307 lines
		
	
	
		
			8.4 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			307 lines
		
	
	
		
			8.4 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| #include "defs.h"
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| 
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| /*  The definition of yysccsid in the banner should be replaced with	*/
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| /*  a #pragma ident directive if the target C compiler supports		*/
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| /*  #pragma ident directives.						*/
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| /*									*/
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| /*  If the skeleton is changed, the banner should be changed so that	*/
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| /*  the altered version can be easily distinguished from the original.	*/
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| /*									*/
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| /*  The #defines included with the banner are there because they are	*/
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| /*  useful in subsequent code.  The macros #defined in the header or	*/
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| /*  the body either are not useful outside of semantic actions or	*/
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| /*  are conditional.							*/
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| 
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| char *banner[] =
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| {
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|     "#ifndef lint",
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|     "static char yysccsid[] = \"@(#)yaccpar	1.9 (Berkeley) 02/21/93\";",
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|     "#endif",
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|     "#define YYBYACC 1",
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|     "#define YYMAJOR 1",
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|     "#define YYMINOR 9",
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|     "#define yyclearin (yychar=(-1))",
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|     "#define yyerrok (yyerrflag=0)",
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|     "#define YYRECOVERING (yyerrflag!=0)",
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|     0
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| };
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| 
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| 
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| char *tables[] =
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| {
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|     "extern short yylhs[];",
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|     "extern short yylen[];",
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|     "extern short yydefred[];",
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|     "extern short yydgoto[];",
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|     "extern short yysindex[];",
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|     "extern short yyrindex[];",
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|     "extern short yygindex[];",
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|     "extern short yytable[];",
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|     "extern short yycheck[];",
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|     "#if YYDEBUG",
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|     "extern char *yyname[];",
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|     "extern char *yyrule[];",
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|     "#endif",
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|     0
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| };
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| 
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| 
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| char *header[] =
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| {
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|     "#ifdef YYSTACKSIZE",
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|     "#undef YYMAXDEPTH",
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|     "#define YYMAXDEPTH YYSTACKSIZE",
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|     "#else",
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|     "#ifdef YYMAXDEPTH",
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|     "#define YYSTACKSIZE YYMAXDEPTH",
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|     "#else",
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|     "#define YYSTACKSIZE 500",
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|     "#define YYMAXDEPTH 500",
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|     "#endif",
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|     "#endif",
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|     "int yydebug;",
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|     "int yynerrs;",
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|     "int yyerrflag;",
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|     "int yychar;",
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|     "short *yyssp;",
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|     "YYSTYPE *yyvsp;",
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|     "YYSTYPE yyval;",
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|     "YYSTYPE yylval;",
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|     "short yyss[YYSTACKSIZE];",
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|     "YYSTYPE yyvs[YYSTACKSIZE];",
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|     "#define yystacksize YYSTACKSIZE",
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|     0
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| };
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| 
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| 
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| char *body[] =
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| {
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|     "#define YYABORT goto yyabort",
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|     "#define YYREJECT goto yyabort",
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|     "#define YYACCEPT goto yyaccept",
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|     "#define YYERROR goto yyerrlab",
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|     "int",
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|     "yyparse()",
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|     "{",
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|     "    register int yym, yyn, yystate;",
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|     "#if YYDEBUG",
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|     "    register char *yys;",
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|     "    extern char *getenv();",
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|     "",
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|     "    if (yys = getenv(\"YYDEBUG\"))",
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|     "    {",
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|     "        yyn = *yys;",
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|     "        if (yyn >= '0' && yyn <= '9')",
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|     "            yydebug = yyn - '0';",
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|     "    }",
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|     "#endif",
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|     "",
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|     "    yynerrs = 0;",
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|     "    yyerrflag = 0;",
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|     "    yychar = (-1);",
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|     "",
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|     "    yyssp = yyss;",
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|     "    yyvsp = yyvs;",
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|     "    *yyssp = yystate = 0;",
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|     "",
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|     "yyloop:",
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|     "    if (yyn = yydefred[yystate]) goto yyreduce;",
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|     "    if (yychar < 0)",
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|     "    {",
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|     "        if ((yychar = yylex()) < 0) yychar = 0;",
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|     "#if YYDEBUG",
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|     "        if (yydebug)",
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|     "        {",
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|     "            yys = 0;",
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|     "            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];",
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|     "            if (!yys) yys = \"illegal-symbol\";",
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|     "            printf(\"%sdebug: state %d, reading %d (%s)\\n\",",
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|     "                    YYPREFIX, yystate, yychar, yys);",
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|     "        }",
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|     "#endif",
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|     "    }",
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|     "    if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&",
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|     "            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)",
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|     "    {",
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|     "#if YYDEBUG",
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|     "        if (yydebug)",
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|     "            printf(\"%sdebug: state %d, shifting to state %d\\n\",",
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|     "                    YYPREFIX, yystate, yytable[yyn]);",
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|     "#endif",
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|     "        if (yyssp >= yyss + yystacksize - 1)",
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|     "        {",
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|     "            goto yyoverflow;",
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|     "        }",
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|     "        *++yyssp = yystate = yytable[yyn];",
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|     "        *++yyvsp = yylval;",
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|     "        yychar = (-1);",
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|     "        if (yyerrflag > 0)  --yyerrflag;",
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|     "        goto yyloop;",
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|     "    }",
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|     "    if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&",
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|     "            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)",
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|     "    {",
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|     "        yyn = yytable[yyn];",
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|     "        goto yyreduce;",
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|     "    }",
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|     "    if (yyerrflag) goto yyinrecovery;",
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|     "#ifdef lint",
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|     "    goto yynewerror;",
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|     "#endif",
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|     "yynewerror:",
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|     "    yyerror(\"syntax error\");",
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|     "#ifdef lint",
