/// <summary>
/// Declares a function with the specified a name.
/// </summary>
/// <param name="context">The runtime context.</param>
/// <param name="name">The function name.</param>
/// <param name="value">The function object.</param>
/// <exception cref="InvalidOperationException">The function has not been declared in hoisting. <see cref="HoistingDecalreFunction"/> should be called first.</exception>
protected virtual void DecalreFunction(RuntimeContext context, string name, IFunctionObject value)
{
if (this.Functions.ContainsKey(name))
{
this.Functions[name] = value;
}
else
{
throw new InvalidOperationException(
string.Format(ExceptionResource.Undefined, name));
}
}
private ExecuteResult ExecuteStatement(FunctionDeclarationStatement statement)
{
var name = statement.Name;
var paras = statement.Parameters;
var stats = statement.Statements;
try
{
IFunctionObject value = this.ObjectCreator.CreateFunction(this, paras, stats);
Memory.DecalreFunction(this, name, value);
}
catch (RuntimeException)
{
throw;
}
catch (Exception ex)
{
throw new RuntimeException(statement.LinePragma, ex.Message, ex);
}
return(ExecuteResult.Next);
}
/// <summary>
/// Declares a function with the specified a name.
/// </summary>
/// <param name="context">The runtime context.</param>
/// <param name="name">The function name.</param>
/// <param name="value">The function object.</param>
protected override void DecalreFunction(RuntimeContext context, string name, IFunctionObject value)
{
if (this.Functions.ContainsKey(name))
{
this.Functions[name] = value;
}
else if (this.Variables.ContainsKey(name))
{
Variables.Remove(name);
this.Functions.Add(name, value);
}
else if (this.Classes.ContainsKey(name))
{
Classes.Remove(name);
this.Functions.Add(name, value);
}
else
{
this.Functions.Add(name, value);
}
}
/// <summary>
/// Declares a function with the specified a name.
/// </summary>
/// <param name="context">The runtime context.</param>
/// <param name="name">The function name.</param>
/// <param name="value">The function object.</param>
/// <exception cref="InvalidOperationException">The function has not been declared in hoisting. <see cref="HoistingDecalreFunction"/> should be called first.</exception>
void IVariableMemory.DecalreFunction(RuntimeContext context, string name, IFunctionObject value)
{
DecalreFunction(context, name, value);
}
