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

#define PERL_CORE
#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 1
#define DD_HAS_TRAITS
#endif

#if 0
#define DD_DEBUG
#endif

#define DD_HANDLE_NAME 1
#define DD_HANDLE_PROTO 2
#define DD_HANDLE_PACKAGE 8

#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;

/* 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;

  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);

  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;
}

/* replacement PL_check rv2cv entry */

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

STATIC OP *dd_ck_rv2cv(pTHX_ OP *o) {
  OP* kid;
  char* s;
  char* save_s;
  char tmpbuf[sizeof PL_tokenbuf];
  char found_name[sizeof PL_tokenbuf];
  char* found_proto = NULL, *found_traits = NULL;
  STRLEN len = 0;
  int dd_flags;
  char* cb_args[6];
  dSP; /* define stack pointer for later call stuff */
  char* retstr;
  STRLEN n_a; /* for POPpx */

  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);
    in_declare--;
#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 (PL_lex_state != LEX_NORMAL && PL_lex_state != LEX_INTERPNORMAL)
    return o; /* not lexing? */

  /* I was doing this, but the CONST wrap can't so it didn't gain anything
  stash = GvSTASH(kGVOP_gv); */

#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

  s = PL_bufptr; /* copy the current buffer pointer */

  DD_DEBUG_S

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

  /*
   *   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);

  DD_DEBUG_S

  if (dd_flags & DD_HANDLE_NAME) {

    /* find next word */

    s = skipspace(s);

    DD_DEBUG_S

    /* kill the :: added in the ck_const */
    if (*s == ':')
      *s++ = ' ';
    if (*s == ':')
      *s++ = ' ';

    /* arg 4 is allow_package */

    s = scan_word(s, tmpbuf, sizeof tmpbuf, dd_flags & DD_HANDLE_PACKAGE, &len);

    DD_DEBUG_S

    if (len) {
      strcpy(found_name, tmpbuf);
#ifdef DD_DEBUG
      printf("Found %s\n", found_name);
#endif
    }
  }

  if (dd_flags & DD_HANDLE_PROTO) {

    s = skipspace(s);

    if (*s == '(') { /* found a prototype-ish thing */
      save_s = s;
      s = scan_str(s, FALSE, FALSE); /* no keep_quoted, no keep_delims */
#ifdef DD_HAS_TRAITS
      {
          char *traitstart = s = skipspace(s);

          while (*s && *s != '{') ++s;
          if (*s) {
              int tlen = s - traitstart;
              Newx(found_traits, tlen+1, char);
              Copy(traitstart, found_traits, tlen, char);
              found_traits[tlen] = 0;
#ifdef DD_DEBUG
              printf("found traits..... (%s)\n", found_traits);
#endif
          }
      }
#endif
      
      if (SvPOK(PL_lex_stuff)) {
#ifdef DD_DEBUG
        printf("Found proto %s\n", SvPVX(PL_lex_stuff));
#endif
        found_proto = SvPVX(PL_lex_stuff);
        if (len) /* foo name () => foo name  X, only foo parsed so works */
          *save_s++ = ' ';
        else /* foo () => foo =X, TOKEN('&') won't handle foo X */
          *save_s++ = '=';
        *save_s++ = 'X';
        while (save_s < s) {
          *save_s++ = ' ';
        }
#ifdef DD_DEBUG
        printf("Curbuf %s\n", PL_bufptr);
#endif
      }
    }
  }

  if (!len)
    found_name[0] = 0;

#ifdef DD_DEBUG
  printf("Calling init_declare\n");
#endif
  cb_args[0] = HvNAME(PL_curstash);
  cb_args[1] = GvNAME(kGVOP_gv);
  cb_args[2] = HvNAME(PL_curstash);
  cb_args[3] = found_name;
  cb_args[4] = found_proto;
  cb_args[5] = found_traits;
  cb_args[6] = NULL;

  if (len && found_proto)
    in_declare = 2;
  else if (len || found_proto)
    in_declare = 1;
  if (found_proto)
    PL_lex_stuff = Nullsv;
  s = skipspace(s);
#ifdef DD_DEBUG
  printf("cur buf: %s\n", s);
  printf("bufend at: %i\n", PL_bufend - s);
  printf("linestr: %s\n", SvPVX(PL_linestr));
  printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
#endif
  
