From: Lukas Mai <l.mai@web.de>
Date: Thu, 1 Nov 2012 12:40:18 +0000 (+0100)
Subject: prune dead code
X-Git-Tag: v1.00~4^2
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=b939b4b60e567080bb7f9efb9dfc8b52b26b8197;p=p5sagit%2FFunction-Parameters.git

prune dead code
---

diff --git a/Parameters.xs b/Parameters.xs
index 193001e..d27c82c 100644
--- a/Parameters.xs
+++ b/Parameters.xs
@@ -693,56 +693,6 @@ static OP *my_var(pTHX_ I32 flags, PADOFFSET padoff) {
 	return my_var_g(aTHX_ OP_PADSV, flags, padoff);
 }
 
-static SV *mkbits1(pTHX_ size_t n) {
-	size_t bytes = n / 8, bits = n % 8;
-	SV *sv = newSV(bytes + !!bits);
-	char *p = SvPVX(sv), *q = p;
-	while (bytes--) {
-		*p++ = '\xff';
-	}
-	if (bits) {
-		*p++ = (1u << bits) - 1;
-	}
-	*p = '\0';
-	SvCUR_set(sv, p - q);
-	SvPOK_on(sv);
-	return sv;
-}
-
-static OP *mkvecbits(pTHX_ PADOFFSET padoff, size_t i) {
-	OP *first, *mid, *last, *vec;
-
-	last = newSVOP(OP_CONST, 0, newSViv(1));
-	first = last;
-
-	mid = newSVOP(OP_CONST, 0, newSViv(i));
-	mid->op_sibling = first;
-	first = mid;
-
-	mid = my_var(aTHX_ 0, padoff);
-	mid->op_sibling = first;
-
-	first = newOP(OP_PUSHMARK, 0);
-
-	vec = newLISTOP(OP_VEC, 0, first, mid);
-	vec->op_targ = pad_alloc(OP_VEC, SVs_PADTMP);
-	((LISTOP *)vec)->op_last = last;
-	op_null(((LISTOP *)vec)->op_first);
-
-	return vec;
-}
-
-static OP *mkargselem(pTHX_ OP *index) {
-	OP *args = newAVREF(newGVOP(OP_GV, 0, PL_defgv));
-	args->op_flags |= OPf_REF;
-
-	return newBINOP(OP_AELEM, 0, args, index);
-}
-
-static OP *mkargselemv(pTHX_ PADOFFSET v) {
-	return mkargselem(aTHX_ my_var(aTHX_ 0, v));
-}
-
 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);
@@ -1480,413 +1430,6 @@ static int parse_fun(pTHX_ OP **pop, const char *keyword_ptr, STRLEN keyword_len
 				*prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, newSTATEOP(0, NULL, clear));
 			}
 		}
-
-		if (count_named_params(param_spec) && 0) {
-			int nameblock_ix;
-			OP *nameblock;
-			PADOFFSET vb, vc, vi, vk;
-			int vb_is_str, vc_is_str;
-
-			{
-				OP *lhs;
-				size_t i, lim;
-
-				lhs = NULL;
-
-				for (i = 0, lim = param_spec->named_required.used; i < lim; i++) {
-					OP *const var = my_var(
-						aTHX_
-						OPf_MOD | OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
-						param_spec->named_required.data[i].padoff
-					);
-					lhs = op_append_elem(OP_LIST, lhs, var);
-				}
-
-				for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
-					OP *const var = my_var(
-						aTHX_
-						OPf_MOD | OPf_WANT_LIST | (OPpLVAL_INTRO << 8),
-						param_spec->named_optional.data[i].param.padoff
-					);
-					lhs = op_append_elem(OP_LIST, lhs, var);
-				}
-
-				lhs->op_flags |= OPf_PARENS;
-				*prelude_sentinel = op_append_list(
-					OP_LINESEQ, *prelude_sentinel,
-					lhs
-				);
-			}
-
-			nameblock = NULL;
-			nameblock_ix = S_block_start(aTHX_ TRUE);
-
-			{
-				OP *decl, *var;
-
-				decl = NULL;
-
-				vb_is_str = param_spec->named_required.used > UV_BITS;
-				if (!param_spec->named_required.used || !(spec->flags & FLAG_CHECK_NARGS)) {
