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|
#if defined(__STDC__) || defined(__cplusplus)
#define YYCONST const
#define YYPARAMS(x) x
#define YYDEFUN(name, arglist, args) name(args)
#define YYAND ,
#define YYPTR void *
#else
#define YYCONST
#define YYPARAMS(x) ()
#define YYDEFUN(name, arglist, args) name arglist args;
#define YYAND ;
#define YYPTR char *
#endif
#ifndef lint
YYCONST static char yysccsid[] = "@(#)yaccpar 1.8 (Berkeley +Cygnus.28) 01/20/91";
#endif
#define YYBYACC 1
#ifndef YYDONT_INCLUDE_STDIO
#include <stdio.h>
#endif
//#ifdef __cplusplus TA <tim@ngus.net> stdlib.h applies to C too
#include <stdlib.h> /* for malloc/realloc/free */
//#endif
#line 2 "lburg/gram.y"
#include <stdio.h>
#include "lburg.h"
/*lint -e616 -e527 -e652 -esym(552,yynerrs) -esym(563,yynewstate,yyerrlab) */
static int yylineno = 0;
#line 8 "lburg/gram.y"
typedef union {
int n;
char *string;
Tree tree;
} YYSTYPE;
#line 37 "y.tab.c"
#define TERMINAL 257
#define START 258
#define PPERCENT 259
#define ID 260
#define TEMPLATE 261
#define CODE 262
#define INT 263
#define YYERRCODE 256
static YYCONST short yylhs[] = { -1,
0, 0, 4, 4, 6, 6, 6, 6, 7, 7,
5, 5, 5, 5, 1, 3, 3, 3, 2,
};
static YYCONST short yylen[] = { 2,
3, 1, 0, 2, 3, 3, 1, 2, 0, 4,
0, 7, 2, 3, 1, 1, 4, 6, 1,
};
static YYCONST short yydefred[] = { 3,
0, 0, 0, 9, 0, 11, 7, 4, 8, 0,
15, 0, 0, 0, 5, 6, 0, 13, 0, 0,
14, 0, 10, 0, 0, 0, 0, 0, 19, 0,
17, 0, 12, 0, 18,
};
static YYCONST short yydgoto[] = { 1,
12, 30, 25, 2, 13, 8, 10,
};
static YYCONST short yysindex[] = { 0,
0, -4, -2, 0, -250, 0, 0, 0, 0, -9,
0, 1, -10, -49, 0, 0, 3, 0, -44, -248,
0, -244, 0, -22, -242, -244, -245, -37, 0, 10,
0, -244, 0, -20, 0,
};
static YYCONST short yyrindex[] = { 0,
0, 22, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 23, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, -39, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
};
static YYCONST short yygindex[] = { 0,
11, 0, -23, 0, 0, 0, 0,
};
#define YYTABLESIZE 255
static YYCONST short yytable[] = { 18,
15, 16, 28, 31, 16, 7, 32, 9, 34, 11,
16, 20, 21, 22, 23, 24, 29, 26, 27, 33,
35, 2, 1, 19, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 16, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 17, 0, 0, 0, 11,
14, 3, 4, 5, 6,
};
static YYCONST short yycheck[] = { 10,
10, 41, 26, 41, 44, 10, 44, 10, 32, 260,
10, 61, 10, 58, 263, 260, 262, 40, 261, 10,
41, 0, 0, 13, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, 261, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, 256, -1, -1, -1, 260,
260, 256, 257, 258, 259,
};
#define YYFINAL 1
#ifndef YYDEBUG
#define YYDEBUG 0
#endif
#define YYMAXTOKEN 263
#if YYDEBUG
static YYCONST char *YYCONST yyname[] = {
"end-of-file",0,0,0,0,0,0,0,0,0,"'\\n'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,"'('","')'",0,0,"','",0,0,0,0,0,0,0,0,0,0,0,0,0,"':'",0,0,
"'='",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
"TERMINAL","START","PPERCENT","ID","TEMPLATE","CODE","INT",
};
static YYCONST char *YYCONST yyrule[] = {
"$accept : spec",
"spec : decls PPERCENT rules",
"spec : decls",
"decls :",
"decls : decls decl",
"decl : TERMINAL blist '\\n'",
"decl : START nonterm '\\n'",
"decl : '\\n'",
"decl : error '\\n'",
"blist :",
"blist : blist ID '=' INT",
