X-Git-Url: https://www.kengrimes.com/gitweb/?p=henge%2Fapc.git;a=blobdiff_plain;f=src%2Fir.c;h=706f677fcbe46ed44fa107d6f955e4110bc2c866;hp=49480ab2def18b7a91f252103dbb6d96b6df7650;hb=ee18200a9d3817728d6d09745cd29900649d4508;hpb=0dc97f87cbbe47ef84501678f302404d042428b1

diff --git a/src/ir.c b/src/ir.c
index 49480ab..706f677 100644
--- a/src/ir.c
+++ b/src/ir.c
@@ -14,186 +14,662 @@
 #include <unistd.h>   //u8_* functions
 #include <unitypes.h> //uint8_t as a char
 #include <unistr.h>   //u32_cpy
+#include <unistdio.h> //ulc_fprintf
 /* Local */
+#include "print.h"
 #include "apc.h"
 #include "ir.h"
+#undef  do_error
+#define do_error(...) exit(-1)
+#define XXH_PRIVATE_API
+#include "../xxHash/xxhash.h"
 /* Public */
 int      ir_init(void);
+void     ir_quit(void);
+void     ir_test(void);
 int      ir_linker(void);
 int      ir_condenser(void);
-#if 0
-ir_class ir_class_findchild(ir_class, uint8_t*);
-ir_set   ir_class_rootset(ir_class);
-ir_class ir_class_nextsib(ir_class);
-ir_class ir_class_nextchild(ir_class);
-uint8_t* ir_class_name(ir_class);
-ir_set   ir_class_findset(ir_class,uint8_t*);
-ir_set   ir_set_findchild(ir_set, uint8_t*);
-ir_set   ir_set_nextsib(ir_set);
-ir_set   ir_set_nextchild(ir_set);
-ir_set   ir_set_findref(long long);
-uint8_t* ir_set_name(ir_set);
-#endif
-/* Private */
-static inline
-uint8_t bytes_identical(uint8_t*,uint8_t*);
-
-/* Enumerated types */
-enum dtype { FSDAT, MSDAT, ADAT, LDAT };
-enum ltype { OLINK, MLINK, VLINK, ALINK };
+/* Memory allocation structures */
+struct pagenode_t;
+struct pagenode_header_t {
+  struct pagenode_t* next;
+  char*              head;
+};
+struct pagenode_t {
+  struct pagenode_header_t header;
+  char                     root[];
+};
+struct pagelist_t {
+  struct pagenode_t* root, * head;
+  size_t             pagesize;
+};
+#define SYS_PAGESIZE     (sys_pagesize)
+#define NAME_PAGESIZE    (APC_NAME_MAX * 1024)
+#define PL_HEADERSIZE    (sizeof(struct pagenode_header_t))
+#define PL_HEADSIZE(_PL) (_PL.head->header.head - _PL.head->root)
+#define PL_HEADMEM(_PL)  (_PL.pagesize - PL_HEADERSIZE - PL_HEADSIZE(_PL))
 /* Set data mem */
-struct sdat_header_t
-{ enum dtype type;
-  uint8_t* src_file_name;
-  uint8_t* data_name;
+enum dtype { FSDAT, MSDAT, ADAT, LDAT, FBDAT };
+struct ir_namelist_t;
+struct ir_namelist_t
+{ struct ir_namelist_t* nextsib;
+  uint8_t*              name;
 };
-struct frameinfo_t
-{ int facing, w, h;
+struct ir_classld_t
+{ struct ir_class_t*    root_class;
+  struct ir_namelist_t* namelist, * namelist_head;
 };
-struct framedata_t
-{ struct sdat_header_t header;
-  struct frameinfo_t   frameinfo;
-} **framedatas;
-struct framebox_t
-{ struct framedata_t framesheets[FACE_MAX];
-  struct framedata_t mapsheets[FACE_MAX];
-  uint8_t            *data_name;
-} **frameboxes;
-struct simplex_t
-{ struct sdat_header_t header;
-} **simplexes;
-struct link_t
-{ struct sdat_header_t header;
-  struct set_t         *src, *trg;
-  enum ltype           type;
-} **links;
-union sdat_t
-{ struct sdat_header_t header;
