[p5sagit/Devel-Declare.git] / Declare.xs

#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#undef printf
#include "stolen_chunk_of_toke.c"
#include <stdio.h>
#include <string.h>

#ifndef Newx
# define Newx(v,n,t) New(0,v,n,t)
#endif /* !Newx */

#if 0
#define DD_DEBUG
#endif

#ifdef DD_DEBUG
#define DD_DEBUG_S printf("Buffer: %s\n", s);
#else
#define DD_DEBUG_S
#endif

#define LEX_NORMAL    10
#define LEX_INTERPNORMAL   9

/* flag to trigger removal of temporary declaree sub */

static int in_declare = 0;

/* in 5.10, PL_parser will be NULL if we aren't parsing, and PL_lex_stuff
   is a lookup into it - so if anything else we can use to tell, so we
   need to be a bit more careful if PL_parser exists */

#define DD_AM_LEXING_CHECK (PL_lex_state == LEX_NORMAL || PL_lex_state == LEX_INTERPNORMAL)

#ifdef PL_parser
#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)
#else
#define DD_HAVE_PARSER 1
#define DD_HAVE_LEX_STUFF PL_lex_stuff
#define DD_AM_LEXING DD_AM_LEXING_CHECK
#endif

/* thing that decides whether we're dealing with a declarator */

int dd_is_declarator(pTHX_ char* name) {
  HV* is_declarator;
  SV** is_declarator_pack_ref;
  HV* is_declarator_pack_hash;
  SV** is_declarator_flag_ref;
  int dd_flags;

  is_declarator = get_hv("Devel::Declare::declarators", FALSE);

  if (!is_declarator)
    return -1;

  /* $declarators{$current_package_name} */

  is_declarator_pack_ref = hv_fetch(is_declarator, HvNAME(PL_curstash),
                             strlen(HvNAME(PL_curstash)), FALSE);

  if (!is_declarator_pack_ref || !SvROK(*is_declarator_pack_ref))
    return -1; /* not a hashref */

  is_declarator_pack_hash = (HV*) SvRV(*is_declarator_pack_ref);

  /* $declarators{$current_package_name}{$name} */

  is_declarator_flag_ref = hv_fetch(
    is_declarator_pack_hash, name,
    strlen(name), FALSE
  );

  /* requires SvIOK as well as TRUE since flags not being an int is useless */

  if (!is_declarator_flag_ref
        || !SvIOK(*is_declarator_flag_ref) 
        || !SvTRUE(*is_declarator_flag_ref))
    return -1;

  dd_flags = SvIVX(*is_declarator_flag_ref);

  return dd_flags;
}

/* callback thingy */

void dd_linestr_callback (pTHX_ char* type, char* name) {

  char* linestr = SvPVX(PL_linestr);
  int offset = PL_bufptr - linestr;

  dSP;

  ENTER;
  SAVETMPS;

  PUSHMARK(SP);
  XPUSHs(sv_2mortal(newSVpv(type, 0)));
  XPUSHs(sv_2mortal(newSVpv(name, 0)));
  XPUSHs(sv_2mortal(newSViv(offset)));
  PUTBACK;

  call_pv("Devel::Declare::linestr_callback", G_VOID|G_DISCARD);

  FREETMPS;
  LEAVE;
}

char* dd_get_linestr(pTHX) {
  return SvPVX(PL_linestr);
}

void dd_set_linestr(pTHX_ char* new_value) {
  int new_len = strlen(new_value);
  char* old_linestr = SvPVX(PL_linestr);

  SvGROW(PL_linestr, new_len);

  if (SvPVX(PL_linestr) != old_linestr)
    croak("forced to realloc PL_linestr for line %s, bailing out before we crash harder", SvPVX(PL_linestr));

  memcpy(SvPVX(PL_linestr), new_value, new_len+1);

  SvCUR_set(PL_linestr, new_len);