  if (*s++ == '{') {
    call_argv("Devel::Declare::init_declare", G_SCALAR, cb_args);
    SPAGAIN;
    retstr = POPpx;
    PUTBACK;
    if (retstr && strlen(retstr)) {
      const char* old_start = SvPVX(PL_linestr);
      int start_diff;
      const int old_len = SvCUR(PL_linestr);
#ifdef DD_DEBUG
      printf("Got string %s\n", retstr);
#endif
      SvGROW(PL_linestr, (STRLEN)(old_len + strlen(retstr)));
      if (start_diff = SvPVX(PL_linestr) - old_start) {
        Perl_croak(aTHX_ "forced to realloc PL_linestr for line %s, bailing out before we crash harder", SvPVX(PL_linestr));
      }
      memmove(s+strlen(retstr), s, (PL_bufend - s)+1);
      memmove(s, retstr, strlen(retstr));
      SvCUR_set(PL_linestr, old_len + strlen(retstr));
      PL_bufend += strlen(retstr);
#ifdef DD_DEBUG
  printf("cur buf: %s\n", s);
  printf("PL_bufptr: %s\n", PL_bufptr);
  printf("bufend at: %i\n", PL_bufend - s);
  printf("linestr: %s\n", SvPVX(PL_linestr));
  printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
  printf("tokenbuf now: %s\n", PL_tokenbuf);
#endif
    }
  } else {
    call_argv("Devel::Declare::init_declare", G_VOID|G_DISCARD, cb_args);
  }
  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 tmpbuf[sizeof PL_tokenbuf];
  char found_name[sizeof PL_tokenbuf];
  STRLEN len = 0;

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

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

  dd_flags = dd_is_declarator(aTHX_ SvPVX(cSVOPo->op_sv));

  if (dd_flags == -1)
    return o;

  if (!(dd_flags & DD_HANDLE_NAME))
    return o; /* if we're not handling name, method intuiting not an issue */

#ifdef DD_DEBUG
  printf("Think I found a declarator %s\n", PL_tokenbuf);
  printf("linestr: %s\n", SvPVX(PL_linestr));
#endif

  s = PL_bufptr;

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

  DD_DEBUG_S

  /* find next word */

  s = skipspace(s);

  DD_DEBUG_S

  /* arg 4 is allow_package */

  s = scan_word(s, tmpbuf, sizeof tmpbuf, dd_flags & DD_HANDLE_PACKAGE, &len);

  DD_DEBUG_S

  if (len) {
    const char* old_start = SvPVX(PL_linestr);
    int start_diff;
    const int old_len = SvCUR(PL_linestr);

    strcpy(found_name, tmpbuf);
#ifdef DD_DEBUG
    printf("Found %s\n", found_name);
#endif

