+#define PERL_NO_GET_CONTEXT 1
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
+#include "hook_op_check.h"
#undef printf
#include "stolen_chunk_of_toke.c"
#include <stdio.h>
#include <string.h>
+#define PERL_VERSION_DECIMAL(r,v,s) (r*1000000 + v*1000 + s)
+#define PERL_DECIMAL_VERSION \
+ PERL_VERSION_DECIMAL(PERL_REVISION,PERL_VERSION,PERL_SUBVERSION)
+#define PERL_VERSION_GE(r,v,s) \
+ (PERL_DECIMAL_VERSION >= PERL_VERSION_DECIMAL(r,v,s))
+
#ifndef Newx
# define Newx(v,n,t) New(0,v,n,t)
#endif /* !Newx */
+#define DD_DEBUGf_UPDATED_LINESTR 1
+#define DD_DEBUGf_TRACE 2
+
+#define DD_DEBUG_UPDATED_LINESTR (dd_debug & DD_DEBUGf_UPDATED_LINESTR)
+#define DD_DEBUG_TRACE (dd_debug & DD_DEBUGf_TRACE)
static int dd_debug = 0;
+#define DD_CONST_VIA_RV2CV PERL_VERSION_GE(5,11,2)
+
+#define DD_GROW_VIA_BLOCKHOOK PERL_VERSION_GE(5,13,3)
+
#define LEX_NORMAL 10
#define LEX_INTERPNORMAL 9
+/* please try not to have a line longer than this :) */
+
+#define DD_PREFERRED_LINESTR_SIZE 16384
+
/* flag to trigger removal of temporary declaree sub */
static int in_declare = 0;
#define DD_AM_LEXING_CHECK (PL_lex_state == LEX_NORMAL || PL_lex_state == LEX_INTERPNORMAL)
-#ifdef PL_parser
+#if defined(PL_parser) || defined(PERL_5_9_PLUS)
#define DD_HAVE_PARSER PL_parser
#define DD_HAVE_LEX_STUFF (PL_parser && PL_lex_stuff)
#define DD_AM_LEXING (PL_parser && DD_AM_LEXING_CHECK)
HV* is_declarator_pack_hash;
SV** is_declarator_flag_ref;
int dd_flags;
+ char* curstash_name;
is_declarator = get_hv("Devel::Declare::declarators", FALSE);
/* $declarators{$current_package_name} */
- if (!HvNAME(PL_curstash))
- return -1;
+ curstash_name = HvNAME(PL_curstash);
+ if (!curstash_name)
+ return -1;
- is_declarator_pack_ref = hv_fetch(is_declarator, HvNAME(PL_curstash),
- strlen(HvNAME(PL_curstash)), FALSE);
+ is_declarator_pack_ref = hv_fetch(is_declarator, curstash_name,
+ strlen(curstash_name), FALSE);
if (!is_declarator_pack_ref || !SvROK(*is_declarator_pack_ref))
return -1; /* not a hashref */
/* requires SvIOK as well as TRUE since flags not being an int is useless */
if (!is_declarator_flag_ref
- || !SvIOK(*is_declarator_flag_ref)
+ || !SvIOK(*is_declarator_flag_ref)
|| !SvTRUE(*is_declarator_flag_ref))
return -1;
}
void dd_set_linestr(pTHX_ char* new_value) {
- int new_len = strlen(new_value);
+ unsigned int new_len = strlen(new_value);
if (SvLEN(PL_linestr) < new_len) {
- croak("forced to realloc PL_linestr for line %s, bailing out before we crash harder", SvPVX(PL_linestr));
+ croak("PL_linestr not long enough, was Devel::Declare loaded soon enough in %s",
+ CopFILE(&PL_compiling)
+ );
}
- SvGROW(PL_linestr, new_len);
memcpy(SvPVX(PL_linestr), new_value, new_len+1);
SvCUR_set(PL_linestr, new_len);
