[src/trunk]: src/external/gpl3/gdb/dist/gdb Improve previous: generated names...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/107c4fb2015c
branches:  trunk
changeset: 979097:107c4fb2015c
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Dec 13 16:50:47 2020 +0000

description:
Improve previous: generated names end with .[[:digits:]] so look for that
instead.

diffstat:

 external/gpl3/gdb/dist/gdb/c-exp.y |  90 ++++++++++++++++++++++++-------------
 1 files changed, 58 insertions(+), 32 deletions(-)

diffs (114 lines):

diff -r ec6558475f83 -r 107c4fb2015c external/gpl3/gdb/dist/gdb/c-exp.y
--- a/external/gpl3/gdb/dist/gdb/c-exp.y        Sun Dec 13 16:47:19 2020 +0000
+++ b/external/gpl3/gdb/dist/gdb/c-exp.y        Sun Dec 13 16:50:47 2020 +0000
@@ -2608,7 +2608,63 @@
 /* Depth of parentheses.  */
 static int paren_depth;
 
-static const char PART[] = ".part.";
+static int
+get_namelen (const char *tokstart, bool dot)
+{
+  int c;
+  int namelen;
+
+  for (c = tokstart[namelen];
+       (c == '_' || c == '$' || (dot && c == '.') || c_ident_is_alnum (c) || c == '<');)
+    {
+      /* Template parameter lists are part of the name.
+        FIXME: This mishandles `print $a<4&&$a>3'.  */
+
+      if (c == '<')
+       {
+         if (! is_cast_operator (tokstart, namelen))
+           {
+             /* Scan ahead to get rest of the template specification.  Note
+                that we look ahead only when the '<' adjoins non-whitespace
+                characters; for comparison expressions, e.g. "a < b > c",
+                there must be spaces before the '<', etc. */
+             const char *p = find_template_name_end (tokstart + namelen);
+
+             if (p)
+               namelen = p - tokstart;
+           }
+         break;
+       }
+      c = tokstart[++namelen];
+    }
+  return namelen;
+}
+
+static bool is_generated_symbol (const char *symbol)
+{
+  /* generated symbol are of the form:
+
+     <symbol>.<number>
+     <symbol>.isra.<number>
+     <symbol>.part.<number>
+
+    So we see if the symbol ends with .<number>
+   */
+
+  int len = get_namelen (symbol, true);
+  int ndigits;
+
+  if (len-- == 0)
+    return false;
+
+  for (ndigits = 0; ndigits <= len && ISDIGIT(symbol[len - ndigits]); ndigits++)
+    continue;
+
+  if (ndigits == 0)
+    return false;
+
+  return symbol[len - ndigits] == '.';
+}
 
 /* Read one token, getting characters through lexptr.  */
 
@@ -2725,13 +2781,6 @@
       return c;
 
     case '.':
-      /* Gross! recognize <symbol>.part.N */
-      if (strncmp(pstate->lexptr, PART, sizeof(PART) - 1) == 0 &&
-       ISDIGIT(pstate->lexptr[sizeof(PART) - 1]) &&
-       pstate->lexptr[sizeof(PART)] == '\0')
-       {
-         break;
-       }
       /* Might be a floating point number.  */
       if (pstate->lexptr[1] < '0' || pstate->lexptr[1] > '9')
        {
@@ -2895,30 +2944,7 @@
     error (_("Invalid character '%c' in expression."), c);
 
   /* It's a name.  See how long it is.  */
-  namelen = 0;
-  for (c = tokstart[namelen];
-       (c == '_' || c == '$' || c == '.' || c_ident_is_alnum (c) || c == '<');)
-    {
-      /* Template parameter lists are part of the name.
-        FIXME: This mishandles `print $a<4&&$a>3'.  */
-
-      if (c == '<')
-       {
-         if (! is_cast_operator (tokstart, namelen))
-           {
-             /* Scan ahead to get rest of the template specification.  Note
-                that we look ahead only when the '<' adjoins non-whitespace
-                characters; for comparison expressions, e.g. "a < b > c",
-                there must be spaces before the '<', etc. */
-             const char *p = find_template_name_end (tokstart + namelen);
-
-             if (p)
-               namelen = p - tokstart;
-           }
-         break;
-       }
-      c = tokstart[++namelen];
-    }
+  namelen = get_namelen (tokstart, is_generated_symbol (tokstart));
 
   /* The token "if" terminates the expression and is NOT removed from
      the input stream.  It doesn't count if it appears in the