#include "toke_on_crack.c.inc"
+static void free_ptr_op(void *vp) {
+ OP **pp = vp;
+ op_free(*pp);
+ Safefree(pp);
+}
+
+#define sv_eq_pvs(SV, S) sv_eq_pvn(SV, "" S "", sizeof (S) - 1)
+
+static int sv_eq_pvn(SV *sv, const char *p, STRLEN n) {
+ STRLEN sv_len;
+ const char *sv_p = SvPV(sv, sv_len);
+ return
+ sv_len == n &&
+ memcmp(sv_p, p, n) == 0
+ ;
+}
+
+
+#include "padop_on_crack.c.inc"
+
+
+#if 0
+static PADOFFSET pad_add_my_sv(SV *name) {
+ PADOFFSET offset;
+ SV *namesv, *myvar;
+ char *p;
+ STRLEN len;
+
+ p = SvPV(name, len);
+ myvar = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, 1);
+ offset = AvFILLp(PL_comppad);
+ SvPADMY_on(myvar);
+ if (*p == '@') {
+ SvUPGRADE(myvar, SVt_PVAV);
+ } else if (*p == '%') {
+ SvUPGRADE(myvar, SVt_PVHV);
+ }
+ PL_curpad = AvARRAY(PL_comppad);
+ namesv = newSV_type(SVt_PVMG);
+ sv_setpvn(namesv, p, len);
+ COP_SEQ_RANGE_LOW_set(namesv, PL_cop_seqmax);
+ COP_SEQ_RANGE_HIGH_set(namesv, PERL_PADSEQ_INTRO);
+ PL_cop_seqmax++;
+ av_store(PL_comppad_name, offset, namesv);
+ return offset;
+}
+#endif
+
+enum {
+ MY_ATTR_LVALUE = 0x01,
+ MY_ATTR_METHOD = 0x02,
+ MY_ATTR_SPECIAL = 0x04
+};
+
static int parse_fun(pTHX_ OP **pop, const char *keyword_ptr, STRLEN keyword_len, const Spec *spec) {
- SV *gen, *declarator, *params, *sv;
- int saw_name, saw_colon;
+ SV *declarator;
+ I32 floor_ix;
+ SV *saw_name;
+ AV *params;
+ SV *proto;
+ OP **attrs_sentinel, *body;
+ unsigned builtin_attrs;
+ int saw_colon;
STRLEN len;
char *s;
I32 c;
- gen = sv_2mortal(newSVpvs("sub"));
declarator = sv_2mortal(newSVpvn(keyword_ptr, keyword_len));
- params = sv_2mortal(newSVpvs(""));
lex_read_space(0);
+ builtin_attrs = 0;
+
/* function name */
- saw_name = 0;
+ saw_name = NULL;
s = PL_parser->bufptr;
if (spec->name != FLAG_NAME_PROHIBITED && (len = S_scan_word(aTHX_ s, TRUE))) {
- sv_catpvs(gen, " ");
- sv_catpvn(gen, s, len);
+ saw_name = sv_2mortal(newSVpvn_flags(s, len, PARSING_UTF ? SVf_UTF8 : 0));
+
+ if (PL_parser->expect != XSTATE) {
+ /* bail out early so we don't predeclare $saw_name */
+ croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
+ }
+
sv_catpvs(declarator, " ");
- sv_catpvn(declarator, s, len);
+ sv_catsv(declarator, saw_name);
+
+ if (
+ sv_eq_pvs(saw_name, "BEGIN") ||
+ sv_eq_pvs(saw_name, "END") ||
+ sv_eq_pvs(saw_name, "INIT") ||
+ sv_eq_pvs(saw_name, "CHECK") ||
+ sv_eq_pvs(saw_name, "UNITCHECK")
+ ) {
+ builtin_attrs |= MY_ATTR_SPECIAL;
+ }
+
lex_read_to(s + len);
lex_read_space(0);
- saw_name = 1;
} else if (spec->name == FLAG_NAME_REQUIRED) {
croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - s), s);
} else {
sv_catpvs(declarator, " (anon)");
}
+ floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
+ SAVEFREESV(PL_compcv);
+
/* parameters */
+ params = NULL;
c = lex_peek_unichar(0);
if (c == '(') {
SV *saw_slurpy = NULL;
lex_read_unichar(0);
lex_read_space(0);
+ params = newAV();
+ sv_2mortal((SV *)params);
+
for (;;) {
c = lex_peek_unichar(0);
if (c == '$' || c == '@' || c == '%') {
- sv_catpvf(params, "%c", (int)c);
+ SV *param;
+
lex_read_unichar(0);
lex_read_space(0);
if (!(len = S_scan_word(aTHX_ s, FALSE))) {
croak("In %"SVf": missing identifier", SVfARG(declarator));
}
+ param = sv_2mortal(newSVpvf("%c%.*s", (int)c, (int)len, s));
if (saw_slurpy) {
- croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%c%.*s\"", SVfARG(declarator), SVfARG(saw_slurpy), (int)c, (int)len, s);
+ croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_slurpy), SVfARG(param));
}
if (c != '$') {
- saw_slurpy = sv_2mortal(newSVpvf("%c%.*s", (int)c, (int)len, s));
+ saw_slurpy = param;
}
- sv_catpvn(params, s, len);
- sv_catpvs(params, ",");