-  struct framedata_t   framesheet;
-  struct framedata_t   mapsheet;
-  struct simplex_t     audio;
-  struct link_t        link;
+struct ir_setld_t
+{ struct ir_classld_t*  classld;
+  long long             ref;
+  struct ir_namelist_t* namelist, * namelist_head;
 };
-struct ir_class
-{ struct class_t *parent, *nextchild, *nextsib;
-  struct set_t   *root_set;
-  uint8_t        *name;
-} **classes;
-struct ir_set
-{ struct set_t      *parent, *nextchild, *nextsib;
-  struct class_t    *class;
-  uint8_t           *name;
-  struct framebox_t **sprites;
-  struct framebox_t **maps;
-  struct simplex_t  **audio;
-  struct link_t     **links;
-} **sets;
-/* Function-Like Macros */
-#define do_warn() do {				\
-  } while (0)
-#define wprint(str) do {			\
-    fprintf(stderr, str);			\
-    do_warn();					\
-  } while (0)
-#define wprintf(fmt,...) do {			\
-    fprintf(stderr, fmt, __VA_ARGS__);		\
-    do_warn();					\
-  } while (0)
-#define do_error() do {				\
-    exit(-1);					\
-  } while (0)
-#define eprint(str) do {			\
-    fprintf(stderr, str);			\
-    do_error();					\
+struct ir_setdata_header_t
+{ enum dtype          type;
+  uint8_t*            src_filename, * data_name;
+  union ir_setdata_t* nextsib;
+};
+struct ir_frameinfo_t
+{ int facing, w, h; };
+struct ir_framedata_t
+{ struct ir_setdata_header_t header;
+  struct ir_frameinfo_t      frameinfo;
+};
+struct ir_framebox_t
+{ struct ir_setdata_header_t header;
+  struct ir_framedata_t      framesheets[FACING_MAX];
+  struct ir_framedata_t      mapsheets[FACING_MAX];
+};
+struct ir_simplex_t { struct ir_setdata_header_t header; };
+struct ir_link_t
+{ struct ir_setdata_header_t header;
+  struct ir_classld_t*       classld;
+  struct ir_setld_t*         setld;
+  enum ltype                 type;
+};
+union ir_setdata_t
+{ struct ir_setdata_header_t  header;
+  struct ir_framebox_t        framebox;
+  struct ir_framedata_t       framesheet;
+  struct ir_framedata_t       mapsheet;
+  struct ir_simplex_t         audio;
+  struct ir_link_t            link;
+};
+struct ir_class_t
+{ struct ir_class_t* nextchild, * nextsib;
+  struct ir_set_t*   root_set;
+  uint8_t*           name;
+};
+struct ir_set_t
+{ struct ir_set_t*      nextchild, * nextsib;
+  struct ir_class_t*    class;
+  uint32_t              ref;
+  uint8_t*              name;
+  struct ir_framebox_t* frameboxes;
+  struct ir_simplex_t*  audio;
+  struct ir_link_t*     links;
+};
+/* Functions */
+static inline
+struct ir_framebox_t* ir_set_add_framebox(struct ir_set_t*,const uint8_t*);
+static inline
+union ir_setdata_t*   ir_framedata (enum dtype,const uint8_t*,apc_facing,int,int);
+static inline
+int      bytes_identical(const uint8_t*,const uint8_t*);
+static inline
+int      classnames_identical(const uint8_t*,const uint8_t*);
+static
+void*    stack_alloc(size_t);
+#define  struct_alloc(_T) ((struct _T*) stack_alloc(sizeof(struct _T)))
+static
+uint8_t* name_alloc(const uint8_t*);
+static
+uint8_t* classname_alloc(const uint8_t*);
+static inline
