static enum token
t_lex(char *s, struct exists_data *ed)
{
struct t_op const *op;
ed->no_op = 0;
if (s == NULL) {
ed->t_wp_op = NULL;
return EOI;
}
if ((op = findop(s)) != NULL) {
if (!((op->op_type == UNOP && isoperand(ed)) ||
(op->op_num == LPAREN && *(ed->t_wp+1) == 0))) {
ed->t_wp_op = op;
return (enum token)op->op_num;
}
}
if (strlen(*(ed->t_wp)) > 0 && !op && !ed->t_wp_op) {
ed->t_wp_op = findop("-N");
ed->no_op = 1;
return (enum token)ed->t_wp_op->op_num;
} else {
ed->t_wp_op = NULL;
}
return OPERAND;
}
static int
isoperand(void)
{
struct t_op const *op;
char *s, *t;
if ((s = *(t_wp+1)) == 0)
return 1;
if ((t = *(t_wp+2)) == 0)
return 0;
if ((op = findop(s)) != NULL)
return op->op_type == BINOP && (t[0] != ')' || t[1] != '\0');
return 0;
}
static int
isoperand(struct exists_data *ed)
{
struct t_op const *op;
char *s, *t;
if ((s = *((ed->t_wp)+1)) == 0)
return 1;
if ((t = *((ed->t_wp)+2)) == 0)
return 0;
if ((op = findop(s)) != NULL)
return op->op_type == BINOP && (t[0] != ')' || t[1] != '\0');
return 0;
}
static enum token
t_lex(char *s)
{
struct t_op const *op;
if (s == NULL) {
t_wp_op = NULL;
return EOI;
}
if ((op = findop(s)) != NULL) {
if (!((op->op_type == UNOP && isoperand()) ||
(op->op_num == LPAREN && *(t_wp+1) == 0))) {
t_wp_op = op;
return op->op_num;
}
}
t_wp_op = NULL;
return OPERAND;
}
/* here's where mawk really becomes awka */
void
awka_insertop(int op, char *cval, char *carg, int minst, char *file, int line)
{
char *val = NULL, *arg = NULL;
if (cval)
{
val = (char *) malloc((strlen(cval)*2)+10);
strcpy(val, cval);
}
if (carg)
{
arg = (char *) malloc((strlen(carg)*2)+10);
strcpy(arg, carg);
}
if (prog_no == prog_allc)
{
prog_allc += 40;
progcode = (struct pc *) realloc(progcode, prog_allc * sizeof(struct pc));
}
if (op == _BUILTIN)
{
if (!(op = findop(val)))
return;
free(val); val = NULL;
}
progcode[prog_no].op = op;
progcode[prog_no].inst = prog_no;
progcode[prog_no].minst = minst;
progcode[prog_no].line = line;
progcode[prog_no].file = file;
progcode[prog_no].val = val;
progcode[prog_no].arg = arg;
progcode[prog_no].endloop = 0;
progcode[prog_no].foreverloop = 0;
progcode[prog_no].doloop = FALSE;
progcode[prog_no].label = FALSE;
progcode[prog_no].jumpfrom = progcode[prog_no].jumpto = -1;
progcode[prog_no].ljumpfrom = -1;
progcode[prog_no].prevcat = progcode[prog_no].prev2 = -1;
progcode[prog_no].context = _NUL;
progcode[prog_no].code = NULL;
progcode[prog_no].code0 = NULL;
progcode[prog_no].code_used = progcode[prog_no].code_allc = 0;
progcode[prog_no].code0_used = progcode[prog_no].code0_allc = 0;
progcode[prog_no].done = FALSE;
progcode[prog_no].printed = FALSE;
progcode[prog_no].earliest = -1;
progcode[prog_no].ftype = code[op-1].ftype;
if (op >= CODE_MIN && op <= BI_MAX)
{
progcode[prog_no].func = code[op-1].func;
progcode[prog_no].pop = code[op-1].pop;
progcode[prog_no].varidx = code[op-1].varidx;
}
else
{
progcode[prog_no].func = NULL;
progcode[prog_no].pop = FALSE;
progcode[prog_no].varidx = -1;
}
if (val && op == _PUSHS)
{
progcode[prog_no].val = fixbackslashes(progcode[prog_no].val, op);
/* double_backslashes(progcode[prog_no].val); */
}
if (arg)
{
if (!strncmp(val, "repl", 4))
{
progcode[prog_no].arg = fixbackslashes(progcode[prog_no].arg, _PUSHS);
/* double_backslashes(progcode[prog_no].arg); */
}
else
progcode[prog_no].arg = fixbackslashes(progcode[prog_no].arg, op);
}
prog_no++;
}
int yylex(void)
{
int scanstate;
char *thistokstart = NULL;
register char nextchar;
int charset;
int consaccum = 0, consbase = 0;
if (!fryybuf || fryy_bs < 4096)
{
free(fryybuf);
fryy_bs = 4096;
fryybuf = (char *)calloc(fryy_bs, 1);
frainptr = fryybuf;
}
