tid);
}
ScriptEngine.SetVariable(variable.Address, variable.TypeId, value);
return(true);
}
catch (Exception ex)
{
ScriptEngine.Log("Exception caught while fetching '{0}' variable of module '{1}': {2}.", Name, binder.Name, ex.Message);
return(false);
}
}
Field GetField(string name)
{
Field field = null;
if (!Fields.TryGetValue(name, out field))
{
int tid;
int offset;
if (objectType.GetFieldDesc(name, out offset, out tid))
{
var instance = ScriptEngine.GetVariable(thisptr + offset, tid);
field = new Field(offset, tid, instance);
}
Fields[name] = field;
}
return(field);
}