+void*    pagelist_pop(struct pagelist_t*,size_t);
+#define  pagelist_alloc(pagelist) do {					\
+    pagelist.head->header.next = (struct pagenode_t*) calloc(pagelist.pagesize,1); \
+    if (pagelist.head->header.next == NULL)				\
+      eprintf("Memory allocation error\n");				\
+    pagelist.head = pagelist.head->header.next;				\
+    pagelist.head->header.head = pagelist.head->root;			\
   } while (0)
-#define eprintf(fmt,...) do {			\
-    fprintf(stderr, fmt, __VA_ARGS__);		\
-    do_error();					\
+#define  pagelist_init(pagelist,size) do {			\
+    pagelist.pagesize = size;					\
+    pagelist.root = (struct pagenode_t*) calloc(size,1);	\
+    if (pagelist.root == NULL)					\
+      eprintf("Memory allocation error\n");			\
+    pagelist.root->header.head = pagelist.root->root;		\
+    pagelist.head = pagelist.root;				\
   } while (0)
+static
+void     pagenode_free(struct pagenode_t*);
+#define  REFHASH(ref) (XXH32(&ref, sizeof(uint32_t), 0xCEED) & 0xCFF)
 
+extern //apc.c
+long     sys_pagesize;
+static
+struct pagelist_t datapages, namepages, refhashpages;
 static
-struct ir_class root_class = { .name = &"." };
+struct ir_class_t root_class = { .name = (uint8_t*)"." };
 
 /* Init */
 int ir_init
 ( void )
+{ pagelist_init(datapages, (size_t)SYS_PAGESIZE);
+  pagelist_init(namepages, (size_t)NAME_PAGESIZE);
+  pagelist_init(refhashpages, (size_t)SYS_PAGESIZE);
+  return 0;
+}
+
+/* Quit/Cleanup */
+void ir_quit
+( void )
+{ pagenode_free(datapages.root);
+  pagenode_free(namepages.root);
+  pagenode_free(refhashpages.root);
+}
+
+/* Recursively clean pagenode linked list, freeing last first */
+static
+void pagenode_free
+( struct pagenode_t* pagenode )
+{ if (pagenode->header.next != NULL)
+    pagenode_free(pagenode->header.next);
+  free(pagenode);
+}
+
+/* Link */
+int ir_linker
+( void )
+{ 
+  return 0;
+}
+
+/* Condense */
+int ir_condenser
+( void )
 { return 0; }
 
+/* Return the class's name string */
+uint8_t* ir_class_name
+( struct ir_class_t* class )
+{ return class->name; }
+
 /* Return a pointer to the root class */
 struct ir_class_t* ir_class_root
 ( void )
 { return &root_class; }
 
 /* Add a subclass to a class
-   Attempts to create a new subclass in the provided class, exiting with an
-   error if the class already exists
+   Attempts to create a new subclass in the provided class, returning
+   the class if it already exists
 */
-#define ERR_DUPECLASS "Subclass %s of class %s already exists!", name, *class.name
 struct ir_class_t* ir_class_addchild
 ( struct ir_class_t* class,
-  uint8_t*           name
-)
-{ struct ir_class_t* iter = *class.nextchild;
-  if (iter == NULL)
-    return *class.nextchild = class_alloc(name);
- iterate:
-  if (bytes_identical(*iter.name, name))
-    { fprintf(stderr, ERR_DUPECLASS);
-      exit(-1);
-    }
-  if (*iter.nextsib != NULL)
-    { iter = *iter.nextsib;
-      goto iterate;
+  const uint8_t*     name
+)
+{ struct ir_class_t* iter;
+  if (class->nextchild == NULL)
+    goto alloc;
+  iter = class->nextchild;