if(currtok >= intokcnt)
{
again:
switch(nextreadact)
{
case Nra_new: /* access next file */
emit_entering_file(infilestk[++currfstk].fnm);
yyin = infilestk[currfstk].fpt;
nextreadact = Nra_normal;
case Nra_normal:
if(frareadrec())
{
/* EOF */;
return 0;
}
break;
case Nra_end: /* pop file and access previous */
if(currfstk > 0)
{
fclose(yyin);
yyin = infilestk[--currfstk].fpt;
emit_exiting_file(infilestk[currfstk].fnm);
if(frareadrec())
{
/* EOF */;
return 0;
}
else
{
nextreadact = Nra_normal;
}
}
else
{
/* EOF */;
return 0;
}
break;
}
if(listflag) emit_listed_line(fryybuf);
else emit_unlisted_line();
if (fraignore)
goto again; /* don't scan it! */
/* resize our parsing buffers if the incoming line buffer got huge */
if (fryy_bs + 2 > sq_size)
{
free(scanqueue );
free(tempstrpool);
scanqueue = (sq_type *)malloc((fryy_bs + 2) * sizeof(sq_type));
tempstrpool = (char *)malloc((fryy_bs + 2) * 2);
sq_size = fryy_bs + 2;
}
/* Scan a line */
frainptr = fryybuf;
currtok = intokcnt = 0;
nexttokload = & scanqueue[0];
tptrstr = &tempstrpool[0];
scanstate = 0;
whichsym = Symopcode;
labelarray = LAno;
while( (nextchar = *frainptr++) != '\0' )
{
charset = chartrantab[nextchar & 0x7f];
do {
thisact = & characttab [scanstate][charset];
#if DEBUG
if(isprint(nextchar))
printf("%c ", nextchar);
else
printf("0x%2.2X ", nextchar);
printf("%-18s %-33s %-11s %2.2d\n",
statelab[scanstate],
actlab[thisact->action],
thisact->contin ? "Continue" : "Swallow",
thisact->nextstate);
#endif
switch(thisact->action)
{
case 0: /* skip/no op */
break;
case 1: /* load EOL token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = EOL;
nexttokload->errtype = Yetunprint;
nexttokload++;
intokcnt++;
break;
case 2: /* start string */
thistokstart = tptrstr;
nexttokload->textstrt = frainptr;
break;
case 3: /* process label */
{
struct symel *tempsym;
labelarray = LAmaybe;
*tptrstr++ = '\0';
tempsym = symbentry(thistokstart, SYMBOL);
if((tempsym->seg) != SSG_RESV)
{
nexttokload->tokv = LABEL;
nexttokload->errtype = Yetsymbol;
nexttokload->lvalv.symb = tempsym;
}
else
{
nexttokload->tokv = tempsym->tok;
nexttokload->errtype = Yetreserved;
nexttokload->lvalv.intv = tempsym->value;
}
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
}
break;
case 4: /* save string char */
*tptrstr++ = nextchar;
break;
case 5: /* load single char token */
if (labelarray == LAmaybe && nextchar == '['
&& whichsym == Symopcode)
{
labelarray = LAyes;
whichsym = Symsym;
}
if (labelarray == LAyes && nextchar == ']')
{
labelarray = LAno;
whichsym = Symopcode;
}
nexttokload->lvalv.longv = 0;
nexttokload->tokv = nextchar;
nexttokload->errtype = Yetprint;
nexttokload++;
intokcnt++;
break;
case 6: /* load EQ token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = KEOP_EQ;
nexttokload->errtype = Yetunprint;
nexttokload++;
intokcnt++;
break;
case 7: /* process symbol */
{
register struct symel *symp;
register char *ytp;
int tempov;
*tptrstr++ = '\0';
if(whichsym == Symopcode)
{
for(ytp = thistokstart; *ytp != '\0';
ytp++)
{
if(islower(*ytp))
{
*ytp = toupper(*ytp);
}
}
nexttokload->lvalv.intv
= tempov = findop(thistokstart);
nexttokload->tokv =
optab[tempov].token;
nexttokload->errtype = Yetopcode;
whichsym = Symsym;
}
else
{
symp = symbentry(thistokstart,SYMBOL);
if(symp->seg != SSG_RESV)
{
nexttokload->lvalv.symb = symp;
nexttokload->errtype = Yetsymbol;
}
else
{
nexttokload->lvalv.intv
= symp->value;
nexttokload->errtype = Yetreserved;
}
nexttokload->tokv = symp->tok;
}
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
}
break;
case 8: /* load $ token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = '$';
nexttokload->errtype = Yetprint;
nexttokload++;