-					vb = 0;
-				} else {
-					var = newOP(OP_PADSV, OPf_MOD | (OPpLVAL_INTRO << 8));
-					var->op_targ = vb = pad_add_name_pvs("$__B", 0, NULL, NULL);
-					var = newASSIGNOP(OPf_STACKED, var, 0, newSVOP(OP_CONST, 0, vb_is_str ? newSVpvs("") : newSVuv(0)));
-					decl = op_append_list(OP_LINESEQ, decl, newSTATEOP(0, NULL, var));
-				}
-
-				vc_is_str = param_spec->named_optional.used > UV_BITS;
-				if (!param_spec->named_optional.used) {
-					vc = 0;
-				} else {
-					var = newOP(OP_PADSV, OPf_MOD | (OPpLVAL_INTRO << 8));
-					var->op_targ = vc = pad_add_name_pvs("$__C", 0, NULL, NULL);
-					var = newASSIGNOP(OPf_STACKED, var, 0, newSVOP(OP_CONST, 0, vc_is_str ? newSVpvs("") : newSVuv(0)));
-					decl = op_append_list(OP_LINESEQ, decl, newSTATEOP(0, NULL, var));
-				}
-
-				var = newOP(OP_PADSV, OPf_MOD | (OPpLVAL_INTRO << 8));
-				var->op_targ = vk = pad_add_name_pvs("$__K", 0, NULL, NULL);
-				decl = op_append_list(OP_LINESEQ, decl, newSTATEOP(0, NULL, var));
-
-				var = newOP(OP_PADSV, OPf_MOD | (OPpLVAL_INTRO << 8));
-				var->op_targ = vi = pad_add_name_pvs("$__I", 0, NULL, NULL);
-				var = newASSIGNOP(OPf_STACKED, var, 0, newSVOP(OP_CONST, 0, newSViv(count_positional_params(param_spec))));
-				decl = op_append_list(OP_LINESEQ, decl, newSTATEOP(0, NULL, var));
-
-				nameblock = op_append_list(OP_LINESEQ, nameblock, decl);
-			}
-
-			{
-				OP *loop;
-
-				loop = NULL;
-
-				loop = op_append_list(
-					OP_LINESEQ,
-					loop,
-					newSTATEOP(
-						0, NULL,
-						newASSIGNOP(
-							OPf_STACKED,
-							my_var(aTHX_ 0, vk),
-							0,
-							mkargselemv(aTHX_ vi)
-						)
-					)
-				);
-
-				{
-					OP *nest;
-					size_t i;
-
-					if (param_spec->slurpy.name) {
-						if (SvPV_nolen(param_spec->slurpy.name)[0] == '@') {
-							OP *first, *mid, *last;
-
-							last = mkargselem(
-								aTHX_
-								newBINOP(
-									OP_ADD, 0,
-									my_var(aTHX_ 0, vi),
-									newSVOP(OP_CONST, 0, newSViv(1))
-								)
-							);
-							mid = last;
-
-							first = my_var(aTHX_ 0, vk);
-							first->op_sibling = mid;
-							mid = first;
-
-							first = my_var_g(aTHX_ OP_PADAV, 0, param_spec->slurpy.padoff);
-							first->op_sibling = mid;
-							mid = first;
-
-							first = newOP(OP_PUSHMARK, 0);
-							nest = newLISTOP(OP_PUSH, 0, first, mid);
-							nest->op_targ = pad_alloc(OP_PUSH, SVs_PADTMP);
-							((LISTOP *)nest)->op_last = last;
-						} else {
-							nest = newASSIGNOP(
-								OPf_STACKED,
-								newBINOP(
-									OP_HELEM, 0,
-									my_var_g(aTHX_ OP_PADHV, 0, param_spec->slurpy.padoff),
-									my_var(aTHX_ 0, vk)
-								),
-								0,
-								mkargselem(
-									aTHX_
-									newBINOP(
-										OP_ADD, 0,
-										my_var(aTHX_ 0, vi),
-										newSVOP(OP_CONST, 0, newSViv(1))
-									)
-								)
-							);
-						}
-					} else if (spec->flags & FLAG_CHECK_NARGS) {
-						OP *err, *croak;
-
-						err = newSVOP(OP_CONST, 0,
-						              newSVpvf("In %"SVf": no such named parameter: ", SVfARG(declarator)));
-						err = newBINOP(