    s -= len;
    SvGROW(PL_linestr, (STRLEN)(old_len + 2));
    if (start_diff = SvPVX(PL_linestr) - old_start) {
      Perl_croak(aTHX_ "forced to realloc PL_linestr for line %s, bailing out before we crash harder", SvPVX(PL_linestr));
    }
    memmove(s+2, s, (PL_bufend - s)+1);
    *s = ':';
    s++;
    *s = ':';
    SvCUR_set(PL_linestr, old_len + 2);
    PL_bufend += 2;
  }
  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);
Commit	Line	Data
94caac6e	1	#define PERL_CORE
94caac6e	2	#define PERL_NO_GET_CONTEXT
94caac6e	3	#include "EXTERN.h"
	4	#include "perl.h"
	5	#include "XSUB.h"
	6	#undef printf
e807ee50	7	#include "stolen_chunk_of_toke.c"
94caac6e	8	#include <stdio.h>
	9	#include <string.h>
	10
9673d7ca	11	#ifndef Newx
	12	# define Newx(v,n,t) New(0,v,n,t)
	13	#endif /* !Newx */
	14
	15	#if 1
0f070758	16	#define DD_HAS_TRAITS
9673d7ca	17	#endif
9673d7ca	18
53e3ab32	19	#if 0
	20	#define DD_DEBUG
	21	#endif
c630715a	22
0ba8c7aa	23	#define DD_HANDLE_NAME 1
0ba8c7aa	24	#define DD_HANDLE_PROTO 2
15d0d014	25	#define DD_HANDLE_PACKAGE 8
0ba8c7aa	26
c630715a	27	#ifdef DD_DEBUG
	28	#define DD_DEBUG_S printf("Buffer: %s\n", s);
	29	#else
	30	#define DD_DEBUG_S
	31	#endif
	32
94caac6e	33	#define LEX_NORMAL 10
	34	#define LEX_INTERPNORMAL 9
	35
94caac6e	36	/* flag to trigger removal of temporary declaree sub */
	37
	38	static int in_declare = 0;
	39
72f20f69	40	/* thing that decides whether we're dealing with a declarator */
	41
	42	int dd_is_declarator(pTHX_ char* name) {
	43	HV* is_declarator;
	44	SV** is_declarator_pack_ref;
	45	HV* is_declarator_pack_hash;
	46	SV** is_declarator_flag_ref;
	47	int dd_flags;
	48
	49	is_declarator = get_hv("Devel::Declare::declarators", FALSE);
	50
	51	if (!is_declarator)
	52	return -1;
	53
	54	is_declarator_pack_ref = hv_fetch(is_declarator, HvNAME(PL_curstash),
	55	strlen(HvNAME(PL_curstash)), FALSE);
	56
	57	if (!is_declarator_pack_ref \|\| !SvROK(*is_declarator_pack_ref))
	58	return -1; /* not a hashref */
	59
	60	is_declarator_pack_hash = (HV) SvRV(is_declarator_pack_ref);
	61
	62	is_declarator_flag_ref = hv_fetch(
	63	is_declarator_pack_hash, name,
	64	strlen(name), FALSE
	65	);
	66
	67	/* requires SvIOK as well as TRUE since flags not being an int is useless */
	68
	69	if (!is_declarator_flag_ref
	70	\|\| !SvIOK(*is_declarator_flag_ref)
	71	\|\| !SvTRUE(*is_declarator_flag_ref))
	72	return -1;
	73
	74	dd_flags = SvIVX(*is_declarator_flag_ref);
	75
	76	return dd_flags;
	77	}
	78
94caac6e	79	/* replacement PL_check rv2cv entry */
94caac6e	80
bedac9ff	81	STATIC OP (dd_old_ck_rv2cv)(pTHX_ OP *op);
bedac9ff	82
94caac6e	83	STATIC OP dd_ck_rv2cv(pTHX_ OP o) {
	84	OP* kid;
	85	char* s;
0ba8c7aa	86	char* save_s;
94caac6e	87	char tmpbuf[sizeof PL_tokenbuf];
0ba8c7aa	88	char found_name[sizeof PL_tokenbuf];
0f070758	89	char* found_proto = NULL, *found_traits = NULL;
0ba8c7aa	90	STRLEN len = 0;
0ba8c7aa	91	int dd_flags;
9026391e	92	char* cb_args[6];
53e3ab32	93	dSP; /* define stack pointer for later call stuff */
	94	char* retstr;
	95	STRLEN n_a; /* for POPpx */
94caac6e	96
	97	o = dd_old_ck_rv2cv(aTHX_ o); /* let the original do its job */
	98
	99	if (in_declare) {
	100	cb_args[0] = NULL;
dcca2c59	101	#ifdef DD_DEBUG
	102	printf("Deconstructing declare\n");
	103	printf("PL_bufptr: %s\n", PL_bufptr);
