zconf.tab.c_shipped

busybox最新版的源码:学习和应用的好东东,多的不说了,大家看后再说吧

  register int yystate;
  register int yyn;
  int yyresult;
  /* Number of tokens to shift before error messages enabled.  */
  int yyerrstatus;
  /* Look-ahead token as an internal (translated) token number.  */
  int yytoken = 0;

  /* Three stacks and their tools:
     `yyss': related to states,
     `yyvs': related to semantic values,
     `yyls': related to locations.

     Refer to the stacks thru separate pointers, to allow yyoverflow
     to reallocate them elsewhere.  */

  /* The state stack.  */
  short int yyssa[YYINITDEPTH];
  short int *yyss = yyssa;
  register short int *yyssp;

  /* The semantic value stack.  */
  YYSTYPE yyvsa[YYINITDEPTH];
  YYSTYPE *yyvs = yyvsa;
  register YYSTYPE *yyvsp;



#define YYPOPSTACK   (yyvsp--, yyssp--)

  YYSIZE_T yystacksize = YYINITDEPTH;

  /* The variables used to return semantic value and location from the
     action routines.  */
  YYSTYPE yyval;


  /* When reducing, the number of symbols on the RHS of the reduced
     rule.  */
  int yylen;

  YYDPRINTF ((stderr, "Starting parse\n"));

  yystate = 0;
  yyerrstatus = 0;
  yynerrs = 0;
  yychar = YYEMPTY;		/* Cause a token to be read.  */

  /* Initialize stack pointers.
     Waste one element of value and location stack
     so that they stay on the same level as the state stack.
     The wasted elements are never initialized.  */

  yyssp = yyss;
  yyvsp = yyvs;


  yyvsp[0] = yylval;

  goto yysetstate;

/*------------------------------------------------------------.
| yynewstate -- Push a new state, which is found in yystate.  |
`------------------------------------------------------------*/
 yynewstate:
  /* In all cases, when you get here, the value and location stacks
     have just been pushed. so pushing a state here evens the stacks.
     */
  yyssp++;

 yysetstate:
  *yyssp = yystate;

  if (yyss + yystacksize - 1 <= yyssp)
    {
      /* Get the current used size of the three stacks, in elements.  */
      YYSIZE_T yysize = yyssp - yyss + 1;

#ifdef yyoverflow
      {
	/* Give user a chance to reallocate the stack. Use copies of
	   these so that the &'s don't force the real ones into
	   memory.  */
	YYSTYPE *yyvs1 = yyvs;
	short int *yyss1 = yyss;


	/* Each stack pointer address is followed by the size of the
	   data in use in that stack, in bytes.  This used to be a
	   conditional around just the two extra args, but that might
	   be undefined if yyoverflow is a macro.  */
	yyoverflow ("parser stack overflow",
		    &yyss1, yysize * sizeof (*yyssp),
		    &yyvs1, yysize * sizeof (*yyvsp),

		    &yystacksize);

	yyss = yyss1;
	yyvs = yyvs1;
      }
#else /* no yyoverflow */
# ifndef YYSTACK_RELOCATE
      goto yyoverflowlab;
# else
      /* Extend the stack our own way.  */
      if (YYMAXDEPTH <= yystacksize)
	goto yyoverflowlab;
      yystacksize *= 2;
      if (YYMAXDEPTH < yystacksize)
	yystacksize = YYMAXDEPTH;

      {
	short int *yyss1 = yyss;
	union yyalloc *yyptr =
	  (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
	if (! yyptr)
	  goto yyoverflowlab;
	YYSTACK_RELOCATE (yyss);
	YYSTACK_RELOCATE (yyvs);

#  undef YYSTACK_RELOCATE
	if (yyss1 != yyssa)
	  YYSTACK_FREE (yyss1);
      }
# endif
#endif /* no yyoverflow */

      yyssp = yyss + yysize - 1;
      yyvsp = yyvs + yysize - 1;


      YYDPRINTF ((stderr, "Stack size increased to %lu\n",
		  (unsigned long) yystacksize));

      if (yyss + yystacksize - 1 <= yyssp)
	YYABORT;
    }

  YYDPRINTF ((stderr, "Entering state %d\n", yystate));

  goto yybackup;

