[clang] Retrieve BinaryOperator::getOpcode and BinaryOperator::getOpcodeStr via libclang and its python interface (PR #98489)

[Aaron Ballman via cfe-commits]

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@@ -8955,6 +8960,36 @@ unsigned clang_Cursor_isExternalSymbol(CXCursor C, CXString *language,
   return 0;
 }
 
+enum CX_BinaryOperatorKind clang_Cursor_getBinaryOpcode(CXCursor C) {
+  if (C.kind != CXCursor_BinaryOperator &&
+      C.kind != CXCursor_CompoundAssignOperator) {
+    return CX_BO_Invalid;
+  }
+
+  const Expr *D = getCursorExpr(C);
+  if (const BinaryOperator *BinOp = dyn_cast<BinaryOperator>(D)) {
+    switch (BinOp->getOpcode()) {
+    default:
+      return CX_BO_Invalid;
+#define BINARY_OPERATION(Name, Spelling)                                       \
+  case BO_##Name:                                                              \
+    return CX_BO_##Name;
+#include "clang/AST/OperationKinds.def"
+    }
+  }
+
+  return CX_BO_Invalid;
+}
+
+CXString clang_Cursor_getBinaryOpcodeStr(enum CX_BinaryOperatorKind Op) {
+  if (Op > CX_BO_LAST) {
+    return cxstring::createEmpty();
+  }
+
+  return cxstring::createDup(
+      BinaryOperator::getOpcodeStr(static_cast<BinaryOperatorKind>(Op - 1)));
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AaronBallman wrote:

It'd be good to add a comment here explaining why `- 1`.

https://github.com/llvm/llvm-project/pull/98489