+  if (iter->name == NULL)
+    eprintf("Null name pointer in class %p\n", iter);
+  if (name == NULL)
+    eprintf("Null child added to class %s\n", iter->name);
+ check:
+  if (classnames_identical(iter->name, name))
+    return iter;
+  if (iter->nextsib != NULL)
+    { iter = iter->nextsib;
+      goto check;
     }
-  return *iter.nextsib = class_alloc(name);
-
+ alloc:
+  iter = struct_alloc(ir_class_t);
+  iter->nextsib = class->nextchild;
+  iter->name = classname_alloc(name);
+  return class->nextchild = iter;
 }
 
-/* Return a pointer to the parent of the provided class */
-struct ir_class_t* ir_class_parent
-( struct ir_class_t* class )
-{ return class.parent; }
-
 /* Add a set to a class
-   Attempts to create a new root set in the specified class, exiting with an
-   error if the set already exists
+   Attempts to create a new root set in the specified class, returning
+   the set if it already exists
 */
-#define ERR_DUPESET "Root set %s of class %s already exists!", name, *class.name
 struct ir_set_t* ir_class_addset
 ( struct ir_class_t* class,
-  uint8_t*           name
-)
-{ struct ir_set_t* iter = *class.root_set;
-  if (iter == NULL)
-    return *class.root_set = set_alloc(name);
- iterate:
-  if (bytes_identical(*iter.name, name))
-    { fprintf(stderr, ERR_DUPSET);
-      exit(-1);
-    }
-  if (*iter.nextsib != NULL)
-    { iter = *iter.nextsib;
-      goto iterate;
+  const uint8_t*     name
+)
+{ struct ir_set_t* iter;
+  if (class->root_set == NULL)
+    goto alloc;
+  iter = class->root_set;
+  if (iter->name == NULL)
+    eprintf("Null name pointer in class %p\n", iter);
+  if (name == NULL)
+    eprintf("Null set added to class %U\n", iter->name);
+ check:
+  if (bytes_identical(iter->name, name))
+    return iter;
+  if (iter->nextsib != NULL)
+    { iter = iter->nextsib;
+      goto check;
     }
-  return *iter.nextsib = set_alloc(name);
+ alloc:
+  iter = struct_alloc(ir_set_t);
+  iter->nextsib = class->root_set;
+  iter->name = name_alloc(name);
+  return class->root_set = iter;
 }
 
+struct ir_set_t* ir_set_from_ref
+( uint32_t ref )
+{ uint16_t hash;
+  struct ir_set_t** iters;
+  struct pagenode_t* iterp;
+  iterp = refhashpages.root;
+  hash = REFHASH(ref);
+  do
+    iters = ((struct ir_set_t**) iterp->root) + hash;
+  while (*iters != NULL && (*iters)->ref != ref && (iterp = iterp->header.next) != NULL);
+  return *iters;
+}
+
+
+/* Add a set to a set
+   Attempts to create a new subset of the specified set, returning the
+   child if it already exists
+*/
 struct ir_set_t* ir_set_addchild
 ( struct ir_set_t* set,
-  uint8_t*         name
+  const uint8_t*   name
 )
-{ }
+{ struct ir_set_t* iter;
+  if (set->nextchild == NULL)
+    goto alloc;
+  iter = set->nextchild;
+  if (iter->name == NULL)
+    eprintf("Null name pointer in set %p\n", iter);
+  if (name == NULL)
+    eprintf("Null child added to set %s\n", iter->name);
+ check:
+  if (bytes_identical(iter->name, name))
+    return iter;
+  if (iter->nextsib != NULL)
+    { iter = iter->nextsib;