  PL_bufend = SvPVX(PL_linestr) + new_len;
}

char* dd_get_lex_stuff(pTHX) {
  return (DD_HAVE_LEX_STUFF ? SvPVX(PL_lex_stuff) : "");
}

char* dd_clear_lex_stuff(pTHX) {
  if (DD_HAVE_PARSER)
    PL_lex_stuff = (SV*)NULL;
}

char* dd_get_curstash_name(pTHX) {
  return HvNAME(PL_curstash);
}

int dd_get_linestr_offset(pTHX) {
  char* linestr = SvPVX(PL_linestr);
  return PL_bufptr - linestr;
}

char* dd_move_past_token (pTHX_ char* s) {

  /*
   *   buffer will be at the beginning of the declarator, -unless- the
   *   declarator is at EOL in which case it'll be the next useful line
   *   so we don't short-circuit out if we don't find the declarator
   */

  while (s < PL_bufend && isSPACE(*s)) s++;
  if (memEQ(s, PL_tokenbuf, strlen(PL_tokenbuf)))
    s += strlen(PL_tokenbuf);
  return s;
}

int dd_toke_move_past_token (pTHX_ int offset) {
  char* base_s = SvPVX(PL_linestr) + offset;
  char* s = dd_move_past_token(aTHX_ base_s);
  return s - base_s;
}

int dd_toke_scan_word(pTHX_ int offset, int handle_package) {
  char tmpbuf[sizeof PL_tokenbuf];
  char* base_s = SvPVX(PL_linestr) + offset;
  STRLEN len;
  char* s = scan_word(base_s, tmpbuf, sizeof tmpbuf, handle_package, &len);
  return s - base_s;
}

int dd_toke_scan_str(pTHX_ int offset) {
  char* base_s = SvPVX(PL_linestr) + offset;
  char* s = scan_str(base_s, FALSE, FALSE);
  return s - base_s;
}

int dd_toke_skipspace(pTHX_ int offset) {
  char* base_s = SvPVX(PL_linestr) + offset;
  char* s = skipspace(base_s);
  return s - base_s;
}

/* replacement PL_check rv2cv entry */

STATIC OP *(*dd_old_ck_rv2cv)(pTHX_ OP *op);

STATIC OP *dd_ck_rv2cv(pTHX_ OP *o) {
  OP* kid;
  int dd_flags;
  char* cb_args[6];

  o = dd_old_ck_rv2cv(aTHX_ o); /* let the original do its job */

  if (in_declare) {
    cb_args[0] = NULL;
#ifdef 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));
#endif
    call_argv("Devel::Declare::done_declare", G_VOID|G_DISCARD, cb_args);
#ifdef 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));
#endif
    return o;
  }

  kid = cUNOPo->op_first;

  if (kid->op_type != OP_GV) /* not a GV so ignore */
    return o;

  if (!DD_AM_LEXING)
    return o; /* not lexing? */

#ifdef DD_DEBUG
  printf("Checking GV %s -> %s\n", HvNAME(GvSTASH(kGVOP_gv)), GvNAME(kGVOP_gv));
#endif

  dd_flags = dd_is_declarator(aTHX_ GvNAME(kGVOP_gv));

  if (dd_flags == -1)
    return o;

#ifdef DD_DEBUG
  printf("dd_flags are: %i\n", dd_flags);
#endif

#ifdef DD_DEBUG
  printf("PL_tokenbuf: %s\n", PL_tokenbuf);
#endif

  dd_linestr_callback(aTHX_ "rv2cv", GvNAME(kGVOP_gv));

  return o;
}

STATIC OP *(*dd_old_ck_entereval)(pTHX_ OP *op);

OP* dd_pp_entereval(pTHX) {
  dSP;
  dPOPss;
  STRLEN len;
  const char* s;
  if (SvPOK(sv)) {
#ifdef DD_DEBUG
    printf("mangling eval sv\n");
#endif
    if (SvREADONLY(sv))
      sv = sv_2mortal(newSVsv(sv));
    s = SvPVX(sv);
    len = SvCUR(sv);
    if (!len || s[len-1] != ';') {
      if (!(SvFLAGS(sv) & SVs_TEMP))
        sv = sv_2mortal(newSVsv(sv));
      sv_catpvn(sv, "\n;", 2);
    }
    SvGROW(sv, 8192);
  }
  PUSHs(sv);
  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 */
  if (o->op_ppaddr == PL_ppaddr[OP_ENTEREVAL])
    o->op_ppaddr = dd_pp_entereval;
  return o;
}

static I32 dd_filter_realloc(pTHX_ int idx, SV *sv, int maxlen)
{
  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); */
  return count;
}

