Fix ticket #177 (Tokenizer doesn't add braces around if-scope)

http://apps.sourceforge.net/trac/cppcheck/ticket/177

src/tokenize.cpp

@@ -1459,6 +1459,7 @@ bool Tokenizer::simplifyIfAddBraces()
         // insert open brace..
         tok->insertToken("{");
         tok = tok->next();
+        Token *tempToken = tok;
 
         // insert close brace..
         // In most cases it would work to just search for the next ';' and insert a closing brace after it.
@@ -1467,31 +1468,31 @@ bool Tokenizer::simplifyIfAddBraces()
         // * if (cond1) if (cond2) { }
         int parlevel = 0;
         int indentlevel = 0;
-        while ((tok = tok->next()) != NULL)
+        while ((tempToken = tempToken->next()) != NULL)
         {
-            if (tok->str() == "{")
+            if (tempToken->str() == "{")
                 ++indentlevel;
 
-            else if (tok->str() == "}")
+            else if (tempToken->str() == "}")
             {
                 --indentlevel;
                 if (indentlevel == 0)
                     break;
             }
 
-            else if (tok->str() == "(")
+            else if (tempToken->str() == "(")
                 ++parlevel;
 
-            else if (tok->str() == ")")
+            else if (tempToken->str() == ")")
                 --parlevel;
 
-            else if (indentlevel == 0 && parlevel == 0 && tok->str() == ";")
+            else if (indentlevel == 0 && parlevel == 0 && tempToken->str() == ";")
                 break;
         }
 
-        if (tok)
+        if (tempToken)
         {
-            tok->insertToken("}");
+            tempToken->insertToken("}");
             ret = true;
         }
     }

test/testtokenize.cpp

@@ -75,6 +75,7 @@ private:
         TEST_CASE(ifAddBraces2);
         TEST_CASE(ifAddBraces3);
         TEST_CASE(ifAddBraces4);
+        TEST_CASE(ifAddBraces5);
 
         TEST_CASE(numeric_true_condition);
 
@@ -397,6 +398,32 @@ private:
         ASSERT_EQUALS(std::string(" char * foo ( ) { char * str = malloc ( 10 ) ; if ( somecondition ) { for ( ; ; ) { } } return str ; }"), ostr.str());
     }
 
+    void ifAddBraces5()
+    {
+        const char code[] = "void f()\n"
+                            "{\n"
+                            "for(int i = 0; i < 2; i++)\n"
+                            "if(true)\n"
+                            "return;\n"
+                            "\n"
+                            "return;\n"
+                            "}\n";
+
+
+        // tokenize..
+        OurTokenizer tokenizer;
+        std::istringstream istr(code);
+        tokenizer.tokenize(istr, "test.cpp");
+
+        ASSERT_EQUALS(true, tokenizer.simplifyIfAddBraces());
+
+        std::ostringstream ostr;
+        for (const Token *tok = tokenizer.tokens(); tok; tok = tok->next())
+            ostr << " " << tok->str();
+        ASSERT_EQUALS(std::string(" void f ( ) { for ( int i = 0 ; i < 2 ; i ++ ) { if ( true ) { return ; } } return ; }"), ostr.str());
+    }
+
+
     void simplifyKnownVariables1()
     {
         const char code[] = "void f()\n"