[PATCH v2 04/21] abg-ir: elf_symbol: add is_suppressed field

[Matthias Maennich]

In the context of libabigail and a single library run (when reading from
dwarf or from xml), a symbol is either suppressed or it is not. While
one could argue that this is a property of the read_context, the
read_context might not be around anymore when the symbol still is.
Hence, persist the 'is_suppressed' state along with the symbol itself.

        * include/abg-ir.h (elf_symbol::elf_symbol): Add is_suppressed
        parameter.
        (elf_symbol::create): Likewise.
        (elf_symbol::is_suppressed): New getter declaration.
        (elf_symbol::set_is_suppressed): New setter declaration.
        * src/abg-ir.cc (elf_symbol::priv::priv): Add is_suppressed
        parameter.
        (elf_symbol::priv::is_suppressed_): New field.
        (elf_symbol::elf_symbol): Add is_suppressed parameter.
        (elf_symbol::create): Likewise.
        (elf_symbol::is_suppressed): New getter implementation.
        (elf_symbol::set_is_suppressed): New setter implementation.

Reviewed-by: Giuliano Procida <gprocida@google.com>
Signed-off-by: Matthias Maennich <maennich@google.com>
---
 include/abg-ir.h | 12 ++++++++++--
 src/abg-ir.cc    | 29 ++++++++++++++++++++++-------
 2 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/include/abg-ir.h b/include/abg-ir.h
index 5766385c8b73..838d3f80695a 100644
--- a/include/abg-ir.h
+++ b/include/abg-ir.h
@@ -853,7 +853,8 @@ private:
 	     const version&	ve,
 	     visibility		vi,
 	     bool		is_linux_string_cst = false,
-	     bool		is_in_ksymtab = false);
+	     bool		is_in_ksymtab = false,
+	     bool		is_suppressed = false);
 
   elf_symbol(const elf_symbol&);
 
@@ -877,7 +878,8 @@ public:
 	 const version&	    ve,
 	 visibility	    vi,
 	 bool		    is_linux_string_cst = false,
-	 bool		    is_in_ksymtab = false);
+	 bool		    is_in_ksymtab = false,
+	 bool		    is_suppressed = false);
 
   const environment*
   get_environment() const;
@@ -951,6 +953,12 @@ public:
   void
   set_is_in_ksymtab(bool is_in_ksymtab);
 
+  bool
+  is_suppressed() const;
+
+  void
+  set_is_suppressed(bool is_suppressed);
+
   const elf_symbol_sptr
   get_main_symbol() const;
 
diff --git a/src/abg-ir.cc b/src/abg-ir.cc
index 00fc00b064d1..c69284f0946a 100644
--- a/src/abg-ir.cc
+++ b/src/abg-ir.cc
@@ -1301,6 +1301,7 @@ struct elf_symbol::priv
   bool			is_common_;
   bool			is_linux_string_cst_;
   bool			is_in_ksymtab_;
+  bool			is_suppressed_;
   elf_symbol_wptr	main_symbol_;
   elf_symbol_wptr	next_alias_;
   elf_symbol_wptr	next_common_instance_;
@@ -1316,7 +1317,8 @@ struct elf_symbol::priv
       is_defined_(false),
       is_common_(false),
       is_linux_string_cst_(false),
-      is_in_ksymtab_(false)
+      is_in_ksymtab_(false),
+      is_suppressed_(false)
   {}
 
   priv(const environment*	  e,
@@ -1330,7 +1332,8 @@ struct elf_symbol::priv
        const elf_symbol::version& ve,
        elf_symbol::visibility	  vi,
        bool			  is_linux_string_cst,
-       bool			  is_in_ksymtab)
+       bool			  is_in_ksymtab,
+       bool			  is_suppressed)
     : env_(e),
       index_(i),
       size_(s),
@@ -1342,7 +1345,8 @@ struct elf_symbol::priv
       is_defined_(d),
       is_common_(c),
       is_linux_string_cst_(is_linux_string_cst),
-      is_in_ksymtab_(is_in_ksymtab)
+      is_in_ksymtab_(is_in_ksymtab),
+      is_suppressed_(is_suppressed)
   {
     if (!is_common_)
       is_common_ = type_ == COMMON_TYPE;
@@ -1399,7 +1403,8 @@ elf_symbol::elf_symbol(const environment* e,
 		       const version&	  ve,
 		       visibility	  vi,
 		       bool		  is_linux_string_cst,
-		       bool		  is_in_ksymtab)
+		       bool		  is_in_ksymtab,
+		       bool		  is_suppressed)
   : priv_(new priv(e,
 		   i,
 		   s,
@@ -1411,7 +1416,8 @@ elf_symbol::elf_symbol(const environment* e,
 		   ve,
 		   vi,
 		   is_linux_string_cst,
-		   is_in_ksymtab))
+		   is_in_ksymtab,
+		   is_suppressed))
 {}
 
 /// Factory of instances of @ref elf_symbol.
@@ -1469,11 +1475,12 @@ elf_symbol::create(const environment* e,
 		   const version&     ve,
 		   visibility	      vi,
 		   bool		      is_linux_string_cst,
-		   bool		      is_in_ksymtab)
+		   bool		      is_in_ksymtab,
+		   bool		      is_suppressed)
 {
   elf_symbol_sptr sym(new elf_symbol(e, i, s, n, t, b, d, c, ve, vi,
 				     is_linux_string_cst,
-				     is_in_ksymtab));
+				     is_in_ksymtab, is_suppressed));
   sym->priv_->main_symbol_ = sym;
   return sym;
 }
@@ -1701,6 +1708,14 @@ void
 elf_symbol::set_is_in_ksymtab(bool is_in_ksymtab)
 {priv_->is_in_ksymtab_ = is_in_ksymtab;}
 
+bool
+elf_symbol::is_suppressed() const
+{return priv_->is_suppressed_;}
+
+void
+elf_symbol::set_is_suppressed(bool is_suppressed)
+{priv_->is_suppressed_ = is_suppressed;}
+
 /// @name Elf symbol aliases
 ///
 /// An alias A for an elf symbol S is a symbol that is defined at the
-- 
2.27.0.212.ge8ba1cc988-goog