STATIC OP *(*dd_old_ck_const)(pTHX_ OP*op);

STATIC OP *dd_ck_const(pTHX_ OP *o) {
  int dd_flags;
  char* s;
  char* name;

  o = dd_old_ck_const(aTHX_ o); /* let the original do its job */

  /* if this is set, we just grabbed a delimited string or something,
     not a bareword, so NO TOUCHY */

  if (DD_HAVE_LEX_STUFF)
    return o;

  /* don't try and look this up if it's not a string const */
  if (!SvPOK(cSVOPo->op_sv))
    return o;

  name = SvPVX(cSVOPo->op_sv);

  dd_flags = dd_is_declarator(aTHX_ name);

  if (dd_flags == -1)
    return o;

  dd_linestr_callback(aTHX_ "const", name);

  return o;  
}

static int initialized = 0;

MODULE = Devel::Declare  PACKAGE = Devel::Declare

PROTOTYPES: DISABLE

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);

char*
get_linestr()
  CODE:
    RETVAL = dd_get_linestr(aTHX);
  OUTPUT:
    RETVAL

void
set_linestr(char* new_value)
  CODE:
    dd_set_linestr(aTHX_ new_value);

char*
get_lex_stuff()
  CODE:
    RETVAL = dd_get_lex_stuff(aTHX);
  OUTPUT:
    RETVAL

void
clear_lex_stuff()
  CODE:
    dd_clear_lex_stuff(aTHX);

char*
get_curstash_name()
  CODE:
    RETVAL = dd_get_curstash_name(aTHX);
  OUTPUT:
    RETVAL

int
get_linestr_offset()
  CODE:
    RETVAL = dd_get_linestr_offset(aTHX);
  OUTPUT:
    RETVAL

int
toke_scan_word(int offset, int handle_package)
  CODE:
    RETVAL = dd_toke_scan_word(aTHX_ offset, handle_package);
  OUTPUT:
    RETVAL

int
toke_move_past_token(int offset);
  CODE:
    RETVAL = dd_toke_move_past_token(aTHX_ offset);
  OUTPUT:
    RETVAL

int
toke_scan_str(int offset);
  CODE:
    RETVAL = dd_toke_scan_str(aTHX_ offset);
  OUTPUT:
    RETVAL

int
toke_skipspace(int offset)
  CODE:
    RETVAL = dd_toke_skipspace(aTHX_ offset);
  OUTPUT:
    RETVAL