	104	printf("bufend at: %i\n", PL_bufend - PL_bufptr);
	105	printf("linestr: %s\n", SvPVX(PL_linestr));
	106	printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
	107	#endif
94caac6e	108	call_argv("Devel::Declare::done_declare", G_VOID\|G_DISCARD, cb_args);
0ba8c7aa	109	in_declare--;
dcca2c59	110	#ifdef DD_DEBUG
	111	printf("PL_bufptr: %s\n", PL_bufptr);
	112	printf("bufend at: %i\n", PL_bufend - PL_bufptr);
	113	printf("linestr: %s\n", SvPVX(PL_linestr));
	114	printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
	115	printf("actual len: %i\n", strlen(PL_bufptr));
	116	#endif
94caac6e	117	return o;
	118	}
	119
	120	kid = cUNOPo->op_first;
	121
	122	if (kid->op_type != OP_GV) /* not a GV so ignore */
	123	return o;
	124
	125	if (PL_lex_state != LEX_NORMAL && PL_lex_state != LEX_INTERPNORMAL)
	126	return o; /* not lexing? */
	127
72f20f69	128	/* I was doing this, but the CONST wrap can't so it didn't gain anything
72f20f69	129	stash = GvSTASH(kGVOP_gv); */
94caac6e	130
c630715a	131	#ifdef DD_DEBUG
72f20f69	132	printf("Checking GV %s -> %s\n", HvNAME(GvSTASH(kGVOP_gv)), GvNAME(kGVOP_gv));
c630715a	133	#endif
94caac6e	134
72f20f69	135	dd_flags = dd_is_declarator(aTHX_ GvNAME(kGVOP_gv));
94caac6e	136
72f20f69	137	if (dd_flags == -1)
94caac6e	138	return o;
94caac6e	139
0ba8c7aa	140	#ifdef DD_DEBUG
	141	printf("dd_flags are: %i\n", dd_flags);
	142	#endif
	143
94caac6e	144	s = PL_bufptr; /* copy the current buffer pointer */
94caac6e	145
c630715a	146	DD_DEBUG_S
	147
	148	#ifdef DD_DEBUG
0ba8c7aa	149	printf("PL_tokenbuf: %s\n", PL_tokenbuf);
c630715a	150	#endif
	151
	152	/*
	153	* buffer will be at the beginning of the declarator, -unless- the
	154	* declarator is at EOL in which case it'll be the next useful line
	155	* so we don't short-circuit out if we don't find the declarator
	156	*/
	157
94caac6e	158	while (s < PL_bufend && isSPACE(*s)) s++;
	159	if (memEQ(s, PL_tokenbuf, strlen(PL_tokenbuf)))
	160	s += strlen(PL_tokenbuf);
c630715a	161
c630715a	162	DD_DEBUG_S
94caac6e	163
0ba8c7aa	164	if (dd_flags & DD_HANDLE_NAME) {
94caac6e	165
0ba8c7aa	166	/* find next word */
94caac6e	167
0ba8c7aa	168	s = skipspace(s);
c630715a	169
0ba8c7aa	170	DD_DEBUG_S
94caac6e	171
bedac9ff	172	/* kill the :: added in the ck_const */
	173	if (*s == ':')
	174	*s++ = ' ';
	175	if (*s == ':')
	176	*s++ = ' ';
	177
15d0d014	178	/* arg 4 is allow_package */
94caac6e	179
15d0d014	180	s = scan_word(s, tmpbuf, sizeof tmpbuf, dd_flags & DD_HANDLE_PACKAGE, &len);
0ba8c7aa	181
0ba8c7aa	182	DD_DEBUG_S
c630715a	183
0ba8c7aa	184	if (len) {
	185	strcpy(found_name, tmpbuf);
	186	#ifdef DD_DEBUG
	187	printf("Found %s\n", found_name);
	188	#endif
	189	}
	190	}
	191
	192	if (dd_flags & DD_HANDLE_PROTO) {
	193
	194	s = skipspace(s);
	195
	196	if (s == '(') { / found a prototype-ish thing */
	197	save_s = s;
	198	s = scan_str(s, FALSE, FALSE); /* no keep_quoted, no keep_delims */
0f070758	199	#ifdef DD_HAS_TRAITS
	200	{
	201	char *traitstart = s = skipspace(s);
	202
	203	while (s && s != '{') ++s;
	204	if (*s) {
	205	int tlen = s - traitstart;
9673d7ca	206	Newx(found_traits, tlen+1, char);
0f070758	207	Copy(traitstart, found_traits, tlen, char);
	208	found_traits[tlen] = 0;
	209	#ifdef DD_DEBUG
	210	printf("found traits..... (%s)\n", found_traits);
	211	#endif