+      goto check;
+    }
+ alloc:
+  iter = struct_alloc(ir_set_t);
+  iter->nextsib = set->nextchild;
+  iter->name = name_alloc(name);
+  return set->nextchild = iter;
+}
+
+/* Add a framebox to a set
+   Attempts to create a new framebox of the specified set, returning
+   the framebox if it already exists
+*/
+static inline
+struct ir_framebox_t* ir_set_add_framebox
+( struct ir_set_t* set,
+  const uint8_t*   name
+)
+{ struct ir_framebox_t* iter;
+  if (set->frameboxes == NULL)
+    goto alloc;
+  iter = set->frameboxes;
+ check:
+  if (bytes_identical(iter->header.data_name, name))
+    return iter;
+  if (iter->header.nextsib != NULL)
+    { iter = (struct ir_framebox_t*) iter->header.nextsib;
+      goto check;
+    }
+ alloc:
+  iter = struct_alloc(ir_framebox_t);
+  iter->header.nextsib = (union ir_setdata_t*) set->frameboxes;
+  iter->header.data_name = name_alloc(name);
+  return set->frameboxes = iter;
+}
 
 /* Match two null-terminated bytestrings
    Return 1 if the two bytestrings are identical, else 0
 */
 static inline
-uint8_t bytes_identical
-( uint8_t* stra,
-  uint8_t* strb
-)
-{ while (*stra && *strb)
-    if (*stra++ != *strb++)
-      return 0;
-  return *stra == *strb;
+int bytes_identical
+( const uint8_t* stra,
+  const uint8_t* strb
+)
+{ int ca, cb;
+  do {
+    ca = *stra++;
+    cb = *strb++;
+  } while (ca && ca != '_' && ca == cb);
+  return (ca == cb);
+}
+
+static inline
+int classnames_identical
+( const uint8_t* stra,
+  const uint8_t* strb
+)
+{ int ca, cb;
+  do {
+    ca = *stra++;
+    cb = *strb++;
+  } while (ca && ca == cb);
+  return (ca == cb);
+}
+
+/* Assign Setdata to Set  */
+void ir_set_assign_data
+( struct ir_set_t*      set,
+  union  ir_setdata_t*  setdata
+)
+{ struct ir_framebox_t* framebox;
+  struct ir_simplex_t*  simplex;
+  switch (setdata->header.type)
+    { case FSDAT:
+	framebox = ir_set_add_framebox(set, setdata->header.data_name);
+	if (framebox->framesheets[setdata->framesheet.frameinfo.facing].header.data_name != NULL)
+	  wprintf("Duplicate framesheet [%i] %s\n",
+		  setdata->framesheet.frameinfo.facing, setdata->header.data_name);
+	framebox->framesheets[setdata->framesheet.frameinfo.facing] = setdata->framesheet;
+	break;
+      case MSDAT:
+	framebox = ir_set_add_framebox(set, setdata->header.data_name);
+	if (framebox->mapsheets[setdata->mapsheet.frameinfo.facing].header.data_name != NULL)
+	  wprintf("Duplicate mapsheet [%i] %s\n",
+		  setdata->mapsheet.frameinfo.facing, setdata->header.data_name);
+	framebox->mapsheets[setdata->mapsheet.frameinfo.facing] = setdata->mapsheet;
+	break;
+      case ADAT:
+	if (set->audio == NULL)
+	  { set->audio = (struct ir_simplex_t*) setdata;
+	    return;
+	  }
+	simplex = set->audio;
+	while (simplex->header.nextsib != NULL)
+	  if (bytes_identical(simplex->header.data_name, setdata->header.data_name))
+	    { wprintf("Duplicate audio %s\n", setdata->header.data_name);
+	      *simplex = setdata->audio;
+	      //setdata is now a pointer to redundant, unused memory.