int
get_in_declare()
  CODE:
    RETVAL = in_declare;
  OUTPUT:
    RETVAL

void
set_in_declare(int value)
  CODE:
    in_declare = value;
Commit	Line	Data
94caac6e	1	#define PERL_NO_GET_CONTEXT
94caac6e	2	#include "EXTERN.h"
	3	#include "perl.h"
	4	#include "XSUB.h"
	5	#undef printf
e807ee50	6	#include "stolen_chunk_of_toke.c"
94caac6e	7	#include <stdio.h>
	8	#include <string.h>
	9
9673d7ca	10	#ifndef Newx
	11	# define Newx(v,n,t) New(0,v,n,t)
	12	#endif /* !Newx */
	13
53e3ab32	14	#if 0
	15	#define DD_DEBUG
	16	#endif
c630715a	17
	18	#ifdef DD_DEBUG
	19	#define DD_DEBUG_S printf("Buffer: %s\n", s);
	20	#else
	21	#define DD_DEBUG_S
	22	#endif
	23
94caac6e	24	#define LEX_NORMAL 10
	25	#define LEX_INTERPNORMAL 9
	26
94caac6e	27	/* flag to trigger removal of temporary declaree sub */
	28
	29	static int in_declare = 0;
	30
96f12726	31	/* in 5.10, PL_parser will be NULL if we aren't parsing, and PL_lex_stuff
	32	is a lookup into it - so if anything else we can use to tell, so we
	33	need to be a bit more careful if PL_parser exists */
	34
	35	#define DD_AM_LEXING_CHECK (PL_lex_state == LEX_NORMAL \|\| PL_lex_state == LEX_INTERPNORMAL)
	36
	37	#ifdef PL_parser
	38	#define DD_HAVE_PARSER PL_parser
	39	#define DD_HAVE_LEX_STUFF (PL_parser && PL_lex_stuff)
	40	#define DD_AM_LEXING (PL_parser && DD_AM_LEXING_CHECK)
	41	#else
	42	#define DD_HAVE_PARSER 1
	43	#define DD_HAVE_LEX_STUFF PL_lex_stuff
	44	#define DD_AM_LEXING DD_AM_LEXING_CHECK
	45	#endif
	46
72f20f69	47	/* thing that decides whether we're dealing with a declarator */
	48
	49	int dd_is_declarator(pTHX_ char* name) {
	50	HV* is_declarator;
	51	SV** is_declarator_pack_ref;
	52	HV* is_declarator_pack_hash;
	53	SV** is_declarator_flag_ref;
	54	int dd_flags;
	55
	56	is_declarator = get_hv("Devel::Declare::declarators", FALSE);
	57
	58	if (!is_declarator)
	59	return -1;
	60
569ac469	61	/* $declarators{$current_package_name} */
569ac469	62
72f20f69	63	is_declarator_pack_ref = hv_fetch(is_declarator, HvNAME(PL_curstash),
	64	strlen(HvNAME(PL_curstash)), FALSE);
	65
	66	if (!is_declarator_pack_ref \|\| !SvROK(*is_declarator_pack_ref))
	67	return -1; /* not a hashref */
	68
	69	is_declarator_pack_hash = (HV) SvRV(is_declarator_pack_ref);
	70
569ac469	71	/* $declarators{$current_package_name}{$name} */
569ac469	72
72f20f69	73	is_declarator_flag_ref = hv_fetch(
	74	is_declarator_pack_hash, name,
	75	strlen(name), FALSE
	76	);
	77
	78	/* requires SvIOK as well as TRUE since flags not being an int is useless */
	79
	80	if (!is_declarator_flag_ref
	81	\|\| !SvIOK(*is_declarator_flag_ref)
	82	\|\| !SvTRUE(*is_declarator_flag_ref))
	83	return -1;
	84
	85	dd_flags = SvIVX(*is_declarator_flag_ref);
	86
	87	return dd_flags;
	88	}
	89
569ac469	90	/* callback thingy */
569ac469	91
a9bd9b5e	92	void dd_linestr_callback (pTHX_ char* type, char* name) {
569ac469	93
569ac469	94	char* linestr = SvPVX(PL_linestr);
a9bd9b5e	95	int offset = PL_bufptr - linestr;
