+/* Given a state stack such that *YYBOTTOM is its bottom, such that
+ *YYTOP is either its top or is YYTOP_EMPTY to indicate an empty
+ stack, and such that *YYCAPACITY is the maximum number of elements it
+ can hold without a reallocation, make sure there is enough room to
+ store YYADD more elements. If not, allocate a new stack using
+ YYSTACK_ALLOC, copy the existing elements, and adjust *YYBOTTOM,
+ *YYTOP, and *YYCAPACITY to reflect the new capacity and memory
+ location. If *YYBOTTOM != YYBOTTOM_NO_FREE, then free the old stack
+ using YYSTACK_FREE. Return 0 if successful or if no reallocation is
+ required. Return 1 if memory is exhausted. */
+static int
+yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,
+#if ]b4_api_PREFIX[DEBUG
+ char const *yydebug_prefix,
+ char const *yydebug_suffix,
+#endif
+ yytype_int16 **yybottom,
+ yytype_int16 *yybottom_no_free,
+ yytype_int16 **yytop, yytype_int16 *yytop_empty)
+{
+ YYSIZE_T yysize_old =
+ *yytop == yytop_empty ? 0 : *yytop - *yybottom + 1;
+ YYSIZE_T yysize_new = yysize_old + yyadd;
+ if (*yycapacity < yysize_new)
+ {
+ YYSIZE_T yyalloc = 2 * yysize_new;
+ yytype_int16 *yybottom_new;
+ /* Use YYMAXDEPTH for maximum stack size given that the stack
+ should never need to grow larger than the main state stack
+ needs to grow without LAC. */
+ if (YYMAXDEPTH < yysize_new)
+ {
+ YYDPRINTF ((stderr, "%smax size exceeded%s", yydebug_prefix,
+ yydebug_suffix));
+ return 1;
+ }
+ if (YYMAXDEPTH < yyalloc)
+ yyalloc = YYMAXDEPTH;
+ yybottom_new =
+ (yytype_int16*) YYSTACK_ALLOC (yyalloc * sizeof *yybottom_new);
+ if (!yybottom_new)
+ {
+ YYDPRINTF ((stderr, "%srealloc failed%s", yydebug_prefix,
+ yydebug_suffix));
+ return 1;
+ }
+ if (*yytop != yytop_empty)
+ {
+ YYCOPY (yybottom_new, *yybottom, yysize_old);
+ *yytop = yybottom_new + (yysize_old - 1);
+ }
+ if (*yybottom != yybottom_no_free)
+ YYSTACK_FREE (*yybottom);
+ *yybottom = yybottom_new;
+ *yycapacity = yyalloc;]m4_if(b4_percent_define_get([[parse.lac.memory-trace]]),
+ [full], [[
+ YYDPRINTF ((stderr, "%srealloc to %lu%s", yydebug_prefix,
+ (unsigned long int) yyalloc, yydebug_suffix));]])[
+ }
+ return 0;
+}
+
projects / bison.git / blobdiff