WARNINGS_ENABLEW(-Wall) \
WARNINGS_ENABLEW(-Wextra) \
WARNINGS_ENABLEW(-Wundef) \
- WARNINGS_ENABLEW(-Wshadow) \
+ /* WARNINGS_ENABLEW(-Wshadow) :-( */ \
WARNINGS_ENABLEW(-Wbad-function-cast) \
WARNINGS_ENABLEW(-Wcast-align) \
WARNINGS_ENABLEW(-Wwrite-strings) \
#include <string.h>
+
WARNINGS_ENABLE
+
+#define HAVE_PERL_VERSION(R, V, S) \
+ (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
+
+#if HAVE_PERL_VERSION(5, 16, 0)
+ #define IF_HAVE_PERL_5_16(YES, NO) YES
+#else
+ #define IF_HAVE_PERL_5_16(YES, NO) NO
+#endif
+
+#if 0
+ #if HAVE_PERL_VERSION(5, 17, 6)
+ #error "internal error: missing definition of KEY_my (your perl is too new)"
+ #elif HAVE_PERL_VERSION(5, 15, 8)
+ #define S_KEY_my 134
+ #elif HAVE_PERL_VERSION(5, 15, 6)
+ #define S_KEY_my 133
+ #elif HAVE_PERL_VERSION(5, 15, 5)
+ #define S_KEY_my 132
+ #elif HAVE_PERL_VERSION(5, 13, 0)
+ #define S_KEY_my 131
+ #else
+ #error "internal error: missing definition of KEY_my (your perl is too old)"
+ #endif
+#endif
+
+
#define MY_PKG "Function::Parameters"
#define HINTK_KEYWORDS MY_PKG "/keywords"
-#define HINTK_NAME_ MY_PKG "/name:"
+#define HINTK_FLAGS_ MY_PKG "/flags:"
#define HINTK_SHIFT_ MY_PKG "/shift:"
#define HINTK_ATTRS_ MY_PKG "/attrs:"
-#define HAVE_PERL_VERSION(R, V, S) \
- (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
+#define DEFSTRUCT(T) typedef struct T T; struct T
-typedef struct {
- enum {
- FLAG_NAME_OPTIONAL = 1,
- FLAG_NAME_REQUIRED,
- FLAG_NAME_PROHIBITED
- } name;
+#define UV_BITS (sizeof (UV) * CHAR_BIT)
+
+enum {
+ FLAG_NAME_OK = 0x01,
+ FLAG_ANON_OK = 0x02,
+ FLAG_DEFAULT_ARGS = 0x04,
+ FLAG_CHECK_NARGS = 0x08,
+ FLAG_INVOCANT = 0x10,
+ FLAG_NAMED_PARAMS = 0x20
+};
+
+DEFSTRUCT(KWSpec) {
+ unsigned flags;
SV *shift;
SV *attrs;
-} Spec;
+};
static int (*next_keyword_plugin)(pTHX_ char *, STRLEN, OP **);
-static int kw_flags(pTHX_ const char *kw_ptr, STRLEN kw_len, Spec *spec) {
+static int kw_flags(pTHX_ const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
HV *hints;
SV *sv, **psv;
const char *p, *kw_active;
STRLEN kw_active_len;
- spec->name = 0;
+ spec->flags = 0;
spec->shift = sv_2mortal(newSVpvs(""));
spec->attrs = sv_2mortal(newSVpvs(""));
memcmp(kw_ptr, p, kw_len) == 0
) {
-#define FETCH_HINTK_INTO(NAME, PTR, LEN, X) do { \
+#define FETCH_HINTK_INTO(NAME, PTR, LEN, X) STMT_START { \
const char *fk_ptr_; \
STRLEN fk_len_; \
SV *fk_sv_; \
if (!((X) = hv_fetch(hints, fk_ptr_, fk_len_, 0))) { \
croak("%s: internal error: $^H{'%.*s'} not set", MY_PKG, (int)fk_len_, fk_ptr_); \
} \
-} while (0)
+} STMT_END
- FETCH_HINTK_INTO(NAME_, kw_ptr, kw_len, psv);
- spec->name = SvIV(*psv);
+ FETCH_HINTK_INTO(FLAGS_, kw_ptr, kw_len, psv);
+ spec->flags = SvIV(*psv);
FETCH_HINTK_INTO(SHIFT_, kw_ptr, kw_len, psv);
SvSetSV(spec->shift, *psv);
}
-#include "toke_on_crack.c.inc"
+static void free_ptr_op(pTHX_ void *vp) {
+ OP **pp = vp;
+ op_free(*pp);
+ Safefree(pp);
+}
+
+#define sv_eq_pvs(SV, S) my_sv_eq_pvn(aTHX_ SV, "" S "", sizeof (S) - 1)
+
+static int my_sv_eq_pvn(pTHX_ SV *sv, const char *p, STRLEN n) {
+ STRLEN sv_len;
+ const char *sv_p = SvPV(sv, sv_len);
+ return memcmp(sv_p, p, n) == 0;
+}
+
+
+#include "padop_on_crack.c.inc"
+
+
+enum {
+ MY_ATTR_LVALUE = 0x01,
+ MY_ATTR_METHOD = 0x02,
+ MY_ATTR_SPECIAL = 0x04
+};
+
+static void my_sv_cat_c(pTHX_ SV *sv, U32 c) {
+ char ds[UTF8_MAXBYTES + 1], *d;
+ d = uvchr_to_utf8(ds, c);
+ if (d - ds > 1) {
+ sv_utf8_upgrade(sv);
+ }
+ sv_catpvn(sv, ds, d - ds);
+}
+
+static bool my_is_uni_xidfirst(pTHX_ UV c) {
+ U8 tmpbuf[UTF8_MAXBYTES + 1];
+ uvchr_to_utf8(tmpbuf, c);
+ return is_utf8_xidfirst(tmpbuf);
+}
+
+static bool my_is_uni_xidcont(pTHX_ UV c) {
+ U8 tmpbuf[UTF8_MAXBYTES + 1];
+ uvchr_to_utf8(tmpbuf, c);
+ return is_utf8_xidcont(tmpbuf);
+}
+
+static SV *my_scan_word(pTHX_ bool allow_package) {
+ bool at_start, at_substart;
+ I32 c;
+ SV *sv = sv_2mortal(newSVpvs(""));
