From: matthewt <matthewt@bd8105ee-0ff8-0310-8827-fb3f25b6796d>
Date: Wed, 4 Jun 2008 14:30:26 +0000 (+0000)
Subject: make 'method main' work
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=8f2a4621f3860068de4a4385d31365a2eca4ef94;p=p5sagit%2FDevel-Declare.git

make 'method main' work

git-svn-id: http://dev.catalyst.perl.org/repos/bast/trunk/Devel-Declare@4465 bd8105ee-0ff8-0310-8827-fb3f25b6796d
---

diff --git a/Changes b/Changes
index f1f490d..e80ef14 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,8 @@
 Changes for Devel-Declare
 
+0.001011
+  - add support for 'method main' and other package names
+
 0.001010
   - fix traits code, again, so it compiles on 5.10.
 
diff --git a/Declare.xs b/Declare.xs
index 1cd3434..28950eb 100644
--- a/Declare.xs
+++ b/Declare.xs
@@ -33,17 +33,14 @@
 #define LEX_NORMAL    10
 #define LEX_INTERPNORMAL   9
 
-/* placeholders for PL_check entries we wrap */
-
-STATIC OP *(*dd_old_ck_rv2cv)(pTHX_ OP *op);
-STATIC OP *(*dd_old_ck_entereval)(pTHX_ OP *op);
-
 /* flag to trigger removal of temporary declaree sub */
 
 static int in_declare = 0;
 
 /* 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;
@@ -157,6 +154,12 @@ STATIC OP *dd_ck_rv2cv(pTHX_ OP *o) {
 
     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);
@@ -277,6 +280,8 @@ STATIC OP *dd_ck_rv2cv(pTHX_ OP *o) {
   return o;
 }
 
+STATIC OP *(*dd_old_ck_entereval)(pTHX_ OP *op);
+
 OP* dd_pp_entereval(pTHX) {
   dSP;
   dPOPss;
@@ -316,6 +321,102 @@ static I32 dd_filter_realloc(pTHX_ int idx, SV *sv, int maxlen)
   return count;
 }
 
+STATIC OP *(*dd_old_ck_const)(pTHX_ OP*op);
+
+STATIC OP *dd_ck_const(pTHX_ OP *o) {
+  HV* is_declarator;
+  SV** is_declarator_pack_ref;
+  HV* is_declarator_pack_hash;
+  SV** is_declarator_flag_ref;
+  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 */
+
+  is_declarator = get_hv("Devel::Declare::declarators", FALSE);
+
+  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 o; /* not a hashref */
+
+  is_declarator_pack_hash = (HV*) SvRV(*is_declarator_pack_ref);
+
+  /* don't try and look this up if it's not a string const */
+  if (!SvPOK(cSVOPo->op_sv))
+    return o;
+
+  is_declarator_flag_ref = hv_fetch(
+    is_declarator_pack_hash, SvPVX(cSVOPo->op_sv),
+    strlen(SvPVX(cSVOPo->op_sv)), 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 o;
+
+  dd_flags = SvIVX(*is_declarator_flag_ref);
+
+  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
@@ -330,5 +431,7 @@ setup()
     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);
diff --git a/lib/Devel/Declare.pm b/lib/Devel/Declare.pm
index 3edd596..1840ec0 100644
--- a/lib/Devel/Declare.pm
+++ b/lib/Devel/Declare.pm
@@ -4,7 +4,7 @@ use strict;
 use warnings;
 use 5.008001;
 
-our $VERSION = '0.001010';
+our $VERSION = '0.001011';
 
 # mirrored in Declare.xs as DD_HANDLE_*
 
diff --git a/t/sugar.t b/t/sugar.t
index 0f1b685..a582e4b 100644
--- a/t/sugar.t
+++ b/t/sugar.t
@@ -58,6 +58,8 @@ my ($test_method1, $test_method2, @test_list);
     return join(', ', ref $self, $what);
   };
 
+  method main () { return "main"; };
+
   #@test_list = method { 1 }, sub { 2 }, method () { 3 }, sub { 4 };
 
 }
@@ -72,6 +74,8 @@ is($o->{attr}, 'value', '@_ args ok');
 
 is($o->foo('yay'), 'DeclareTest: Foo: yay', 'method with argument ok');
 
+is($o->main, 'main', 'declaration of package named method ok');
+
 $o->upgrade;
 
 isa_ok($o, 'DeclareTest2');