-							OP_CONCAT, 0,
-							err,
-							my_var(aTHX_ 0, vk)
-						);
-
-						croak = newCVREF(OPf_WANT_SCALAR,
-						                 newGVOP(OP_GV, 0, gv_fetchpvs("Carp::croak", 0, SVt_PVCV)));
-						nest = newUNOP(OP_ENTERSUB, OPf_STACKED,
-						               op_append_elem(OP_LIST, err, croak));
-					} else {
-						nest = NULL;
-					}
-
-					for (i = param_spec->named_optional.used; i--; ) {
-						Param *cur = &param_spec->named_optional.data[i].param;
-						size_t dn;
-						char *dp = SvPV(cur->name, dn);
-						OP *vec;
-
-						if (!(spec->flags & FLAG_CHECK_NARGS)) {
-							vec = NULL;
-						} else if (vc_is_str) {
-							vec = newASSIGNOP(
-								OPf_STACKED,
-								mkvecbits(aTHX_ vc, i),
-								0,
-								newSVOP(OP_CONST, 0, newSViv(1))
-							);
-						} else {
-							vec = newASSIGNOP(
-								OPf_STACKED,
-								my_var(aTHX_ 0, vc),
-								OP_BIT_OR,
-								newSVOP(OP_CONST, 0, newSVuv((UV)1 << i))
-							);
-						}
-
-						nest = newCONDOP(
-							0,
-							newBINOP(
-								OP_SEQ, 0,
-								my_var(aTHX_ 0, vk),
-								newSVOP(OP_CONST, 0, newSVpvn_utf8(dp + 1, dn - 1, SvUTF8(cur->name)))
-							),
-							op_append_list(
-								OP_LINESEQ,
-								newASSIGNOP(
-									OPf_STACKED,
-									my_var(aTHX_ 0, cur->padoff),
-									0,
-									mkargselem(
-										aTHX_
-										newBINOP(
-											OP_ADD, 0,
-											my_var(aTHX_ 0, vi),
-											newSVOP(OP_CONST, 0, newSViv(1))
-										)
-									)
-								),
-								vec
-							),
-							nest
-						);
-					}
-
-					for (i = param_spec->named_required.used; i--; ) {
-						Param *cur = &param_spec->named_required.data[i];
-						size_t dn;
-						char *dp = SvPV(cur->name, dn);
-						OP *vec;
-
-						if (!(spec->flags & FLAG_CHECK_NARGS)) {
-							vec = NULL;
-						} else if (vb_is_str) {
-							vec = newASSIGNOP(
-								OPf_STACKED,
-								mkvecbits(aTHX_ vb, i),
-								0,
-								newSVOP(OP_CONST, 0, newSViv(1))
-							);
-						} else {
-							vec = newASSIGNOP(
-								OPf_STACKED,
-								my_var(aTHX_ 0, vb),
-								OP_BIT_OR,
-								newSVOP(OP_CONST, 0, newSVuv((UV)1 << i))
-							);
-						}
-
-						nest = newCONDOP(
-							0,
-							newBINOP(
-								OP_SEQ, 0,
-								my_var(aTHX_ 0, vk),
-								newSVOP(OP_CONST, 0, newSVpvn_utf8(dp + 1, dn - 1, SvUTF8(cur->name)))
-							),
-							op_append_list(
-								OP_LINESEQ,
-								newASSIGNOP(
-									OPf_STACKED,
-									my_var(aTHX_ 0, cur->padoff),
-									0,
-									mkargselem(
-										aTHX_
-										newBINOP(
-											OP_ADD, 0,
-											my_var(aTHX_ 0, vi),
-											newSVOP(OP_CONST, 0, newSViv(1))
-										)
-									)
-								),
-								vec
-							),
-							nest
-						);
-					}
-
-					loop = op_append_elem(OP_LINESEQ, loop, newSTATEOP(0, NULL, nest));
-				}
-
-				loop = newWHILEOP(
-					0, 1,
-					NULL,
-					newBINOP(
-						OP_LT, 0,
-						my_var(aTHX_ 0, vi),
-						newAVREF(newGVOP(OP_GV, 0, PL_defgv))
-					),
-					loop,
-					newASSIGNOP(
