preprocessor: stringify macros

src/preprocessor.cpp

@@ -637,13 +637,22 @@ public:
                     std::string str = tok->str();
                     if (str == "##")
                         continue;
-                    if (tok->isName())
+                    if (str[0] == '#' || tok->isName())
                     {
+                        bool stringify = false;
+                        if (str[0] == '#')
+                        {
+                            str = str.erase(0, 1);
+                            stringify = true;
+                        }
                         for (unsigned int i = 0; i < _params.size(); ++i)
                         {
                             if (str == _params[i])
                             {
-                                str = params2[i];
+                                if (stringify)
+                                    str = "\"" + params2[i] + "\"";
+                                else
+                                    str = params2[i];
                                 break;
                             }
                         }

test/testpreprocessor.cpp

@@ -91,6 +91,8 @@ private:
         // TODO TEST_CASE(fmt);
         TEST_CASE(multi_character_character);
         // TODO TEST_CASE(preprocessor_and_operation);
+
+        TEST_CASE(stringify);
     }
 
 
@@ -682,6 +684,17 @@ private:
     }
 
 
+    void stringify()
+    {
+        const char filedata[] = "#define STRINGIFY(x) #x\n"
+                                "STRINGIFY(abc)";
+
+        // expand macros..
+        std::string actual = Preprocessor::expandMacros(filedata);
+
+        ASSERT_EQUALS("\n\"abc\"", actual);
+    }
+
 };
 
 REGISTER_TEST(TestPreprocessor)