	212	}
	213	}
	214	#endif
	215
0ba8c7aa	216	if (SvPOK(PL_lex_stuff)) {
	217	#ifdef DD_DEBUG
	218	printf("Found proto %s\n", SvPVX(PL_lex_stuff));
	219	#endif
	220	found_proto = SvPVX(PL_lex_stuff);
53e3ab32	221	if (len) /* foo name () => foo name X, only foo parsed so works */
	222	*save_s++ = ' ';
	223	else /* foo () => foo =X, TOKEN('&') won't handle foo X */
	224	*save_s++ = '=';
0ba8c7aa	225	*save_s++ = 'X';
	226	while (save_s < s) {
	227	*save_s++ = ' ';
	228	}
	229	#ifdef DD_DEBUG
	230	printf("Curbuf %s\n", PL_bufptr);
	231	#endif
	232	}
	233	}
	234	}
	235
53e3ab32	236	if (!len)
	237	found_name[0] = 0;
	238
	239	#ifdef DD_DEBUG
	240	printf("Calling init_declare\n");
	241	#endif
72f20f69	242	cb_args[0] = HvNAME(PL_curstash);
53e3ab32	243	cb_args[1] = GvNAME(kGVOP_gv);
9026391e	244	cb_args[2] = HvNAME(PL_curstash);
	245	cb_args[3] = found_name;
	246	cb_args[4] = found_proto;
0f070758	247	cb_args[5] = found_traits;
0f070758	248	cb_args[6] = NULL;
53e3ab32	249
	250	if (len && found_proto)
	251	in_declare = 2;
	252	else if (len \|\| found_proto)
	253	in_declare = 1;
	254	if (found_proto)
	255	PL_lex_stuff = Nullsv;
	256	s = skipspace(s);
	257	#ifdef DD_DEBUG
	258	printf("cur buf: %s\n", s);
	259	printf("bufend at: %i\n", PL_bufend - s);
	260	printf("linestr: %s\n", SvPVX(PL_linestr));
	261	printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
	262	#endif
72f20f69	263
53e3ab32	264	if (*s++ == '{') {
	265	call_argv("Devel::Declare::init_declare", G_SCALAR, cb_args);
	266	SPAGAIN;
	267	retstr = POPpx;
	268	PUTBACK;
	269	if (retstr && strlen(retstr)) {
dcca2c59	270	const char* old_start = SvPVX(PL_linestr);
dcca2c59	271	int start_diff;
c5912dc7	272	const int old_len = SvCUR(PL_linestr);
0ba8c7aa	273	#ifdef DD_DEBUG
53e3ab32	274	printf("Got string %s\n", retstr);
0ba8c7aa	275	#endif
c5912dc7	276	SvGROW(PL_linestr, (STRLEN)(old_len + strlen(retstr)));
dcca2c59	277	if (start_diff = SvPVX(PL_linestr) - old_start) {
8314c6b3	278	Perl_croak(aTHX_ "forced to realloc PL_linestr for line %s, bailing out before we crash harder", SvPVX(PL_linestr));
dcca2c59	279	}
53e3ab32	280	memmove(s+strlen(retstr), s, (PL_bufend - s)+1);
53e3ab32	281	memmove(s, retstr, strlen(retstr));
c5912dc7	282	SvCUR_set(PL_linestr, old_len + strlen(retstr));
53e3ab32	283	PL_bufend += strlen(retstr);
	284	#ifdef DD_DEBUG
	285	printf("cur buf: %s\n", s);
dcca2c59	286	printf("PL_bufptr: %s\n", PL_bufptr);
53e3ab32	287	printf("bufend at: %i\n", PL_bufend - s);
	288	printf("linestr: %s\n", SvPVX(PL_linestr));
	289	printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
dcca2c59	290	printf("tokenbuf now: %s\n", PL_tokenbuf);
53e3ab32	291	#endif
	292	}
	293	} else {
94caac6e	294	call_argv("Devel::Declare::init_declare", G_VOID\|G_DISCARD, cb_args);
94caac6e	295	}
53e3ab32	296	return o;
	297	}
	298
bedac9ff	299	STATIC OP (dd_old_ck_entereval)(pTHX_ OP *op);
bedac9ff	300
b7505981	301	OP* dd_pp_entereval(pTHX) {
	302	dSP;
	303	dPOPss;
	304	STRLEN len;
	305	const char* s;
	306	if (SvPOK(sv)) {
53e3ab32	307	#ifdef DD_DEBUG
b7505981	308	printf("mangling eval sv\n");
53e3ab32	309	#endif
b7505981	310	if (SvREADONLY(sv))
	311	sv = sv_2mortal(newSVsv(sv));
	312	s = SvPVX(sv);
	313	len = SvCUR(sv);
	314	if (!len \|\| s[len-1] != ';') {
	315	if (!(SvFLAGS(sv) & SVs_TEMP))