intokcnt++;
break;
case 9: /* setup for $hex */
consbase = 16;
consaccum = 0;
break;
case 10: /* accumulate 0-9 constant */
consaccum = (consaccum * consbase)
+ (nextchar - '0');
break;
case 11: /* accumulate A-F constant */
consaccum = (consaccum * consbase)
+ (nextchar - 'A' + 10);
break;
case 12: /* accumulate a-f constant */
consaccum = (consaccum * consbase)
+ (nextchar - 'a' + 10);
break;
case 13: /* load Constant token */
nexttokload->lvalv.longv =
consaccum;
nexttokload->tokv = CONSTANT;
nexttokload->errtype = Yetconstant;
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
break;
case 14: /* load @ token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = '@';
nexttokload->errtype = Yetprint;
nexttokload++;
intokcnt++;
break;
case 15: /* setup for @octal */
consbase = 8;
consaccum = 0;
break;
case 16: /* setup for %binary */
consbase = 2;
consaccum = 0;
break;
case 17: /* load % token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = '%';
nexttokload->errtype = Yetprint;
nexttokload++;
intokcnt++;
break;
case 18: /* load String token (double quoted) */
*tptrstr++ = '\0';
nexttokload->lvalv.strng =
thistokstart;
nexttokload->tokv = STRING;
nexttokload->errtype = Yetstring;
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
break;
case 35: /* load String token (single quoted) */
*tptrstr++ = '\0';
if (tptrstr == thistokstart + 2)
{
nexttokload->lvalv.longv = *thistokstart & 0xFF;
nexttokload->tokv = QCHAR;
nexttokload->errtype = Yetconstant;
} else
{
nexttokload->lvalv.strng =
thistokstart;
nexttokload->tokv = STRING;
nexttokload->errtype = Yetstring;
}
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
break;
case 19: /* load GE token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = KEOP_GE;
nexttokload->errtype = Yetunprint;
nexttokload++;
intokcnt++;
break;
case 20: /* load GT token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = KEOP_GT;
nexttokload->errtype = Yetunprint;
nexttokload++;
intokcnt++;
break;
case 21: /* load LE token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = KEOP_LE;
nexttokload->errtype = Yetunprint;
nexttokload++;
intokcnt++;
break;
case 22: /* load NE token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = KEOP_NE;
nexttokload->errtype = Yetunprint;
nexttokload++;
intokcnt++;
break;
case 23: /* load LT token */
nexttokload->lvalv.longv = 0;
nexttokload->tokv = KEOP_LT;
nexttokload->errtype = Yetunprint;
nexttokload++;
intokcnt++;
break;
case 24: /* save numeric char 0-9 */
*tptrstr++ = nextchar - '0';
break;
case 25: /* save numeric char A-F */
*tptrstr++ = nextchar - 'A' + 10;
break;
case 26: /* save numeric char a-f */
*tptrstr++ = nextchar - 'a' + 10;
break;
case 27: /* convert numeric string base 2 */
{
consaccum = 0;
while(thistokstart < tptrstr)
{
consaccum = (consaccum * 2) + *thistokstart++;
}
nexttokload->lvalv.longv = consaccum;
nexttokload->tokv = CONSTANT;
nexttokload->errtype = Yetconstant;
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
}
break;
case 28: /* convert numeric string base 8 */
{
consaccum = 0;
while(thistokstart < tptrstr)
{
consaccum = (consaccum * 8) + *thistokstart++;
}
nexttokload->lvalv.longv = consaccum;
nexttokload->tokv = CONSTANT;
nexttokload->errtype = Yetconstant;
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
}
break;
case 29: /* convert numeric string base 10 */
{
consaccum = 0;
while(thistokstart < tptrstr)
{
consaccum = (consaccum * 10) + *thistokstart++;
}
nexttokload->lvalv.longv = consaccum;
nexttokload->tokv = CONSTANT;
nexttokload->errtype = Yetconstant;
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
}
break;
case 30: /* convert numeric string base 16 */