PL_bufend = SvPVX(PL_linestr) + new_len;
+
+ if ( DD_DEBUG_UPDATED_LINESTR && PERLDB_LINE && PL_curstash != PL_debstash) {
+ /* Cribbed from toke.c */
+ AV *fileav = CopFILEAV(&PL_compiling);
+ if (fileav) {
+ SV * const sv = NEWSV(85,0);
+
+ sv_upgrade(sv, SVt_PVMG);
+ sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr);
+ (void)SvIOK_on(sv);
+ SvIV_set(sv, 0);
+ av_store(fileav,(I32)CopLINE(&PL_compiling),sv);
+ }
+ }
}
char* dd_get_lex_stuff(pTHX) {
return s - base_s;
}
+int dd_toke_scan_ident(pTHX_ int offset) {
+ char tmpbuf[sizeof PL_tokenbuf];
+ char* base_s = SvPVX(PL_linestr) + offset;
+ char* s = scan_ident(base_s, PL_bufend, tmpbuf, sizeof tmpbuf, 0);
+ return s - base_s;
+}
+
int dd_toke_scan_str(pTHX_ int offset) {
+ char* old_pvx = SvPVX(PL_linestr);
+ SV* line_copy = sv_2mortal(newSVsv(PL_linestr));
char* base_s = SvPVX(PL_linestr) + offset;
char* s = scan_str(base_s, FALSE, FALSE);
+ if(SvPVX(PL_linestr) != old_pvx)
+ croak("PL_linestr reallocated during scan_str, "
+ "Devel::Declare can't continue");
+ if (!s)
+ return 0;
+ if (s <= base_s || memcmp(SvPVX(line_copy), SvPVX(PL_linestr), offset)) {
+ s += SvCUR(line_copy);
+ sv_catsv(line_copy, PL_linestr);
+ dd_set_linestr(aTHX_ SvPV_nolen(line_copy));
+ }
return s - base_s;
}
int dd_toke_skipspace(pTHX_ int offset) {
+ char* old_pvx = SvPVX(PL_linestr);
char* base_s = SvPVX(PL_linestr) + offset;
- char* s = skipspace(base_s);
+ char* s = skipspace_force(base_s);
+ if(SvPVX(PL_linestr) != old_pvx)
+ croak("PL_linestr reallocated during skipspace, "
+ "Devel::Declare can't continue");
return s - base_s;
}
-/* replacement PL_check rv2cv entry */
+static void call_done_declare(pTHX) {
+ dSP;
-STATIC OP *(*dd_old_ck_rv2cv)(pTHX_ OP *op);
+ if (DD_DEBUG_TRACE) {
+ printf("Deconstructing declare\n");
+ printf("PL_bufptr: %s\n", PL_bufptr);
+ printf("bufend at: %i\n", (int)(PL_bufend - PL_bufptr));
+ printf("linestr: %s\n", SvPVX(PL_linestr));
+ printf("linestr len: %i\n", (int)(PL_bufend - SvPVX(PL_linestr)));
+ }
-STATIC OP *dd_ck_rv2cv(pTHX_ OP *o) {
+ ENTER;
+ SAVETMPS;
+
+ PUSHMARK(SP);
+
+ call_pv("Devel::Declare::done_declare", G_VOID|G_DISCARD);
+
+ FREETMPS;
+ LEAVE;
+
+ if (DD_DEBUG_TRACE) {
+ printf("PL_bufptr: %s\n", PL_bufptr);
+ printf("bufend at: %i\n", (int)(PL_bufend - PL_bufptr));
+ printf("linestr: %s\n", SvPVX(PL_linestr));
+ printf("linestr len: %i\n", (int)(PL_bufend - SvPVX(PL_linestr)));
+ printf("actual len: %i\n", (int)strlen(PL_bufptr));
+ }
+}
+
+static int dd_handle_const(pTHX_ char *name);
+
+#ifdef CV_NAME_NOTQUAL /* 5.21.5 */
+# define Gv_or_CvNAME(g) (isGV(g) \
+ ? GvNAME(g) \
+ : SvPV_nolen(cv_name((CV *)SvRV(g), NULL, CV_NAME_NOTQUAL)))
+#elif defined(CvNAMED) /* 5.21.4 */
+# define Gv_or_CvNAME(g) (isGV(g) \