569ac469	96
569ac469	97	dSP;
	98
	99	ENTER;
	100	SAVETMPS;
	101
	102	PUSHMARK(SP);
	103	XPUSHs(sv_2mortal(newSVpv(type, 0)));
	104	XPUSHs(sv_2mortal(newSVpv(name, 0)));
	105	XPUSHs(sv_2mortal(newSViv(offset)));
	106	PUTBACK;
	107
04a8a223	108	call_pv("Devel::Declare::linestr_callback", G_VOID\|G_DISCARD);
569ac469	109
569ac469	110	FREETMPS;
	111	LEAVE;
	112	}
	113
	114	char* dd_get_linestr(pTHX) {
	115	return SvPVX(PL_linestr);
	116	}
	117
	118	void dd_set_linestr(pTHX_ char* new_value) {
	119	int new_len = strlen(new_value);
	120	char* old_linestr = SvPVX(PL_linestr);
	121
c41867d8	122	SvGROW(PL_linestr, new_len);
569ac469	123
569ac469	124	if (SvPVX(PL_linestr) != old_linestr)
f9eb22eb	125	croak("forced to realloc PL_linestr for line %s, bailing out before we crash harder", SvPVX(PL_linestr));
569ac469	126
	127	memcpy(SvPVX(PL_linestr), new_value, new_len+1);
	128
	129	SvCUR_set(PL_linestr, new_len);
	130
	131	PL_bufend = SvPVX(PL_linestr) + new_len;
	132	}
	133
04a8a223	134	char* dd_get_lex_stuff(pTHX) {
96f12726	135	return (DD_HAVE_LEX_STUFF ? SvPVX(PL_lex_stuff) : "");
04a8a223	136	}
	137
	138	char* dd_clear_lex_stuff(pTHX) {
96f12726	139	if (DD_HAVE_PARSER)
f05cbc90	140	PL_lex_stuff = (SV*)NULL;
04a8a223	141	}
	142
	143	char* dd_get_curstash_name(pTHX) {
	144	return HvNAME(PL_curstash);
	145	}
	146
022eb0cc	147	int dd_get_linestr_offset(pTHX) {
	148	char* linestr = SvPVX(PL_linestr);
	149	return PL_bufptr - linestr;
	150	}
	151
840ebcbb	152	char* dd_move_past_token (pTHX_ char* s) {
923c07a8	153
	154	/*
	155	* buffer will be at the beginning of the declarator, -unless- the
	156	* declarator is at EOL in which case it'll be the next useful line
	157	* so we don't short-circuit out if we don't find the declarator
	158	*/
	159
	160	while (s < PL_bufend && isSPACE(*s)) s++;
	161	if (memEQ(s, PL_tokenbuf, strlen(PL_tokenbuf)))
	162	s += strlen(PL_tokenbuf);
	163	return s;
	164	}
	165
840ebcbb	166	int dd_toke_move_past_token (pTHX_ int offset) {
04a8a223	167	char* base_s = SvPVX(PL_linestr) + offset;
	168	char* s = dd_move_past_token(aTHX_ base_s);
	169	return s - base_s;
	170	}
	171
923c07a8	172	int dd_toke_scan_word(pTHX_ int offset, int handle_package) {
	173	char tmpbuf[sizeof PL_tokenbuf];
	174	char* base_s = SvPVX(PL_linestr) + offset;
	175	STRLEN len;
	176	char* s = scan_word(base_s, tmpbuf, sizeof tmpbuf, handle_package, &len);
	177	return s - base_s;
	178	}
	179
	180	int dd_toke_scan_str(pTHX_ int offset) {
	181	char* base_s = SvPVX(PL_linestr) + offset;
	182	char* s = scan_str(base_s, FALSE, FALSE);
	183	return s - base_s;
	184	}
	185
	186	int dd_toke_skipspace(pTHX_ int offset) {
	187	char* base_s = SvPVX(PL_linestr) + offset;
	188	char* s = skipspace(base_s);
	189	return s - base_s;
	190	}
	191
94caac6e	192	/* replacement PL_check rv2cv entry */
94caac6e	193
bedac9ff	194	STATIC OP (dd_old_ck_rv2cv)(pTHX_ OP *op);
bedac9ff	195
