[clang-tblgen] Add -print-records and -dump-json modes.
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.
Reviewers: nhaehnle
Reviewed By: nhaehnle
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D50771
llvm-svn: 340390
diff --git a/clang/utils/TableGen/TableGen.cpp b/clang/utils/TableGen/TableGen.cpp
index a2ba131..c02fa3d 100644
--- a/clang/utils/TableGen/TableGen.cpp
+++ b/clang/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;