From 6bdbb45e88e7b88b294dfb6e4cb493cbc3c8cf74 Mon Sep 17 00:00:00 2001
From: Joshua Haberman <joshua@reverberate.org>
Date: Sun, 13 Feb 2011 12:59:54 -0800
Subject: Merged core/ and stream/ -> src/.  The split wasn't worth it.

---
 core/upb_msg.c | 253 ---------------------------------------------------------
 1 file changed, 253 deletions(-)
 delete mode 100644 core/upb_msg.c

(limited to 'core/upb_msg.c')

diff --git a/core/upb_msg.c b/core/upb_msg.c
deleted file mode 100644
index 9dfbea4..0000000
--- a/core/upb_msg.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- * upb - a minimalist implementation of protocol buffers.
- *
- * Copyright (c) 2010 Joshua Haberman.  See LICENSE for details.
- *
- * Data structure for storing a message of protobuf data.
- */
-
-#include "upb_msg.h"
-#include "upb_decoder.h"
-#include "upb_strstream.h"
-
-static uint32_t upb_round_up_pow2(uint32_t v) {
-  // http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
-  v--;
-  v |= v >> 1;
-  v |= v >> 2;
-  v |= v >> 4;
-  v |= v >> 8;
-  v |= v >> 16;
-  v++;
-  return v;
-}
-
-static void upb_elem_free(upb_value v, upb_fielddef *f) {
-  switch(f->type) {
-    case UPB_TYPE(MESSAGE):
-    case UPB_TYPE(GROUP):
-      _upb_msg_free(upb_value_getmsg(v), upb_downcast_msgdef(f->def));
-      break;
-    case UPB_TYPE(STRING):
-    case UPB_TYPE(BYTES):
-      _upb_string_free(upb_value_getstr(v));
-      break;
-    default:
-      abort();
-  }
-}
-
-static void upb_elem_unref(upb_value v, upb_fielddef *f) {
-  assert(upb_elem_ismm(f));
-  upb_atomic_refcount_t *refcount = upb_value_getrefcount(v);
-  if (refcount && upb_atomic_unref(refcount))
-    upb_elem_free(v, f);
-}
-
-static void upb_field_free(upb_value v, upb_fielddef *f) {
-  if (upb_isarray(f)) {
-    _upb_array_free(upb_value_getarr(v), f);
-  } else {
-    upb_elem_free(v, f);
-  }
-}
-
-static void upb_field_unref(upb_value v, upb_fielddef *f) {
-  assert(upb_field_ismm(f));
-  upb_atomic_refcount_t *refcount = upb_value_getrefcount(v);
-  if (refcount && upb_atomic_unref(refcount))
-    upb_field_free(v, f);
-}
-
-
-/* upb_array ******************************************************************/
-
-upb_array *upb_array_new(void) {
-  upb_array *arr = malloc(sizeof(*arr));
-  upb_atomic_refcount_init(&arr->refcount, 1);
-  arr->size = 0;
-  arr->len = 0;
-  arr->ptr = NULL;
-  return arr;
-}
-
-void upb_array_recycle(upb_array **_arr, upb_fielddef *f) {
-  upb_array *arr = *_arr;
-  if(arr && upb_atomic_only(&arr->refcount)) {
-    arr->len = 0;
-  } else {
-    upb_array_unref(arr, f);
-    *_arr = upb_array_new();
-  }
-}
-
-void _upb_array_free(upb_array *arr, upb_fielddef *f) {
-  if (upb_elem_ismm(f)) {
-    // Need to release refs on sub-objects.
-    upb_valuetype_t type = upb_elem_valuetype(f);
-    for (upb_arraylen_t i = 0; i < arr->size; i++) {
-      upb_valueptr p = _upb_array_getptr(arr, f, i);
-      upb_elem_unref(upb_value_read(p, type), f);
-    }
-  }
-  free(arr->ptr);
-  free(arr);
-}
-
-void upb_array_resize(upb_array *arr, upb_fielddef *f, upb_arraylen_t len) {
-  size_t type_size = upb_types[f->type].size;
-  upb_arraylen_t old_size = arr->size;
-  if (old_size < len) {
-    // Need to resize.
-    size_t new_size = upb_round_up_pow2(len);
-    arr->ptr = realloc(arr->ptr, new_size * type_size);
-    arr->size = new_size;
-    memset(arr->ptr + (old_size * type_size), 0,
-           (new_size - old_size) * type_size);
-  }
-  arr->len = len;
-}
-
-
-/* upb_msg ********************************************************************/
-
-upb_msg *upb_msg_new(upb_msgdef *md) {
-  upb_msg *msg = malloc(md->size);
-  // Clear all set bits and cached pointers.
-  memset(msg, 0, md->size);
-  upb_atomic_refcount_init(&msg->refcount, 1);
-  return msg;
-}
-
-void _upb_msg_free(upb_msg *msg, upb_msgdef *md) {
-  // Need to release refs on all sub-objects.
-  upb_msg_iter i;
-  for(i = upb_msg_begin(md); !upb_msg_done(i); i = upb_msg_next(md, i)) {
-    upb_fielddef *f = upb_msg_iter_field(i);
-    upb_valueptr p = _upb_msg_getptr(msg, f);
-    upb_valuetype_t type = upb_field_valuetype(f);
