generate token references during symbol database creation [skip ci]

Author: firewave

lib/symboldatabase.cpp

@@ -85,6 +85,7 @@ SymbolDatabase::SymbolDatabase(Tokenizer& tokenizer, const Settings& settings, E
     createSymbolDatabaseEnums();
     createSymbolDatabaseEscapeFunctions();
     createSymbolDatabaseIncompleteVars();
+    createTokenRefs();
     createSymbolDatabaseExprIds();
     debugSymbolDatabase();
 }
@@ -1622,16 +1623,20 @@ namespace {
                 key.parentOp += type;
             }
 
-            for (const auto& ref: followAllReferences(op1)) {
-                if (ref.token->exprId() != 0) { // cppcheck-suppress useStlAlgorithm
-                    key.operand1 = ref.token->exprId();
-                    break;
+            if (op1) {
+                for (const auto& ref: op1->refs()) {
+                    if (ref.token->exprId() != 0) { // cppcheck-suppress useStlAlgorithm
+                        key.operand1 = ref.token->exprId();
+                        break;
+                    }
                 }
             }
-            for (const auto& ref: followAllReferences(op2)) {
-                if (ref.token->exprId() != 0) { // cppcheck-suppress useStlAlgorithm
-                    key.operand2 = ref.token->exprId();
-                    break;
+            if (op2) {
+                for (const auto& ref: op2->refs()) {
+                    if (ref.token->exprId() != 0) { // cppcheck-suppress useStlAlgorithm
+                        key.operand2 = ref.token->exprId();
+                        break;
+                    }
                 }
             }
 
@@ -1660,6 +1665,15 @@ namespace {
     }
 }
 
+void SymbolDatabase::createTokenRefs()
+{
+    for (const Token* tok = mTokenizer.list.front(); tok != mTokenizer.list.back(); tok = tok->next()) {
+        tok->refs(true);
+        tok->refs(false);
+    }
+    // TODO: debug output
+}
+
 void SymbolDatabase::createSymbolDatabaseExprIds()
 {
     // Find highest varId

lib/symboldatabase.h

@@ -1415,6 +1415,7 @@ class CPPCHECKLIB SymbolDatabase {
     void setArrayDimensionsUsingValueFlow();
 
     void clangSetVariables(const std::vector<const Variable *> &variableList);
+    void createTokenRefs();
     void createSymbolDatabaseExprIds();
 
     /* returns the opening { if tok points to enum */