+ if (lex_bufutf8()) {
+ SvUTF8_on(sv);
+ }
+
+ at_start = at_substart = TRUE;
+ c = lex_peek_unichar(0);
+
+ while (c != -1) {
+ if (at_substart ? my_is_uni_xidfirst(aTHX_ c) : my_is_uni_xidcont(aTHX_ c)) {
+ lex_read_unichar(0);
+ my_sv_cat_c(aTHX_ sv, c);
+ at_substart = FALSE;
+ c = lex_peek_unichar(0);
+ } else if (allow_package && !at_substart && c == '\'') {
+ lex_read_unichar(0);
+ c = lex_peek_unichar(0);
+ if (!my_is_uni_xidfirst(aTHX_ c)) {
+ lex_stuff_pvs("'", 0);
+ break;
+ }
+ sv_catpvs(sv, "'");
+ at_substart = TRUE;
+ } else if (allow_package && (at_start || !at_substart) && c == ':') {
+ lex_read_unichar(0);
+ if (lex_peek_unichar(0) != ':') {
+ lex_stuff_pvs(":", 0);
+ break;
+ }
+ lex_read_unichar(0);
+ c = lex_peek_unichar(0);
+ if (!my_is_uni_xidfirst(aTHX_ c)) {
+ lex_stuff_pvs("::", 0);
+ break;
+ }
+ sv_catpvs(sv, "::");
+ at_substart = TRUE;
+ } else {
+ break;
+ }
+ at_start = FALSE;
+ }
+
+ return SvCUR(sv) ? sv : NULL;
+}
+
+static SV *my_scan_parens_tail(pTHX_ bool keep_backslash) {
+ I32 c, nesting;
+ SV *sv;
+ line_t start;
+
+ start = CopLINE(PL_curcop);
+
+ sv = sv_2mortal(newSVpvs(""));
+ if (lex_bufutf8()) {
+ SvUTF8_on(sv);
+ }
+ nesting = 0;
+ for (;;) {
+ c = lex_read_unichar(0);
+ if (c == EOF) {
+ CopLINE_set(PL_curcop, start);
+ return NULL;
+ }
-static int parse_fun(pTHX_ OP **pop, const char *keyword_ptr, STRLEN keyword_len, const Spec *spec) {
- SV *gen, *declarator, *params, *sv;
- line_t line_start;
- int saw_name, saw_colon;
+ if (c == '\\') {
+ c = lex_read_unichar(0);
+ if (c == EOF) {
+ CopLINE_set(PL_curcop, start);
+ return NULL;
+ }
+ if (keep_backslash || (c != '(' && c != ')')) {
+ sv_catpvs(sv, "\\");
+ }
+ } else if (c == '(') {
+ nesting++;
+ } else if (c == ')') {
+ if (!nesting) {
+ break;
+ }
+ nesting--;
+ }
+
+ my_sv_cat_c(aTHX_ sv, c);
+ }
+
+ return sv;
+}
+
+static void my_check_prototype(pTHX_ const SV *declarator, SV *proto) {
+ char *start, *r, *w, *end;
STRLEN len;
- char *s;
+
+ /* strip spaces */
+ start = SvPV(proto, len);
+ end = start + len;
+
+ for (w = r = start; r < end; r++) {
+ if (!isSPACE(*r)) {
+ *w++ = *r;
+ }
+ }
+ *w = '\0';
+ SvCUR_set(proto, w - start);
+ end = w;
+ len = end - start;
+
+ if (!ckWARN(WARN_ILLEGALPROTO)) {
+ return;
+ }
+
+ /* check for bad characters */
+ if (strspn(start, "$@%*;[]&\\_+") != len) {
+ SV *dsv = newSVpvs_flags("", SVs_TEMP);
+ warner(
+ packWARN(WARN_ILLEGALPROTO),
+ "Illegal character in prototype for %"SVf" : %s",
+ SVfARG(declarator),
+ SvUTF8(proto)
+ ? sv_uni_display(
+ dsv,
+ proto,
+ len,
+ UNI_DISPLAY_ISPRINT
+ )
+ : pv_pretty(dsv, start, len, 60, NULL, NULL,
+ PERL_PV_ESCAPE_NONASCII
+ )
+ );
+ return;
+ }
+
+ for (r = start; r < end; r++) {
+ switch (*r) {
+ default:
+ warner(
+ packWARN(WARN_ILLEGALPROTO),
+ "Illegal character in prototype for %"SVf" : %s",
+ SVfARG(declarator), r
+ );
+ return;
+
+ case '_':
+ if (r[1] && !strchr(";@%", *r)) {
+ warner(
+ packWARN(WARN_ILLEGALPROTO),
+ "Illegal character after '_' in prototype for %"SVf" : %s",
+ SVfARG(declarator), r
+ );
+ return;
+ }
+ break;
+
+ case '@':
+ case '%':
+ if (r[1]) {
+ warner(
+ packWARN(WARN_ILLEGALPROTO),
+ "prototype after '%c' for %"SVf": %s",
+ *r, SVfARG(declarator), r + 1
+ );
+ return;
+ }
+ break;
+
+ case '\\':
+ r++;
+ if (strchr("$@%&*", *r)) {
+ break;
+ }
+ if (*r == '[') {
+ r++;
+ for (; r < end && *r != ']'; r++) {
+ if (!strchr("$@%&*", *r)) {
+ break;
+ }
+ }
+ if (*r == ']' && r[-1] != '[') {
+ break;
+ }
+ }
+ warner(
+ packWARN(WARN_ILLEGALPROTO),
+ "Illegal character after '\\' in prototype for %"SVf" : %s",
+ SVfARG(declarator), r
+ );
+ return;
+
+ case '$':
+ case '*':
+ case '&':
+ case ';':
+ case '+':
+ break;
+ }
+ }
+}
+
+
+DEFSTRUCT(Param) {
+ SV *name;
+ PADOFFSET padoff;
+};
+
+DEFSTRUCT(ParamInit) {
+ Param param;
+ OP *init;
+};
+
+#define VEC(B) B ## _Vec
+
