/// <summary>
/// Generates CIL for the expression.
/// </summary>
/// <param name="generator"> The generator to output the CIL to. </param>
/// <param name="optimizationInfo"> Information about any optimizations that should be performed. </param>
public override void GenerateCode(ILGenerator generator, OptimizationInfo optimizationInfo)
{
// Note: we use GetRawOperand() so that grouping operators are not ignored.
var operand = this.GetRawOperand(0);
var functionCallExpressionOperand = operand as FunctionCallExpression;
// There is only one operand, and it can be either a reference or a function call.
// We need to split the operand into a function and some arguments.
// If the operand is a reference, it is equivalent to a function call with no arguments.
if (functionCallExpressionOperand != null)
{
// Emit the function instance first.
var function = functionCallExpressionOperand.Target;
function.GenerateCode(generator, optimizationInfo);
EmitConversion.ToAny(generator, function.ResultType);
}
else
{
// Emit the function instance first.
operand.GenerateCode(generator, optimizationInfo);
EmitConversion.ToAny(generator, operand.ResultType);
}
// Check the object really is a function - if not, throw an exception.
generator.IsInstance(typeof(Library.FunctionInstance));
generator.Duplicate();
var endOfTypeCheck = generator.CreateLabel();
generator.BranchIfNotNull(endOfTypeCheck);
// Throw an nicely formatted exception.
var targetValue = generator.CreateTemporaryVariable(typeof(object));
generator.StoreVariable(targetValue);
EmitHelpers.LoadScriptEngine(generator);
generator.LoadString("TypeError");
generator.LoadString("The new operator requires a function, found a '{0}' instead");
generator.LoadInt32(1);
generator.NewArray(typeof(object));
generator.Duplicate();
generator.LoadInt32(0);
generator.LoadVariable(targetValue);
generator.Call(ReflectionHelpers.TypeUtilities_TypeOf.Value);
generator.StoreArrayElement(typeof(object));
generator.Call(ReflectionHelpers.String_Format.Value);
generator.LoadInt32(optimizationInfo.SourceSpan.StartLine);
generator.LoadStringOrNull(optimizationInfo.Source.Path);
generator.LoadStringOrNull(optimizationInfo.FunctionName);
generator.NewObject(ReflectionHelpers.JavaScriptException_Constructor_Error.Value);
generator.Throw();
generator.DefineLabelPosition(endOfTypeCheck);
generator.ReleaseTemporaryVariable(targetValue);
if (functionCallExpressionOperand != null)
{
// Emit an array containing the function arguments.
((FunctionCallExpression)operand).GenerateArgumentsArray(generator, optimizationInfo);
}
else
{
// Emit an empty array.
generator.LoadInt32(0);
generator.NewArray(typeof(object));
}
// Call FunctionInstance.ConstructLateBound(argumentValues)
generator.Call(ReflectionHelpers.FunctionInstance_ConstructLateBound.Value);
}
