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27    Bison output files to be licensed under the GNU General Public
36 /* All symbols defined below should begin with yy or YY, to avoid
39 There are some unavoidable exceptions within include files to
75 * Permission is hereby granted, free of charge, to any person obtaining
77 * "Software"), to deal in the Software without restriction, including
78 * without limitation the rights to use, copy, modify, merge, publish,
79 * distribute, sublicense, and/or sell copies of the Software, and to
80 * permit persons to whom the Software is furnished to do so, subject to
87 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
95 * shall not be used in advertising or otherwise to promote the sale, use
115 /* YYLTYPE_IS_TRIVIAL and YYENABLE_NLS defined to suppress warnings */
345 /* Identity function, used to suppress warnings about constant conditions. */
398 to allow for a few compiler-allocated temporary stack slots. */
447 /* The size of an array large to enough to hold all stacks, each with
455 /* Relocate STACK from its old location to the new one. The
458 stack. Advance YYPTR to a properly aligned location for the next
474 /* Copy COUNT objects from FROM to TO. The source and destination do
478 # define YYCOPY(To, From, Count) \
479 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
481 # define YYCOPY(To, From, Count) \
486 (To)[yyi] = (From)[yyi]; \
507 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
514 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
620 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
656 Performed when YYTABLE doesn't specify something else to do. Zero
713 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
781 to ease the transition to the new meaning of YYERROR, for GCC.
783 YYFAIL appears to be in use. Nevertheless, it is formally deprecated
784 in Bison 2.4.2's NEWS entry, where a plan to phase it out is
789 /* This is here to suppress warnings from the GCC cpp's
791 some users do, and we want to make it easy for users to remove
818 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
819 If N is 0, then set CURRENT to the empty location which ends
944 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
976 | Report that the YYRULE is going to be reduced. |
1028 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
1069 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
1094 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
1146 not large enough to hold the message. In that case, also set
1147 *YYMSG_ALLOC to the required number of bytes. Return 2 if the
1148 required number of bytes is too large to store. */
1165 /* There are many possibilities here to consider:
1166 - Assume YYFAIL is not used. It's too flawed to consider. See
1176 detecting the absence of a lookahead is sufficient to determine
1177 that there is no unexpected or expected token to report. In that
1183 - Of course, the expected token list depends on states to have
1185 to perform extra reductions after fetching a lookahead from the
1190 accepted due to an error action in a later state.
1198 /* Start YYX at -YYN if negative to avoid negative indexes in
1279 | Release the memory associated to this symbol. |
1363 /* Number of tokens to shift before error messages enabled. */
1367 `yyss': related to states.
1368 `yyvs': related to semantic values.
1370 Refer to the stacks thru separate pointers, to allow yyoverflow
1371 to reallocate them elsewhere. */
1389 /* The variables used to return semantic value and location from the
1403 Keep to zero when no symbol should be popped. */
1416 yychar = YYEMPTY; /* Cause a token to be read. */
1445 /* Give user a chance to reallocate the stack. Use copies of
1452 data in use in that stack, in bytes. This used to be a
1492 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1514 /* First try to decide what to do without reference to lookahead token. */
1539 /* If the proper action on seeing token YYTOKEN is to reduce or to
1584 /* yyn is the number of a rule to reduce with. */
1590 Otherwise, the following line sets YYVAL to garbage.
1592 users should not rely upon it. Assigning to YYVAL
1882 to an incorrect destructor call or verbose syntax error message
1893 that goes to, based on the state we popped back to and the rule
1959 /* If just tried and failed to reuse lookahead token after an
1976 /* Else will try to reuse lookahead token after shifting the error
2115 /* Miscellaneous functions to store TOKENs into the structure */