-    if (upb_field_ismm(f)) upb_field_unref(upb_value_read(p, type), f);
-  }
-  free(msg);
-}
-
-void upb_msg_recycle(upb_msg **_msg, upb_msgdef *msgdef) {
-  upb_msg *msg = *_msg;
-  if(msg && upb_atomic_only(&msg->refcount)) {
-    upb_msg_clear(msg, msgdef);
-  } else {
-    upb_msg_unref(msg, msgdef);
-    *_msg = upb_msg_new(msgdef);
-  }
-}
-
-INLINE void upb_msg_sethas(upb_msg *msg, upb_fielddef *f) {
-  msg->data[f->set_bit_offset] |= f->set_bit_mask;
-}
-
-static upb_valueptr upb_msg_getappendptr(upb_msg *msg, upb_fielddef *f) {
-  upb_valueptr p = _upb_msg_getptr(msg, f);
-  if (upb_isarray(f)) {
-    // Create/recycle/resize the array if necessary, and find a pointer to
-    // a newly-appended element.
-    if (!upb_msg_has(msg, f)) {
-      upb_array_recycle(p.arr, f);
-      upb_msg_sethas(msg, f);
-    }
-    assert(*p.arr != NULL);
-    upb_arraylen_t oldlen = upb_array_len(*p.arr);
-    upb_array_resize(*p.arr, f, oldlen + 1);
-    p = _upb_array_getptr(*p.arr, f, oldlen);
-  }
-  return p;
-}
-
-static void upb_msg_appendval(upb_msg *msg, upb_fielddef *f, upb_value val) {
-  upb_valueptr p = upb_msg_getappendptr(msg, f);
-  if (upb_isstring(f)) {
-    // We do:
-    //  - upb_string_recycle(), upb_string_substr() instead of
-    //  - upb_string_unref(), upb_string_getref()
-    // because we can conveniently cache these upb_string objects in the
-    // upb_msg, whereas the upb_src who is sending us these strings may not
-    // have a good way of caching them.  This saves the upb_src from allocating
-    // new upb_strings all the time to give us.
-    //
-    // If you were using this to copy one upb_msg to another this would
-    // allocate string objects whereas a upb_string_getref could have avoided
-    // those allocations completely; if this is an issue, we could make it an
-    // option of the upb_msgpopulator which behavior is desired.
-    upb_string *src = upb_value_getstr(val);
-    upb_string_recycle(p.str);
-    upb_string_substr(*p.str, src, 0, upb_string_len(src));
-  } else {
-    upb_value_write(p, val, f->type);
-  }
-  upb_msg_sethas(msg, f);
-}
-
-upb_msg *upb_msg_appendmsg(upb_msg *msg, upb_fielddef *f, upb_msgdef *msgdef) {
-  upb_valueptr p = upb_msg_getappendptr(msg, f);
-  if (upb_isarray(f) || !upb_msg_has(msg, f)) {
-    upb_msg_recycle(p.msg, msgdef);
-    upb_msg_sethas(msg, f);
-  }
-  return *p.msg;
-}
-
-
-/* upb_msgpopulator ***********************************************************/
-
-void upb_msgpopulator_init(upb_msgpopulator *p) {
-  upb_status_init(&p->status);
-}
-
-void upb_msgpopulator_reset(upb_msgpopulator *p, upb_msg *m, upb_msgdef *md) {
-  p->top = p->stack;
-  p->limit = p->stack + sizeof(p->stack);
-  p->top->msg = m;
-  p->top->msgdef = md;
-}
-
-void upb_msgpopulator_uninit(upb_msgpopulator *p) {
-  upb_status_uninit(&p->status);
-}
-
-static upb_flow_t upb_msgpopulator_value(void *_p, upb_fielddef *f, upb_value val) {
-  upb_msgpopulator *p = _p;
-  upb_msg_appendval(p->top->msg, f, val);
-  return UPB_CONTINUE;
-}
-
-static upb_flow_t upb_msgpopulator_startsubmsg(void *_p, upb_fielddef *f,
-                                               upb_handlers *delegate_to) {
-  upb_msgpopulator *p = _p;
-  (void)delegate_to;
-  upb_msg *oldmsg = p->top->msg;
-  if (++p->top == p->limit) {
-    upb_seterr(&p->status, UPB_ERROR, "Exceeded maximum nesting");
-    return UPB_BREAK;
-  }
-  upb_msgdef *msgdef = upb_downcast_msgdef(f->def);
-  p->top->msgdef = msgdef;
-  p->top->msg = upb_msg_appendmsg(oldmsg, f, msgdef);
-  return UPB_CONTINUE;
-}
-
-static upb_flow_t upb_msgpopulator_endsubmsg(void *_p) {
-  upb_msgpopulator *p = _p;
-  --p->top;
-  return UPB_CONTINUE;
-}
-
-void upb_msgpopulator_register_handlers(upb_msgpopulator *p, upb_handlers *h) {
-  static upb_handlerset handlerset = {
-    NULL,   // startmsg
-    NULL,   // endmsg
-    &upb_msgpopulator_value,
-    &upb_msgpopulator_startsubmsg,
-    &upb_msgpopulator_endsubmsg,
-  };
-  upb_register_handlerset(h, &handlerset);
-  upb_set_handler_closure(h, p, &p->status);
-}
-- 
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