analyzer,c++: add placeholder implementation of ana::translation_unit for C++

Implement ana::translation_unit for the C++ frontend with a
no-op placeholder implementation, for now.

No functional change intended; a follow-up may implement
things further.

gcc/cp/ChangeLog:
	* parser.cc: Include "analyzer/analyzer-language.h".
	(ana::cp_translation_unit): New class.
	(cp_parser_translation_unit): Add call to
	ana::on_finish_translation_unit.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/gcc/cp/parser.cc b/gcc/cp/parser.cc
index e165b2a..1fb9e7f 100644
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -50,6 +50,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "contracts.h"
 #include "bitmap.h"
 #include "builtins.h"
+#include "analyzer/analyzer-language.h"
 
 
 /* The lexer.  */
@@ -286,6 +287,37 @@ static FILE *cp_lexer_debug_stream;
    sizeof, typeof, or alignof.  */
 int cp_unevaluated_operand;
 
+#if ENABLE_ANALYZER
+
+namespace ana {
+
+/* Concrete implementation of ana::translation_unit for the C++ frontend.  */
+
+class cp_translation_unit : public translation_unit
+{
+public:
+  tree lookup_constant_by_id (tree /*id*/) const final override
+  {
+    return NULL_TREE;
+  }
+
+  tree
+  lookup_type_by_id (tree /*id*/) const final override
+  {
+    return NULL_TREE;
+  }
+
+  tree
+  lookup_global_var_by_id (tree /*id*/) const final override
+  {
+    return NULL_TREE;
+  }
+};
+
+} // namespace ana
+
+#endif /* #if ENABLE_ANALYZER */
+
 /* Dump up to NUM tokens in BUFFER to FILE starting with token
    START_TOKEN.  If START_TOKEN is NULL, the dump starts with the
    first token in BUFFER.  If NUM is 0, dump all the tokens.  If
@@ -5471,6 +5503,14 @@ cp_parser_translation_unit (cp_parser* parser)
 	cp_parser_toplevel_declaration (parser);
     }
 
+#if ENABLE_ANALYZER
+  if (flag_analyzer)
+    {
+      ana::cp_translation_unit tu;
+      ana::on_finish_translation_unit (tu);
+    }
+#endif
+
   /* Get rid of the token array; we don't need it any more.  */
   cp_lexer_destroy (parser->lexer);
   parser->lexer = NULL;