/*-----------.
| yybackup.  |
`-----------*/
yybackup:

/* Do appropriate processing given the current state.  */
/* Read a look-ahead token if we need one and don't already have one.  */
/* yyresume: */

  /* First try to decide what to do without reference to look-ahead token.  */

  yyn = yypact[yystate];
  if (yyn == YYPACT_NINF)
    goto yydefault;

  /* Not known => get a look-ahead token if don't already have one.  */

  /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol.  */
  if (yychar == YYEMPTY)
    {
      YYDPRINTF ((stderr, "Reading a token: "));
      yychar = YYLEX;
    }

  if (yychar <= YYEOF)
    {
      yychar = yytoken = YYEOF;
      YYDPRINTF ((stderr, "Now at end of input.\n"));
    }
  else
    {
      yytoken = YYTRANSLATE (yychar);
      YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
    }

  /* If the proper action on seeing token YYTOKEN is to reduce or to
     detect an error, take that action.  */
  yyn += yytoken;
  if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
    goto yydefault;
  yyn = yytable[yyn];
  if (yyn <= 0)
    {
      if (yyn == 0 || yyn == YYTABLE_NINF)
	goto yyerrlab;
      yyn = -yyn;
      goto yyreduce;
    }

  if (yyn == YYFINAL)
    YYACCEPT;

  /* Shift the look-ahead token.  */
  YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);

  /* Discard the token being shifted unless it is eof.  */
  if (yychar != YYEOF)
    yychar = YYEMPTY;

  *++yyvsp = yylval;


  /* Count tokens shifted since error; after three, turn off error
     status.  */
  if (yyerrstatus)
    yyerrstatus--;

  yystate = yyn;
  goto yynewstate;


/*-----------------------------------------------------------.
| yydefault -- do the default action for the current state.  |
`-----------------------------------------------------------*/
yydefault:
  yyn = yydefact[yystate];
  if (yyn == 0)
    goto yyerrlab;
  goto yyreduce;


/*-----------------------------.
| yyreduce -- Do a reduction.  |
`-----------------------------*/
yyreduce:
  /* yyn is the number of a rule to reduce with.  */
  yylen = yyr2[yyn];

  /* If YYLEN is nonzero, implement the default value of the action:
     `$$ = $1'.

     Otherwise, the following line sets YYVAL to garbage.
     This behavior is undocumented and Bison
     users should not rely upon it.  Assigning to YYVAL
     unconditionally makes the parser a bit smaller, and it avoids a
     GCC warning that YYVAL may be used uninitialized.  */
  yyval = yyvsp[1-yylen];


  YY_REDUCE_PRINT (yyn);
  switch (yyn)
    {
        case 8:

    { zconf_error("unexpected end statement"); ;}
    break;

  case 9:

    { zconf_error("unknown statement \"%s\"", (yyvsp[-2].string)); ;}
    break;

  case 10:

    {
	zconf_error("unexpected option \"%s\"", kconf_id_strings + (yyvsp[-2].id)->name);
;}
    break;

  case 11:

    { zconf_error("invalid statement"); ;}
    break;

  case 25:

    { zconf_error("unknown option \"%s\"", (yyvsp[-2].string)); ;}
    break;

  case 26:

    { zconf_error("invalid option"); ;}
    break;

  case 27:

    {
	struct symbol *sym = sym_lookup((yyvsp[-1].string), 0);
	sym->flags |= SYMBOL_OPTIONAL;
	menu_add_entry(sym);
	printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), (yyvsp[-1].string));
;}
    break;

  case 28:

    {
	menu_end_entry();
	printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 29:

    {
	struct symbol *sym = sym_lookup((yyvsp[-1].string), 0);
	sym->flags |= SYMBOL_OPTIONAL;
	menu_add_entry(sym);
	printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), (yyvsp[-1].string));
;}
    break;

  case 30:

    {
	if (current_entry->prompt)
		current_entry->prompt->type = P_MENU;
	else
		zconfprint("warning: menuconfig statement without prompt");
	menu_end_entry();
	printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 37:

    {
	menu_set_type((yyvsp[-2].id)->stype);
	printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
		zconf_curname(), zconf_lineno(),
		(yyvsp[-2].id)->stype);
;}
    break;

  case 38:

