[torque] Add helpers for C++ code generation

Change-Id: I75a4a2af4bbe9d495d583b13fb6d885d8509c2b8
Bug: v8:7793
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1611797
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61491}

src/torque/implementation-visitor.h

@@ -275,9 +275,9 @@ bool IsCompatibleSignature(const Signature& sig, const TypeVector& types,
 
 class ImplementationVisitor {
  public:
-  void GenerateBuiltinDefinitions(std::string& file_name);
+  void GenerateBuiltinDefinitions(const std::string& output_directory);
   void GenerateClassFieldOffsets(const std::string& output_directory);
-  void GeneratePrintDefinitions(std::string& file_name);
+  void GeneratePrintDefinitions(const std::string& output_directory);
   void GenerateClassVerifiers(const std::string& output_directory);
 
   VisitResult Visit(Expression* expr);

src/torque/torque-compiler.cc

@@ -76,16 +76,9 @@ void CompileCurrentAst(TorqueCompilerOptions options) {
 
   std::string output_directory = options.output_directory;
   if (output_directory.length() != 0) {
-    std::string output_header_path = output_directory;
-    output_header_path += "/builtin-definitions-tq.h";
-    implementation_visitor.GenerateBuiltinDefinitions(output_header_path);
-
+    implementation_visitor.GenerateBuiltinDefinitions(output_directory);
     implementation_visitor.GenerateClassFieldOffsets(output_directory);
-
-    std::string output_source_path =
-        output_directory + "/objects-printer-tq.cc";
-    implementation_visitor.GeneratePrintDefinitions(output_source_path);
-
+    implementation_visitor.GeneratePrintDefinitions(output_directory);
     implementation_visitor.GenerateClassVerifiers(output_directory);
 
     for (Namespace* n : GlobalContext::Get().GetNamespaces()) {

src/torque/utils.cc

@@ -217,6 +217,11 @@ std::string CapifyStringWithUnderscores(const std::string& camellified_string) {
     if (previousWasLower && isupper(current)) {
       result += "_";
     }
+    if (current == '.' || current == '-') {
+      result += "_";
+      previousWasLower = false;
+      continue;
+    }
     result += toupper(current);
     previousWasLower = (islower(current));
   }