{
consaccum = 0;
while(thistokstart < tptrstr)
{
consaccum = (consaccum * 16) + *thistokstart++;
}
nexttokload->lvalv.longv = consaccum;
nexttokload->tokv = CONSTANT;
nexttokload->errtype = Yetconstant;
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
}
break;
case 31: /* save numeric 0xb */
*tptrstr++ = 0xb;
break;
case 32: /* save numeric 0xd */
*tptrstr++ = 0xd;
break;
case 33: /* set text start */
nexttokload->textstrt = frainptr;
break;
case 34: /* token choke */
nexttokload->lvalv.longv = 0L;
nexttokload->tokv = KTK_invalid;
nexttokload->errtype = Yetinvalid;
nexttokload->textend = frainptr;
nexttokload++;
intokcnt++;
break;
}
scanstate = thisact->nextstate;
} while( thisact->contin);
}
if(intokcnt <= 0)
{ /* no tokens in line (comment or whitespace overlength) */
scanqueue[0].tokv = EOL;
scanqueue[0].errtype = Yetunprint;
scanqueue[0].lvalv.longv = 0;
intokcnt = 1;
}
if(scanstate != 0)
{ /* no EOL */
fraerror("Overlength/Unterminated Line");
}
}
lasttokfetch = &scanqueue[currtok++];
yylval = lasttokfetch->lvalv;
return lasttokfetch->tokv;
}
char *
demangle(char *c)
{
volatile int i = 0;
extern jmp_buf jbuf;
static mutex_t mlock = DEFAULTMUTEX;
NOTE(MUTEX_PROTECTS_DATA(mlock, String))
(void) mutex_lock(&mlock);
if (setjmp(jbuf)) {
(void) mutex_unlock(&mlock);
return (0);
}
hold = c;
s = mk_String(s);
s = set_String(s, MSG_ORIG(MSG_STR_EMPTY));
if (c == 0 || *c == 0) {
c = hold;
(void) mutex_unlock(&mlock);
return (c);
}
if (strncmp(c, MSG_ORIG(MSG_STR_DBLUNDBAR), 2) != 0) {
/*
* If a name does not begin with a __
* but it does contain one, it is either
* a member or an overloaded function.
*/
while (c[i] && strncmp(c+i, MSG_ORIG(MSG_STR_DBLUNDBAR), 2))
i++;
if (c[i]) {
/* Advance to first non-underscore */
while (c[i+2] == '_')
i++;
}
if (strncmp(c+i, MSG_ORIG(MSG_STR_DBLUNDBAR), 2) == 0) {
/* Copy the simple name */
s = napp_String(s, c, i);
/* Process the signature */
c = second(c+i);
(void) mutex_unlock(&mlock);
return (c);
} else {
c = hold;
(void) mutex_unlock(&mlock);
return (c);
}
} else {
const char *x;
int oplen;
c += 2;
/*
* For automatic variables, or internal static
* variables, a __(number) is prepended to the
* name. If this is encountered, strip this off
* and return.
*/
if (isdigit(*c)) {
while (isdigit(*c))
c++;
(void) mutex_unlock(&mlock);
return (c);
}
/*
* Handle operator functions -- this
* automatically calls second, since
* all operator functions are overloaded.
*/
if (x = findop(c, &oplen)) {
s = app_String(s, MSG_ORIG(MSG_STR_OPERATOR_1));
s = app_String(s, x);
c += oplen;
c = second(c);
(void) mutex_unlock(&mlock);
return (c);
}
/*
* Operator cast does not fit the mould
* of the other operators. Its type name
* is encoded. The cast function must
* take a void as an argument.
*/
if (strncmp(c, MSG_ORIG(MSG_STR_OP), 2) == 0) {
int r;
s = app_String(s, MSG_ORIG(MSG_STR_OPERATOR_2));
c += 2;
r = demangle_doarg(&s, c);
if (r < 0) {
c = hold;
(void) mutex_unlock(&mlock);
return (c);
}
c += r;
c = second(c);
(void) mutex_unlock(&mlock);
return (c);
}
/*
* Constructors and Destructors are also
* a special case of operator name. Note
* that the destructor, while overloaded,
* must always take the same arguments --
* none.
*/
if ((*c == 'c' || *c == 'd') &&
strncmp(c+1, MSG_ORIG(MSG_STR_TDBLUNDBAR), 3) == 0) {
int n;
char *c2 = c+2;
char cx = c[0];
c += 4;
n = getint(&c);
if (n == 0) {
c = hold;
(void) mutex_unlock(&mlock);
return (c);
}
s = napp_String(s, c, n);
if (cx == 'd')
s = prep_String(MSG_ORIG(MSG_STR_TILDE), s);
c = second(c2);
(void) mutex_unlock(&mlock);
return (c);
}
c = hold;
(void) mutex_unlock(&mlock);
return (c);
}
}
