I32 floor_ix;
int save_ix;
SV *saw_name;
+ OP **prelude_sentinel;
AV *params;
DefaultParamSpec *defaults;
int args_min, args_max;
/* create outer block: '{' */
save_ix = S_block_start(aTHX_ TRUE);
+ /* initialize synthetic optree */
+ Newx(prelude_sentinel, 1, OP *);
+ *prelude_sentinel = NULL;
+ SAVEDESTRUCTOR_X(free_ptr_op, prelude_sentinel);
+
/* parameters */
params = NULL;
defaults = NULL;
args_min = 0;
args_max = -1;
+ /* my $self; */
+ if (SvTRUE(spec->shift)) {
+ OP *var;
+
+ var = newOP(OP_PADSV, OPf_MOD | (OPpLVAL_INTRO << 8));
+ var->op_targ = pad_add_name_sv(spec->shift, 0, NULL, NULL);
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
+ }
+
c = lex_peek_unichar(0);
if (c == '(') {
DefaultParamSpec **pdefaults_tail = &defaults;
c = lex_peek_unichar(0);
}
+ /* my $param; */
+ {
+ OP *var;
+
+ var = newOP(OP_PADSV, OPf_MOD | (OPpLVAL_INTRO << 8));
+ var->op_targ = pad_add_name_sv(param, 0, NULL, NULL);
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
+ }
+
if (c == ',') {
lex_read_unichar(0);
lex_read_space(0);
);
}
-
if (builtin_attrs & MY_ATTR_LVALUE) {
CvLVALUE_on(PL_compcv);
}
CvSPECIAL_on(PL_compcv);
}
- /* munge */
- {
- OP **prelude_sentinel = NULL;
-
- Newx(prelude_sentinel, 1, OP *);
- *prelude_sentinel = NULL;
- SAVEDESTRUCTOR_X(free_ptr_op, prelude_sentinel);
-
- /* min/max argument count checks */
- if (spec->flags & FLAG_CHECK_NARGS) {
- if (SvTRUE(spec->shift)) {
- args_min++;
- if (args_max != -1) {
- args_max++;
- }
+ /* min/max argument count checks */
+ if (spec->flags & FLAG_CHECK_NARGS) {
+ if (SvTRUE(spec->shift)) {
+ args_min++;
+ if (args_max != -1) {
+ args_max++;
}
+ }
- if (args_min > 0) {
- OP *chk, *cond, *err, *croak;
+ if (args_min > 0) {
+ OP *chk, *cond, *err, *croak;
- err = newSVOP(OP_CONST, 0,
- newSVpvf("Not enough arguments for %"SVf, SVfARG(declarator)));
+ err = newSVOP(OP_CONST, 0,
+ newSVpvf("Not enough arguments for %"SVf, SVfARG(declarator)));
- croak = newCVREF(OPf_WANT_SCALAR,
- newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
- err = newUNOP(OP_ENTERSUB, OPf_STACKED,
- op_append_elem(OP_LIST, err, croak));
+ croak = newCVREF(OPf_WANT_SCALAR,
+ newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
+ err = newUNOP(OP_ENTERSUB, OPf_STACKED,
+ op_append_elem(OP_LIST, err, croak));
- cond = newBINOP(OP_LT, 0,
- newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
- newSVOP(OP_CONST, 0, newSViv(args_min)));
- chk = newLOGOP(OP_AND, 0, cond, err);
+ cond = newBINOP(OP_LT, 0,
+ newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
+ newSVOP(OP_CONST, 0, newSViv(args_min)));
+ chk = newLOGOP(OP_AND, 0, cond, err);
- *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
- }
- if (args_max != -1) {
- OP *chk, *cond, *err, *croak;
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
+ }
+ if (args_max != -1) {
+ OP *chk, *cond, *err, *croak;
- err = newSVOP(OP_CONST, 0,
- newSVpvf("Too many arguments for %"SVf, SVfARG(declarator)));
+ err = newSVOP(OP_CONST, 0,
+ newSVpvf("Too many arguments for %"SVf, SVfARG(declarator)));
- croak = newCVREF(OPf_WANT_SCALAR,
- newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
- err = newUNOP(OP_ENTERSUB, OPf_STACKED,
- op_append_elem(OP_LIST, err, croak));
+ croak = newCVREF(OPf_WANT_SCALAR,
+ newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
+ err = newUNOP(OP_ENTERSUB, OPf_STACKED,
+ op_append_elem(OP_LIST, err, croak));
- cond = newBINOP(OP_GT, 0,
- newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
- newSVOP(OP_CONST, 0, newSViv(args_max)));
- chk = newLOGOP(OP_AND, 0, cond, err);
+ cond = newBINOP(OP_GT, 0,
+ newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
+ newSVOP(OP_CONST, 0, newSViv(args_max)));
+ chk = newLOGOP(OP_AND, 0, cond, err);
- *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
- }
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
}
+ }
- /* my $self = shift; */
- if (SvTRUE(spec->shift)) {
- OP *var, *shift;
-
- var = newOP(OP_PADSV, OPf_WANT_SCALAR | (OPpLVAL_INTRO << 8));
- var->op_targ = pad_add_name_sv(spec->shift, 0, NULL, NULL);
