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awk: simplify tests for operation class
Usually, an operation class has only one possible value of "info" word. In this case, just compare the entire info word, do not bother to mask OPCLSMASK bits. (Example where this is not the case: OC_REPLACE for "<op>=") function old new delta mk_splitter 106 100 -6 chain_group 616 610 -6 nextarg 40 32 -8 exec_builtin 1157 1149 -8 as_regex 111 103 -8 awk_split 553 543 -10 parse_expr 948 936 -12 awk_getline 656 642 -14 evaluate 3387 3343 -44 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/9 up/down: 0/-116) Total: -116 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
cb042b0582
commit
08ca313d7e
@ -432,7 +432,8 @@ static const char tokenlist[] ALIGN1 =
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static const uint32_t tokeninfo[] ALIGN4 = {
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0,
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0,
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OC_REGEXP,
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#define TI_REGEXP OC_REGEXP
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TI_REGEXP,
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xS|'a', xS|'w', xS|'|',
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OC_UNARY|xV|P(9)|'p', OC_UNARY|xV|P(9)|'m',
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#define TI_PREINC (OC_UNARY|xV|P(9)|'P')
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@ -443,12 +444,17 @@ static const uint32_t tokeninfo[] ALIGN4 = {
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OC_BINARY|NV|P(29)|'+', OC_BINARY|NV|P(29)|'-', OC_REPLACE|NV|P(74)|'&', OC_BINARY|NV|P(15)|'&',
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OC_BINARY|NV|P(25)|'/', OC_BINARY|NV|P(25)|'%', OC_BINARY|NV|P(15)|'&', OC_BINARY|NV|P(25)|'*',
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OC_COMPARE|VV|P(39)|4, OC_COMPARE|VV|P(39)|3, OC_COMPARE|VV|P(39)|0, OC_COMPARE|VV|P(39)|1,
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#define TI_LESS (OC_COMPARE|VV|P(39)|2)
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#define TI_LESS (OC_COMPARE|VV|P(39)|2)
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TI_LESS, OC_MATCH|Sx|P(45)|'!', OC_MATCH|Sx|P(45)|'~', OC_LAND|Vx|P(55),
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OC_LOR|Vx|P(59), OC_TERNARY|Vx|P(64)|'?', OC_COLON|xx|P(67)|':',
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OC_IN|SV|P(49), /* TC_IN */
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OC_COMMA|SS|P(80),
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OC_PGETLINE|SV|P(37),
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#define TI_TERNARY (OC_TERNARY|Vx|P(64)|'?')
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#define TI_COLON (OC_COLON|xx|P(67)|':')
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OC_LOR|Vx|P(59), TI_TERNARY, TI_COLON,
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#define TI_IN (OC_IN|SV|P(49))
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TI_IN,
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#define TI_COMMA (OC_COMMA|SS|P(80))
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TI_COMMA,
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#define TI_PGETLINE (OC_PGETLINE|SV|P(37))
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TI_PGETLINE,
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OC_UNARY|xV|P(19)|'+', OC_UNARY|xV|P(19)|'-', OC_UNARY|xV|P(19)|'!',
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0, /* ] */
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0,
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@ -456,7 +462,8 @@ static const uint32_t tokeninfo[] ALIGN4 = {
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0,
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0, /* \n */
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ST_IF, ST_DO, ST_FOR, OC_BREAK,
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OC_CONTINUE, OC_DELETE|Rx, OC_PRINT,
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#define TI_PRINT OC_PRINT
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OC_CONTINUE, OC_DELETE|Rx, TI_PRINT,
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OC_PRINTF, OC_NEXT, OC_NEXTFILE,
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OC_RETURN|Vx, OC_EXIT|Nx,
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ST_WHILE,
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@ -465,8 +472,8 @@ static const uint32_t tokeninfo[] ALIGN4 = {
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// Highest byte bit pattern: nn s3s2s1 v3v2v1
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// nn - min. number of args, sN - resolve Nth arg to string, vN - resolve to var
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// OC_F's are builtins with zero or one argument.