+#define DEFVECTOR(B) DEFSTRUCT(VEC(B)) { \
+ B (*data); \
+ size_t used, size; \
+}
+
+DEFVECTOR(Param);
+DEFVECTOR(ParamInit);
+
+#define DEFVECTOR_INIT(N, B) static void N(VEC(B) *p) { \
+ p->used = 0; \
+ p->size = 23; \
+ Newx(p->data, p->size, B); \
+} static void N(VEC(B) *)
+
+DEFSTRUCT(ParamSpec) {
+ Param invocant;
+ VEC(Param) positional_required;
+ VEC(ParamInit) positional_optional;
+ VEC(Param) named_required;
+ VEC(ParamInit) named_optional;
+ Param slurpy;
+ PADOFFSET rest_hash;
+};
+
+DEFVECTOR_INIT(pv_init, Param);
+DEFVECTOR_INIT(piv_init, ParamInit);
+
+static void p_init(Param *p) {
+ p->name = NULL;
+ p->padoff = NOT_IN_PAD;
+}
+
+static void ps_init(ParamSpec *ps) {
+ p_init(&ps->invocant);
+ pv_init(&ps->positional_required);
+ piv_init(&ps->positional_optional);
+ pv_init(&ps->named_required);
+ piv_init(&ps->named_optional);
+ p_init(&ps->slurpy);
+ ps->rest_hash = NOT_IN_PAD;
+}
+
+#define DEFVECTOR_EXTEND(N, B) static B (*N(VEC(B) *p)) { \
+ assert(p->used <= p->size); \
+ if (p->used == p->size) { \
+ const size_t n = p->size / 2 * 3 + 1; \
+ Renew(p->data, n, B); \
+ p->size = n; \
+ } \
+ return &p->data[p->used]; \
+} static B (*N(VEC(B) *))
+
+DEFVECTOR_EXTEND(pv_extend, Param);
+DEFVECTOR_EXTEND(piv_extend, ParamInit);
+
+#define DEFVECTOR_CLEAR(N, B, F) static void N(pTHX_ VEC(B) *p) { \
+ while (p->used) { \
+ p->used--; \
+ F(aTHX_ &p->data[p->used]); \
+ } \
+ Safefree(p->data); \
+ p->data = NULL; \
+ p->size = 0; \
+} static void N(pTHX_ VEC(B) *)
+
+static void p_clear(pTHX_ Param *p) {
+ p->name = NULL;
+ p->padoff = NOT_IN_PAD;
+}
+
+static void pi_clear(pTHX_ ParamInit *pi) {
+ p_clear(aTHX_ &pi->param);
+ if (pi->init) {
+ op_free(pi->init);
+ pi->init = NULL;
+ }
+}
+
+DEFVECTOR_CLEAR(pv_clear, Param, p_clear);
+DEFVECTOR_CLEAR(piv_clear, ParamInit, pi_clear);
+
+static void ps_clear(pTHX_ ParamSpec *ps) {
+ p_clear(aTHX_ &ps->invocant);
+
+ pv_clear(aTHX_ &ps->positional_required);
+ piv_clear(aTHX_ &ps->positional_optional);
+
+ pv_clear(aTHX_ &ps->named_required);
+ piv_clear(aTHX_ &ps->named_optional);
+
+ p_clear(aTHX_ &ps->slurpy);
+}
+
+static int ps_contains(pTHX_ const ParamSpec *ps, SV *sv) {
+ size_t i, lim;
+
+ if (ps->invocant.name && sv_eq(sv, ps->invocant.name)) {
+ return 1;
+ }
+
+ for (i = 0, lim = ps->positional_required.used; i < lim; i++) {
+ if (sv_eq(sv, ps->positional_required.data[i].name)) {
+ return 1;
+ }
+ }
+
+ for (i = 0, lim = ps->positional_optional.used; i < lim; i++) {
+ if (sv_eq(sv, ps->positional_optional.data[i].param.name)) {
+ return 1;
+ }
+ }
+
+ for (i = 0, lim = ps->named_required.used; i < lim; i++) {
+ if (sv_eq(sv, ps->named_required.data[i].name)) {
+ return 1;
+ }
+ }
+
+ for (i = 0, lim = ps->named_optional.used; i < lim; i++) {
+ if (sv_eq(sv, ps->named_optional.data[i].param.name)) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static void ps_free_void(pTHX_ void *p) {
+ ps_clear(aTHX_ p);
+ Safefree(p);
+}
+
+static int args_min(pTHX_ const ParamSpec *ps, const KWSpec *ks) {
+ int n = 0;
+ if (!ps) {
+ return SvTRUE(ks->shift) ? 1 : 0;
+ }
+ if (ps->invocant.name) {
+ n++;
+ }
+ n += ps->positional_required.used;
+ n += ps->named_required.used * 2;
+ return n;
+}
+
+static int args_max(const ParamSpec *ps) {
+ int n = 0;
+ if (!ps) {
+ return -1;
+ }
+ if (ps->invocant.name) {
+ n++;
+ }
+ n += ps->positional_required.used;
+ n += ps->positional_optional.used;
+ if (ps->named_required.used || ps->named_optional.used || ps->slurpy.name) {
+ n = -1;
+ }
+ return n;
+}
+
+static size_t count_positional_params(const ParamSpec *ps) {
+ return ps->positional_required.used + ps->positional_optional.used;
+}
+
+static size_t count_named_params(const ParamSpec *ps) {
+ return ps->named_required.used + ps->named_optional.used;
+}
+
+enum {
+ PARAM_INVOCANT = 0x01,
+ PARAM_NAMED = 0x02
+};
+
+/* *pinit must be NULL on entry.
