zconf.tab.c_shipped

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

  case 77:

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

  case 78:

    {
	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:

    {
	menu_add_prop(P_PROMPT, yyvsp[-1].string, NULL, yyvsp[0].expr);
;}
    break;

  case 89:

    { yyval.token = T_ENDMENU; ;}
    break;

  case 90:

    { yyval.token = T_ENDCHOICE; ;}
    break;

  case 91:

    { yyval.token = T_ENDIF; ;}
    break;

  case 94:

    { yyval.expr = NULL; ;}
    break;

  case 95:

    { yyval.expr = yyvsp[0].expr; ;}
    break;

  case 96:

    { yyval.expr = expr_alloc_symbol(yyvsp[0].symbol); ;}
    break;

  case 97:

    { yyval.expr = expr_alloc_comp(E_EQUAL, yyvsp[-2].symbol, yyvsp[0].symbol); ;}
    break;

  case 98:

    { yyval.expr = expr_alloc_comp(E_UNEQUAL, yyvsp[-2].symbol, yyvsp[0].symbol); ;}
    break;

  case 99:

    { yyval.expr = yyvsp[-1].expr; ;}
    break;

  case 100:

    { yyval.expr = expr_alloc_one(E_NOT, yyvsp[0].expr); ;}
    break;

  case 101:

    { yyval.expr = expr_alloc_two(E_OR, yyvsp[-2].expr, yyvsp[0].expr); ;}
    break;

  case 102:

    { yyval.expr = expr_alloc_two(E_AND, yyvsp[-2].expr, yyvsp[0].expr); ;}
    break;

  case 103:

    { yyval.symbol = sym_lookup(yyvsp[0].string, 0); free(yyvsp[0].string); ;}
    break;

  case 104:

    { yyval.symbol = sym_lookup(yyvsp[0].string, 1); free(yyvsp[0].string); ;}
    break;


    }

/* Line 999 of yacc.c.  */


  yyvsp -= yylen;
  yyssp -= yylen;


  YY_STACK_PRINT (yyss, yyssp);

  *++yyvsp = yyval;


  /* Now `shift' the result of the reduction.  Determine what state
     that goes to, based on the state we popped back to and the rule
     number reduced by.  */

  yyn = yyr1[yyn];

  yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
  if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
    yystate = yytable[yystate];
  else
    yystate = yydefgoto[yyn - YYNTOKENS];

  goto yynewstate;


/*------------------------------------.
| yyerrlab -- here on detecting error |
`------------------------------------*/
yyerrlab:
  /* If not already recovering from an error, report this error.  */
  if (!yyerrstatus)
    {
      ++yynerrs;
#if YYERROR_VERBOSE
      yyn = yypact[yystate];

      if (YYPACT_NINF < yyn && yyn < YYLAST)
	{
	  YYSIZE_T yysize = 0;
	  int yytype = YYTRANSLATE (yychar);
	  char *yymsg;
	  int yyx, yycount;

	  yycount = 0;
	  /* Start YYX at -YYN if negative to avoid negative indexes in
	     YYCHECK.  */
	  for (yyx = yyn < 0 ? -yyn : 0;
	       yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++)
	    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
	      yysize += yystrlen (yytname[yyx]) + 15, yycount++;
	  yysize += yystrlen ("syntax error, unexpected ") + 1;
	  yysize += yystrlen (yytname[yytype]);
	  yymsg = (char *) YYSTACK_ALLOC (yysize);
	  if (yymsg != 0)
	    {
	      char *yyp = yystpcpy (yymsg, "syntax error, unexpected ");
	      yyp = yystpcpy (yyp, yytname[yytype]);

	      if (yycount < 5)
		{
		  yycount = 0;
		  for (yyx = yyn < 0 ? -yyn : 0;
		       yyx < (int) (sizeof (yytname) / sizeof (char *));
		       yyx++)
		    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
		      {
			const char *yyq = ! yycount ? ", expecting " : " or ";
			yyp = yystpcpy (yyp, yyq);
			yyp = yystpcpy (yyp, yytname[yyx]);
			yycount++;
		      }
		}
	      yyerror (yymsg);
	      YYSTACK_FREE (yymsg);
	    }
	  else
	    yyerror ("syntax error; also virtual memory exhausted");
	}
      else
#endif /* YYERROR_VERBOSE */
	yyerror ("syntax error");
    }



  if (yyerrstatus == 3)
    {
      /* If just tried and failed to reuse lookahead token after an
	 error, discard it.  */