	316	sv = sv_2mortal(newSVsv(sv));
	317	sv_catpvn(sv, "\n;", 2);
53e3ab32	318	}
b7505981	319	SvGROW(sv, 8192);
53e3ab32	320	}
b7505981	321	PUSHs(sv);
	322	return PL_ppaddr[OP_ENTEREVAL](aTHX);
	323	}
53e3ab32	324
b7505981	325	STATIC OP dd_ck_entereval(pTHX_ OP o) {
b7505981	326	o = dd_old_ck_entereval(aTHX_ o); /* let the original do its job */
d8e65fc8	327	if (o->op_ppaddr == PL_ppaddr[OP_ENTEREVAL])
d8e65fc8	328	o->op_ppaddr = dd_pp_entereval;
94caac6e	329	return o;
	330	}
	331
6a0bcf35	332	static I32 dd_filter_realloc(pTHX_ int idx, SV *sv, int maxlen)
	333	{
	334	const I32 count = FILTER_READ(idx+1, sv, maxlen);
	335	SvGROW(sv, 8192); /* please try not to have a line longer than this :) */
	336	/* filter_del(dd_filter_realloc); */
	337	return count;
	338	}
	339
bedac9ff	340	STATIC OP (dd_old_ck_const)(pTHX_ OP*op);
	341
	342	STATIC OP dd_ck_const(pTHX_ OP o) {
bedac9ff	343	int dd_flags;
	344	char* s;
	345	char tmpbuf[sizeof PL_tokenbuf];
	346	char found_name[sizeof PL_tokenbuf];
	347	STRLEN len = 0;
	348
	349	o = dd_old_ck_const(aTHX_ o); /* let the original do its job */
	350
bedac9ff	351	/* don't try and look this up if it's not a string const */
	352	if (!SvPOK(cSVOPo->op_sv))
	353	return o;
	354
a9fb5fb1	355	dd_flags = dd_is_declarator(aTHX_ SvPVX(cSVOPo->op_sv));
bedac9ff	356
a9fb5fb1	357	if (dd_flags == -1)
bedac9ff	358	return o;
bedac9ff	359
bedac9ff	360	if (!(dd_flags & DD_HANDLE_NAME))
	361	return o; /* if we're not handling name, method intuiting not an issue */
	362
	363	#ifdef DD_DEBUG
	364	printf("Think I found a declarator %s\n", PL_tokenbuf);
	365	printf("linestr: %s\n", SvPVX(PL_linestr));
	366	#endif
	367
	368	s = PL_bufptr;
	369
	370	while (s < PL_bufend && isSPACE(*s)) s++;
	371	if (memEQ(s, PL_tokenbuf, strlen(PL_tokenbuf)))
	372	s += strlen(PL_tokenbuf);
	373
	374	DD_DEBUG_S
	375
	376	/* find next word */
	377
	378	s = skipspace(s);
	379
	380	DD_DEBUG_S
	381
	382	/* arg 4 is allow_package */
	383
	384	s = scan_word(s, tmpbuf, sizeof tmpbuf, dd_flags & DD_HANDLE_PACKAGE, &len);
	385
	386	DD_DEBUG_S
	387
	388	if (len) {
	389	const char* old_start = SvPVX(PL_linestr);
	390	int start_diff;
	391	const int old_len = SvCUR(PL_linestr);
	392
	393	strcpy(found_name, tmpbuf);
	394	#ifdef DD_DEBUG
	395	printf("Found %s\n", found_name);
	396	#endif
	397
	398	s -= len;
	399	SvGROW(PL_linestr, (STRLEN)(old_len + 2));
	400	if (start_diff = SvPVX(PL_linestr) - old_start) {
	401	Perl_croak(aTHX_ "forced to realloc PL_linestr for line %s, bailing out before we crash harder", SvPVX(PL_linestr));
	402	}
	403	memmove(s+2, s, (PL_bufend - s)+1);
	404	*s = ':';
	405	s++;
	406	*s = ':';
	407	SvCUR_set(PL_linestr, old_len + 2);
	408	PL_bufend += 2;
	409	}
	410	return o;
	411	}
	412
94caac6e	413	static int initialized = 0;
	414
	415	MODULE = Devel::Declare PACKAGE = Devel::Declare
	416
	417	PROTOTYPES: DISABLE
	418
	419	void
	420	setup()
	421	CODE:
	422	if (!initialized++) {
	423	dd_old_ck_rv2cv = PL_check[OP_RV2CV];
	424	PL_check[OP_RV2CV] = dd_ck_rv2cv;
b7505981	425	dd_old_ck_entereval = PL_check[OP_ENTEREVAL];
b7505981	426	PL_check[OP_ENTEREVAL] = dd_ck_entereval;
bedac9ff	427	dd_old_ck_const = PL_check[OP_CONST];
bedac9ff	428	PL_check[OP_CONST] = dd_ck_const;
94caac6e	429	}
6a0bcf35	430	filter_add(dd_filter_realloc, NULL);