+	      return;
+	    }
+	  else
+	    simplex = (struct ir_simplex_t*) simplex->header.nextsib;
+	setdata->audio.header.nextsib = (union ir_setdata_t*) set->audio;
+        set->audio = (struct ir_simplex_t*) setdata;
+	break;
+      case LDAT:
+	setdata->link.header.nextsib = (union ir_setdata_t*) set->links;
+	set->links = (struct ir_link_t*) setdata;
+	break;
+      default:
+	fprintf(stderr, "Unknown setdata type %x\n", setdata->header.type);
+	exit(-1);
+    }
+}
+
+void ir_set_assign_ref
+( struct ir_set_t* set,
+  uint32_t         ref
+)
+{ uint16_t hash, oldhash;
+  struct ir_set_t** iters;
+  struct pagenode_t* iterp;
+  uint32_t           oldref;
+  oldref = set->ref;
+  oldhash = 0;
+  hash = REFHASH(ref);
+  iterp = refhashpages.root;
+ check_depth:
+  iters = ((struct ir_set_t**) iterp->root) + hash;
+  if (*iters == NULL || *iters == set)
+    *iters = set;
+  else
+    { if (iterp->header.next == NULL)
+	pagelist_alloc(refhashpages);
+      iterp = iterp->header.next;
+      goto check_depth;
+    }
+  if (oldref != 0)
+    { wprintf("Ref override: 0x%x -> 0x%x for set %s\n", oldref, ref, set->name);
+      if (oldhash != 0)
+	*iters = NULL;
+      else
+	{ oldhash = hash;
+	  hash = REFHASH(oldref);
+	  goto check_depth;
+	}
+    }
+  set->ref = ref;
+}
+
+void ir_data_assign_path
+( union ir_setdata_t* setdata,
+  const uint8_t*      path
+)
+{ if (path == NULL)
+    eprintf("Null path in data %s\n", setdata->header.data_name);
+  if (setdata->header.src_filename != NULL)
+    wprintf("Path override: %s -> %s for setdata %s\n",
+	    setdata->header.src_filename, path, setdata->header.data_name);
+  setdata->header.src_filename = name_alloc(path);
+}
+
+union ir_setdata_t* ir_framesheet
+( const uint8_t* name,
+  apc_facing     d,
+  int            width,
+  int            height
+)
+{ return ir_framedata(FSDAT, name, d, width, height); }
+
+union ir_setdata_t* ir_mapsheet
+( const uint8_t* name,
+  apc_facing     d,
+  int            width,
+  int            height
+)
+{ return ir_framedata(MSDAT, name, d, width, height); }
+
+static inline
+union ir_setdata_t* ir_framedata
+( enum dtype     type,
+  const uint8_t* name,
+  apc_facing     d,
+  int            width,
+  int            height
+)
+{ struct ir_framedata_t* framedata = struct_alloc(ir_framedata_t);
+  if (name == NULL)
+    eprintf("Null name in set allocation\n");
+  framedata->header.type = type;
+  framedata->header.data_name = name_alloc(name);
+  framedata->frameinfo.facing = d;
+  framedata->frameinfo.w = width;
+  framedata->frameinfo.h = height;
+  return (union ir_setdata_t*) framedata;
+}
+
+union ir_setdata_t* ir_audio
+( const uint8_t* name )
+{ struct ir_simplex_t* audio = struct_alloc(ir_simplex_t);
+  if (name == NULL)
+    eprintf("Null audio\n");
+  audio->header.type = ADAT;
+  audio->header.data_name = name_alloc(name);
+  return (union ir_setdata_t*) audio;
+}
+
+
+/* Create classld that points to a class */
+struct ir_classld_t* ir_classld_from_class
+( struct ir_class_t* class )
+{ struct ir_classld_t* classld;
+  if (class == NULL)
+    eprintf("Null class in classld\n");
+  classld = struct_alloc(ir_classld_t);
+  classld->root_class = class;
+  return classld;
+}
+
+struct ir_setld_t* ir_setld_from_ref
+( uint32_t ref )
+{ struct ir_setld_t* setld;
+  setld = struct_alloc(ir_setld_t);
+  setld->ref = ref;
+  return setld;
+}
+
+struct ir_setld_t* ir_setld_from_classld
+( struct ir_classld_t* classld,
+  const uint8_t*       name
+)
+{ struct ir_setld_t* setld;
+  setld = struct_alloc(ir_setld_t);
+  setld->namelist = struct_alloc(ir_namelist_t);
+  setld->namelist_head = setld->namelist;
+  setld->namelist_head->name = name_alloc(name);
+  setld->classld = classld;