-
- shift = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
- *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, shift));
- }
+ /* $self = shift; */
+ if (SvTRUE(spec->shift)) {
+ OP *var, *shift;
- /* my (PARAMS) = @_; */
- if (params && av_len(params) > -1) {
- SV *param;
- OP *init_param, *left, *right;
-
- left = NULL;
- while ((param = av_shift(params)) != &PL_sv_undef) {
- OP *const var = newOP(OP_PADSV, OPf_WANT_LIST | (OPpLVAL_INTRO << 8));
- var->op_targ = pad_add_name_sv(param, 0, NULL, NULL);
- SvREFCNT_dec(param);
- left = op_append_elem(OP_LIST, left, var);
- }
+ var = newOP(OP_PADSV, OPf_WANT_SCALAR);
+ var->op_targ = pad_findmy_sv(spec->shift, 0);
- left->op_flags |= OPf_PARENS;
- right = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
- init_param = newASSIGNOP(OPf_STACKED, left, 0, right);
- init_param = newSTATEOP(0, NULL, init_param);
+ shift = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, shift));
+ }
- *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, init_param);
+ /* (PARAMS) = @_; */
+ if (params && av_len(params) > -1) {
+ SV *param;
+ OP *init_param, *left, *right;
+
+ left = NULL;
+ while ((param = av_shift(params)) != &PL_sv_undef) {
+ OP *const var = newOP(OP_PADSV, OPf_WANT_LIST);
+ var->op_targ = pad_findmy_sv(param, 0);
+ SvREFCNT_dec(param);
+ left = op_append_elem(OP_LIST, left, var);
}
- /* defaults */
- {
- OP *gen = NULL;
- DefaultParamSpec *dp;
+ left->op_flags |= OPf_PARENS;
+ right = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
+ init_param = newASSIGNOP(OPf_STACKED, left, 0, right);
+ init_param = newSTATEOP(0, NULL, init_param);
- for (dp = defaults; dp; dp = dp->next) {
- OP *init = dp->init;
- OP *var, *args, *cond;
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, init_param);
+ }
- /* var = `$,name */
- var = newOP(OP_PADSV, 0);
- var->op_targ = pad_findmy_sv(dp->name, 0);
+ /* defaults */
+ {
+ OP *gen = NULL;
+ DefaultParamSpec *dp;
- /* init = `,var = ,init */
- init = newASSIGNOP(OPf_STACKED, var, 0, init);
+ for (dp = defaults; dp; dp = dp->next) {
+ OP *init = dp->init;
+ OP *var, *args, *cond;
- /* args = `@_ */
- args = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
+ /* var = `$,name */
+ var = newOP(OP_PADSV, 0);
+ var->op_targ = pad_findmy_sv(dp->name, 0);
- /* cond = `,args < ,index */
- cond = newBINOP(OP_LT, 0, args, newSVOP(OP_CONST, 0, newSViv(dp->limit)));
+ /* init = `,var = ,init */
+ init = newASSIGNOP(OPf_STACKED, var, 0, init);
- /* init = `,init if ,cond */
- init = newLOGOP(OP_AND, 0, cond, init);
+ /* args = `@_ */
+ args = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
- /* gen = `,gen ; ,init */
- gen = op_append_list(OP_LINESEQ, gen, newSTATEOP(0, NULL, init));
+ /* cond = `,args < ,index */
+ cond = newBINOP(OP_LT, 0, args, newSVOP(OP_CONST, 0, newSViv(dp->limit)));
- dp->init = NULL;
- }
+ /* init = `,init if ,cond */
+ init = newLOGOP(OP_AND, 0, cond, init);
- *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, gen);
+ /* gen = `,gen ; ,init */
+ gen = op_append_list(OP_LINESEQ, gen, newSTATEOP(0, NULL, init));
+
+ dp->init = NULL;
}
- /* finally let perl parse the actual subroutine body */
- body = parse_block(0);
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, gen);
+ }
- /* add '();' to make function return nothing by default */
- /* (otherwise the invisible parameter initialization can "leak" into
- the return value: fun ($x) {}->("asdf", 0) == 2) */
- if (*prelude_sentinel) {
- body = newSTATEOP(0, NULL, body);
- }
+ /* finally let perl parse the actual subroutine body */
+ body = parse_block(0);
- body = op_append_list(OP_LINESEQ, *prelude_sentinel, body);
- *prelude_sentinel = NULL;
+ /* 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 (*prelude_sentinel) {
+ body = newSTATEOP(0, NULL, body);
}
+ body = op_append_list(OP_LINESEQ, *prelude_sentinel, body);
+ *prelude_sentinel = NULL;
+
/* it's go time. */
{
OP *const attrs = *attrs_sentinel;
projects / p5sagit/Function-Parameters.git / blobdiff