"rules :",
"rules : rules nonterm ':' tree TEMPLATE cost '\\n'",
"rules : rules '\\n'",
"rules : rules error '\\n'",
"nonterm : ID",
"tree : ID",
"tree : ID '(' tree ')'",
"tree : ID '(' tree ',' tree ')'",
"cost : CODE",
};
#endif
#define YYLEX yylex()
#define YYEMPTY -1
#define yyclearin (yychar=(YYEMPTY))
#define yyerrok (yyerrflag=0)
#ifndef YYINITDEPTH
#define YYINITDEPTH 200
#endif
#ifdef YYSTACKSIZE
#ifndef YYMAXDEPTH
#define YYMAXDEPTH YYSTACKSIZE
#endif
#else
#ifdef YYMAXDEPTH
#define YYSTACKSIZE YYMAXDEPTH
#else
#define YYSTACKSIZE 500
#define YYMAXDEPTH 500
#endif
#endif
#ifndef YYMAXSTACKSIZE
#define YYMAXSTACKSIZE 10000
#endif
int yydebug;
int yynerrs;
int yyerrflag;
int yychar;
YYSTYPE yyval;
YYSTYPE yylval;
static short *yyss;
static YYSTYPE *yyvs;
static int yystacksize;
#define yyfree(x) free(x)
extern int yylex();
static YYPTR
YYDEFUN (yymalloc, (bytes), unsigned bytes)
{
YYPTR ptr = (YYPTR) malloc (bytes);
if (ptr != 0) return (ptr);
yyerror ("yyparse: memory exhausted");
return (0);
}
static YYPTR
YYDEFUN (yyrealloc, (old, bytes), YYPTR old YYAND unsigned bytes)
{
YYPTR ptr = (YYPTR) realloc (old, bytes);
if (ptr != 0) return (ptr);
yyerror ("yyparse: memory exhausted");
return (0);
}
static int
#ifdef __GNUC__
inline
#endif
yygrow ()
{
#if YYDEBUG
int old_stacksize = yystacksize;
#endif
short *new_yyss;
YYSTYPE *new_yyvs;
if (yystacksize == YYMAXSTACKSIZE)
return (1);
yystacksize += (yystacksize + 1 ) / 2;
if (yystacksize > YYMAXSTACKSIZE)
yystacksize = YYMAXSTACKSIZE;
#if YYDEBUG
if (yydebug)
printf("yydebug: growing stack size from %d to %d\n",
old_stacksize, yystacksize);
#endif
new_yyss = (short *) yyrealloc ((char *)yyss, yystacksize * sizeof (short));
if (new_yyss == 0)
return (1);
new_yyvs = (YYSTYPE *) yyrealloc ((char *)yyvs, yystacksize * sizeof (YYSTYPE));
if (new_yyvs == 0)
{
yyfree (new_yyss);
return (1);
}
yyss = new_yyss;
yyvs = new_yyvs;
return (0);
}
#line 60 "lburg/gram.y"
#include <assert.h>
#include <stdarg.h>
#include <ctype.h>
#include <string.h>
#include <limits.h>
int errcnt = 0;
FILE *infp = NULL;
FILE *outfp = NULL;
static char buf[BUFSIZ], *bp = buf;
static int ppercent = 0;
static int code = 0;
static int get(void) {
if (*bp == 0) {
bp = buf;
*bp = 0;
if (fgets(buf, sizeof buf, infp) == NULL)
return EOF;
yylineno++;
while (buf[0] == '%' && buf[1] == '{' && buf[2] == '\n') {
for (;;) {
if (fgets(buf, sizeof buf, infp) == NULL) {
yywarn("unterminated %{...%}\n");
return EOF;
}
yylineno++;
if (strcmp(buf, "%}\n") == 0)
break;
fputs(buf, outfp);
}
if (fgets(buf, sizeof buf, infp) == NULL)
return EOF;
yylineno++;
}
}
return *bp++;
}
void yyerror(char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
if (yylineno > 0)
fprintf(stderr, "line %d: ", yylineno);
vfprintf(stderr, fmt, ap);
if (fmt[strlen(fmt)-1] != '\n')
fprintf(stderr, "\n");
errcnt++;
va_end(ap);
}
int yylex(void) {
int c;
if (code) {
char *p;
bp += strspn(bp, " \t\f");
p = strchr(bp, '\n');
if (p == NULL)
p = strchr(bp, '\n');
while (p > bp && isspace(p[-1]))
p--;
yylval.string = alloc(p - bp + 1);
strncpy(yylval.string, bp, p - bp);
yylval.string[p - bp] = 0;
bp = p;
code--;
return CODE;
}
while ((c = get()) != EOF) {
switch (c) {
case ' ': case '\f': case '\t':
continue;