+  return setld; 
+}
+
+struct ir_setld_t* ir_setld_addchild
+( struct ir_setld_t* setld,
+  const uint8_t*     name
+)
+{ if (setld->namelist == NULL)
+    { setld->namelist = struct_alloc(ir_namelist_t);
+      setld->namelist_head = setld->namelist;
+    }
+  else
+    { setld->namelist_head->nextsib = struct_alloc(ir_namelist_t);
+      setld->namelist_head = setld->namelist_head->nextsib;
+    }
+  setld->namelist_head->name = name_alloc(name);
+  return setld;
+}
+
+union ir_setdata_t* ir_link
+( enum ltype         link_type,
+  struct ir_setld_t* setld,
+  const uint8_t*     name
+)
+{ struct ir_link_t* link;
+  link = struct_alloc(ir_link_t);
+  link->header.type = LDAT;
+  link->type = link_type; 
+  link->classld = setld->classld;
+  link->setld = setld;
+  if (link_type != OLINK && name != NULL)
+    link->header.data_name = name_alloc(name);
+  return (union ir_setdata_t*) link;
+}
+
+static inline
+void* pagelist_pop
+( struct pagelist_t* pagelist,
+  size_t             size
+)
+{ size_t headsize = PL_HEADSIZE((*pagelist));
+  if (!headsize)
+    { free(pagelist->head);
+      pagelist->head = pagelist->root;
+      while (pagelist->head->header.next != NULL)
+	pagelist->head = pagelist->head->header.next;
+    }
+  if (headsize < size)
+    eprintf("Attempted to pop unaligned value from pagelist\n");
+  pagelist->head->header.head -= size;
+  return pagelist->head->header.head;
+}
+
+static
+void* stack_alloc
+( size_t bytes )
+{ if (PL_HEADMEM(datapages) < bytes) 
+    pagelist_alloc(datapages);
+  datapages.head->header.head += bytes;
+  return (void*) datapages.head->header.head - bytes;
+}
+
+static
+uint8_t* name_alloc
+( const uint8_t* name_src )
+{ const uint8_t* iter;
+  uint8_t*       name;
+  int            head_mem;
+ copy:
+  name = (uint8_t*)namepages.head->header.head;
+  iter = name_src;
+  for (head_mem = PL_HEADMEM(namepages); *iter && *iter != '_' && head_mem; head_mem--)
+    *(namepages.head->header.head)++ = *iter++;
+  if (head_mem == 0) //not enough room
+    { pagelist_alloc(namepages);
+      goto copy;
+    }
+  *(namepages.head->header.head)++ = '\0';
+  return name;
+}
+
+static
+uint8_t* classname_alloc
+( const uint8_t* name_src )
+{ const uint8_t* iter;
+  uint8_t*       name;
+  int            head_mem;
+ copy:
+  name = (uint8_t*)namepages.head->header.head;
+  iter = name_src;
+  for (head_mem = PL_HEADMEM(namepages); *iter && head_mem; head_mem--)
+    *(namepages.head->header.head)++ = *iter++;
+  if (head_mem == 0) //not enough room
+    { pagelist_alloc(namepages);
+      goto copy;
+    }
+  *(namepages.head->header.head)++ = '\0';
+  return name;
+}
+
+#define pdepth() do { for (i = 0; i < depth * 2; i++) putchar(' '); } while (0)
+void     ir_test(void)
+{ struct ir_class_t* class, * classbuf;
+  struct ir_set_t* set, * set_child;
+  int depth, i, olddepth;
+  depth = olddepth = 0;
+  classbuf = NULL;
+  for(class = ir_class_root(); class != NULL; class = class->nextchild)
+    {handle_class:
+      pdepth();
+      uprintf("%U\n",class->name);
+      old_depth = depth;
+      set = class->root_set;
+    handle_set:
+      while(set != NULL)
+	{ pdepth();uprintf("|");
+	  pdepth();
+	  uprintf("-[%U]",set->name);
+	  set_child = set->nextchild;
+	  while (set_child != NULL)
+	    { depth++;
+	      uprintf("--[%U]",set_child->name);
+	      set_child = set_child->nextchild;
+	    }
+	  uprintf("\n");
+	  set = set->nextsib;
+	}
+      if (class->nextsib != NULL)
+	{ if (classbuf == NULL)
+	    classbuf = class;
+	  class = class->nextsib;
+	  goto handle_class;
+	}
+      if (classbuf != NULL)
+	class = classbuf;
+      classbuf = NULL;
+      uprintf("\n");
+      depth = olddepth + 1;
+    }
 }