      /* Return failure if at end of input.  */
      if (yychar == YYEOF)
        {
	  /* Pop the error token.  */
          YYPOPSTACK;
	  /* Pop the rest of the stack.  */
	  while (yyss < yyssp)
	    {
	      YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
	      yydestruct (yystos[*yyssp], yyvsp);
	      YYPOPSTACK;
	    }
	  YYABORT;
        }

      YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
      yydestruct (yytoken, &yylval);
      yychar = YYEMPTY;

    }

  /* Else will try to reuse lookahead token after shifting the error
     token.  */
  goto yyerrlab1;


/*----------------------------------------------------.
| yyerrlab1 -- error raised explicitly by an action.  |
`----------------------------------------------------*/
yyerrlab1:
  yyerrstatus = 3;	/* Each real token shifted decrements this.  */

  for (;;)
    {
      yyn = yypact[yystate];
      if (yyn != YYPACT_NINF)
	{
	  yyn += YYTERROR;
	  if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
	    {
	      yyn = yytable[yyn];
	      if (0 < yyn)
		break;
	    }
	}

      /* Pop the current state because it cannot handle the error token.  */
      if (yyssp == yyss)
	YYABORT;

      YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
      yydestruct (yystos[yystate], yyvsp);
      yyvsp--;
      yystate = *--yyssp;

      YY_STACK_PRINT (yyss, yyssp);
    }

  if (yyn == YYFINAL)
    YYACCEPT;

  YYDPRINTF ((stderr, "Shifting error token, "));

  *++yyvsp = yylval;


  yystate = yyn;
  goto yynewstate;


/*-------------------------------------.
| yyacceptlab -- YYACCEPT comes here.  |
`-------------------------------------*/
yyacceptlab:
  yyresult = 0;
  goto yyreturn;

/*-----------------------------------.
| yyabortlab -- YYABORT comes here.  |
`-----------------------------------*/
yyabortlab:
  yyresult = 1;
  goto yyreturn;

#ifndef yyoverflow
/*----------------------------------------------.
| yyoverflowlab -- parser overflow comes here.  |
`----------------------------------------------*/
yyoverflowlab:
  yyerror ("parser stack overflow");
  yyresult = 2;
  /* Fall through.  */
#endif

yyreturn:
#ifndef yyoverflow
  if (yyss != yyssa)
    YYSTACK_FREE (yyss);
#endif
  return yyresult;
}





void conf_parse(const char *name)
{
	struct symbol *sym;
	int i;

	zconf_initscan(name);

	sym_init();
	menu_init();
	modules_sym = sym_lookup("MODULES", 0);
	rootmenu.prompt = menu_add_prop(P_MENU, "Buildroot Configuration", NULL, NULL);

	//zconfdebug = 1;
	zconfparse();
	if (zconfnerrs)
		exit(1);
	menu_finalize(&rootmenu);
	for_all_symbols(i, sym) {
                if (!(sym->flags & SYMBOL_CHECKED) && sym_check_deps(sym))
                        printf("\n");
		else
			sym->flags |= SYMBOL_CHECK_DONE;
        }

	sym_change_count = 1;
}

const char *zconf_tokenname(int token)
{
	switch (token) {
	case T_MENU:		return "menu";
	case T_ENDMENU:		return "endmenu";
	case T_CHOICE:		return "choice";
	case T_ENDCHOICE:	return "endchoice";
	case T_IF:		return "if";
	case T_ENDIF:		return "endif";
	}
	return "<token>";
}

