1 files changed, 45 insertions, 0 deletions
diff --git a/gnu/llvm/clang/lib/Tooling/Syntax/Synthesis.cpp b/gnu/llvm/clang/lib/Tooling/Syntax/Synthesis.cpp
new file mode 100644
index 00000000000..aa01a34c761
--- /dev/null
+++ b/gnu/llvm/clang/lib/Tooling/Syntax/Synthesis.cpp
@@ -0,0 +1,45 @@
+//===- Synthesis.cpp ------------------------------------------*- C++ -*-=====//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+#include "clang/Tooling/Syntax/BuildTree.h"
+
+using namespace clang;
+
+/// Exposes private syntax tree APIs required to implement node synthesis.
+/// Should not be used for anything else.
+class syntax::FactoryImpl {
+public:
+  static void setCanModify(syntax::Node *N) { N->CanModify = true; }
+
+  static void prependChildLowLevel(syntax::Tree *T, syntax::Node *Child,
+                                   syntax::NodeRole R) {
+    T->prependChildLowLevel(Child, R);
+  }
+};
+
+clang::syntax::Leaf *syntax::createPunctuation(clang::syntax::Arena &A,
+                                               clang::tok::TokenKind K) {
+  auto Tokens = A.lexBuffer(llvm::MemoryBuffer::getMemBuffer(
+                                clang::tok::getPunctuatorSpelling(K)))
+                    .second;
+  assert(Tokens.size() == 1);
+  assert(Tokens.front().kind() == K);
+  auto *L = new (A.allocator()) clang::syntax::Leaf(Tokens.begin());
+  FactoryImpl::setCanModify(L);
+  L->assertInvariants();
+  return L;
+}
+
+clang::syntax::EmptyStatement *
+syntax::createEmptyStatement(clang::syntax::Arena &A) {
+  auto *S = new (A.allocator()) clang::syntax::EmptyStatement;
+  FactoryImpl::setCanModify(S);
+  FactoryImpl::prependChildLowLevel(S, createPunctuation(A, clang::tok::semi),
+                                    NodeRole::Unknown);
+  S->assertInvariants();
+  return S;
+}