+ * caller must free *pinit on error.
+ */
+static PADOFFSET parse_param(
+ pTHX_
+ const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
+ int *pflags, SV **pname, OP **pinit
+) {
+ I32 c;
+ char sigil;
+ SV *name;
+
+ assert(!*pinit);
+ *pflags = 0;
+
+ c = lex_peek_unichar(0);
+
+ if (c == ':') {
+ lex_read_unichar(0);
+ lex_read_space(0);
+
+ *pflags |= PARAM_NAMED;
+
+ c = lex_peek_unichar(0);
+ }
+
+ if (c == -1) {
+ croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
+ }
+ if (!(c == '$' || c == '@' || c == '%')) {
+ croak("In %"SVf": unexpected '%c' in parameter list (expecting a sigil)", SVfARG(declarator), (int)c);
+ }
+
+ sigil = c;
+
+ lex_read_unichar(0);
+ lex_read_space(0);
+
+ if (!(name = my_scan_word(aTHX_ FALSE))) {
+ croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
+ }
+ sv_insert(name, 0, 0, &sigil, 1);
+ *pname = name;
+
+ lex_read_space(0);
+ c = lex_peek_unichar(0);
+
+ if (c == '=') {
+ lex_read_unichar(0);
+ lex_read_space(0);
+
+
+ if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
+ param_spec->invocant.name = spec->shift;
+ param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
+ }
+
+ *pinit = parse_termexpr(0);
+
+ lex_read_space(0);
+ c = lex_peek_unichar(0);
+ }
+
+ if (c == ':') {
+ *pflags |= PARAM_INVOCANT;
+ lex_read_unichar(0);
+ lex_read_space(0);
+ } else if (c == ',') {
+ lex_read_unichar(0);
+ lex_read_space(0);
+ } else if (c != ')') {
+ if (c == -1) {
+ croak("In %"SVf": unterminated parameter list", SVfARG(declarator));
+ }
+ croak("In %"SVf": unexpected '%c' in parameter list (expecting ',')", SVfARG(declarator), (int)c);
+ }
+
+ return pad_add_name_sv(*pname, IF_HAVE_PERL_5_16(padadd_NO_DUP_CHECK, 0), NULL, NULL);
+}
+
+static OP *my_var_g(pTHX_ I32 type, I32 flags, PADOFFSET padoff) {
+ OP *var = newOP(type, flags);
+ var->op_targ = padoff;
+ return var;
+}
+
+static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
+ return my_var_g(aTHX_ OP_PADSV, flags, padoff);
+}
+
+static OP *mkhvelem(pTHX_ PADOFFSET h, OP *k) {
+ OP *hv = my_var_g(aTHX_ OP_PADHV, OPf_REF, h);
+ return newBINOP(OP_HELEM, 0, hv, k);
+}
+
+static OP *mkconstsv(pTHX_ SV *sv) {
+ return newSVOP(OP_CONST, 0, sv);
+}
+
+static OP *mkconstiv(pTHX_ IV i) {
+ return mkconstsv(aTHX_ newSViv(i));
+}
+
+static OP *mkconstpv(pTHX_ const char *p, size_t n) {
+ return mkconstsv(aTHX_ newSVpv(p, n));
+}
+
+#define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
+
+static int parse_fun(pTHX_ OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
+ ParamSpec *param_spec;
+ SV *declarator;
+ I32 floor_ix;
+ int save_ix;
+ SV *saw_name;
+ OP **prelude_sentinel;
+ SV *proto;
+ OP **attrs_sentinel, *body;
+ unsigned builtin_attrs;
I32 c;
- gen = sv_2mortal(newSVpvs("sub"));
declarator = sv_2mortal(newSVpvn(keyword_ptr, keyword_len));
- params = sv_2mortal(newSVpvs(""));
- line_start = CopLINE(PL_curcop);
lex_read_space(0);
+ builtin_attrs = 0;
+
/* function name */
- saw_name = 0;
- 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 = NULL;
+ if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ TRUE))) {
+
+ if (PL_parser->expect != XSTATE) {
+ /* bail out early so we don't predeclare $saw_name */
+ croak("In %"SVf": I was expecting a function body, not \"%"SVf"\"", SVfARG(declarator), SVfARG(saw_name));
+ }
+
sv_catpvs(declarator, " ");
- sv_catpvn(declarator, s, len);
- lex_read_to(s + len);
+ sv_catsv(declarator, saw_name);
+
+ if (
+ sv_eq_pvs(saw_name, "BEGIN") ||
+ sv_eq_pvs(saw_name, "END") ||
+ sv_eq_pvs(saw_name, "INIT") ||
+ sv_eq_pvs(saw_name, "CHECK") ||
+ sv_eq_pvs(saw_name, "UNITCHECK")
+ ) {
+ builtin_attrs |= MY_ATTR_SPECIAL;
+ }
+
lex_read_space(0);
- saw_name = 1;
- } else if (spec->name == FLAG_NAME_REQUIRED) {
- croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - s), s);
+ } else if (!(spec->flags & FLAG_ANON_OK)) {
+ croak("I was expecting a function name, not \"%.*s\"", (int)(PL_parser->bufend - PL_parser->bufptr), PL_parser->bufptr);
} else {
sv_catpvs(declarator, " (anon)");
}
+ /* we're a subroutine declaration */
+ floor_ix = start_subparse(FALSE, saw_name ? 0 : CVf_ANON);
+ SAVEFREESV(PL_compcv);
+
+ /* create outer block: '{' */
+ save_ix = S_block_start(aTHX_ TRUE);
+
+ /* initialize synthetic optree */
+ Newx(prelude_sentinel, 1, OP *);
+ *prelude_sentinel = NULL;
+ SAVEDESTRUCTOR_X(free_ptr_op, prelude_sentinel);
+
/* parameters */
+ param_spec = NULL;
+
c = lex_peek_unichar(0);
if (c == '(') {
- SV *saw_slurpy = NULL;
+ OP **init_sentinel;
+
+ Newx(init_sentinel, 1, OP *);
+ *init_sentinel = NULL;
+ SAVEDESTRUCTOR_X(free_ptr_op, init_sentinel);
+
+ Newx(param_spec, 1, ParamSpec);