    {
	menu_add_prompt(P_PROMPT, (yyvsp[-2].string), (yyvsp[-1].expr));
	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 39:

    {
	menu_add_expr(P_DEFAULT, (yyvsp[-2].expr), (yyvsp[-1].expr));
	if ((yyvsp[-3].id)->stype != S_UNKNOWN)
		menu_set_type((yyvsp[-3].id)->stype);
	printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
		zconf_curname(), zconf_lineno(),
		(yyvsp[-3].id)->stype);
;}
    break;

  case 40:

    {
	menu_add_symbol(P_SELECT, sym_lookup((yyvsp[-2].string), 0), (yyvsp[-1].expr));
	printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 41:

    {
	menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,(yyvsp[-3].symbol), (yyvsp[-2].symbol)), (yyvsp[-1].expr));
	printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 42:

    {
	struct symbol *sym = sym_lookup(NULL, 0);
	sym->flags |= SYMBOL_CHOICE;
	menu_add_entry(sym);
	menu_add_expr(P_CHOICE, NULL, NULL);
	printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 43:

    {
	(yyval.menu) = menu_add_menu();
;}
    break;

  case 44:

    {
	if (zconf_endtoken((yyvsp[0].id), T_CHOICE, T_ENDCHOICE)) {
		menu_end_menu();
		printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
	}
;}
    break;

  case 52:

    {
	menu_add_prompt(P_PROMPT, (yyvsp[-2].string), (yyvsp[-1].expr));
	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 53:

    {
	if ((yyvsp[-2].id)->stype == S_BOOLEAN || (yyvsp[-2].id)->stype == S_TRISTATE) {
		menu_set_type((yyvsp[-2].id)->stype);
		printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
			zconf_curname(), zconf_lineno(),
			(yyvsp[-2].id)->stype);
	} else
		YYERROR;
;}
    break;

  case 54:

    {
	current_entry->sym->flags |= SYMBOL_OPTIONAL;
	printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 55:

    {
	if ((yyvsp[-3].id)->stype == S_UNKNOWN) {
		menu_add_symbol(P_DEFAULT, sym_lookup((yyvsp[-2].string), 0), (yyvsp[-1].expr));
		printd(DEBUG_PARSE, "%s:%d:default\n",
			zconf_curname(), zconf_lineno());
	} else
		YYERROR;
;}
    break;

  case 58:

    {
	printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
	menu_add_entry(NULL);
	menu_add_dep((yyvsp[-1].expr));
	(yyval.menu) = menu_add_menu();
;}
    break;

  case 59:

    {
	if (zconf_endtoken((yyvsp[0].id), T_IF, T_ENDIF)) {
		menu_end_menu();
		printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
	}
;}
    break;

  case 65:

    {
	menu_add_entry(NULL);
	menu_add_prompt(P_MENU, (yyvsp[-1].string), NULL);
	printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 66:

    {
	(yyval.menu) = menu_add_menu();
;}
    break;

  case 67:

    {
	if (zconf_endtoken((yyvsp[0].id), T_MENU, T_ENDMENU)) {
		menu_end_menu();
		printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
	}
;}
    break;

  case 73:

    {
	printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), (yyvsp[-1].string));
	zconf_nextfile((yyvsp[-1].string));
;}
    break;

  case 74:

    {
	menu_add_entry(NULL);
	menu_add_prompt(P_COMMENT, (yyvsp[-1].string), NULL);
	printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 75:

    {
	menu_end_entry();
;}
    break;

  case 76:

    {
	printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
	zconf_starthelp();
;}
    break;

  case 77:

    {
	current_entry->sym->help = (yyvsp[0].string);
;}
    break;

  case 82:

    {
	menu_add_dep((yyvsp[-1].expr));
	printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 83:

    {
	menu_add_dep((yyvsp[-1].expr));
	printd(DEBUG_PARSE, "%s:%d:depends\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 84:

    {
	menu_add_dep((yyvsp[-1].expr));
	printd(DEBUG_PARSE, "%s:%d:requires\n", zconf_curname(), zconf_lineno());
;}
    break;

  case 86:

    {