+ av_push(params, SvREFCNT_inc_simple_NN(param));
lex_read_to(s + len);
lex_read_space(0);
}
/* prototype */
+ proto = NULL;
saw_colon = 0;
c = lex_peek_unichar(0);
if (c == ':') {
c = lex_peek_unichar(0);
if (c != '(') {
- saw_colon = 1;
+ lex_stuff_pvs(":", 0);
+ c = ':';
} else {
- sv = sv_2mortal(newSVpvs(""));
- if (!S_scan_str(aTHX_ sv, TRUE, TRUE)) {
+ proto = sv_2mortal(newSVpvs(""));
+ if (!S_scan_str(aTHX_ proto, FALSE, FALSE)) {
croak("In %"SVf": prototype not terminated", SVfARG(declarator));
}
- sv_catsv(gen, sv);
+ S_check_prototype(declarator, proto);
lex_read_space(0);
+ c = lex_peek_unichar(0);
}
}
+ /* surprise predeclaration! */
if (saw_name) {
- len = SvCUR(gen);
- s = SvGROW(gen, (len + 1) * 2);
- sv_catpvs(gen, ";");
- sv_catpvn(gen, s, len);
+ /* 'sub NAME (PROTO);' to make name/proto known to perl before it
+ starts parsing the body */
+ SvREFCNT_inc_simple_void(PL_compcv);
+
+ newATTRSUB(
+ floor_ix,
+ newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)),
+ proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
+ NULL,
+ NULL
+ );
+
+ floor_ix = start_subparse(FALSE, 0);
+ SAVEFREESV(PL_compcv);
}
+
/* attributes */
- if (SvTRUE(spec->attrs)) {
- sv_catsv(gen, spec->attrs);
- }
+ Newx(attrs_sentinel, 1, OP *);
+ *attrs_sentinel = NULL;
+ SAVEDESTRUCTOR(free_ptr_op, attrs_sentinel);
+
+ if (c == ':' || c == '{') {
+
+ /* kludge default attributes in */
+ if (SvTRUE(spec->attrs) && SvPV_nolen(spec->attrs)[0] == ':') {
+ lex_stuff_sv(spec->attrs, 0);
+ c = ':';
+ }
- if (!saw_colon) {
- c = lex_peek_unichar(0);
if (c == ':') {
- saw_colon = 1;
lex_read_unichar(0);
lex_read_space(0);
- }
- }
- if (saw_colon) {
- for (;;) {
- s = PL_parser->bufptr;
- if (!(len = S_scan_word(aTHX_ s, FALSE))) {
- break;
- }
- sv_catpvs(gen, ":");
- sv_catpvn(gen, s, len);
- lex_read_to(s + len);
- lex_read_space(0);
c = lex_peek_unichar(0);
- if (c == '(') {
- sv = sv_2mortal(newSVpvs(""));
- if (!S_scan_str(aTHX_ sv, TRUE, TRUE)) {
- croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
+
+ for (;;) {
+ SV *attr;
+
+ s = PL_parser->bufptr;
+ if (!(len = S_scan_word(aTHX_ s, FALSE))) {
+ break;
}
- sv_catsv(gen, sv);
+
+ attr = sv_2mortal(newSVpvn_flags(s, len, PARSING_UTF ? SVf_UTF8 : 0));
+
+ lex_read_to(s + len);
lex_read_space(0);
c = lex_peek_unichar(0);
- }
- if (c == ':') {
- lex_read_unichar(0);
- lex_read_space(0);
+
+ if (c != '(') {
+ if (sv_eq_pvs(attr, "lvalue")) {
+ builtin_attrs |= MY_ATTR_LVALUE;
+ attr = NULL;
+ } else if (sv_eq_pvs(attr, "method")) {
+ builtin_attrs |= MY_ATTR_METHOD;
+ attr = NULL;
+ }
+ } else {
+ SV *sv = sv_2mortal(newSVpvs(""));
+ if (!S_scan_str(aTHX_ sv, TRUE, TRUE)) {
+ croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
+ }
+ sv_catsv(attr, sv);
+
+ lex_read_space(0);
+ c = lex_peek_unichar(0);
+ }
+
+ if (attr) {
+ *attrs_sentinel = op_append_elem(OP_LIST, *attrs_sentinel, newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(attr)));
+ }
+
+ if (c == ':') {
+ lex_read_unichar(0);
+ lex_read_space(0);
+ c = lex_peek_unichar(0);
+ }
}
}
}
/* body */
- c = lex_peek_unichar(0);
if (c != '{') {
croak("In %"SVf": I was expecting a function body, not \"%c\"", SVfARG(declarator), (int)c);
}
- lex_read_unichar(0);
- sv_catpvs(gen, "{");
- if (SvTRUE(spec->shift)) {
- sv_catpvs(gen, "my");
- sv_catsv(gen, spec->shift);
- sv_catpvs(gen, "=shift;");
+
+ if (builtin_attrs & MY_ATTR_LVALUE) {
+ CvLVALUE_on(PL_compcv);
}
- if (SvCUR(params)) {
- sv_catpvs(gen, "my(");
- sv_catsv(gen, params);
- sv_catpvs(gen, ")=@_;");
+ if (builtin_attrs & MY_ATTR_METHOD) {
+ CvMETHOD_on(PL_compcv);
+ }
+ if (builtin_attrs & MY_ATTR_SPECIAL) {
+ CvSPECIAL_on(PL_compcv);
