[TTabCom] Auto-complete through operator->

core/rint/src/TTabCom.cxx

@@ -2409,8 +2409,9 @@ TClass *TTabCom::MakeClassFromVarName(const char varName[],
 
    // not found...
    if (!varName_exists) {
-      std::cerr << std::endl << "variable " << dblquote(varName) << " not defined."
-         << std::endl;
+      if (cut == 0) {
+         std::cerr << std::endl << "variable " << dblquote(varName) << " not defined." << std::endl;
+      }
       return nullptr;                 //* RETURN *//
    }
 
@@ -2500,6 +2501,20 @@ TClass *TTabCom::MakeClassFromVarName(const char varName[],
             return nullptr;           // RETURN
          }
       } else {
+         // Find the TClass and see if the object has an operator->, for example if it is a smart pointer.
+         auto cl = TClass::GetClass(className);
+         if (cl != nullptr) {
+            auto op = cl->GetMethod("operator->", "");
+            if (op != nullptr) {
+               // Get the return type and remove the '*', which should be there
+               className = op->GetReturnTypeNormalizedName();
+               if (className[className.Length() - 1] == '*') {
+                  className.Chop();
+               }
+               return TClass::GetClass(className);
+            }
+         }
+
          // user is using operator->() instead of operator.()
          // ==>
          //      1. we are in wrong context.

roottest/root/rint/TabCom.eref

@@ -1,27 +1,37 @@
-ROOT_prompt_1:1:10: error: no member named 'k' in 'TObject'
+ROOT_prompt_0:1:10: error: no member named 'k' in 'TObject'
 TObject::k
 ~~~~~~~~~^
-ROOT_prompt_2:1:8: error: no member named 'GetListOfT' in 'TROOT'
+ROOT_prompt_1:1:8: error: no member named 'GetListOfT' in 'TROOT'
 gROOT->GetListOfT
 ~~~~~  ^
-ROOT_prompt_8:1:10: error: no member named 'fgPrivateM' in 'MyClass'
+ROOT_prompt_7:1:10: error: no member named 'fgPrivateM' in 'MyClass'
 MyClass::fgPrivateM
 ~~~~~~~~~^
-ROOT_prompt_10:1:16: error: no member named 'SetTi' in 'TAxis'
+ROOT_prompt_9:1:16: error: no member named 'SetTi' in 'TAxis'
 h->GetXaxis()->SetTi
 ~~~~~~~~~~~~~  ^
-ROOT_prompt_12:2:1: error: expected unqualified-id
+variable "x" not defined.
+ROOT_prompt_10:2:1: error: expected unqualified-id
+;
+^
+variable "x" not defined.
+ROOT_prompt_11:2:1: error: expected unqualified-id
 ;
 ^
 ROOT_prompt_14:2:1: error: expected unqualified-id
 ;
 ^
-ROOT_prompt_16:2:1: error: expected unqualified-id
+"s" is not of pointer type. Use this operator: .
+ROOT_prompt_15:2:1: error: expected unqualified-id
 ;
 ^
-ROOT_prompt_18:2:1: error: expected unqualified-id
+ROOT_prompt_17:2:1: error: expected unqualified-id
 ;
 ^
+ROOT_prompt_19:2:1: error: expected unqualified-id
+;
+^
+"ps" is of pointer type. Use this operator: ->
 ROOT_prompt_20:2:1: error: expected unqualified-id
 ;
 ^
@@ -34,3 +44,12 @@ ROOT_prompt_24:2:1: error: expected unqualified-id
 ROOT_prompt_26:2:1: error: expected unqualified-id
 ;
 ^
+ROOT_prompt_28:2:1: error: expected unqualified-id
+;
+^
+ROOT_prompt_30:2:1: error: expected unqualified-id
+;
+^
+ROOT_prompt_32:2:1: error: expected unqualified-id
+;
+^

roottest/root/rint/TabCom.oref

@@ -8,13 +8,19 @@ MyCla	::fgM
 MyCla	::fgPrivateM	
 TH1F *h = 0;
 h->GetXaxis()->SetTi		
+x.	
+x->	
 struct Simple {};
 Simple s;
 s.	
+s->	
 const Simple cs{};
 cs.	
 Simple* ps = nullptr;
 ps->	
+ps.	
+std::unique_ptr<Simple> us;
+us->	
 const Simple* pcs = nullptr;
 pcs->	
 Simple* const cps = nullptr;
@@ -107,3 +113,7 @@ operator=
 Simple
 operator=
 ~Simple
+
+Simple
+operator=
+~Simple

roottest/root/rint/TabCom_input.txt

@@ -8,13 +8,19 @@ MyCla	::fgM
 MyCla	::fgPrivateM	
 TH1F *h = 0;
 h->GetXaxis()->SetTi		
+x.	
+x->	
 struct Simple {};
 Simple s;
 s.	
+s->	
 const Simple cs{};
 cs.	
 Simple* ps = nullptr;
 ps->	
+ps.	
+std::unique_ptr<Simple> us;
+us->	
 const Simple* pcs = nullptr;
 pcs->	
 Simple* const cps = nullptr;