public void RegisterFunction(string functionName, MethodInfo method, DekiScriptNativeInvocationTarget.Parameter[] parameters)
{
var target = new DekiScriptNativeInvocationTarget(null, method, parameters.ToArray());
var function = new DekiScriptInvocationTargetDescriptor(target.Access, false, false, functionName, target.Parameters, target.ReturnType, "", "", target);
var functionPointer = new XUri("native:///").At(function.SystemName);
Functions[functionPointer] = function;
_funcMap[functionName] = functionPointer;
}
private void Add(DekiExtFunctionAttribute ext, MethodInfo method, XDoc script)
{
// convert DekiExtParamAttribute into DekiScriptNativeInvocationTarget.Parameter
var parameters = from param in method.GetParameters()
let attr = (DekiExtParamAttribute[])param.GetCustomAttributes(typeof(DekiExtParamAttribute), false)
select((attr != null) && (attr.Length > 0)) ? new DekiScriptNativeInvocationTarget.Parameter(attr[0].Hint, attr[0].Optional) : null;
// create native target invocation
var target = new DekiScriptNativeInvocationTarget(this, method, parameters.ToArray());
DekiScriptInvocationTargetDescriptor function;
// check if implementation is provided by a script instead
if (script != null)
{
var scriptTarget = new DekiScriptExpressionInvocationTarget(target.Access, target.Parameters, DekiScriptParser.Parse(script));
function = new DekiScriptInvocationTargetDescriptor(target.Access, ext.IsProperty, false, ext.Name ?? method.Name, target.Parameters, target.ReturnType, ext.Description, ext.Transform, scriptTarget);
}
else
{
function = new DekiScriptInvocationTargetDescriptor(target.Access, ext.IsProperty, false, ext.Name ?? method.Name, target.Parameters, target.ReturnType, ext.Description, ext.Transform, target);
}
_functions[Self.At(function.SystemName)] = function;
}
//--- Class Constructor ---
static DekiScriptRuntime()
{
// register built-in functions
_commonFunctions = new Dictionary <XUri, DekiScriptInvocationTargetDescriptor>();
foreach (MethodInfo method in typeof(DekiScriptLibrary).GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.FlattenHierarchy))
{
// check if it has the DekiScriptFunction attribute
DekiScriptFunctionAttribute functionAttribute = (DekiScriptFunctionAttribute)Attribute.GetCustomAttribute(method, typeof(DekiScriptFunctionAttribute));
if (functionAttribute != null)
{
var parameters = from param in method.GetParameters()
let attr = (DekiScriptParamAttribute[])param.GetCustomAttributes(typeof(DekiScriptParamAttribute), false)
select((attr != null) && (attr.Length > 0)) ? new DekiScriptNativeInvocationTarget.Parameter(attr[0].Hint, attr[0].Optional) : null;
var target = new DekiScriptNativeInvocationTarget(null, method, parameters.ToArray());
var function = new DekiScriptInvocationTargetDescriptor(target.Access, functionAttribute.IsProperty, functionAttribute.IsIdempotent, functionAttribute.Name ?? method.Name, target.Parameters, target.ReturnType, functionAttribute.Description, functionAttribute.Transform, target);
_commonFunctions[new XUri("native:///").At(function.SystemName)] = function;
}
}
// build common env
DekiScriptMap common = new DekiScriptMap();
// add global constants
common.AddNativeValueAt("num.e", Math.E);
common.AddNativeValueAt("num.pi", Math.PI);
common.AddNativeValueAt("num.epsilon", double.Epsilon);
common.AddNativeValueAt("num.positiveinfinity", double.PositiveInfinity);
common.AddNativeValueAt("num.negativeinfinity", double.NegativeInfinity);
common.AddNativeValueAt("num.nan", double.NaN);
// add global functions & properties
foreach (var function in _commonFunctions)
{
common.AddNativeValueAt(function.Value.Name, function.Key);
}
_commonEnv = new DekiScriptEnv(common);
}