}
- /* named sub */
- if (saw_name) {
- /* fprintf(stderr, "! [%.*s]\n", (int)(PL_bufend - PL_bufptr), PL_bufptr); */
- lex_stuff_sv(gen, SvUTF8(gen));
- *pop = parse_barestmt(0);
- return KEYWORD_PLUGIN_STMT;
+ /* munge */
+ {
+ /* create outer block: '{' */
+ const int save_ix = S_block_start(TRUE);
+ OP *init = NULL;
+
+ /* my $self = shift; */
+ if (SvTRUE(spec->shift)) {
+ OP *const var = newOP(OP_PADSV, OPf_WANT_SCALAR | (OPpLVAL_INTRO << 8));
+ var->op_targ = pad_add_name_sv(spec->shift, 0, NULL, NULL);
+
+ init = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
+ init = newSTATEOP(0, NULL, init);
+ }
+
+ /* my (PARAMS) = @_; */
+ if (params && av_len(params) > -1) {
+ SV *param;
+ OP *init_param, *left, *right;
+
+ left = NULL;
+ while ((param = av_shift(params)) != &PL_sv_undef) {
+ OP *const var = newOP(OP_PADSV, OPf_WANT_LIST | (OPpLVAL_INTRO << 8));
+ var->op_targ = pad_add_name_sv(param, 0, NULL, NULL);
+ SvREFCNT_dec(param);
+ left = op_append_elem(OP_LIST, left, var);
+ }
+
+ left->op_flags |= OPf_PARENS;
+ right = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
+ init_param = newASSIGNOP(OPf_STACKED, left, 0, right);
+ init_param = newSTATEOP(0, NULL, init_param);
+
+ init = op_append_list(OP_LINESEQ, init, init_param);
+ }
+
+ /* add '();' to make function return nothing by default */
+ /* (otherwise the invisible parameter initialization can "leak" into
+ the return value: fun ($x) {}->("asdf", 0) == 2) */
+ if (init) {
+ init = op_append_list(OP_LINESEQ, init, newSTATEOP(0, NULL, newOP(OP_STUB, OPf_PARENS)));
+ }
+
+ /* finally let perl parse the actual subroutine body */
+ body = parse_block(0);
+
+ body = op_append_list(OP_LINESEQ, init, body);
+
+ /* close outer block: '}' */
+ S_block_end(save_ix, body);
}
- /* anon sub */
- sv_catpvs(gen, "BEGIN{" MY_PKG "::_fini}");
- /* fprintf(stderr, "!> [%.*s]\n", (int)(PL_bufend - PL_bufptr), PL_bufptr); */
- lex_stuff_sv(gen, SvUTF8(gen));
- *pop = parse_arithexpr(0);
- s = PL_parser->bufptr;
- if (*s != '}') {
- croak("%s: internal error: expected '}', found '%c'", MY_PKG, *s);
+ /* it's go time. */
+ {
+ OP *const attrs = *attrs_sentinel;
+ *attrs_sentinel = NULL;
+ SvREFCNT_inc_simple_void(PL_compcv);
+
+ if (!saw_name) {
+ *pop = newANONATTRSUB(
+ floor_ix,
+ proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
+ attrs,
+ body
+ );
+ return KEYWORD_PLUGIN_EXPR;
+ }
+
+ newATTRSUB(
+ floor_ix,
+ newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(saw_name)),
+ proto ? newSVOP(OP_CONST, 0, SvREFCNT_inc_simple_NN(proto)) : NULL,
+ attrs,
+ body
+ );
+ *pop = NULL;
+ return KEYWORD_PLUGIN_STMT;
}
- lex_unstuff(s + 1);
- /* fprintf(stderr, "!< [%.*s]\n", (int)(PL_bufend - PL_bufptr), PL_bufptr); */
- return KEYWORD_PLUGIN_EXPR;
}
static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
return ret;
}
-static int magic_free(pTHX_ SV *sv, MAGIC *mg) {
- lex_stuff_pvn("}", 1, 0);
- /* fprintf(stderr, "!~ [%.*s]\n", (int)(PL_bufend - PL_bufptr), PL_bufptr); */
- return 0;
-}
-
-static int magic_nop(pTHX_ SV *sv, MAGIC *mg) {
- return 0;
-}
-
-static MGVTBL my_vtbl = {
- 0, /* get */
- 0, /* set */
- 0, /* len */
- 0, /* clear */
- magic_free, /* free */
- 0, /* copy */
- 0, /* dup */
- magic_nop /* local */
-};
-
WARNINGS_RESET
MODULE = Function::Parameters PACKAGE = Function::Parameters
next_keyword_plugin = PL_keyword_plugin;
PL_keyword_plugin = my_keyword_plugin;
} WARNINGS_RESET
-
-void
-_fini()
- CODE:
- sv_magicext((SV *)GvHV(PL_hintgv), NULL, PERL_MAGIC_ext, &my_vtbl, NULL, 0);
--- /dev/null
+/*
+ * This code was copied from perl/pad.c and perl/op.c and subsequently
+ * butchered by Lukas Mai (2012).
