[PATCH] D126996: [pseudo] Handle the language predefined identifier __func__

[Haojian Wu via Phabricator via cfe-commits]

hokein created this revision.
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Herald added a project: clang-tools-extra.

The clang lexer lexes it as a dedicated token kind (rather than
identifier), we extend the grammar to handle it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D126996

Files:
  clang-tools-extra/pseudo/lib/cxx.bnf
  clang-tools-extra/pseudo/test/cxx/predefined-identifier.cpp


Index: clang-tools-extra/pseudo/test/cxx/predefined-identifier.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/pseudo/test/cxx/predefined-identifier.cpp
@@ -0,0 +1,5 @@
+// RUN: clang-pseudo -grammar=%cxx-bnf-file -source=%s --print-forest | FileCheck %s
+void s() {
+  __func__;
+  // CHECK: expression~__FUNC__ := tok[5]
+}
Index: clang-tools-extra/pseudo/lib/cxx.bnf
===================================================================
--- clang-tools-extra/pseudo/lib/cxx.bnf
+++ clang-tools-extra/pseudo/lib/cxx.bnf
@@ -750,3 +750,8 @@
 #! split it into two tokens to make the GLR parser aware of the nested-template
 #! case.
 greatergreater := > >
+
+#! C++ predefined identifier, __func__ [dcl.fct.def.general] p8
+#! FIXME: add other (MSVC, GNU extension) predefined identifiers.
+primary-expression := predefined-expression
+predefined-expression := __FUNC__


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