+ ps_init(param_spec);
+ SAVEDESTRUCTOR_X(ps_free_void, param_spec);
lex_read_unichar(0);
lex_read_space(0);
- for (;;) {
- c = lex_peek_unichar(0);
- if (c == '$' || c == '@' || c == '%') {
- sv_catpvf(params, "%c", (int)c);
- lex_read_unichar(0);
- lex_read_space(0);
+ while ((c = lex_peek_unichar(0)) != ')') {
+ int flags;
+ SV *name;
+ char sigil;
+ PADOFFSET padoff;
- s = PL_parser->bufptr;
- if (!(len = S_scan_word(aTHX_ s, FALSE))) {
- croak("In %"SVf": missing identifier", SVfARG(declarator));
+ padoff = parse_param(aTHX_ declarator, spec, param_spec, &flags, &name, init_sentinel);
+
+ S_intro_my(aTHX);
+
+ sigil = SvPV_nolen(name)[0];
+
+ /* internal consistency */
+ if (flags & PARAM_NAMED) {
+ if (flags & PARAM_INVOCANT) {
+ croak("In %"SVf": invocant %"SVf" can't be a named parameter", SVfARG(declarator), SVfARG(name));
}
- if (saw_slurpy) {
- croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%c%.*s\"", SVfARG(declarator), SVfARG(saw_slurpy), (int)c, (int)len, s);
+ if (sigil != '$') {
+ croak("In %"SVf": named parameter %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
}
- if (c != '$') {
- saw_slurpy = sv_2mortal(newSVpvf("%c%.*s", (int)c, (int)len, s));
+ } else if (flags & PARAM_INVOCANT) {
+ if (*init_sentinel) {
+ croak("In %"SVf": invocant %"SVf" can't have a default value", SVfARG(declarator), SVfARG(name));
}
- sv_catpvn(params, s, len);
- sv_catpvs(params, ",");
- lex_read_to(s + len);
- lex_read_space(0);
+ if (sigil != '$') {
+ croak("In %"SVf": invocant %"SVf" can't be a%s", SVfARG(declarator), SVfARG(name), sigil == '@' ? "n array" : " hash");
+ }
+ } else if (sigil != '$' && *init_sentinel) {
+ croak("In %"SVf": %s %"SVf" can't have a default value", SVfARG(declarator), sigil == '@' ? "array" : "hash", SVfARG(name));
+ }
- c = lex_peek_unichar(0);
- if (c == ',') {
- lex_read_unichar(0);
- lex_read_space(0);
- continue;
+ /* external constraints */
+ if (param_spec->slurpy.name) {
+ croak("In %"SVf": I was expecting \")\" after \"%"SVf"\", not \"%"SVf"\"", SVfARG(declarator), SVfARG(param_spec->slurpy.name), SVfARG(name));
+ }
+ if (sigil != '$') {
+ assert(!*init_sentinel);
+ param_spec->slurpy.name = name;
+ param_spec->slurpy.padoff = padoff;
+ continue;
+ }
+
+ if (!(flags & PARAM_NAMED) && count_named_params(param_spec)) {
+ croak("In %"SVf": positional parameter %"SVf" can't appear after named parameter %"SVf"", SVfARG(declarator), SVfARG(name), SVfARG((param_spec->named_required.used ? param_spec->named_required.data[0] : param_spec->named_optional.data[0].param).name));
+ }
+
+ if (flags & PARAM_INVOCANT) {
+ if (param_spec->invocant.name) {
+ croak("In %"SVf": invalid double invocants %"SVf", %"SVf"", SVfARG(declarator), SVfARG(param_spec->invocant.name), SVfARG(name));
}
+ if (count_positional_params(param_spec) || count_named_params(param_spec)) {
+ croak("In %"SVf": invocant %"SVf" must be first in parameter list", SVfARG(declarator), SVfARG(name));
+ }
+ if (!(spec->flags & FLAG_INVOCANT)) {
+ croak("In %"SVf": invocant %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
+ }
+ param_spec->invocant.name = name;
+ param_spec->invocant.padoff = padoff;
+ continue;
}
- if (c == ')') {
- lex_read_unichar(0);
- lex_read_space(0);
- break;
+ if (*init_sentinel && !(spec->flags & FLAG_DEFAULT_ARGS)) {
+ croak("In %"SVf": default argument for %"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
+ }
+
+ if (ps_contains(aTHX_ param_spec, name)) {
+ croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(name));
+ }
+
+ if (flags & PARAM_NAMED) {
+ if (!(spec->flags & FLAG_NAMED_PARAMS)) {
+ croak("In %"SVf": named parameter :%"SVf" not allowed here", SVfARG(declarator), SVfARG(name));
+ }
+
+ if (*init_sentinel) {
+ ParamInit *pi = piv_extend(¶m_spec->named_optional);
+ pi->param.name = name;
+ pi->param.padoff = padoff;
+ pi->init = *init_sentinel;
+ *init_sentinel = NULL;
+ param_spec->named_optional.used++;
+ } else {
+ if (param_spec->positional_optional.used) {
+ croak("In %"SVf": can't combine optional positional (%"SVf") and required named (%"SVf") parameters", SVfARG(declarator), SVfARG(param_spec->positional_optional.data[0].param.name), SVfARG(name));
+ }
+
+ Param *p = pv_extend(¶m_spec->named_required);
+ p->name = name;
+ p->padoff = padoff;
+ param_spec->named_required.used++;
+ }
+ } else {
+ if (*init_sentinel || param_spec->positional_optional.used) {
+ ParamInit *pi = piv_extend(¶m_spec->positional_optional);
+ pi->param.name = name;
+ pi->param.padoff = padoff;
+ pi->init = *init_sentinel;
+ *init_sentinel = NULL;
+ param_spec->positional_optional.used++;
+ } else {