case '\n':
case '(': case ')': case ',':
case ':': case '=':
return c;
}
if (c == '%' && *bp == '%') {
bp++;
return ppercent++ ? 0 : PPERCENT;
} else if (c == '%' && strncmp(bp, "term", 4) == 0
&& isspace(bp[4])) {
bp += 4;
return TERMINAL;
} else if (c == '%' && strncmp(bp, "start", 5) == 0
&& isspace(bp[5])) {
bp += 5;
return START;
} else if (c == '"') {
char *p = strchr(bp, '"');
if (p == NULL) {
yyerror("missing \" in assembler template\n");
p = strchr(bp, '\n');
if (p == NULL)
p = strchr(bp, '\0');
}
assert(p);
yylval.string = alloc(p - bp + 1);
strncpy(yylval.string, bp, p - bp);
yylval.string[p - bp] = 0;
bp = *p == '"' ? p + 1 : p;
code++;
return TEMPLATE;
} else if (isdigit(c)) {
int n = 0;
do {
int d = c - '0';
if (n > (INT_MAX - d)/10)
yyerror("integer greater than %d\n", INT_MAX);
else
n = 10*n + d;
c = get();
} while (c != EOF && isdigit(c));
bp--;
yylval.n = n;
return INT;
} else if (isalpha(c)) {
char *p = bp - 1;
while (isalpha(*bp) || isdigit(*bp) || *bp == '_')
bp++;
yylval.string = alloc(bp - p + 1);
strncpy(yylval.string, p, bp - p);
yylval.string[bp - p] = 0;
return ID;
} else if (isprint(c))
yyerror("invalid character `%c'\n", c);
else
yyerror("invalid character `\\%03o'\n", (unsigned char)c);
}
return 0;
}
void yywarn(char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
if (yylineno > 0)
fprintf(stderr, "line %d: ", yylineno);
fprintf(stderr, "warning: ");
vfprintf(stderr, fmt, ap);
}
#line 403 "y.tab.c"
#define YYABORT goto yyabort
#define YYACCEPT goto yyaccept
#define YYERROR goto yyerrlab
#if YYDEBUG
#ifdef __cplusplus
extern "C" char *getenv();
#else
extern char *getenv();
#endif
#endif
int
yyparse()
{
register int yym, yyn, yystate;
register YYSTYPE *yyvsp;
register short *yyssp;
short *yysse;
#if YYDEBUG
register YYCONST char *yys;
if (yys = getenv("YYDEBUG"))
{
yyn = *yys;
if (yyn >= '0' && yyn <= '9')
yydebug = yyn - '0';
}
#endif
yynerrs = 0;
yyerrflag = 0;
yychar = (-1);
if (yyss == 0)
{
yyss = (short *) yymalloc (YYSTACKSIZE * sizeof (short));
if (yyss == 0)
goto yyabort;
yyvs = (YYSTYPE *) yymalloc (YYSTACKSIZE * sizeof (YYSTYPE));
if (yyvs == 0)
{
yyfree (yyss);
goto yyabort;
}
yystacksize = YYSTACKSIZE;
}
yysse = yyss + yystacksize - 1;
yyssp = yyss;
yyvsp = yyvs;
*yyssp = yystate = 0;
goto yyloop;
yypush_lex:
yyval = yylval;
yystate = yytable[yyn];
yypush:
if (yyssp >= yysse)
{
int depth = yyssp - yyss;
if (yygrow() != 0)
goto yyoverflow;
yysse = yyss + yystacksize -1;
yyssp = depth + yyss;
yyvsp = depth + yyvs;
}
*++yyssp = yystate;
*++yyvsp = yyval;
yyloop:
if ((yyn = yydefred[yystate])) goto yyreduce;
yyn = yysindex[yystate];
if (yychar < 0)
{
if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
if (yydebug)
{
yys = 0;
if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
if (!yys) yys = "illegal-symbol";
printf("yydebug: state %d, reading %d (%s)\n", yystate,
yychar, yys);
}
#endif
}
if (yyn != 0
&& ((yyn += yychar), ((unsigned)yyn <= (unsigned)YYTABLESIZE))
&& yycheck[yyn] == yychar)
{
#if YYDEBUG
if (yydebug)
printf("yydebug: state %d, shifting to state %d\n",
yystate, yytable[yyn]);
#endif
if (yyerrflag > 0) --yyerrflag;
yychar = (-1);
goto yypush_lex;
}
yyn = yyrindex[yystate];
if (yyn != 0
&& ((yyn += yychar), ((unsigned)yyn <= (unsigned)YYTABLESIZE))