+ ? GvNAME(g) \
+ : CvNAMED(SvRV(g)) \
+ ? HEK_KEY(CvNAME_HEK((CV *)SvRV(g))) \
+ : GvNAME(CvGV(SvRV(g))))
+#else
+# define Gv_or_CvNAME(g) GvNAME(g)
+#endif
+
+/* replacement PL_check rv2cv entry */
+
+STATIC OP *dd_ck_rv2cv(pTHX_ OP *o, void *user_data) {
OP* kid;
int dd_flags;
+ char *gvname;
- o = dd_old_ck_rv2cv(aTHX_ o); /* let the original do its job */
+ PERL_UNUSED_VAR(user_data);
- if (in_declare) {
- if (dd_debug) {
- printf("Deconstructing declare\n");
- printf("PL_bufptr: %s\n", PL_bufptr);
- printf("bufend at: %i\n", PL_bufend - PL_bufptr);
- printf("linestr: %s\n", SvPVX(PL_linestr));
- printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
- }
+ if (!DD_AM_LEXING)
+ return o; /* not lexing? */
- dSP;
-
- ENTER;
- SAVETMPS;
-
- PUSHMARK(SP);
-
- call_pv("Devel::Declare::done_declare", G_VOID|G_DISCARD);
-
- FREETMPS;
- LEAVE;
-
- if (dd_debug) {
- printf("PL_bufptr: %s\n", PL_bufptr);
- printf("bufend at: %i\n", PL_bufend - PL_bufptr);
- printf("linestr: %s\n", SvPVX(PL_linestr));
- printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
- printf("actual len: %i\n", strlen(PL_bufptr));
- }
+ if (in_declare) {
+ call_done_declare(aTHX);
return o;
}
if (kid->op_type != OP_GV) /* not a GV so ignore */
return o;
- if (!DD_AM_LEXING)
- return o; /* not lexing? */
+ if (!isGV(kGVOP_gv)
+ && (!SvROK(kGVOP_gv) || SvTYPE(SvRV(kGVOP_gv)) != SVt_PVCV))
+ return o;
+
+ gvname = Gv_or_CvNAME(kGVOP_gv);
- if (dd_debug) {
- printf("Checking GV %s -> %s\n", HvNAME(GvSTASH(kGVOP_gv)), GvNAME(kGVOP_gv));
+ if (DD_DEBUG_TRACE) {
+ printf("Checking GV %s -> %s\n", HvNAME(GvSTASH(kGVOP_gv)), gvname);
}
- dd_flags = dd_is_declarator(aTHX_ GvNAME(kGVOP_gv));
+ dd_flags = dd_is_declarator(aTHX_ gvname);
if (dd_flags == -1)
return o;
- if (dd_debug) {
+ if (DD_DEBUG_TRACE) {
printf("dd_flags are: %i\n", dd_flags);
printf("PL_tokenbuf: %s\n", PL_tokenbuf);
}
- dd_linestr_callback(aTHX_ "rv2cv", GvNAME(kGVOP_gv));
+#if DD_CONST_VIA_RV2CV
+ if (PL_expect != XOPERATOR) {
+ if (!dd_handle_const(aTHX_ Gv_or_CvNAME(kGVOP_gv)))
+ return o;
+ CopLINE(PL_curcop) = PL_copline;
+ /* The parser behaviour that we're simulating depends on what comes
+ after the declarator. */
+ if (*skipspace(PL_bufptr + strlen(gvname)) != '(') {
+ if (in_declare) {
+ call_done_declare(aTHX);
+ } else {
+ dd_linestr_callback(aTHX_ "rv2cv", gvname);
+ }
+ }
+ return o;
+ }
+#endif /* DD_CONST_VIA_RV2CV */
+
+ dd_linestr_callback(aTHX_ "rv2cv", gvname);
return o;
}
-STATIC OP *(*dd_old_ck_entereval)(pTHX_ OP *op);
+#if DD_GROW_VIA_BLOCKHOOK
+
+static void dd_block_start(pTHX_ int full)
+{
+ PERL_UNUSED_VAR(full);
+ if (SvLEN(PL_linestr) < DD_PREFERRED_LINESTR_SIZE)
+ (void) lex_grow_linestr(DD_PREFERRED_LINESTR_SIZE);
+}