+ */
+/* vi: set ft=c inde=: */
+
+#define COP_SEQ_RANGE_LOW_set(SV, VAL) \
+ do { ((XPVNV*)SvANY(SV))->xnv_u.xpad_cop_seq.xlow = (VAL); } while (0)
+#define COP_SEQ_RANGE_HIGH_set(SV, VAL) \
+ do { ((XPVNV*)SvANY(SV))->xnv_u.xpad_cop_seq.xhigh = (VAL); } while (0)
+
+static void S_pad_block_start(pTHX_ int full) {
+ dVAR;
+ ASSERT_CURPAD_ACTIVE("pad_block_start");
+ SAVEI32(PL_comppad_name_floor);
+ PL_comppad_name_floor = AvFILLp(PL_comppad_name);
+ if (full)
+ PL_comppad_name_fill = PL_comppad_name_floor;
+ if (PL_comppad_name_floor < 0)
+ PL_comppad_name_floor = 0;
+ SAVEI32(PL_min_intro_pending);
+ SAVEI32(PL_max_intro_pending);
+ PL_min_intro_pending = 0;
+ SAVEI32(PL_comppad_name_fill);
+ SAVEI32(PL_padix_floor);
+ PL_padix_floor = PL_padix;
+ PL_pad_reset_pending = FALSE;
+}
+
+static int S_block_start(pTHX_ int full) {
+ dVAR;
+ const int retval = PL_savestack_ix;
+
+ S_pad_block_start(full);
+ SAVEHINTS();
+ PL_hints &= ~HINT_BLOCK_SCOPE;
+ SAVECOMPILEWARNINGS();
+ PL_compiling.cop_warnings = DUP_WARNINGS(PL_compiling.cop_warnings);
+
+ CALL_BLOCK_HOOKS(bhk_start, full);
+
+ return retval;
+}
+
+/* Check for in place reverse and sort assignments like "@a = reverse @a"
+ and modify the optree to make them work inplace */
+
+static void S_inplace_aassign(pTHX_ OP *o) {
+ OP *modop, *modop_pushmark;
+ OP *oright;
+ OP *oleft, *oleft_pushmark;
+
+ assert((o->op_flags & OPf_WANT) == OPf_WANT_VOID);
+
+ assert(cUNOPo->op_first->op_type == OP_NULL);
+ modop_pushmark = cUNOPx(cUNOPo->op_first)->op_first;
+ assert(modop_pushmark->op_type == OP_PUSHMARK);
+ modop = modop_pushmark->op_sibling;
+
+ if (modop->op_type != OP_SORT && modop->op_type != OP_REVERSE)
+ return;
+
+ /* no other operation except sort/reverse */
+ if (modop->op_sibling)
+ return;
+
+ assert(cUNOPx(modop)->op_first->op_type == OP_PUSHMARK);
+ if (!(oright = cUNOPx(modop)->op_first->op_sibling)) return;
+
+ if (modop->op_flags & OPf_STACKED) {
+ /* skip sort subroutine/block */
+ assert(oright->op_type == OP_NULL);
+ oright = oright->op_sibling;
+ }
+
+ assert(cUNOPo->op_first->op_sibling->op_type == OP_NULL);
+ oleft_pushmark = cUNOPx(cUNOPo->op_first->op_sibling)->op_first;
+ assert(oleft_pushmark->op_type == OP_PUSHMARK);
+ oleft = oleft_pushmark->op_sibling;
+
+ /* Check the lhs is an array */
+ if (!oleft ||
+ (oleft->op_type != OP_RV2AV && oleft->op_type != OP_PADAV)
+ || oleft->op_sibling
+ || (oleft->op_private & OPpLVAL_INTRO)
+ )
+ return;
+
+ /* Only one thing on the rhs */
+ if (oright->op_sibling)
+ return;
+
+ /* check the array is the same on both sides */
+ if (oleft->op_type == OP_RV2AV) {
+ if (oright->op_type != OP_RV2AV
+ || !cUNOPx(oright)->op_first
+ || cUNOPx(oright)->op_first->op_type != OP_GV
+ || cUNOPx(oleft )->op_first->op_type != OP_GV
+ || cGVOPx_gv(cUNOPx(oleft)->op_first) !=
+ cGVOPx_gv(cUNOPx(oright)->op_first)
+ )
+ return;
+ }
+ else if (oright->op_type != OP_PADAV
+ || oright->op_targ != oleft->op_targ
+ )
+ return;
+
+ /* This actually is an inplace assignment */
+
+ modop->op_private |= OPpSORT_INPLACE;
+
+ /* transfer MODishness etc from LHS arg to RHS arg */
+ oright->op_flags = oleft->op_flags;
+
+ /* remove the aassign op and the lhs */
+ op_null(o);
+ op_null(oleft_pushmark);
+ if (oleft->op_type == OP_RV2AV && cUNOPx(oleft)->op_first)
+ op_null(cUNOPx(oleft)->op_first);
+ op_null(oleft);
+}
+
+static OP *S_scalarvoid(pTHX_ OP *);
+
+static OP *S_scalar(pTHX_ OP *o) {
+ dVAR;
+ OP *kid;
+
+ /* assumes no premature commitment */
+ if (!o || (PL_parser && PL_parser->error_count)
+ || (o->op_flags & OPf_WANT)
+ || o->op_type == OP_RETURN)
+ {
+ return o;
+ }
+
+ o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR;
+
+ switch (o->op_type) {
+ case OP_REPEAT:
+ S_scalar(cBINOPo->op_first);
+ break;
+ case OP_OR:
+ case OP_AND:
+ case OP_COND_EXPR:
+ for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling)
+ S_scalar(kid);
+ break;
+ /* FALL THROUGH */
+ case OP_SPLIT:
+ case OP_MATCH:
+ case OP_QR:
+ case OP_SUBST:
+ case OP_NULL:
+ default:
+ if (o->op_flags & OPf_KIDS) {
+ for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling)