&& yycheck[yyn] == yychar)
{
yyn = yytable[yyn];
goto yyreduce;
}
if (yyerrflag) goto yyinrecovery;
#ifdef lint
goto yynewerror;
yynewerror:
#endif
yyerror("syntax error");
#ifdef lint
goto yyerrlab;
yyerrlab:
#endif
++yynerrs;
yyinrecovery:
if (yyerrflag < 3)
{
yyerrflag = 3;
for (;;)
{
yyn = yysindex[*yyssp];
if (yyn != 0
&& ((yyn += YYERRCODE), ((unsigned)yyn <= (unsigned)YYTABLESIZE))
&& yycheck[yyn] == YYERRCODE)
{
#if YYDEBUG
if (yydebug)
printf("yydebug: state %d, error recovery shifting\
to state %d\n", *yyssp, yytable[yyn]);
#endif
goto yypush_lex;
}
else
{
#if YYDEBUG
if (yydebug)
printf("yydebug: error recovery discarding state %d\n",
*yyssp);
#endif
if (yyssp <= yyss) goto yyabort;
--yyssp;
--yyvsp;
}
}
}
else
{
if (yychar == 0) goto yyabort;
#if YYDEBUG
if (yydebug)
{
yys = 0;
if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
if (!yys) yys = "illegal-symbol";
printf("yydebug: state %d, error recovery discards token %d (%s)\n",
yystate, yychar, yys);
}
#endif
yychar = (-1);
goto yyloop;
}
yyreduce:
#if YYDEBUG
if (yydebug)
printf("yydebug: state %d, reducing by rule %d (%s)\n",
yystate, yyn, yyrule[yyn]);
#endif
yym = yylen[yyn];
yyval = yyvsp[1-yym];
switch (yyn)
{
case 1:
#line 22 "lburg/gram.y"
{ yylineno = 0; }
break;
case 2:
#line 23 "lburg/gram.y"
{ yylineno = 0; }
break;
case 6:
#line 31 "lburg/gram.y"
{
if (nonterm(yyvsp[-1].string)->number != 1)
yyerror("redeclaration of the start symbol\n");
}
break;
case 8:
#line 36 "lburg/gram.y"
{ yyerrok; }
break;
case 10:
#line 40 "lburg/gram.y"
{ term(yyvsp[-2].string, yyvsp[0].n); }
break;
case 12:
#line 44 "lburg/gram.y"
{ rule(yyvsp[-5].string, yyvsp[-3].tree, yyvsp[-2].string, yyvsp[-1].string); }
break;
case 14:
#line 46 "lburg/gram.y"
{ yyerrok; }
break;
case 15:
#line 49 "lburg/gram.y"
{ nonterm(yyval.string = yyvsp[0].string); }
break;
case 16:
#line 52 "lburg/gram.y"
{ yyval.tree = tree(yyvsp[0].string, 0, 0); }
break;
case 17:
#line 53 "lburg/gram.y"
{ yyval.tree = tree(yyvsp[-3].string, yyvsp[-1].tree, 0); }
break;
case 18:
#line 54 "lburg/gram.y"
{ yyval.tree = tree(yyvsp[-5].string, yyvsp[-3].tree, yyvsp[-1].tree); }
break;
case 19:
#line 57 "lburg/gram.y"
{ if (*yyvsp[0].string == 0) yyval.string = "0"; }
break;
#line 630 "y.tab.c"
}
yyssp -= yym;
yyvsp -= yym;
yym = yylhs[yyn];
yystate = *yyssp;
if (yystate == 0 && yym == 0)
{
#if YYDEBUG
if (yydebug)
printf("yydebug: after reduction, shifting from state 0 to\
state %d\n", YYFINAL);
#endif
yystate = YYFINAL;
*++yyssp = YYFINAL;
*++yyvsp = yyval;
if (yychar < 0)
{
if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
if (yydebug)
{
yys = 0;
if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
if (!yys) yys = "illegal-symbol";
printf("yydebug: state %d, reading %d (%s)\n",
YYFINAL, yychar, yys);
}
#endif
}
if (yychar == 0) goto yyaccept;
goto yyloop;
}
yyn = yygindex[yym];
if (yyn != 0
&& ((yyn += yystate), ((unsigned)yyn <= (unsigned)YYTABLESIZE))
&& yycheck[yyn] == yystate)
yystate = yytable[yyn];
else
yystate = yydgoto[yym];
#if YYDEBUG
if (yydebug)
printf("yydebug: after reduction, shifting from state %d \
to state %d\n", *yyssp, yystate);
#endif
goto yypush;
yyoverflow:
yyerror("yacc stack overflow");
yyabort:
return (1);
yyaccept:
return (0);
}
|
