Fixed #387 (Templates: template functions that return a pointer are not simplified correctly)

* Fixed so that the tokenizer handle variable declarations better when the variable is assigned the return value of a template function
 * Fixed so that the simplifyTemplates detect that a template function is used when its return value is taken

src/tokenize.cpp

@@ -551,7 +551,7 @@ void Tokenizer::simplifyTemplates()
             if (!tok)
                 break;
         }
-        else if (Token::Match(tok->previous(), "[{};] %var% <"))
+        else if (Token::Match(tok->previous(), "[{};=] %var% <"))
         {
             used.push_back(tok);
         }
@@ -2199,14 +2199,14 @@ bool Tokenizer::simplifyVarDecl()
                 int parlevel = 0;
                 while (tok2)
                 {
-                    if (strchr("{(", tok2->str()[0]))
+                    if (strchr("{(<", tok2->str()[0]))
                     {
                         ++parlevel;
                     }
 
-                    else if (strchr("})", tok2->str()[0]))
+                    else if (strchr("})>", tok2->str()[0]))
                     {
-                        if (parlevel < 0)
+                        if (parlevel <= 0)
                             break;
                         --parlevel;
                     }

test/testsimplifytokens.cpp

@@ -94,6 +94,7 @@ private:
         TEST_CASE(template8);
         TEST_CASE(template9);
         TEST_CASE(template10);
+        TEST_CASE(template11);
 
         TEST_CASE(namespaces);
 
@@ -848,6 +849,27 @@ private:
         ASSERT_EQUALS(expected, sizeof_(code));
     }
 
+    void template11()
+    {
+        const char code[] = "template <int ui, typename T> T * foo()\n"
+                            "{ return new T[ui]; }\n"
+                            "\n"
+                            "void f ( )\n"
+                            "{\n"
+                            "    char * p = foo<3,char>();\n"
+                            "}\n";
+
+        // The expected result..
+        const std::string expected(" template < int ui , typename T > T * foo ( )"
+                                   " { return new T [ ui ] ; }"
+                                   " void f ( )"
+                                   " {"
+                                   " char * p ; p = foo<3,char> ( ) ;"
+                                   " }"
+                                   " char * foo<3,char> ( ) { return new char [ 3 ] ; }");
+        ASSERT_EQUALS(expected, sizeof_(code));
+    }
+
 
 
 

test/testtokenize.cpp

@@ -143,6 +143,7 @@ private:
 
         TEST_CASE(vardecl1);
         TEST_CASE(vardecl2);
+        TEST_CASE(vardecl3);
         TEST_CASE(volatile_variables);
         TEST_CASE(syntax_error);
 
@@ -2035,6 +2036,13 @@ private:
         ASSERT_EQUALS("void foo ( a , b ) unsigned int a ; unsigned int b ; { }", actual);
     }
 
+    void vardecl3()
+    {
+        const char code[] = "void f() { char * p = foo<10,char>(); }";
+        const std::string actual(tokenizeAndStringify(code));
+        ASSERT_EQUALS("void f ( ) { char * p ; p = foo < 10 , char > ( ) ; }", actual);
+    }
+
     void volatile_variables()
     {
         const char code[] = "volatile int a=0;\n"