static bool zconf_endtoken(int token, int starttoken, int endtoken)
{
	if (token != endtoken) {
		zconfprint("unexpected '%s' within %s block", zconf_tokenname(token), zconf_tokenname(starttoken));
		zconfnerrs++;
		return false;
	}
	if (current_menu->file != current_file) {
		zconfprint("'%s' in different file than '%s'", zconf_tokenname(token), zconf_tokenname(starttoken));
		zconfprint("location of the '%s'", zconf_tokenname(starttoken));
		zconfnerrs++;
		return false;
	}
	return true;
}

static void zconfprint(const char *err, ...)
{
	va_list ap;

	fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno() + 1);
	va_start(ap, err);
	vfprintf(stderr, err, ap);
	va_end(ap);
	fprintf(stderr, "\n");
}

static void zconferror(const char *err)
{
	fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
}

void print_quoted_string(FILE *out, const char *str)
{
	const char *p;
	int len;

	putc('"', out);
	while ((p = strchr(str, '"'))) {
		len = p - str;
		if (len)
			fprintf(out, "%.*s", len, str);
		fputs("\\\"", out);
		str = p + 1;
	}
	fputs(str, out);
	putc('"', out);
}

void print_symbol(FILE *out, struct menu *menu)
{
	struct symbol *sym = menu->sym;
	struct property *prop;

	if (sym_is_choice(sym))
		fprintf(out, "choice\n");
	else
		fprintf(out, "config %s\n", sym->name);
	switch (sym->type) {
	case S_BOOLEAN:
		fputs("  boolean\n", out);
		break;
	case S_TRISTATE:
		fputs("  tristate\n", out);
		break;
	case S_STRING:
		fputs("  string\n", out);
		break;
	case S_INT:
		fputs("  integer\n", out);
		break;
	case S_HEX:
		fputs("  hex\n", out);
		break;
	default:
		fputs("  ???\n", out);
		break;
	}
	for (prop = sym->prop; prop; prop = prop->next) {
		if (prop->menu != menu)
			continue;
		switch (prop->type) {
		case P_PROMPT:
			fputs("  prompt ", out);
			print_quoted_string(out, prop->text);
			if (!expr_is_yes(prop->visible.expr)) {
				fputs(" if ", out);
				expr_fprint(prop->visible.expr, out);
			}
			fputc('\n', out);
			break;
		case P_DEFAULT:
			fputs( "  default ", out);
			expr_fprint(prop->expr, out);
			if (!expr_is_yes(prop->visible.expr)) {
				fputs(" if ", out);
				expr_fprint(prop->visible.expr, out);
			}
			fputc('\n', out);
			break;
		case P_CHOICE:
			fputs("  #choice value\n", out);
			break;
		default:
			fprintf(out, "  unknown prop %d!\n", prop->type);
			break;
		}
	}
	if (sym->help) {
		int len = strlen(sym->help);
		while (sym->help[--len] == '\n')
			sym->help[len] = 0;
		fprintf(out, "  help\n%s\n", sym->help);
	}
	fputc('\n', out);
}

void zconfdump(FILE *out)
{
	struct property *prop;
	struct symbol *sym;
	struct menu *menu;

	menu = rootmenu.list;
	while (menu) {
		if ((sym = menu->sym))
			print_symbol(out, menu);
		else if ((prop = menu->prompt)) {
			switch (prop->type) {
			case P_COMMENT:
				fputs("\ncomment ", out);
				print_quoted_string(out, prop->text);
				fputs("\n", out);
				break;
			case P_MENU:
				fputs("\nmenu ", out);
				print_quoted_string(out, prop->text);
				fputs("\n", out);
				break;
			default:
				;
			}
			if (!expr_is_yes(prop->visible.expr)) {
				fputs("  depends ", out);
				expr_fprint(prop->visible.expr, out);
				fputc('\n', out);
			}
			fputs("\n", out);
		}

		if (menu->list)
			menu = menu->list;
		else if (menu->next)
			menu = menu->next;
		else while ((menu = menu->parent)) {
			if (menu->prompt && menu->prompt->type == P_MENU)
				fputs("\nendmenu\n", out);
			if (menu->next) {
				menu = menu->next;
				break;
			}
		}
	}
}

#include "lex.zconf.c"
#include "util.c"
#include "confdata.c"
#include "expr.c"
#include "symbol.c"
#include "menu.c"