protected internal override Expression VisitAwait(AwaitCSharpExpression node)
{
var exprCount = 1 /* GetAwaiter */ + 1 /* IsCompleted */ + 1 /* Label */ + 1 /* GetResult */ + 2 /* Cleanup */;
if (_awaitInBlock.Count > 0)
{
_awaitInBlock.Peek().Value = true;
}
var getAwaiter = node.Info.ReduceGetAwaiter(node.Operand);
var awaiterVar = _variableFactory(getAwaiter.Type, "__awaiter");
var isCompleted = node.Info.ReduceIsCompleted(awaiterVar);
var getResult = node.Info.ReduceGetResult(awaiterVar);
if (getResult.Type != typeof(void))
{
exprCount++;
}
var vars = Array.Empty <ParameterExpression>();
var exprs = new Expression[exprCount];
if (getResult.Type != typeof(void))
{
var resultVar = Expression.Parameter(getResult.Type, "__result");
getResult = Expression.Assign(resultVar, getResult);
vars = new[] { resultVar };
exprs[^ 1] = resultVar;
protected internal override Expression VisitAwait(AwaitCSharpExpression node)
{
if (_forbidden.Count > 0)
{
throw Error.AwaitForbiddenHere(_forbidden.Peek());
}
return(base.VisitAwait(node));
}
protected internal override Expression VisitAwait(AwaitCSharpExpression node)
{
var exprCount = 1 /* GetAwaiter */ + 1 /* IsCompleted */ + 1 /* Label */ + 1 /* GetResult */ + 2 /* Cleanup */;
if (_awaitInBlock.Count > 0)
{
_awaitInBlock.Peek().Value = true;
}
var getAwaiter = node.ReduceGetAwaiter();
var awaiterVar = _variableFactory(getAwaiter.Type, "__awaiter");
var isCompleted = node.ReduceIsCompleted(awaiterVar);
var getResult = node.ReduceGetResult(awaiterVar);
if (getResult.Type != typeof(void))
{
exprCount++;
}
var vars = Array.Empty <ParameterExpression>();
var exprs = new Expression[exprCount];
if (getResult.Type != typeof(void))
{
var resultVar = Expression.Parameter(getResult.Type, "__result");
getResult = Expression.Assign(resultVar, getResult);
vars = new[] { resultVar };
exprs[exprs.Length - 1] = resultVar;
}
var continueLabel = GetLabel();
var i = 0;
exprs[i++] =
Expression.Assign(awaiterVar, getAwaiter);
exprs[i++] =
Expression.IfThen(Expression.Not(isCompleted),
Expression.Block(
UpdateState(continueLabel.Index),
_onCompletedFactory(awaiterVar),
Expression.Return(_exit)
)
);
exprs[i++] =
Expression.Label(continueLabel.Label);
exprs[i++] =
getResult;
exprs[i++] =
Expression.Assign(awaiterVar, Expression.Default(awaiterVar.Type));
exprs[i++] =
UpdateState(-1);
var res = Expression.Block(getResult.Type, vars, exprs);
return(res);
}
protected internal override Expression VisitAwait(AwaitCSharpExpression node)
{
if (_hasAwait.Count > 0)
{
_hasAwait.Peek().Value = true;
}
return base.VisitAwait(node);
}
protected internal override Expression VisitAwait(AwaitCSharpExpression node)
{
if (_hasAwait.Count > 0)
{
_hasAwait.Peek().Value = true;
}
return(base.VisitAwait(node));
}
protected internal override Expression VisitAwait(AwaitCSharpExpression node)
{
Visited = true;
return(base.VisitAwait(node));
}
protected internal override Expression VisitAwait(AwaitCSharpExpression node)
{
var exprCount = 1 /* GetAwaiter */ + 1 /* IsCompleted */ + 1 /* Label */ + 1 /* GetResult */ + 2 /* Cleanup */;
if (_awaitInBlock.Count > 0)
{
_awaitInBlock.Peek().Value = true;
}
var getAwaiter = node.ReduceGetAwaiter();
var awaiterVar = _variableFactory(getAwaiter.Type, "__awaiter");
var isCompleted = node.ReduceIsCompleted(awaiterVar);
var getResult = node.ReduceGetResult(awaiterVar);
if (getResult.Type != typeof(void))
{
exprCount++;
}
var vars = Array.Empty<ParameterExpression>();
var exprs = new Expression[exprCount];
if (getResult.Type != typeof(void))
{
var resultVar = Expression.Parameter(getResult.Type, "__result");
getResult = Expression.Assign(resultVar, getResult);
vars = new[] { resultVar };
exprs[exprs.Length - 1] = resultVar;
}
var continueLabel = GetLabel();
var i = 0;
exprs[i++] =
Expression.Assign(awaiterVar, getAwaiter);
exprs[i++] =
Expression.IfThen(Expression.Not(isCompleted),
Expression.Block(
UpdateState(continueLabel.Index),
_onCompletedFactory(awaiterVar),
Expression.Return(_exit)
)
);
exprs[i++] =
Expression.Label(continueLabel.Label);
exprs[i++] =
getResult;
exprs[i++] =
Expression.Assign(awaiterVar, Expression.Default(awaiterVar.Type));
exprs[i++] =
UpdateState(-1);
var res = Expression.Block(getResult.Type, vars, exprs);
return res;
}