+ Param *p = pv_extend(¶m_spec->positional_required);
+ p->name = name;
+ p->padoff = padoff;
+ param_spec->positional_required.used++;
+ }
}
- if (c == -1) {
- croak("In %"SVf": unexpected EOF in parameter list", SVfARG(declarator));
+ }
+ lex_read_unichar(0);
+ lex_read_space(0);
+ *init_sentinel = NULL;
+
+ if (!param_spec->invocant.name && SvTRUE(spec->shift)) {
+ if (ps_contains(aTHX_ param_spec, spec->shift)) {
+ croak("In %"SVf": %"SVf" can't appear twice in the same parameter list", SVfARG(declarator), SVfARG(spec->shift));
}
- croak("In %"SVf": unexpected '%c' in parameter list", SVfARG(declarator), (int)c);
+
+ param_spec->invocant.name = spec->shift;
+ param_spec->invocant.padoff = pad_add_name_sv(param_spec->invocant.name, 0, NULL, NULL);
}
}
/* prototype */
- saw_colon = 0;
+ proto = NULL;
c = lex_peek_unichar(0);
if (c == ':') {
lex_read_unichar(0);
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)) {
- croak("In %"SVf": malformed prototype", SVfARG(declarator));
+ lex_read_unichar(0);
+ if (!(proto = my_scan_parens_tail(aTHX_ FALSE))) {
+ croak("In %"SVf": prototype not terminated", SVfARG(declarator));
}
- sv_catsv(gen, sv);
+ my_check_prototype(aTHX_ declarator, proto);
lex_read_space(0);
+ c = lex_peek_unichar(0);
}
}
- if (saw_name) {
- len = SvCUR(gen);
- s = SvGROW(gen, (len + 1) * 2);
- sv_catpvs(gen, ";");
- sv_catpvn(gen, s, len);
- }
-
/* attributes */
- if (SvTRUE(spec->attrs)) {
- sv_catsv(gen, spec->attrs);
- }
+ Newx(attrs_sentinel, 1, OP *);
+ *attrs_sentinel = NULL;
+ SAVEDESTRUCTOR_X(free_ptr_op, attrs_sentinel);
+
+ if (c == ':' || c == '{') /* '}' - hi, vim */ {
+
+ /* 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": malformed attribute argument list", SVfARG(declarator));
+
+ for (;;) {
+ SV *attr;
+
+ if (!(attr = my_scan_word(aTHX_ FALSE))) {
+ break;
}
- sv_catsv(gen, sv);
+
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;
+ lex_read_unichar(0);
+ if (!(sv = my_scan_parens_tail(aTHX_ TRUE))) {
+ croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
+ }
+ sv_catpvs(attr, "(");
+ sv_catsv(attr, sv);
+ sv_catpvs(attr, ")");
+
+ lex_read_space(0);
+ c = lex_peek_unichar(0);
+ }
+
+ if (attr) {
+ *attrs_sentinel = op_append_elem(OP_LIST, *attrs_sentinel, mkconstsv(aTHX_ 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 != '{') {
+ if (c != '{') /* '}' - hi, vim */ {
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;");
+
+ /* surprise predeclaration! */
+ if (saw_name) {
+ /* 'sub NAME (PROTO);' to make name/proto known to perl before it
+ starts parsing the body */
+ const I32 sub_ix = start_subparse(FALSE, 0);
+ SAVEFREESV(PL_compcv);
+
+ SvREFCNT_inc_simple_void(PL_compcv);
+
+ newATTRSUB(
+ sub_ix,
+ mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(saw_name)),
+ proto ? mkconstsv(aTHX_ SvREFCNT_inc_simple_NN(proto)) : NULL,
+ NULL,
+ NULL
+ );
+ }
+
+ if (builtin_attrs & MY_ATTR_LVALUE) {
+ CvLVALUE_on(PL_compcv);
+ }
+ if (builtin_attrs & MY_ATTR_METHOD) {
+ CvMETHOD_on(PL_compcv);
}
- if (SvCUR(params)) {
- sv_catpvs(gen, "my(");
- sv_catsv(gen, params);
- sv_catpvs(gen, ")=@_;");
+ 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;
+ /* check number of arguments */
+ if (spec->flags & FLAG_CHECK_NARGS) {
+ int amin, amax;
+ size_t named;
+
+ amin = args_min(aTHX_ param_spec, spec);
+ if (amin > 0) {
+ OP *chk, *cond, *err, *croak;
+
+ err = mkconstsv(aTHX_ newSVpvf("Not enough arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amin));
+ err = newBINOP(
+ OP_CONCAT, 0,
+ err,
+ newAVREF(newGVOP(OP_GV, 0, PL_defgv))
+ );
+ err = newBINOP(
+ OP_CONCAT, 0,
+ err,
+ mkconstpvs(")")
+ );
+
+ 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)),
+ mkconstiv(aTHX_ amin));
+ chk = newLOGOP(OP_AND, 0, cond, err);
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
+ }
+
+ amax = args_max(param_spec);
+ if (amax >= 0) {
+ OP *chk, *cond, *err, *croak;
+
+ err = mkconstsv(aTHX_ newSVpvf("Too many arguments for %"SVf" (expected %d, got ", SVfARG(declarator), amax));
+ err = newBINOP(
+ OP_CONCAT, 0,
+ err,
+ newAVREF(newGVOP(OP_GV, 0, PL_defgv))
+ );
+ err = newBINOP(
+ OP_CONCAT, 0,
+ err,
+ mkconstpvs(")")
+ );
+
+ 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)),
+ mkconstiv(aTHX_ amax)
+ );
+ chk = newLOGOP(OP_AND, 0, cond, err);
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
+ }
+
+ if (param_spec && (count_named_params(param_spec) || (param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%'))) {
+ OP *chk, *cond, *err, *croak;
+ const UV fixed = count_positional_params(param_spec) + !!param_spec->invocant.name;
+
+ err = mkconstsv(aTHX_ newSVpvf("Odd number of paired 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));
