private void EmitConstant(object value, Type type)
{
// Try to emit the constant directly into IL
if (ILGen.CanEmitConstant(value, type))
{
_ilg.EmitConstant(value, type);
return;
}
_boundConstants.EmitConstant(this, value, type);
}
protected internal override Expression VisitConstant(ConstantExpression node)
{
// If we're in Quote, we can ignore constants completely
if (_inQuote)
{
return(node);
}
// Constants that can be emitted into IL don't need to be stored on
// the delegate
if (ILGen.CanEmitConstant(node.Value, node.Type))
{
return(node);
}
_constants.Peek().AddReference(node.Value, node.Type);
return(node);
}
internal void EmitConstant(LambdaCompiler lc, object value, Type type)
{
Debug.Assert(!ILGen.CanEmitConstant(value, type));
if (!lc.CanEmitBoundConstants)
{
throw Error.CannotCompileConstant(value);
}
LocalBuilder local;
if (_cache.TryGetValue(new TypedConstant(value, type), out local))
{
lc.IL.Emit(OpCodes.Ldloc, local);
return;
}
EmitConstantsArray(lc);
EmitConstantFromArray(lc, value, type);
}