-						OPf_STACKED,
-						my_var(aTHX_ 0, vi),
-						OP_ADD,
-						newSVOP(OP_CONST, 0, newSViv(2))
-					),
-					0
-				);
-
-				nameblock = op_append_list(OP_LINESEQ, nameblock, newSTATEOP(0, NULL, loop));
-			}
-
-			if (param_spec->named_required.used && (spec->flags & FLAG_CHECK_NARGS)) {
-				OP *cond, *err, *croak, *join;
-
-				{
-					size_t i, lim;
-					OP *first, *mid, *last;
-
-					last = newNULLLIST();
-					mid = last;
-
-					for (i = param_spec->named_required.used; i--; ) {
-						OP *cur;
-						SV *sv = param_spec->named_required.data[i].name;
-						size_t n;
-						char *p = SvPV(sv, n);
-						cur = newCONDOP(
-							0,
-							vb_is_str
-								? mkvecbits(aTHX_ vb, i)
-								: newBINOP(OP_BIT_AND, 0, my_var(aTHX_ 0, vb), newSVOP(OP_CONST, 0, newSVuv((UV)1 << i)))
-							,
-							newNULLLIST(),
-							newSVOP(OP_CONST, 0, newSVpvn_utf8(p + 1, n - 1, SvUTF8(sv)))
-						);
-						cur->op_sibling = mid;
-						mid = cur;
-					}
-
-					first = newSVOP(OP_CONST, 0, newSVpvs(", "));
-					first->op_sibling = mid;
-					mid = first;
-
-					first = newOP(OP_PUSHMARK, 0);
-
-					join = newLISTOP(OP_JOIN, 0, first, mid);
-					join->op_targ = pad_alloc(OP_JOIN, SVs_PADTMP);
-					((LISTOP *)join)->op_last = last;
-				}
-
-				err = newSVOP(
-					OP_CONST, 0,
-					newSVpvf("In %"SVf": missing named parameter(s): ", SVfARG(declarator))
-				);
-				err = newBINOP(OP_CONCAT, 0, err, join);
-				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)
-				);
-				if (vb_is_str) {
-					cond = newBINOP(
-						OP_SNE, 0,
-						my_var(aTHX_ 0, vb),
-						newSVOP(OP_CONST, 0, mkbits1(aTHX_ param_spec->named_required.used))
-					);
-				} else {
-					cond = newBINOP(
-						OP_NE, 0,
-						my_var(aTHX_ 0, vb),
-						newSVOP(
-							OP_CONST, 0,
-							newSVuv(
-								param_spec->named_required.used == UV_BITS
-								? ~(UV)0
-								: ((UV)1 << param_spec->named_required.used) - 1
-							)
-						)
-					);
-				}
-				err = newCONDOP(
-					0,
-					cond,
-					err,
-					NULL
-				);
-
-				nameblock = op_append_list(OP_LINESEQ, nameblock, err);
-			}
-
-			if (param_spec->named_optional.used) {
-				size_t i, lim;
-
-				for (i = 0, lim = param_spec->named_optional.used; i < lim; i++) {
-					ParamInit *const cur = &param_spec->named_optional.data[i];
-					OP *init, *cond;
-
-					init = newASSIGNOP(
-						OPf_STACKED,
-						my_var(aTHX_ 0, cur->param.padoff),
-						0,
-						cur->init
-					);
-					cur->init = NULL;
-
-					cond = vc_is_str
-						? mkvecbits(aTHX_ vc, i)
-						: newBINOP(OP_BIT_AND, 0, my_var(aTHX_ 0, vc), newSVOP(OP_CONST, 0, newSVuv((UV)1 << i)))
-					;
-
-					init = newCONDOP(0, cond, NULL, init);
-
-					nameblock = op_append_list(OP_LINESEQ, nameblock, newSTATEOP(0, NULL, init));
-				}
-			}
-
-			nameblock = S_block_end(aTHX_ nameblock_ix, nameblock);
-			nameblock = op_scope(nameblock);
-
-			*prelude_sentinel = op_append_list(OP_LINESEQ, *prelude_sentinel, nameblock);
-		}
 	}
 
 	/* finally let perl parse the actual subroutine body */