public override void Emit()
{
if (this.ExpressionStatement.IsNull)
{
return;
}
var oldSemiColon = this.Emitter.EnableSemicolon;
List <Expression> awaiters = null;
if (this.Emitter.IsAsync)
{
var awaitSearch = new AwaitSearchVisitor();
this.ExpressionStatement.Expression.AcceptVisitor(awaitSearch);
awaiters = awaitSearch.GetAwaitExpressions();
}
bool isAwaiter = this.ExpressionStatement.Expression is UnaryOperatorExpression && ((UnaryOperatorExpression)this.ExpressionStatement.Expression).Operator == UnaryOperatorType.Await;
this.ExpressionStatement.Expression.AcceptVisitor(this.Emitter);
if (this.Emitter.EnableSemicolon && !isAwaiter)
{
this.WriteSemiColon(true);
}
if (oldSemiColon)
{
this.Emitter.EnableSemicolon = true;
}
}
public override AstNode VisitUsingStatement(UsingStatement usingStatement)
{
var awaitSearch = new AwaitSearchVisitor(null);
usingStatement.AcceptVisitor(awaitSearch);
var awaiters = awaitSearch.GetAwaitExpressions().ToArray();
if (awaiters.Length > 0)
{
IEnumerable <AstNode> inner = null;
var res = usingStatement.ResourceAcquisition;
var varStat = res as VariableDeclarationStatement;
if (varStat != null)
{
inner = varStat.Variables.Skip(1);
res = varStat.Variables.First();
}
return(this.EmitUsing(usingStatement, res, inner, varStat));
}
return(base.VisitUsingStatement(usingStatement));
}
protected override void DoEmit()
{
if (this.ExpressionStatement.IsNull)
{
return;
}
var oldSemiColon = this.Emitter.EnableSemicolon;
List<Expression> awaiters = null;
if (this.Emitter.IsAsync)
{
var awaitSearch = new AwaitSearchVisitor();
this.ExpressionStatement.Expression.AcceptVisitor(awaitSearch);
awaiters = awaitSearch.GetAwaitExpressions();
}
bool isAwaiter = this.ExpressionStatement.Expression is UnaryOperatorExpression && ((UnaryOperatorExpression)this.ExpressionStatement.Expression).Operator == UnaryOperatorType.Await;
this.ExpressionStatement.Expression.AcceptVisitor(this.Emitter);
if (this.Emitter.EnableSemicolon && !isAwaiter)
{
this.WriteSemiColon(true);
}
if (oldSemiColon)
{
this.Emitter.EnableSemicolon = true;
}
}
protected Expression[] GetAwaiters(AstNode node)
{
var awaitSearch = new AwaitSearchVisitor();
node.AcceptVisitor(awaitSearch);
return(awaitSearch.GetAwaitExpressions().ToArray());
}
public override void VisitUsingStatement(UsingStatement usingStatement)
{
var awaitSearch = new AwaitSearchVisitor(null);
usingStatement.AcceptVisitor(awaitSearch);
var awaiters = awaitSearch.GetAwaitExpressions().ToArray();
if (awaiters.Length > 0)
{
this.Found = true;
}
base.VisitUsingStatement(usingStatement);
}
protected Expression[] GetAwaiters(AstNode node)
{
var awaitSearch = new AwaitSearchVisitor();
node.AcceptVisitor(awaitSearch);
return awaitSearch.GetAwaitExpressions().ToArray();
}