public object VisitReturnStatement(Statement.Return statement)
{
if (statement.value != null)
{
Resolve(statement.value);
}
return(null);
}
public object VisitReturnStatement(Statement.Return statement)
{
object value = null;
if (statement.value != null)
{
value = Evaluate(statement.value);
}
throw new ReturnException(value);
}
protected override Value?Visit(Statement.Return ret)
{
if (ret.Value == null)
{
// No return value
Builder.Ret();
}
else
{
// We also need to compile the return value
var value = VisitNonNull(ret.Value);
Builder.Ret(value);
}
return(null);
}
public override Statement VisitSTMR_Break([NotNull] S_ScriptParser.STMR_BreakContext context)
{
Statement x = null;
if (context.K_BREAK() != null)
{
x = new Statement.Break(this._Host, this._Master);
}
else if (context.K_RETURN() != null)
{
x = new Statement.Return(this._Host, this._Master);
}
else if (context.K_EXIT() != null)
{
x = new Statement.Exit(this._Host, this._Master);
}
else
{
throw new Exception();
}
return(x);
}
protected override object?Visit(Statement.Return ret)
{
Debug.Assert(currentProcReturnType != null);
base.Visit(ret);
Type retType = ret.Value == null ? Type.Unit : System.TypeOf(ret.Value);
if (!currentProcReturnType.Equals(retType))
{
// Error, work out what we know
Debug.Assert(currentProcSignature != null);
var signature = (Syntax.ParseTree.Expression.ProcSignature?)currentProcSignature.ParseTreeNode;
var definition = (Syntax.ParseTree.IParseTreeElement?)signature?.Return ?? signature?.CloseParen;
var wrong = ((Node?)FindDeepestReturnValue(ret.Value) ?? ret)?.ParseTreeNode;
System.Report(new TypeMismatchError(currentProcReturnType, retType)
{
Defined = definition,
Wrong = wrong,
Context = "return value",
ImplicitlyDefined = signature != null && signature.Return == null,
});
}
return(null);
}
public object VisitReturnStatement(Statement.Return stmt)
{
stmt.Expr.Accept(this);
addInstruction(0x0F); // return
return(null);
}
public object VisitReturnStatement(Statement.Return stmt)
{
returningBranch = true;
return(stmt.Expr.Accept(this));
}
public Token visitReturnStatement(Statement.Return returnStmt)
{
return(returnStmt.keyword);
}