+
+#else /* !DD_GROW_VIA_BLOCKHOOK */
OP* dd_pp_entereval(pTHX) {
dSP;
- dPOPss;
STRLEN len;
const char* s;
+ SV *sv;
+#ifdef PERL_5_9_PLUS
+ SV *saved_hh = NULL;
+ if (PL_op->op_private & OPpEVAL_HAS_HH) {
+ saved_hh = POPs;
+ }
+#endif
+ sv = POPs;
if (SvPOK(sv)) {
- if (dd_debug) {
+ if (DD_DEBUG_TRACE) {
printf("mangling eval sv\n");
}
if (SvREADONLY(sv))
sv = sv_2mortal(newSVsv(sv));
sv_catpvn(sv, "\n;", 2);
}
- SvGROW(sv, 8192);
+ SvGROW(sv, DD_PREFERRED_LINESTR_SIZE);
}
PUSHs(sv);
+#ifdef PERL_5_9_PLUS
+ if (PL_op->op_private & OPpEVAL_HAS_HH) {
+ PUSHs(saved_hh);
+ }
+#endif
return PL_ppaddr[OP_ENTEREVAL](aTHX);
}
-STATIC OP *dd_ck_entereval(pTHX_ OP *o) {
- o = dd_old_ck_entereval(aTHX_ o); /* let the original do its job */
+STATIC OP *dd_ck_entereval(pTHX_ OP *o, void *user_data) {
+ PERL_UNUSED_VAR(user_data);
+
if (o->op_ppaddr == PL_ppaddr[OP_ENTEREVAL])
o->op_ppaddr = dd_pp_entereval;
return o;
}
+#endif /* !DD_GROW_VIA_BLOCKHOOK */
+
static I32 dd_filter_realloc(pTHX_ int idx, SV *sv, int maxlen)
{
+ SV *filter_datasv;
const I32 count = FILTER_READ(idx+1, sv, maxlen);
- SvGROW(sv, 8192); /* please try not to have a line longer than this :) */
- /* filter_del(dd_filter_realloc); */
+ SvGROW(sv, DD_PREFERRED_LINESTR_SIZE);
+ /* Filters can only be deleted in the correct order (reverse of the
+ order in which they were added). Insisting on deleting the filter
+ here would break if another filter were added after ours and is
+ still around. Not deleting the filter at all would break if another
+ filter were added earlier and attempts to delete itself later.
+ We can play nicely to the maximum possible extent by deleting our
+ filter iff it is currently deletable (i.e., it is on the top of
+ the filter stack). Can still run into trouble in more complex
+ situations, but can't avoid that. */
+ if (PL_rsfp_filters && AvFILLp(PL_rsfp_filters) >= 0 &&
+ (filter_datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters))) &&
+ IoANY(filter_datasv) == FPTR2DPTR(void *, dd_filter_realloc)) {
+ filter_del(dd_filter_realloc);
+ }
return count;
}
-STATIC OP *(*dd_old_ck_const)(pTHX_ OP*op);
+static int dd_handle_const(pTHX_ char *name) {
+ switch (PL_lex_inwhat) {
+ case OP_QR:
+ case OP_MATCH:
+ case OP_SUBST:
+ case OP_TRANS:
+ case OP_BACKTICK:
+ case OP_STRINGIFY:
+ return 0;
+ break;
+ default:
+ break;
+ }
+
+ if (strnEQ(PL_bufptr, "->", 2)) {
+ return 0;
+ }
+
+ {
+ char buf[256];
+ STRLEN len;
+ char *s = PL_bufptr;
+ STRLEN old_offset = PL_bufptr - SvPVX(PL_linestr);
+
+ s = scan_word(s, buf, sizeof buf, FALSE, &len);
+ if (strnEQ(buf, name, len)) {
+ char *d;
+ SV *inject = newSVpvn(SvPVX(PL_linestr), PL_bufptr - SvPVX(PL_linestr));
+ sv_catpvn(inject, buf, len);
+
