[llvm-rc] Serialize DIALOG(EX) to .res files (serialization, pt 4).

This is now able to serialize DIALOG and DIALOGEX resources to .res
files. It still can't parse dialog-specific CAPTION, FONT, and STYLE
optional statement - these will be added in the following patch.

A limited set of controls is included. However, more can be easily added
by extending SupportedCtls map defined in ResourceScriptStmt.cpp.

Differential Revision: https://reviews.llvm.org/D37862

llvm-svn: 314578

1 files changed, 6 insertions, 4 deletions

diff --git a/llvm/tools/llvm-rc/ResourceScriptParser.cpp b/llvm/tools/llvm-rc/ResourceScriptParser.cpp
index d4aa4b24379..1e32d4d1a9d 100644
--- a/llvm/tools/llvm-rc/ResourceScriptParser.cpp
+++ b/llvm/tools/llvm-rc/ResourceScriptParser.cpp
@@ -458,15 +458,17 @@ Expected<Control> RCParser::parseControl() {
   //  [class] text, id, x, y, width, height [, style] [, exstyle] [, helpID]
   //  [class]       id, x, y, width, height [, style] [, exstyle] [, helpID]
   // Note that control ids must be integers.
+  // Text might be either a string or an integer pointing to resource ID.
   ASSIGN_OR_RETURN(ClassResult, readIdentifier());
   std::string ClassUpper = ClassResult->upper();
-  if (Control::SupportedCtls.find(ClassUpper) == Control::SupportedCtls.end())
+  auto CtlInfo = Control::SupportedCtls.find(ClassUpper);
+  if (CtlInfo == Control::SupportedCtls.end())
     return getExpectedError("control type, END or '}'", true);
 
   // Read caption if necessary.
-  StringRef Caption;
-  if (Control::CtlsWithTitle.find(ClassUpper) != Control::CtlsWithTitle.end()) {
-    ASSIGN_OR_RETURN(CaptionResult, readString());
+  IntOrString Caption{StringRef()};
+  if (CtlInfo->getValue().HasTitle) {
+    ASSIGN_OR_RETURN(CaptionResult, readIntOrString());
     RETURN_IF_ERROR(consumeType(Kind::Comma));
     Caption = *CaptionResult;
   }