+ S_scalar(kid);
+ }
+ break;
+ case OP_LEAVE:
+ case OP_LEAVETRY:
+ kid = cLISTOPo->op_first;
+ S_scalar(kid);
+ kid = kid->op_sibling;
+do_kids:
+ while (kid) {
+ OP *sib = kid->op_sibling;
+ if (sib && kid->op_type != OP_LEAVEWHEN)
+ S_scalarvoid(kid);
+ else
+ S_scalar(kid);
+ kid = sib;
+ }
+ PL_curcop = &PL_compiling;
+ break;
+ case OP_SCOPE:
+ case OP_LINESEQ:
+ case OP_LIST:
+ kid = cLISTOPo->op_first;
+ goto do_kids;
+ case OP_SORT:
+ Perl_ck_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context");
+ break;
+ }
+ return o;
+}
+
+static OP *S_scalarkids(pTHX_ OP *o) {
+ if (o && o->op_flags & OPf_KIDS) {
+ OP *kid;
+ for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
+ S_scalar(kid);
+ }
+ return o;
+}
+
+static OP *S_scalarvoid(pTHX_ OP *o) {
+ dVAR;
+ OP *kid;
+ const char *useless = NULL;
+ U32 useless_is_utf8 = 0;
+ SV *sv;
+ U8 want;
+
+ PERL_ARGS_ASSERT_SCALARVOID;
+
+ if (
+ o->op_type == OP_NEXTSTATE ||
+ o->op_type == OP_DBSTATE || (
+ o->op_type == OP_NULL && (
+ o->op_targ == OP_NEXTSTATE ||
+ o->op_targ == OP_DBSTATE
+ )
+ )
+ ) {
+ PL_curcop = (COP*)o; /* for warning below */
+ }
+
+ /* assumes no premature commitment */
+ want = o->op_flags & OPf_WANT;
+ if (
+ (want && want != OPf_WANT_SCALAR) ||
+ (PL_parser && PL_parser->error_count) ||
+ o->op_type == OP_RETURN ||
+ o->op_type == OP_REQUIRE ||
+ o->op_type == OP_LEAVEWHEN
+ ) {
+ return o;
+ }
+
+ if (
+ (o->op_private & OPpTARGET_MY) &&
+ (PL_opargs[o->op_type] & OA_TARGLEX)
+ /* OPp share the meaning */
+ ) {
+ return S_scalar(o); /* As if inside SASSIGN */
+ }
+
+ o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID;
+
+ switch (o->op_type) {
+ default:
+ if (!(PL_opargs[o->op_type] & OA_FOLDCONST))
+ break;
+ /* FALL THROUGH */
+ case OP_REPEAT:
+ if (o->op_flags & OPf_STACKED)
+ break;
+ goto func_ops;
+ case OP_SUBSTR:
+ if (o->op_private == 4)
+ break;
+ /* FALL THROUGH */
+ case OP_GVSV:
+ case OP_WANTARRAY:
+ case OP_GV:
+ case OP_SMARTMATCH:
+ case OP_PADSV:
+ case OP_PADAV:
+ case OP_PADHV:
+ case OP_PADANY:
+ case OP_AV2ARYLEN:
+ case OP_REF:
+ case OP_REFGEN:
+ case OP_SREFGEN:
+ case OP_DEFINED:
+ case OP_HEX:
+ case OP_OCT:
+ case OP_LENGTH:
+ case OP_VEC:
+ case OP_INDEX:
+ case OP_RINDEX:
+ case OP_SPRINTF:
+ case OP_AELEM:
+ case OP_AELEMFAST:
+ case OP_AELEMFAST_LEX:
+ case OP_ASLICE:
+ case OP_HELEM:
+ case OP_HSLICE:
+ case OP_UNPACK:
+ case OP_PACK:
+ case OP_JOIN:
+ case OP_LSLICE:
+ case OP_ANONLIST:
+ case OP_ANONHASH:
+ case OP_SORT:
+ case OP_REVERSE:
+ case OP_RANGE:
+ case OP_FLIP:
+ case OP_FLOP:
+ case OP_CALLER:
+ case OP_FILENO:
+ case OP_EOF:
+ case OP_TELL:
+ case OP_GETSOCKNAME:
+ case OP_GETPEERNAME:
+ case OP_READLINK:
+ case OP_TELLDIR:
+ case OP_GETPPID:
+ case OP_GETPGRP:
+ case OP_GETPRIORITY:
+ case OP_TIME:
+ case OP_TMS:
+ case OP_LOCALTIME:
+ case OP_GMTIME:
+ case OP_GHBYNAME:
+ case OP_GHBYADDR:
+ case OP_GHOSTENT:
+ case OP_GNBYNAME:
+ case OP_GNBYADDR:
+ case OP_GNETENT:
+ case OP_GPBYNAME:
+ case OP_GPBYNUMBER:
+ case OP_GPROTOENT:
+ case OP_GSBYNAME:
+ case OP_GSBYPORT:
+ case OP_GSERVENT:
+ case OP_GPWNAM:
+ case OP_GPWUID:
+ case OP_GGRNAM:
+ case OP_GGRGID:
+ case OP_GETLOGIN:
+ case OP_PROTOTYPE:
+ case OP_RUNCV:
+func_ops:
+ if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)))
+ /* Otherwise it's "Useless use of grep iterator" */
+ useless = OP_DESC(o);
+ break;
+
+ case OP_SPLIT:
+ kid = cLISTOPo->op_first;
+ if (kid && kid->op_type == OP_PUSHRE
+#ifdef USE_ITHREADS
+ && !((PMOP*)kid)->op_pmreplrootu.op_pmtargetoff)
+#else
+ && !((PMOP*)kid)->op_pmreplrootu.op_pmtargetgv)
+#endif
+ useless = OP_DESC(o);
+ break;
+
+ case OP_NOT:
+ kid = cUNOPo->op_first;
+ if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST &&
+ kid->op_type != OP_TRANS && kid->op_type != OP_TRANSR) {
+ goto func_ops;
+ }
+ useless = "negative pattern binding (!~)";
+ break;
+
+ case OP_SUBST:
+ if (cPMOPo->op_pmflags & PMf_NONDESTRUCT)
+ useless = "non-destructive substitution (s///r)";
+ break;
+
+ case OP_TRANSR:
+ useless = "non-destructive transliteration (tr///r)";
