[PATCH] D50771: [clang-tblgen] Add -print-records and -dump-json modes.

[Simon Tatham via Phabricator via cfe-commits]

simon_tatham created this revision.
simon_tatham added a reviewer: nhaehnle.
Herald added a subscriber: cfe-commits.

Currently, if clang-tblgen is run without a mode option, it defaults
to the first mode in its 'enum Action', which happens to be
-gen-clang-attr-classes. I think it makes more sense for it to behave
the same way as llvm-tblgen, i.e. print a diagnostic dump if it's not
given any more specific instructions.

I've also added the same -dump-json that llvm-tblgen supports. This
means any tblgen command line (whether llvm- or clang-) can be
mechanically turned into one that processes the same input into JSON.


Repository:
  rC Clang

https://reviews.llvm.org/D50771

Files:
  utils/TableGen/TableGen.cpp


Index: utils/TableGen/TableGen.cpp
===================================================================
--- utils/TableGen/TableGen.cpp
+++ utils/TableGen/TableGen.cpp
@@ -23,6 +23,8 @@
 using namespace clang;
 
 enum ActionType {
+  PrintRecords,
+  DumpJSON,
   GenClangAttrClasses,
   GenClangAttrParserStringSwitches,
   GenClangAttrSubjectMatchRulesParserStringSwitches,
@@ -66,6 +68,10 @@
 cl::opt<ActionType> Action(
     cl::desc("Action to perform:"),
     cl::values(
+        clEnumValN(PrintRecords, "print-records",
+                   "Print all records to stdout (default)"),
+        clEnumValN(DumpJSON, "dump-json",
+                   "Dump all records as machine-readable JSON"),
         clEnumValN(GenClangAttrClasses, "gen-clang-attr-classes",
                    "Generate clang attribute clases"),
         clEnumValN(GenClangAttrParserStringSwitches,
@@ -164,6 +170,12 @@
 
 bool ClangTableGenMain(raw_ostream &OS, RecordKeeper &Records) {
   switch (Action) {
+  case PrintRecords:
+    OS << Records;           // No argument, dump all contents
+    break;
+  case DumpJSON:
+    EmitJSON(Records, OS);
+    break;
   case GenClangAttrClasses:
     EmitClangAttrClass(Records, OS);
     break;


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