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|     "    goto yyerrlab;",
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|     "#endif",
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|     "yyerrlab:",
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|     "    ++yynerrs;",
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|     "yyinrecovery:",
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|     "    if (yyerrflag < 3)",
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|     "    {",
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|     "        yyerrflag = 3;",
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|     "        for (;;)",
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|     "        {",
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|     "            if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 &&",
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|     "                    yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)",
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|     "            {",
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|     "#if YYDEBUG",
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|     "                if (yydebug)",
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|     "                    printf(\"%sdebug: state %d, error recovery shifting\\",
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|     " to state %d\\n\", YYPREFIX, *yyssp, yytable[yyn]);",
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|     "#endif",
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|     "                if (yyssp >= yyss + yystacksize - 1)",
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|     "                {",
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|     "                    goto yyoverflow;",
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|     "                }",
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|     "                *++yyssp = yystate = yytable[yyn];",
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|     "                *++yyvsp = yylval;",
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|     "                goto yyloop;",
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|     "            }",
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|     "            else",
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|     "            {",
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|     "#if YYDEBUG",
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|     "                if (yydebug)",
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|     "                    printf(\"%sdebug: error recovery discarding state %d\
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| \\n\",",
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|     "                            YYPREFIX, *yyssp);",
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|     "#endif",
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|     "                if (yyssp <= yyss) goto yyabort;",
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|     "                --yyssp;",
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|     "                --yyvsp;",
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|     "            }",
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|     "        }",
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|     "    }",
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|     "    else",
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|     "    {",
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|     "        if (yychar == 0) goto yyabort;",
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|     "#if YYDEBUG",
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|     "        if (yydebug)",
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|     "        {",
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|     "            yys = 0;",
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|     "            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];",
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|     "            if (!yys) yys = \"illegal-symbol\";",
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|     "            printf(\"%sdebug: state %d, error recovery discards token %d\
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|  (%s)\\n\",",
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|     "                    YYPREFIX, yystate, yychar, yys);",
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|     "        }",
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|     "#endif",
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|     "        yychar = (-1);",
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|     "        goto yyloop;",
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|     "    }",
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|     "yyreduce:",
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|     "#if YYDEBUG",
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|     "    if (yydebug)",
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|     "        printf(\"%sdebug: state %d, reducing by rule %d (%s)\\n\",",
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|     "                YYPREFIX, yystate, yyn, yyrule[yyn]);",
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|     "#endif",
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|     "    yym = yylen[yyn];",
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|     "    yyval = yyvsp[1-yym];",
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|     "    switch (yyn)",
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|     "    {",
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|     0
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| };
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| 
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| 
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| char *trailer[] =
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| {
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|     "    }",
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|     "    yyssp -= yym;",
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|     "    yystate = *yyssp;",
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|     "    yyvsp -= yym;",
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|     "    yym = yylhs[yyn];",
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|     "    if (yystate == 0 && yym == 0)",
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|     "    {",
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|     "#if YYDEBUG",
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|     "        if (yydebug)",
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|     "            printf(\"%sdebug: after reduction, shifting from state 0 to\\",
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|     " state %d\\n\", YYPREFIX, YYFINAL);",
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|     "#endif",
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|     "        yystate = YYFINAL;",
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|     "        *++yyssp = YYFINAL;",
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|     "        *++yyvsp = yyval;",
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|     "        if (yychar < 0)",
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|     "        {",
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|     "            if ((yychar = yylex()) < 0) yychar = 0;",
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|     "#if YYDEBUG",
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|     "            if (yydebug)",
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|     "            {",
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|     "                yys = 0;",
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|     "                if (yychar <= YYMAXTOKEN) yys = yyname[yychar];",
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|     "                if (!yys) yys = \"illegal-symbol\";",
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|     "                printf(\"%sdebug: state %d, reading %d (%s)\\n\",",
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|     "                        YYPREFIX, YYFINAL, yychar, yys);",
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|     "            }",
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|     "#endif",
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|     "        }",
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|     "        if (yychar == 0) goto yyaccept;",
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|     "        goto yyloop;",
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|     "    }",
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|     "    if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&",
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|     "            yyn <= YYTABLESIZE && yycheck[yyn] == yystate)",
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|     "        yystate = yytable[yyn];",
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|     "    else",
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|     "        yystate = yydgoto[yym];",
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|     "#if YYDEBUG",
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|     "    if (yydebug)",
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|     "        printf(\"%sdebug: after reduction, shifting from state %d \\",
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|     "to state %d\\n\", YYPREFIX, *yyssp, yystate);",
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|     "#endif",
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|     "    if (yyssp >= yyss + yystacksize - 1)",
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|     "    {",
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|     "        goto yyoverflow;",
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|     "    }",
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|     "    *++yyssp = yystate;",
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|     "    *++yyvsp = yyval;",
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|     "    goto yyloop;",
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|     "yyoverflow:",
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|     "    yyerror(\"yacc stack overflow\");",
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|     "yyabort:",
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|     "    return (1);",
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|     "yyaccept:",
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|     "    return (0);",
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|     "}",
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|     0
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| };
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| 
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| 
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| write_section(section)
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| char *section[];
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| {
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|     register int c;
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|     register int i;
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|     register char *s;
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|     register FILE *f;
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| 
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|     f = code_file;
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|     for (i = 0; s = section[i]; ++i)
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|     {
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| 	++outline;
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| 	while (c = *s)
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| 	{
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| 	    putc(c, f);
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| 	    ++s;
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| 	}
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| 	putc('\n', f);
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|     }
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| }
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