+ break;
+
+ case OP_RV2GV:
+ case OP_RV2SV:
+ case OP_RV2AV:
+ case OP_RV2HV:
+ if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) &&
+ (!o->op_sibling || o->op_sibling->op_type != OP_READLINE))
+ useless = "a variable";
+ break;
+
+ case OP_CONST:
+ sv = cSVOPo_sv;
+ if (cSVOPo->op_private & OPpCONST_STRICT) {
+ //no_bareword_allowed(o);
+ *((int *)NULL) += 1;
+ } else {
+ if (ckWARN(WARN_VOID)) {
+ /* don't warn on optimised away booleans, eg
+ * use constant Foo, 5; Foo || print; */
+ if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT)
+ useless = NULL;
+ /* the constants 0 and 1 are permitted as they are
+ conventionally used as dummies in constructs like
+ 1 while some_condition_with_side_effects; */
+ else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0))
+ useless = NULL;
+ else if (SvPOK(sv)) {
+ /* perl4's way of mixing documentation and code
+ (before the invention of POD) was based on a
+ trick to mix nroff and perl code. The trick was
+ built upon these three nroff macros being used in
+ void context. The pink camel has the details in
+ the script wrapman near page 319. */
+ const char * const maybe_macro = SvPVX_const(sv);
+ if (strnEQ(maybe_macro, "di", 2) ||
+ strnEQ(maybe_macro, "ds", 2) ||
+ strnEQ(maybe_macro, "ig", 2))
+ useless = NULL;
+ else {
+ SV * const dsv = newSVpvs("");
+ SV* msv = sv_2mortal(Perl_newSVpvf(aTHX_
+ "a constant (%s)",
+ pv_pretty(dsv, maybe_macro, SvCUR(sv), 32, NULL, NULL,
+ PERL_PV_PRETTY_DUMP | PERL_PV_ESCAPE_NOCLEAR | PERL_PV_ESCAPE_UNI_DETECT )));
+ SvREFCNT_dec(dsv);
+ useless = SvPV_nolen(msv);
+ useless_is_utf8 = SvUTF8(msv);
+ }
+ }
+ else if (SvOK(sv)) {
+ SV* msv = sv_2mortal(Perl_newSVpvf(aTHX_
+ "a constant (%"SVf")", sv));
+ useless = SvPV_nolen(msv);
+ }
+ else
+ useless = "a constant (undef)";
+ }
+ }
+ op_null(o); /* don't execute or even remember it */
+ break;
+
+ case OP_POSTINC:
+ o->op_type = OP_PREINC; /* pre-increment is faster */
+ o->op_ppaddr = PL_ppaddr[OP_PREINC];
+ break;
+
+ case OP_POSTDEC:
+ o->op_type = OP_PREDEC; /* pre-decrement is faster */
+ o->op_ppaddr = PL_ppaddr[OP_PREDEC];
+ break;
+
+ case OP_I_POSTINC:
+ o->op_type = OP_I_PREINC; /* pre-increment is faster */
+ o->op_ppaddr = PL_ppaddr[OP_I_PREINC];
+ break;
+
+ case OP_I_POSTDEC:
+ o->op_type = OP_I_PREDEC; /* pre-decrement is faster */
+ o->op_ppaddr = PL_ppaddr[OP_I_PREDEC];
+ break;
+
+ case OP_SASSIGN: {
+ OP *rv2gv;
+ UNOP *refgen, *rv2cv;
+ LISTOP *exlist;
+
+ if ((o->op_private & ~OPpASSIGN_BACKWARDS) != 2)
+ break;
+
+ rv2gv = ((BINOP *)o)->op_last;
+ if (!rv2gv || rv2gv->op_type != OP_RV2GV)
+ break;
+
+ refgen = (UNOP *)((BINOP *)o)->op_first;
+
+ if (!refgen || refgen->op_type != OP_REFGEN)
+ break;
+
+ exlist = (LISTOP *)refgen->op_first;
+ if (!exlist || exlist->op_type != OP_NULL
+ || exlist->op_targ != OP_LIST)
+ break;
+
+ if (exlist->op_first->op_type != OP_PUSHMARK)
+ break;
+
+ rv2cv = (UNOP*)exlist->op_last;
+
+ if (rv2cv->op_type != OP_RV2CV)
+ break;
+
+ assert ((rv2gv->op_private & OPpDONT_INIT_GV) == 0);
+ assert ((o->op_private & OPpASSIGN_CV_TO_GV) == 0);
+ assert ((rv2cv->op_private & OPpMAY_RETURN_CONSTANT) == 0);
+
+ o->op_private |= OPpASSIGN_CV_TO_GV;
+ rv2gv->op_private |= OPpDONT_INIT_GV;
+ rv2cv->op_private |= OPpMAY_RETURN_CONSTANT;
+
+ break;
+ }
+
+ case OP_AASSIGN: {
+ S_inplace_aassign(o);
+ break;
+ }
+
+ case OP_OR:
+ case OP_AND:
+ kid = cLOGOPo->op_first;
+ if (kid->op_type == OP_NOT
+ && (kid->op_flags & OPf_KIDS)
+ && !PL_madskills) {
+ if (o->op_type == OP_AND) {
+ o->op_type = OP_OR;
+ o->op_ppaddr = PL_ppaddr[OP_OR];
+ } else {
+ o->op_type = OP_AND;
+ o->op_ppaddr = PL_ppaddr[OP_AND];
+ }
+ op_null(kid);
+ }
+
+ case OP_DOR:
+ case OP_COND_EXPR:
+ case OP_ENTERGIVEN:
+ case OP_ENTERWHEN:
+ for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling)
+ S_scalarvoid(kid);
+ break;
+
+ case OP_NULL:
+ if (o->op_flags & OPf_STACKED)
+ break;
+ /* FALL THROUGH */
+ case OP_NEXTSTATE:
+ case OP_DBSTATE:
+ case OP_ENTERTRY:
+ case OP_ENTER:
+ if (!(o->op_flags & OPf_KIDS))
+ break;
+ /* FALL THROUGH */
+ case OP_SCOPE:
