protected void PopRecursiveValues(Value[] values, EmitContext context)
{
if (values.Length == 0)
{
return;
}
Value stack = context.RecursiveStackValue;
Value stackAddr = context.RecursiveStackAddressValue;
BoundAccessExpression stackAddrAccess = BoundAccessExpression.BindAccess(stackAddr);
TypeSymbol intType = context.GetTypeSymbol(SpecialType.System_Int32);
TypeSymbol objectType = context.GetTypeSymbol(SpecialType.System_Object);
TypeSymbol objectArrayType = objectType.MakeArrayType(context);
context.Module.AddCommentTag("Recursive stack pop");
BoundInvocationExpression decrementExpression = new BoundPrefixOperatorExpression(context, SyntaxNode,
stackAddrAccess, new ExternSynthesizedOperatorSymbol(BuiltinOperatorType.Subtraction, intType, context));
foreach (var valueToPop in values.Reverse())
{
context.Emit(decrementExpression);
ExternSynthesizedMethodSymbol arrayGetMethod = new ExternSynthesizedMethodSymbol(context, "Get",
objectArrayType, new [] { intType }, objectType, false);
context.Module.AddPush(stack);
context.Module.AddPush(stackAddr);
context.Module.AddPush(valueToPop);
context.Module.AddExtern(arrayGetMethod);
}
context.Module.AddCommentTag("Recursive stack pop end");
}
protected void PushRecursiveValues(Value[] values, EmitContext context)
{
if (values.Length == 0)
{
return;
}
Value stack = context.RecursiveStackValue;
BoundAccessExpression stackAccess = BoundAccessExpression.BindAccess(stack);
Value stackAddr = context.RecursiveStackAddressValue;
BoundAccessExpression stackAddrAccess = BoundAccessExpression.BindAccess(stackAddr);
context.Module.AddCommentTag("Recursive stack push");
// Now we start copying values over to the stack
BoundInvocationExpression incrementExpression = new BoundPrefixOperatorExpression(context, SyntaxNode,
stackAddrAccess, new ExternSynthesizedOperatorSymbol(BuiltinOperatorType.Addition, context.GetTypeSymbol(SpecialType.System_Int32), context));
foreach (var valueToPush in values)
{
BoundArrayAccessExpression arraySet = new BoundArrayAccessExpression(null, context, stackAccess,
new BoundExpression[] { stackAddrAccess });
context.EmitSet(arraySet, BoundAccessExpression.BindAccess(valueToPush));
context.Emit(incrementExpression);
}
context.Module.AddCommentTag("Recursive stack push end");
}