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// |Rx| enforces that arg is present for: system, close, cos, sin, exp, int, log, sqrt.
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// Check for no args is present in builtins' code (not in this table): rand, systime.
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// |Rx| enforces that arg is present for: system, close, cos, sin, exp, int, log, sqrt
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// Check for no args is present in builtins' code (not in this table): rand, systime
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// Have one _optional_ arg: fflush, srand, length
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#define OC_B OC_BUILTIN
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#define OC_F OC_FBLTIN
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@ -1310,7 +1317,7 @@ static node *new_node(uint32_t info)
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static void mk_re_node(const char *s, node *n, regex_t *re)
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{
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n->info = OC_REGEXP;
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n->info = TI_REGEXP;
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n->l.re = re;
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n->r.ire = re + 1;
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xregcomp(re, s, REG_EXTENDED);
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@ -1360,12 +1367,13 @@ static node *parse_expr(uint32_t term_tc)
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* previous operators with higher priority */
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vn = cn;
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while (((t_info & PRIMASK) > (vn->a.n->info & PRIMASK2))
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|| ((t_info == vn->info) && ((t_info & OPCLSMASK) == OC_COLON))
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|| ((t_info == vn->info) && t_info == TI_COLON)
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) {
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vn = vn->a.n;
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if (!vn->a.n) syntax_error(EMSG_UNEXP_TOKEN);
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}
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if ((t_info & OPCLSMASK) == OC_TERNARY)
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if (t_info == TI_TERNARY)
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//TODO: why?
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t_info += P(6);
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cn = vn->a.n->r.n = new_node(t_info);
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cn->a.n = vn->a.n;
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@ -1378,7 +1386,7 @@ static node *parse_expr(uint32_t term_tc)
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// awk 'BEGIN { length("qwe") = 1 }'
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// awk 'BEGIN { (1+1) += 3 }'
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expected_tc = TS_OPERAND | TS_UOPPRE | TC_REGEXP;
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if ((t_info & OPCLSMASK) == OC_PGETLINE) {
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if (t_info == TI_PGETLINE) {
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/* it's a pipe */
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next_token(TC_GETLINE);
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/* give maximum priority to this pipe */
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@ -1630,7 +1638,7 @@ static void chain_group(void)
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next_token(TC_LPAREN);
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n2 = parse_expr(TC_SEMICOL | TC_RPAREN);
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if (t_tclass & TC_RPAREN) { /* for-in */
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if (!n2 || (n2->info & OPCLSMASK) != OC_IN)
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if (!n2 || n2->info != TI_IN)
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syntax_error(EMSG_UNEXP_TOKEN);
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n = chain_node(OC_WALKINIT | VV);
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n->l.n = n2->l.n;
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@ -1834,7 +1842,7 @@ static node *mk_splitter(const char *s, tsplitter *spl)
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re = &spl->re[0];
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ire = &spl->re[1];
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n = &spl->n;
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if ((n->info & OPCLSMASK) == OC_REGEXP) {
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if (n->info == TI_REGEXP) {
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regfree(re);
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regfree(ire); // TODO: nuke ire, use re+1?
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}
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@ -1858,7 +1866,7 @@ static regex_t *as_regex(node *op, regex_t *preg)
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int cflags;
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const char *s;
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if ((op->info & OPCLSMASK) == OC_REGEXP) {
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if (op->info == TI_REGEXP) {
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return icase ? op->r.ire : op->l.re;
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}
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@ -1968,7 +1976,7 @@ static int awk_split(const char *s, node *spl, char **slist)
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c[2] = '\n';
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n = 0;
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if ((spl->info & OPCLSMASK) == OC_REGEXP) { /* regex split */
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if (spl->info == TI_REGEXP) { /* regex split */
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if (!*s)
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return n; /* "": zero fields */
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n++; /* at least one field will be there */
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@ -2135,7 +2143,7 @@ static node *nextarg(node **pn)
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node *n;
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n = *pn;
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if (n && (n->info & OPCLSMASK) == OC_COMMA) {
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if (n && n->info == TI_COMMA) {
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*pn = n->r.n;
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n = n->l.n;
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} else {
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@ -2229,7 +2237,7 @@ static int awk_getline(rstream *rsm, var *v)
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so = eo = p;
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r = 1;
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if (p > 0) {
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if ((rsplitter.n.info & OPCLSMASK) == OC_REGEXP) {
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if (rsplitter.n.info == TI_REGEXP) {
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if (regexec(icase ? rsplitter.n.r.ire : rsplitter.n.l.re,
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b, 1, pmatch, 0) == 0) {
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so = pmatch[0].rm_so;
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@ -2575,8 +2583,8 @@ static NOINLINE var *exec_builtin(node *op, var *res)
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char *s, *s1;
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if (nargs > 2) {
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spl = (an[2]->info & OPCLSMASK) == OC_REGEXP ?