+ case OP_LEAVE:
+ case OP_LEAVETRY:
+ case OP_LEAVELOOP:
+ case OP_LINESEQ:
+ case OP_LIST:
+ case OP_LEAVEGIVEN:
+ case OP_LEAVEWHEN:
+ for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling)
+ S_scalarvoid(kid);
+ break;
+ case OP_ENTEREVAL:
+ S_scalarkids(o);
+ break;
+ case OP_SCALAR:
+ return S_scalar(o);
+ }
+ if (useless)
+ Perl_ck_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %"SVf" in void context",
+ newSVpvn_flags(useless, strlen(useless),
+ SVs_TEMP | ( useless_is_utf8 ? SVf_UTF8 : 0 )));
+ return o;
+}
+
+static OP *S_scalarseq(pTHX_ OP *o) {
+ dVAR;
+ if (o) {
+ const OPCODE type = o->op_type;
+
+ if (type == OP_LINESEQ || type == OP_SCOPE ||
+ type == OP_LEAVE || type == OP_LEAVETRY)
+ {
+ OP *kid;
+ for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) {
+ if (kid->op_sibling) {
+ S_scalarvoid(kid);
+ }
+ }
+ PL_curcop = &PL_compiling;
+ }
+ o->op_flags &= ~OPf_PARENS;
+ if (PL_hints & HINT_BLOCK_SCOPE)
+ o->op_flags |= OPf_PARENS;
+ }
+ else
+ o = newOP(OP_STUB, 0);
+ return o;
+}
+
+static void S_pad_leavemy(pTHX) {
+ dVAR;
+ I32 off;
+ SV * const * const svp = AvARRAY(PL_comppad_name);
+
+ PL_pad_reset_pending = FALSE;
+
+ ASSERT_CURPAD_ACTIVE("pad_leavemy");
+ if (PL_min_intro_pending && PL_comppad_name_fill < PL_min_intro_pending) {
+ for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) {
+ const SV * const sv = svp[off];
+ if (sv && sv != &PL_sv_undef && !SvFAKE(sv))
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
+ "%"SVf" never introduced",
+ SVfARG(sv));
+ }
+ }
+ /* "Deintroduce" my variables that are leaving with this scope. */
+ for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_fill; off--) {
+ const SV * const sv = svp[off];
+ if (sv && sv != &PL_sv_undef && !SvFAKE(sv)
+ && COP_SEQ_RANGE_HIGH(sv) == PERL_PADSEQ_INTRO)
+ {
+ COP_SEQ_RANGE_HIGH_set(sv, PL_cop_seqmax);
+ DEBUG_Xv(PerlIO_printf(Perl_debug_log,
+ "Pad leavemy: %ld \"%s\", (%lu,%lu)\n",
+ (long)off, SvPVX_const(sv),
+ (unsigned long)COP_SEQ_RANGE_LOW(sv),
+ (unsigned long)COP_SEQ_RANGE_HIGH(sv))
+ );
+ }
+ }
+ PL_cop_seqmax++;
+ if (PL_cop_seqmax == PERL_PADSEQ_INTRO) /* not a legal value */
+ PL_cop_seqmax++;
+ DEBUG_Xv(PerlIO_printf(Perl_debug_log,
+ "Pad leavemy: seq = %ld\n", (long)PL_cop_seqmax));
+}
+
+static OP *S_block_end(pTHX_ I32 floor, OP *seq) {
+ dVAR;
+ const int needblockscope = PL_hints & HINT_BLOCK_SCOPE;
+ OP *retval = S_scalarseq(seq);
+
+ CALL_BLOCK_HOOKS(bhk_pre_end, &retval);
+
+ LEAVE_SCOPE(floor);
+ CopHINTS_set(&PL_compiling, PL_hints);
+ if (needblockscope)
+ PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */
+ S_pad_leavemy();
+
+ CALL_BLOCK_HOOKS(bhk_post_end, &retval);
+
+ return retval;
+}
#
) ##AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
{ ##
- ##
+ $self ##
} ##
method add($y) {
#
) ##AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
{ ##
- ##
+ $class##
} ##
clathod add($y) {
, 0xf00d / 2, "basic sanity 4 - () proto";
is eval('my $x = fun forbidden {}'), undef, "statements aren't expressions";
-like $@, qr/syntax error/;
+like $@, qr/expect.*function body/;
is eval('my $x = { fun forbidden {} }'), undef, "statements aren't expressions 2 - electric boogaloo";
-like $@, qr/syntax error/;
+like $@, qr/expect.*function body/;
is fun { join '.', five, four }->(), '5.4', "can immedicall anon subs";
--- /dev/null
+#!perl
+
+use Test::More tests => 21;
+
+use warnings FATAL => 'all';
+use strict;
+
+use Function::Parameters;
+
+fun mk_counter($i) {
+ fun () { $i++ }
+}
+
+method nop() {}
+fun fnop($x, $y, $z) {
+}
+
+is_deeply [nop], [];
+is_deeply [main->nop], [];
+is_deeply [nop 1], [];
+is scalar(nop), undef;
+is scalar(nop 2), undef;
+
+is_deeply [fnop], [];
+is_deeply [fnop 3, 4], [];
+is scalar(fnop), undef;
+is scalar(fnop 5, 6), undef;
+
+my $f = mk_counter 0;
+my $g = mk_counter 10;
+my $h = mk_counter 50;
+
+is $f->(), 0;
+is $g->(), 10;
+is $h->(), 50;
+is $f->(), 1;
+is $g->(), 11;
+is $h->(), 51;
+is $f->(), 2;
+is $f->(), 3;
+is $f->(), 4;
+is $g->(), 12;
+is $h->(), 52;
+is $g->(), 13;
#define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline))