94caac6e	196	STATIC OP dd_ck_rv2cv(pTHX_ OP o) {
94caac6e	197	OP* kid;
0ba8c7aa	198	int dd_flags;
9026391e	199	char* cb_args[6];
94caac6e	200
	201	o = dd_old_ck_rv2cv(aTHX_ o); /* let the original do its job */
	202
	203	if (in_declare) {
840ebcbb	204	cb_args[0] = NULL;
	205	#ifdef DD_DEBUG
	206	printf("Deconstructing declare\n");
	207	printf("PL_bufptr: %s\n", PL_bufptr);
	208	printf("bufend at: %i\n", PL_bufend - PL_bufptr);
	209	printf("linestr: %s\n", SvPVX(PL_linestr));
	210	printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
	211	#endif
	212	call_argv("Devel::Declare::done_declare", G_VOID\|G_DISCARD, cb_args);
	213	#ifdef DD_DEBUG
	214	printf("PL_bufptr: %s\n", PL_bufptr);
	215	printf("bufend at: %i\n", PL_bufend - PL_bufptr);
	216	printf("linestr: %s\n", SvPVX(PL_linestr));
	217	printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
	218	printf("actual len: %i\n", strlen(PL_bufptr));
	219	#endif
94caac6e	220	return o;
	221	}
	222
	223	kid = cUNOPo->op_first;
	224
	225	if (kid->op_type != OP_GV) /* not a GV so ignore */
	226	return o;
	227
96f12726	228	if (!DD_AM_LEXING)
94caac6e	229	return o; /* not lexing? */
94caac6e	230
840ebcbb	231	#ifdef DD_DEBUG
	232	printf("Checking GV %s -> %s\n", HvNAME(GvSTASH(kGVOP_gv)), GvNAME(kGVOP_gv));
	233	#endif
	234
72f20f69	235	dd_flags = dd_is_declarator(aTHX_ GvNAME(kGVOP_gv));
94caac6e	236
72f20f69	237	if (dd_flags == -1)
94caac6e	238	return o;
94caac6e	239
840ebcbb	240	#ifdef DD_DEBUG
	241	printf("dd_flags are: %i\n", dd_flags);
	242	#endif
	243
	244	#ifdef DD_DEBUG
	245	printf("PL_tokenbuf: %s\n", PL_tokenbuf);
	246	#endif
	247
a9bd9b5e	248	dd_linestr_callback(aTHX_ "rv2cv", GvNAME(kGVOP_gv));
94caac6e	249
53e3ab32	250	return o;
	251	}
	252
bedac9ff	253	STATIC OP (dd_old_ck_entereval)(pTHX_ OP *op);
bedac9ff	254
b7505981	255	OP* dd_pp_entereval(pTHX) {
	256	dSP;
	257	dPOPss;
	258	STRLEN len;
	259	const char* s;
	260	if (SvPOK(sv)) {
53e3ab32	261	#ifdef DD_DEBUG
b7505981	262	printf("mangling eval sv\n");
53e3ab32	263	#endif
b7505981	264	if (SvREADONLY(sv))
	265	sv = sv_2mortal(newSVsv(sv));
	266	s = SvPVX(sv);
	267	len = SvCUR(sv);
	268	if (!len \|\| s[len-1] != ';') {
	269	if (!(SvFLAGS(sv) & SVs_TEMP))
	270	sv = sv_2mortal(newSVsv(sv));
	271	sv_catpvn(sv, "\n;", 2);
53e3ab32	272	}
b7505981	273	SvGROW(sv, 8192);
53e3ab32	274	}
b7505981	275	PUSHs(sv);
	276	return PL_ppaddr[OP_ENTEREVAL](aTHX);
	277	}
53e3ab32	278
b7505981	279	STATIC OP dd_ck_entereval(pTHX_ OP o) {
b7505981	280	o = dd_old_ck_entereval(aTHX_ o); /* let the original do its job */
d8e65fc8	281	if (o->op_ppaddr == PL_ppaddr[OP_ENTEREVAL])
d8e65fc8	282	o->op_ppaddr = dd_pp_entereval;
94caac6e	283	return o;
	284	}
	285
6a0bcf35	286	static I32 dd_filter_realloc(pTHX_ int idx, SV *sv, int maxlen)
	287	{
	288	const I32 count = FILTER_READ(idx+1, sv, maxlen);
	289	SvGROW(sv, 8192); /* please try not to have a line longer than this :) */