+
+ cond = newBINOP(OP_GT, 0,
+ newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
+ mkconstiv(aTHX_ fixed));
+ cond = newLOGOP(OP_AND, 0,
+ cond,
+ newBINOP(OP_MODULO, 0,
+ fixed
+ ? newBINOP(OP_SUBTRACT, 0,
+ newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
+ mkconstiv(aTHX_ fixed))
+ : newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
+ mkconstiv(aTHX_ 2)));
+ chk = newLOGOP(OP_AND, 0, cond, err);
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, chk));
+ }
}
- /* 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);
+ if (!param_spec) {
+ /* my $invocant = shift; */
+ if (SvTRUE(spec->shift)) {
+ OP *var;
+
+ var = my_var(
+ aTHX_
+ OPf_MOD | (OPpLVAL_INTRO << 8),
+ pad_add_name_sv(spec->shift, 0, NULL, NULL)
+ );
+ var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
+ }
+ } else {
+ /* my $invocant = shift; */
+ if (param_spec->invocant.name) {
+ OP *var;
+
+ var = my_var(
+ aTHX_
+ OPf_MOD | (OPpLVAL_INTRO << 8),
+ param_spec->invocant.padoff
+ );
+ var = newASSIGNOP(OPf_STACKED, var, 0, newOP(OP_SHIFT, 0));
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
+ }
+
+ /* my (...) = @_; */
+ {
+ OP *lhs;
+ size_t i, lim;
+
+ lhs = NULL;
+
+ for (i = 0, lim = param_spec->positional_required.used; i < lim; i++) {
+ OP *const var = my_var(
+ aTHX_
+ OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
+ param_spec->positional_required.data[i].padoff
+ );
+ lhs = op_append_elem(OP_LIST, lhs, var);
+ }
+
+ for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
+ OP *const var = my_var(
+ aTHX_
+ OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
+ param_spec->positional_optional.data[i].param.padoff
+ );
+ lhs = op_append_elem(OP_LIST, lhs, var);
+ }
+
+ {
+ PADOFFSET padoff;
+ I32 type;
+ bool slurpy_hash;
+
+ /*
+ * cases:
+ * 1) no named params
+ * 1.1) slurpy
+ * => put it in
+ * 1.2) no slurpy
+ * => nop
+ * 2) named params
+ * 2.1) no slurpy
+ * => synthetic %{rest}
+ * 2.2) slurpy is a hash
+ * => put it in
+ * 2.3) slurpy is an array
+ * => synthetic %{rest}
+ * remember to declare array later
+ */
+
+ slurpy_hash = param_spec->slurpy.name && SvPV_nolen(param_spec->slurpy.name)[0] == '%';
+ if (!count_named_params(param_spec)) {
+ if (param_spec->slurpy.name) {
+ padoff = param_spec->slurpy.padoff;
+ type = slurpy_hash ? OP_PADHV : OP_PADAV;
+ } else {
+ padoff = NOT_IN_PAD;
+ type = OP_PADSV;
+ }
+ } else if (slurpy_hash) {
+ padoff = param_spec->slurpy.padoff;
+ type = OP_PADHV;
+ } else {
+ padoff = param_spec->rest_hash = pad_add_name_pvs("%{rest}", 0, NULL, NULL);
+ type = OP_PADHV;
+ }
+
+ if (padoff != NOT_IN_PAD) {
+ OP *const var = my_var_g(
+ aTHX_
+ type,
+ OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
+ padoff
+ );
+
+ lhs = op_append_elem(OP_LIST, lhs, var);
+
+ if (type == OP_PADHV) {
+ param_spec->rest_hash = padoff;
+ }
+ }
+ }
+
+ if (lhs) {
+ OP *rhs;
+ lhs->op_flags |= OPf_PARENS;
+ rhs = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
+
+ *prelude_sentinel = op_append_list(
+ OP_LINESEQ, *prelude_sentinel,
+ newSTATEOP(
+ 0, NULL,
+ newASSIGNOP(OPf_STACKED, lhs, 0, rhs)
+ )
+ );
+ }
+ }
+
+ /* default positional arguments */
+ {
+ size_t i, lim, req;
+ OP *nest;
+
+ nest = NULL;
+
+ req = param_spec->positional_required.used;
+ for (i = 0, lim = param_spec->positional_optional.used; i < lim; i++) {
+ ParamInit *cur = ¶m_spec->positional_optional.data[i];
+ OP *var, *cond;
+
+ cond = newBINOP(
+ OP_LT, 0,
+ newAVREF(newGVOP(OP_GV, 0, PL_defgv)),
+ mkconstiv(aTHX_ req + i + 1)
+ );
+
+ var = my_var(aTHX_ 0, cur->param.padoff);
+
+ nest = op_append_list(
+ OP_LINESEQ, nest,
+ newASSIGNOP(OPf_STACKED, var, 0, cur->init)
+ );
+ cur->init = NULL;
+ nest = newCONDOP(
+ 0,
+ cond,
+ nest,
+ NULL
+ );
+ }
+
+ *prelude_sentinel = op_append_list(
+ OP_LINESEQ, *prelude_sentinel,
+ nest
+ );
+ }
+
+ /* named parameters */
+ if (count_named_params(param_spec)) {
+ size_t i, lim;
+
+ assert(param_spec->rest_hash != NOT_IN_PAD);
+
+ for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
+ Param *cur = ¶m_spec->named_required.data[i];
+ size_t n;
+ char *p = SvPV(cur->name, n);
+ OP *var, *cond;
+
+ cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
+
+ if (spec->flags & FLAG_CHECK_NARGS) {
+ OP *croak, *msg;
+
+ var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
+ var = newUNOP(OP_DELETE, 0, var);
+
+ msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": missing named parameter: %.*s", SVfARG(declarator), (int)(n - 1), p + 1));
+ croak = newCVREF(
+ OPf_WANT_SCALAR,
+ newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
