/// <summary>
/// Creates a new FunctionBinderMethod instance.
/// </summary>
/// <param name="method"> The method to call. </param>
/// <param name="flags"> Flags that modify the binding process. </param>
private void Init(JSFunctionFlags flags)
{
this.Flags = flags;
this.HasEngineParameter = (flags & JSFunctionFlags.HasEngineParameter) != 0;
if (this.HasEngineParameter == true && this.Method.IsStatic == false)
throw new InvalidOperationException(string.Format("The {0} flag cannot be used on the instance method '{1}'.", JSFunctionFlags.HasEngineParameter, this.Name));
this.HasExplicitThisParameter = (flags & JSFunctionFlags.HasThisObject) != 0;
if (this.HasExplicitThisParameter == true && this.Method.IsStatic == false)
throw new InvalidOperationException(string.Format("The {0} flag cannot be used on the instance method '{1}'.", JSFunctionFlags.HasThisObject, this.Name));
var parameters = this.Method.GetParameters();
// If HasEngineParameter is specified, the first parameter must be of type ScriptEngine.
if (this.HasEngineParameter == true)
{
if (parameters.Length == 0)
throw new InvalidOperationException(string.Format("The method '{0}' does not have enough parameters.", this.Name));
if (parameters[0].ParameterType != typeof(ScriptEngine))
throw new InvalidOperationException(string.Format("The first parameter of the method '{0}' must be of type ScriptEngine.", this.Name));
}
// If there is a "this" parameter, it must be of type ObjectInstance (or derived from it).
if (this.HasExplicitThisParameter == true)
{
if (parameters.Length <= (this.HasEngineParameter ? 1 : 0))
throw new InvalidOperationException(string.Format("The method '{0}' does not have enough parameters.", this.Name));
this.ExplicitThisType = parameters[this.HasEngineParameter ? 1 : 0].ParameterType;
}
/*else if (method.IsStatic == false)
{
this.ThisType = method.DeclaringType;
}*/
// Calculate the min and max parameter count.
// Check the parameter types (the this parameter has already been checked).
// Only certain types are supported.
int start = (this.HasExplicitThisParameter ? 1 : 0) + (this.HasEngineParameter ? 1 : 0);
for (int i = start; i < parameters.Length; i++)
{
Type type = parameters[i].ParameterType;
// ParamArray types must be an array of a supported type.
if (this.HasParamArray == true && i == parameters.Length - 1)
{
if (type.IsArray == false)
throw new NotImplementedException(string.Format("Unsupported varargs parameter type '{0}'.", type));
type = type.GetElementType();
}
if (type != typeof(bool) &&
type != typeof(int) &&
type != typeof(double) &&
type != typeof(string) &&
type != typeof(object) &&
typeof(ObjectInstance).IsAssignableFrom(type) == false)
throw new NotImplementedException(string.Format("Unsupported parameter type '{0}'.", type));
}
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new FunctionBinderMethod instance.
/// </summary>
/// <param name="method"> The method to call. </param>
/// <param name="flags"> Flags that modify the binding process. </param>
public JSBinderMethod(MethodInfo method, JSFunctionFlags flags = JSFunctionFlags.None)
: base(method)
{
Init(flags);
}
/// <summary>
/// Creates a new FunctionBinderMethod instance.
/// </summary>
/// <param name="flags"> Flags that modify the binding process. </param>
private void Init(JSFunctionFlags flags)
{
this.Flags = flags;
this.HasEngineParameter = (flags & JSFunctionFlags.HasEngineParameter) != 0;
if (this.HasEngineParameter == true && this.Method.IsStatic == false)
{
throw new InvalidOperationException(string.Format("The {0} flag cannot be used on the instance method '{1}'.", JSFunctionFlags.HasEngineParameter, this.Name));
}
this.HasExplicitThisParameter = (flags & JSFunctionFlags.HasThisObject) != 0;
if (this.HasExplicitThisParameter == true && this.Method.IsStatic == false)
{
throw new InvalidOperationException(string.Format("The {0} flag cannot be used on the instance method '{1}'.", JSFunctionFlags.HasThisObject, this.Name));
}
var parameters = this.Method.GetParameters();
// If HasEngineParameter is specified, the first parameter must be of type ScriptEngine.
if (this.HasEngineParameter == true)
{
if (parameters.Length == 0)
{
throw new InvalidOperationException(string.Format("The method '{0}' does not have enough parameters.", this.Name));
}
if (parameters[0].ParameterType != typeof(ScriptEngine))
{
throw new InvalidOperationException(string.Format("The first parameter of the method '{0}' must be of type ScriptEngine.", this.Name));
}
}
// If there is a "this" parameter, it must be of type ObjectInstance (or derived from it).
if (this.HasExplicitThisParameter == true)
{
if (parameters.Length <= (this.HasEngineParameter ? 1 : 0))
{
throw new InvalidOperationException(string.Format("The method '{0}' does not have enough parameters.", this.Name));
}
this.ExplicitThisType = parameters[this.HasEngineParameter ? 1 : 0].ParameterType;
}
/*else if (method.IsStatic == false)
* {
* this.ThisType = method.DeclaringType;
* }*/
// Calculate the min and max parameter count.
// Check the parameter types (the this parameter has already been checked).
// Only certain types are supported.
int start = (this.HasExplicitThisParameter ? 1 : 0) + (this.HasEngineParameter ? 1 : 0);
for (int i = start; i < parameters.Length; i++)
{
Type type = parameters[i].ParameterType;
// ParamArray types must be an array of a supported type.
if (this.HasParamArray == true && i == parameters.Length - 1)
{
if (type.IsArray == false)
{
throw new NotImplementedException(string.Format("Unsupported varargs parameter type '{0}'.", type));
}
type = type.GetElementType();
}
if (type != typeof(bool) &&
type != typeof(int) &&
type != typeof(double) &&
type != typeof(string) &&
type != typeof(object) &&
typeof(ObjectInstance).IsAssignableFrom(type) == false)
{
throw new NotImplementedException(string.Format("Unsupported parameter type '{0}'.", type));
}
}
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new FunctionBinderMethod instance.
/// </summary>
/// <param name="method"> The method to call. </param>
/// <param name="flags"> Flags that modify the binding process. </param>
public JSBinderMethod(MethodInfo method, JSFunctionFlags flags = JSFunctionFlags.None)
: base(method)
{
Init(flags);
}
/// <summary>
/// Creates a new BaseJSFunctionAttribute instance.
/// </summary>
/// <param name="flags"> One or more flags. </param>
protected BaseJSFunctionAttribute(JSFunctionFlags flags)
{
this.Flags = flags;
}
/// <summary>
/// Creates a new BaseJSFunctionAttribute instance.
/// </summary>
/// <param name="flags"> One or more flags. </param>
protected BaseJSFunctionAttribute(JSFunctionFlags flags)
{
this.Flags = flags;
}