	290	/* filter_del(dd_filter_realloc); */
	291	return count;
	292	}
	293
bedac9ff	294	STATIC OP (dd_old_ck_const)(pTHX_ OP*op);
	295
	296	STATIC OP dd_ck_const(pTHX_ OP o) {
bedac9ff	297	int dd_flags;
bedac9ff	298	char* s;
04a8a223	299	char* name;
bedac9ff	300
	301	o = dd_old_ck_const(aTHX_ o); /* let the original do its job */
	302
34335b63	303	/* if this is set, we just grabbed a delimited string or something,
	304	not a bareword, so NO TOUCHY */
	305
79abf18a	306	if (DD_HAVE_LEX_STUFF)
34335b63	307	return o;
34335b63	308
bedac9ff	309	/* don't try and look this up if it's not a string const */
	310	if (!SvPOK(cSVOPo->op_sv))
	311	return o;
	312
04a8a223	313	name = SvPVX(cSVOPo->op_sv);
	314
	315	dd_flags = dd_is_declarator(aTHX_ name);
bedac9ff	316
a9fb5fb1	317	if (dd_flags == -1)
bedac9ff	318	return o;
bedac9ff	319
a9bd9b5e	320	dd_linestr_callback(aTHX_ "const", name);
bedac9ff	321
bedac9ff	322	return o;
	323	}
	324
94caac6e	325	static int initialized = 0;
	326
	327	MODULE = Devel::Declare PACKAGE = Devel::Declare
	328
	329	PROTOTYPES: DISABLE
	330
	331	void
	332	setup()
	333	CODE:
	334	if (!initialized++) {
	335	dd_old_ck_rv2cv = PL_check[OP_RV2CV];
	336	PL_check[OP_RV2CV] = dd_ck_rv2cv;
b7505981	337	dd_old_ck_entereval = PL_check[OP_ENTEREVAL];
b7505981	338	PL_check[OP_ENTEREVAL] = dd_ck_entereval;
bedac9ff	339	dd_old_ck_const = PL_check[OP_CONST];
bedac9ff	340	PL_check[OP_CONST] = dd_ck_const;
94caac6e	341	}
6a0bcf35	342	filter_add(dd_filter_realloc, NULL);
569ac469	343
	344	char*
	345	get_linestr()
	346	CODE:
	347	RETVAL = dd_get_linestr(aTHX);
	348	OUTPUT:
	349	RETVAL
923c07a8	350
	351	void
	352	set_linestr(char* new_value)
	353	CODE:
	354	dd_set_linestr(aTHX_ new_value);
	355
04a8a223	356	char*
	357	get_lex_stuff()
	358	CODE:
	359	RETVAL = dd_get_lex_stuff(aTHX);
	360	OUTPUT:
	361	RETVAL
	362
	363	void
	364	clear_lex_stuff()
	365	CODE:
	366	dd_clear_lex_stuff(aTHX);
	367
	368	char*
	369	get_curstash_name()
	370	CODE:
	371	RETVAL = dd_get_curstash_name(aTHX);
	372	OUTPUT:
	373	RETVAL
	374
923c07a8	375	int
022eb0cc	376	get_linestr_offset()
	377	CODE:
	378	RETVAL = dd_get_linestr_offset(aTHX);
	379	OUTPUT:
	380	RETVAL
	381
	382	int
923c07a8	383	toke_scan_word(int offset, int handle_package)
	384	CODE:
	385	RETVAL = dd_toke_scan_word(aTHX_ offset, handle_package);
	386	OUTPUT:
	387	RETVAL
	388
	389	int
04a8a223	390	toke_move_past_token(int offset);
	391	CODE:
	392	RETVAL = dd_toke_move_past_token(aTHX_ offset);
	393	OUTPUT:
	394	RETVAL
	395
	396	int
923c07a8	397	toke_scan_str(int offset);
	398	CODE:
	399	RETVAL = dd_toke_scan_str(aTHX_ offset);
	400	OUTPUT:
	401	RETVAL
	402
	403	int
	404	toke_skipspace(int offset)
	405	CODE:
	406	RETVAL = dd_toke_skipspace(aTHX_ offset);
	407	OUTPUT:
	408	RETVAL
04a8a223	409
	410	int
	411	get_in_declare()
	412	CODE:
	413	RETVAL = in_declare;
	414	OUTPUT:
	415	RETVAL
	416
	417	void
	418	set_in_declare(int value)
	419	CODE:
	420	in_declare = value;