// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Creates a new instance of a user-defined function.
/// </summary>
/// <param name="prototype"> The next object in the prototype chain. </param>
/// <param name="name"> The name of the function. </param>
/// <param name="argumentNames"> The names of the arguments. </param>
/// <param name="bodyText"> The source code for the body of the function. </param>
internal UserDefinedFunction(ObjectInstance prototype, string name, IList<string> argumentNames, string bodyText)
: base(prototype)
{
if (name == null)
throw new ArgumentNullException("name");
if (argumentNames == null)
throw new ArgumentNullException("argumentNames");
if (bodyText == null)
throw new ArgumentNullException("bodyText");
// Set up a new function scope.
var scope = DeclarativeScope.CreateFunctionScope(this.Engine.CreateGlobalScope(), name, argumentNames);
// Compile the code.
var context = new FunctionMethodGenerator(this.Engine, scope, name, argumentNames, bodyText, new CompilerOptions());
context.GenerateCode();
// Create a new user defined function.
Init(name, argumentNames, this.Engine.CreateGlobalScope(), bodyText, context.GeneratedMethod, context.StrictMode, true);
}
/// <summary>
/// Compiles the function (if it hasn't already been compiled) and returns a delegate
/// representing the compiled function.
/// </summary>
private FunctionDelegate Compile()
{
if (this.body == null)
{
// Compile the function.
var scope = DeclarativeScope.CreateFunctionScope(this.Engine.CreateGlobalScope(), this.Name, this.ArgumentNames);
var functionGenerator = new FunctionMethodGenerator(this.Engine, scope, this.Name, this.ArgumentNames, this.BodyText, new CompilerOptions());
functionGenerator.GenerateCode();
this.generatedMethod = functionGenerator.GeneratedMethod;
this.body = (FunctionDelegate)this.generatedMethod.GeneratedDelegate;
}
return this.body;
}