+ d = peekspace(s);
+ sv_catpvn(inject, s, d - s);
+
+ if ((PL_bufend - d) >= 2 && strnEQ(d, "=>", 2)) {
+ return 0;
+ }
+
+ sv_catpv(inject, d);
+ dd_set_linestr(aTHX_ SvPV_nolen(inject));
+ PL_bufptr = SvPVX(PL_linestr) + old_offset;
+ SvREFCNT_dec (inject);
+ }
+ }
+
+ dd_linestr_callback(aTHX_ "const", name);
+
+ return 1;
+}
-STATIC OP *dd_ck_const(pTHX_ OP *o) {
+#if !DD_CONST_VIA_RV2CV
+
+STATIC OP *dd_ck_const(pTHX_ OP *o, void *user_data) {
int dd_flags;
char* name;
- o = dd_old_ck_const(aTHX_ o); /* let the original do its job */
+ PERL_UNUSED_VAR(user_data);
+
+ if (DD_HAVE_PARSER && PL_expect == XOPERATOR) {
+ return o;
+ }
/* if this is set, we just grabbed a delimited string or something,
not a bareword, so NO TOUCHY */
if (dd_flags == -1)
return o;
- dd_linestr_callback(aTHX_ "const", name);
+ dd_handle_const(aTHX_ name);
- return o;
+ return o;
}
-static int initialized = 0;
+#endif /* !DD_CONST_VIA_RV2CV */
+
+STATIC void dd_initialize(pTHX) {
+ static int initialized = 0;
+ if (!initialized) {
+ initialized = 1;
+#if DD_GROW_VIA_BLOCKHOOK
+ {
+ static BHK bhk;
+#if PERL_VERSION_GE(5,13,6)
+ BhkENTRY_set(&bhk, bhk_start, dd_block_start);
+#else /* <5.13.6 */
+ BhkENTRY_set(&bhk, start, dd_block_start);
+#endif /* <5.13.6 */
+ Perl_blockhook_register(aTHX_ &bhk);
+ }
+#else /* !DD_GROW_VIA_BLOCKHOOK */
+ hook_op_check(OP_ENTEREVAL, dd_ck_entereval, NULL);
+#endif /* !DD_GROW_VIA_BLOCKHOOK */
+ hook_op_check(OP_RV2CV, dd_ck_rv2cv, NULL);
+#if !DD_CONST_VIA_RV2CV
+ hook_op_check(OP_CONST, dd_ck_const, NULL);
+#endif /* !DD_CONST_VIA_RV2CV */
+ }
+}
MODULE = Devel::Declare PACKAGE = Devel::Declare
PROTOTYPES: DISABLE
void
+initialize()
+ CODE:
+ dd_initialize(aTHX);
+
+void
setup()
CODE:
- if (!initialized++) {
- dd_old_ck_rv2cv = PL_check[OP_RV2CV];
- PL_check[OP_RV2CV] = dd_ck_rv2cv;
- dd_old_ck_entereval = PL_check[OP_ENTEREVAL];
- PL_check[OP_ENTEREVAL] = dd_ck_entereval;
- dd_old_ck_const = PL_check[OP_CONST];
- PL_check[OP_CONST] = dd_ck_const;
- }
- filter_add(dd_filter_realloc, NULL);
+ dd_initialize(aTHX);
+ filter_add(dd_filter_realloc, NULL);
char*
get_linestr()
OUTPUT:
RETVAL
-int
+SV*
toke_scan_str(int offset);
+ PREINIT:
+ int len;
CODE:
- RETVAL = dd_toke_scan_str(aTHX_ offset);
+ len = dd_toke_scan_str(aTHX_ offset);
+ RETVAL = len ? newSViv(len) : &PL_sv_undef;
+ OUTPUT:
+ RETVAL
+
+int
+toke_scan_ident(int offset)
+ CODE:
+ RETVAL = dd_toke_scan_ident(aTHX_ offset);
OUTPUT:
RETVAL
in_declare = value;
BOOT:
- if (getenv ("DD_DEBUG")) {
- dd_debug = 1;
+{
+ char *endptr;
+ char *debug_str = getenv ("DD_DEBUG");
+ if (debug_str) {
+ dd_debug = strtol (debug_str, &endptr, 10);
+ if (*endptr != '\0') {
+ dd_debug = 0;
+ }
}
+}
projects / p5sagit/Devel-Declare.git / blobdiff