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an[2] : mk_splitter(getvar_s(evaluate(an[2], TMPVAR2)), &tspl);
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spl = (an[2]->info == TI_REGEXP) ? an[2]
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: mk_splitter(getvar_s(evaluate(an[2], TMPVAR2)), &tspl);
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} else {
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spl = &fsplitter.n;
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}
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@ -2860,7 +2868,7 @@ static var *evaluate(node *op, var *res)
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/* test pattern */
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case XC( OC_TEST ):
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debug_printf_eval("TEST\n");
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if ((op1->info & OPCLSMASK) == OC_COMMA) {
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if (op1->info == TI_COMMA) {
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/* it's range pattern */
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if ((opinfo & OF_CHECKED) || ptest(op1->l.n)) {
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op->info |= OF_CHECKED;
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@ -2921,7 +2929,7 @@ static var *evaluate(node *op, var *res)
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F = rsm->F;
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}
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if ((opinfo & OPCLSMASK) == OC_PRINT) {
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if (opinfo == TI_PRINT) {
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if (!op1) {
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fputs(getvar_s(intvar[F0]), F);
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} else {
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@ -2940,7 +2948,7 @@ static var *evaluate(node *op, var *res)
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}
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}
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fputs(getvar_s(intvar[ORS]), F);
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} else { /* OC_PRINTF */
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} else { /* PRINTF */
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char *s = awk_printf(op1, &len);
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#if ENABLE_FEATURE_AWK_GNU_EXTENSIONS
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fwrite(s, len, 1, F);
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@ -3064,7 +3072,7 @@ static var *evaluate(node *op, var *res)
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case XC( OC_TERNARY ):
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debug_printf_eval("TERNARY\n");
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if ((op->r.n->info & OPCLSMASK) != OC_COLON)
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if (op->r.n->info != TI_COLON)
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syntax_error(EMSG_POSSIBLE_ERROR);
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res = evaluate(istrue(L.v) ? op->r.n->l.n : op->r.n->r.n, res);
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break;
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@ -3122,7 +3130,7 @@ static var *evaluate(node *op, var *res)
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if (op1) {
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rsm = newfile(L.s);
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if (!rsm->F) {
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if ((opinfo & OPCLSMASK) == OC_PGETLINE) {
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if (opinfo == TI_PGETLINE) {
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rsm->F = popen(L.s, "r");
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rsm->is_pipe = TRUE;
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} else {
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@ -3158,7 +3166,7 @@ static var *evaluate(node *op, var *res)
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double R_d = R_d; /* for compiler */
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debug_printf_eval("FBLTIN\n");
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if (op1 && (op1->info & OPCLSMASK) == OC_COMMA)
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if (op1 && op1->info == TI_COMMA)
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/* Simple builtins take one arg maximum */
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syntax_error("Too many arguments");
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@ -3358,7 +3366,7 @@ static var *evaluate(node *op, var *res)
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case XC( OC_COMMA ): {
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const char *sep = "";
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debug_printf_eval("COMMA\n");
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if ((opinfo & OPCLSMASK) == OC_COMMA)
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if (opinfo == TI_COMMA)
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sep = getvar_s(intvar[SUBSEP]);
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setvar_p(res, xasprintf("%s%s%s", L.s, sep, R.s));
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break;
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