#ifdef USE_UTF8_SCRIPTS
-# define UTF (!IN_BYTES)
+# define PARSING_UTF (!IN_BYTES)
#else
-# define UTF ((PL_linestr && DO_UTF8(PL_linestr)) || (PL_hints & HINT_UTF8))
+# define PARSING_UTF ((PL_linestr && DO_UTF8(PL_linestr)) || (PL_hints & HINT_UTF8))
#endif
static STRLEN S_scan_word(pTHX_ const char *start, int allow_package) {
const char *s = start;
for (;;) {
- if (isALNUM(*s) || (!UTF && isALNUMC_L1(*s))) { /* UTF handled below */
+ if (isALNUM(*s) || (!PARSING_UTF && isALNUMC_L1(*s))) { /* UTF handled below */
s++;
- } else if (allow_package && s > start && *s == '\'' && isIDFIRST_lazy_if(s+1, UTF)) {
+ } else if (allow_package && s > start && *s == '\'' && isIDFIRST_lazy_if(s+1, PARSING_UTF)) {
s++;
- } else if (allow_package && s[0] == ':' && s[1] == ':' && isIDFIRST_lazy_if(s+2, UTF)) {
+ } else if (allow_package && s[0] == ':' && s[1] == ':' && isIDFIRST_lazy_if(s+2, PARSING_UTF)) {
s += 2;
- } else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) {
+ } else if (PARSING_UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) {
do {
s += UTF8SKIP(s);
} while (UTF8_IS_CONTINUED(*s) && is_utf8_mark((U8*)s));
/* after skipping whitespace, the next character is the terminator */
term = *s;
- if (!UTF) {
+ if (!PARSING_UTF) {
termcode = termstr[0] = term;
termlen = 1;
}
sv_catpvn(sv, s, termlen);
s += termlen;
for (;;) {
- if (PL_encoding && !UTF) {
+ if (PL_encoding && !PARSING_UTF) {
bool cont = TRUE;
while (cont) {
if (s+termlen <= PL_bufend && memEQ(s, (char*)termstr, termlen))
break;
}
- else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF)
+ else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && PARSING_UTF)
has_utf8 = TRUE;
*to = *s;
}
break;
else if (*s == PL_multi_open)
brackets++;
- else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF)
+ else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && PARSING_UTF)
has_utf8 = TRUE;
*to = *s;
}
/* at this point, we have successfully read the delimited string */
- if (!PL_encoding || UTF) {
+ if (!PL_encoding || PARSING_UTF) {
if (keep_delims)
sv_catpvn(sv, s, termlen);
s += termlen;
PL_bufptr = s;
return s;
}
+
+static void S_check_prototype(const SV *declarator, SV *proto) {
+ bool bad_proto = FALSE;
+ bool in_brackets = FALSE;
+ char greedy_proto = ' ';
+ bool proto_after_greedy_proto = FALSE;
+ bool must_be_last = FALSE;
+ bool underscore = FALSE;
+ bool seen_underscore = FALSE;
+ const bool warnillegalproto = ckWARN(WARN_ILLEGALPROTO);
+ char *d, *p;
+ STRLEN tmp, tmplen;
+
+ /* strip spaces and check for bad characters */
+ d = SvPV(proto, tmplen);
+ tmp = 0;
+ for (p = d; tmplen; tmplen--, ++p) {
+ if (!isSPACE(*p)) {
+ d[tmp++] = *p;
+
+ if (warnillegalproto) {
+ if (must_be_last) {
+ proto_after_greedy_proto = TRUE;
+ }
+ if (!strchr("$@%*;[]&\\_+", *p) || *p == '\0') {
+ bad_proto = TRUE;
+ } else {
+ if (underscore) {
+ if (!strchr(";@%", *p)) {
+ bad_proto = TRUE;
+ }
+ underscore = FALSE;
+ }
+ if (*p == '[') {
+ in_brackets = TRUE;
+ } else if (*p == ']') {
+ in_brackets = FALSE;
+ } else if (
+ (*p == '@' || *p == '%') &&
+ (tmp < 2 || d[tmp - 2] != '\\') &&
+ !in_brackets
+ ) {
+ must_be_last = TRUE;
+ greedy_proto = *p;
+ } else if (*p == '_') {
+ underscore = seen_underscore = TRUE;
+ }
+ }
+ }
+ }
+ }
+ d[tmp] = '\0';
+ SvCUR_set(proto, tmp);
+ if (proto_after_greedy_proto) {
+ Perl_warner(aTHX_ packWARN(WARN_ILLEGALPROTO),
+ "In %"SVf": prototype after '%c': %s",
+ SVfARG(declarator), greedy_proto, d
+ );
+ }
+ if (bad_proto) {
+ SV *dsv = newSVpvs_flags("", SVs_TEMP);
+ Perl_warner(aTHX_ packWARN(WARN_ILLEGALPROTO),
+ "In %"SVf": illegal character %sin prototype: %s",
+ SVfARG(declarator),
+ seen_underscore ? "after '_' " : "",
+ SvUTF8(proto)
+ ? sv_uni_display(dsv,
+ newSVpvn_flags(d, tmp, SVs_TEMP | SVf_UTF8),
+ tmp,
+ UNI_DISPLAY_ISPRINT
+ )
+ : pv_pretty(dsv, d, tmp, 60, NULL, NULL,
+ PERL_PV_ESCAPE_NONASCII
+ )
+ );
+ }
+ SvCUR_set(proto, tmp);
+}
+
+#undef CLINE
/* ^^^^^^^^^^^^^^^^^^^^^ I HAVE NO IDEA WHAT I'M DOING ^^^^^^^^^^^^^^^^^^^^ */
projects / p5sagit/Function-Parameters.git / commitdiff