Fix #13009: Add valueType-originalTypeName (danmar#6686)

Author: swasti16

lib/tokenize.cpp

@@ -781,7 +781,8 @@ namespace {
             const bool isFunctionPointer = Token::Match(mNameToken, "%name% )");
             if (isFunctionPointer && isCast(tok->previous())) {
                 tok->insertToken("*");
-                insertTokens(tok, std::pair<Token*, Token*>(mRangeType.first, mNameToken->linkAt(1)));
+                Token* const tok_1 = insertTokens(tok, std::pair<Token*, Token*>(mRangeType.first, mNameToken->linkAt(1)));
+                tok_1->originalName(tok->str());
                 tok->deleteThis();
                 return;
             }
@@ -1041,8 +1042,8 @@ namespace {
 
     private:
         static bool isCast(const Token* tok) {
-            if (Token::Match(tok, "( %name% ) (|%name%"))
-                return !tok->tokAt(2)->isKeyword();
+            if (Token::Match(tok, "( %name% ) (|%name%|%num%"))
+                return !tok->tokAt(3)->isKeyword();
             if (Token::Match(tok, "< %name% > (") && tok->previous() && endsWith(tok->strAt(-1), "_cast", 5))
                 return true;
             return false;

test/testsymboldatabase.cpp

@@ -596,6 +596,7 @@ class TestSymbolDatabase : public TestFixture {
 
         TEST_CASE(incomplete_type); // #9255 (infinite recursion)
         TEST_CASE(exprIds);
+        TEST_CASE(testValuetypeOriginalName);
     }
 
     void array() {
@@ -10821,6 +10822,34 @@ class TestSymbolDatabase : public TestFixture {
             ASSERT_EQUALS(true, testExprIdNotEqual(code, "(", 3U, "(", 4U));
         }
     }
+
+    void testValuetypeOriginalName() {
+        {
+            GET_SYMBOL_DB("typedef void ( *fp16 )( int16_t n );\n"
+                          "typedef void ( *fp32 )( int32_t n );\n"
+                          "void R_11_1 ( void ) {\n"
+                          "   fp16 fp1 = NULL;\n"
+                          "   fp32 fp2 = ( fp32) fp1;\n"
+                          "}\n");
+            const Token* tok = Token::findsimplematch(tokenizer.tokens(), "( void * ) fp1");
+            ASSERT_EQUALS(tok->isCast(), true);
+            ASSERT(tok->valueType());
+            ASSERT(tok->valueType()->originalTypeName == "fp32");
+            ASSERT(tok->valueType()->pointer == 1);
+            ASSERT(tok->valueType()->constness == 0);
+        }
+
+        {
+            GET_SYMBOL_DB("typedef void ( *fp16 )( int16_t n );\n"
+                          "fp16 fp3 = ( fp16 ) 0x8000;");
+            const Token* tok = Token::findsimplematch(tokenizer.tokens(), "( void * ) 0x8000");
+            ASSERT_EQUALS(tok->isCast(), true);
+            ASSERT(tok->valueType());
+            ASSERT(tok->valueType()->originalTypeName == "fp16");
+            ASSERT(tok->valueType()->pointer == 1);
+            ASSERT(tok->valueType()->constness == 0);
+        }
+    }
 };
 
 REGISTER_TEST(TestSymbolDatabase)