+ );
+ croak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, croak));
+
+ cond = newUNOP(OP_EXISTS, 0, cond);
+
+ cond = newCONDOP(0, cond, var, croak);
+ }
+
+ var = my_var(
+ aTHX_
+ OPf_MOD | (OPpLVAL_INTRO << 8),
+ cur->padoff
+ );
+ var = newASSIGNOP(OPf_STACKED, var, 0, cond);
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
+ }
+
+ for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
+ ParamInit *cur = ¶m_spec->named_optional.data[i];
+ size_t n;
+ char *p = SvPV(cur->param.name, n);
+ OP *var, *cond;
+
+ var = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
+ var = newUNOP(OP_DELETE, 0, var);
+
+ cond = mkhvelem(aTHX_ param_spec->rest_hash, mkconstpv(aTHX_ p + 1, n - 1));
+ cond = newUNOP(OP_EXISTS, 0, cond);
+
+ cond = newCONDOP(0, cond, var, cur->init);
+ cur->init = NULL;
+
+ var = my_var(
+ aTHX_
+ OPf_MOD | (OPpLVAL_INTRO << 8),
+ cur->param.padoff
+ );
+ var = newASSIGNOP(OPf_STACKED, var, 0, cond);
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
+ }
+
+ if (!param_spec->slurpy.name) {
+ if (spec->flags & FLAG_CHECK_NARGS) {
+ /* croak if %{rest} */
+ OP *croak, *cond, *keys, *msg;
+
+ keys = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
+ keys = newLISTOP(OP_SORT, 0, newOP(OP_PUSHMARK, 0), keys);
+ {
+ OP *first, *mid, *last;
+
+ last = keys;
+
+ mid = mkconstpvs(", ");
+ mid->op_sibling = last;
+
+ first = newOP(OP_PUSHMARK, 0);
+
+ keys = newLISTOP(OP_JOIN, 0, first, mid);
+ keys->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
+ ((LISTOP *)keys)->op_last = last;
+ }
+
+ msg = mkconstsv(aTHX_ newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
+ msg = newBINOP(OP_CONCAT, 0, msg, keys);
+
+ croak = newCVREF(
+ OPf_WANT_SCALAR,
+ newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV))
+ );
+ croak = newUNOP(OP_ENTERSUB, OPf_STACKED, op_append_elem(OP_LIST, msg, croak));
+
+ cond = newUNOP(OP_KEYS, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
+ croak = newCONDOP(0, cond, croak, NULL);
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, croak));
+ } else {
+ OP *clear;
+
+ clear = newASSIGNOP(
+ OPf_STACKED,
+ my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
+ 0,
+ newNULLLIST()
+ );
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear));
+ }
+ } else if (param_spec->slurpy.padoff != param_spec->rest_hash) {
+ OP *var, *clear;
+
+ assert(SvPV_nolen(param_spec->slurpy.name)[0] == '@');
+
+ var = my_var_g(
+ aTHX_
+ OP_PADAV,
+ OPf_MOD | (OPpLVAL_INTRO << 8),
+ param_spec->slurpy.padoff
+ );
+
+ var = newASSIGNOP(OPf_STACKED, var, 0, my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash));
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, var));
+
+ clear = newASSIGNOP(
+ OPf_STACKED,
+ my_var_g(aTHX_ OP_PADHV, 0, param_spec->rest_hash),
+ 0,
+ newNULLLIST()
+ );
+
+ *prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear));
+ }
+ }
+ }
+
+ /* finally let perl parse the actual subroutine body */
+ body = parse_block(0);
+
+ /* 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;
+ *attrs_sentinel = NULL;
+ SvREFCNT_inc_simple_void(PL_compcv);
+
+ /* close outer block: '}' */
+ S_block_end(aTHX_ save_ix, body);
+
+ 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 = newOP(OP_NULL, 0);
+ 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) {
- Spec spec;
+ KWSpec spec;
int ret;
SAVETMPS;
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
WARNINGS_ENABLE {
HV *const stash = gv_stashpvs(MY_PKG, GV_ADD);
/**/
- newCONSTSUB(stash, "FLAG_NAME_OPTIONAL", newSViv(FLAG_NAME_OPTIONAL));
- newCONSTSUB(stash, "FLAG_NAME_REQUIRED", newSViv(FLAG_NAME_REQUIRED));
- newCONSTSUB(stash, "FLAG_NAME_PROHIBITED", newSViv(FLAG_NAME_PROHIBITED));
+ newCONSTSUB(stash, "FLAG_NAME_OK", newSViv(FLAG_NAME_OK));
+ newCONSTSUB(stash, "FLAG_ANON_OK", newSViv(FLAG_ANON_OK));
+ newCONSTSUB(stash, "FLAG_DEFAULT_ARGS", newSViv(FLAG_DEFAULT_ARGS));
+ newCONSTSUB(stash, "FLAG_CHECK_NARGS", newSViv(FLAG_CHECK_NARGS));
+ newCONSTSUB(stash, "FLAG_INVOCANT", newSViv(FLAG_INVOCANT));
+ newCONSTSUB(stash, "FLAG_NAMED_PARAMS", newSViv(FLAG_NAMED_PARAMS));
newCONSTSUB(stash, "HINTK_KEYWORDS", newSVpvs(HINTK_KEYWORDS));
- newCONSTSUB(stash, "HINTK_NAME_", newSVpvs(HINTK_NAME_));
- newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
- newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
+ newCONSTSUB(stash, "HINTK_FLAGS_", newSVpvs(HINTK_FLAGS_));
+ newCONSTSUB(stash, "HINTK_SHIFT_", newSVpvs(HINTK_SHIFT_));
+ newCONSTSUB(stash, "HINTK_ATTRS_", newSVpvs(HINTK_ATTRS_));
/**/
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);
projects / p5sagit/Function-Parameters.git / blobdiff