Consolidate print_format creation

We almost had a factory in print_format::parse_print, so let's take that
the rest of the way.  This way we don't have so much duplication in
initializing the print flags.

* staptree.cxx (print_format::parse_print): Replaced with...
  (print_format::create): New factory to parse and create print_formats.
* elaborate.cxx (add_global_var_display): Use this factory.
* parse.cxx (parser::parse_symbol): Ditto.
* tapset-mark.cxx
  (mark_var_expanding_visitor::visit_target_symbol_context): Ditto.
* tapset-utrace.cxx
  (utrace_var_expanding_visitor::visit_target_symbol_arg): Ditto.
* tapsets.cxx
  (dwarf_var_expanding_visitor::visit_target_symbol_context): Ditto.
  (tracepoint_var_expanding_visitor::visit_target_symbol_context) Ditto.

1 files changed, 35 insertions, 31 deletions

diff --git a/staptree.cxx b/staptree.cxx
index 090f0bd3..bc552454 100644
--- a/staptree.cxx
+++ b/staptree.cxx
@@ -405,52 +405,56 @@ void functioncall::print (ostream& o) const
 }
 
 
-bool
-print_format::parse_print(const std::string &name,
-  bool &stream, bool &format, bool &delim, bool &newline, bool &_char)
+print_format*
+print_format::create(const token *t)
 {
-  const char *n = name.c_str();
+  bool stream, format, delim, newline, _char;
+  const char *n = t->content.c_str();
 
   stream = true;
   format = delim = newline = _char = false;
 
   if (strcmp(n, "print_char") == 0)
+    _char = true;
+  else
     {
-      _char = true;
-      return true;
-    }
-
-  if (*n == 's')
-    {
-      stream = false;
-      ++n;
-    }
+      if (*n == 's')
+	{
+	  stream = false;
+	  ++n;
+	}
 
-  if (0 != strncmp(n, "print", 5))
-    return false;
-  n += 5;
+      if (0 != strncmp(n, "print", 5))
+	return NULL;
+      n += 5;
 
-  if (*n == 'f')
-    {
-      format = true;
-      ++n;
-    }
-  else
-    {
-      if (*n == 'd')
-        {
-	  delim = true;
+      if (*n == 'f')
+	{
+	  format = true;
 	  ++n;
 	}
+      else
+	{
+	  if (*n == 'd')
+	    {
+	      delim = true;
+	      ++n;
+	    }
 
-      if (*n == 'l' && *(n+1) == 'n')
-        {
-	  newline = true;
-	  n += 2;
+	  if (*n == 'l' && *(n+1) == 'n')
+	    {
+	      newline = true;
+	      n += 2;
+	    }
 	}
+
+      if (*n != '\0')
+	return NULL;
     }
 
-  return (*n == '\0');
+  print_format *pf = new print_format(stream, format, delim, newline, _char);
+  pf->tok = t;
+  return pf;
 }