From: Behdad Esfahbod <behdad@behdad.org>
Date: Sat, 15 May 2010 02:02:37 +0000 (-0400)
Subject: Shortening buffer accessors: rename buffer->in_string to buffer->info
X-Git-Tag: submit/master/20120920.151126~7^2~652
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7e7007a1c9bf2c07a8369752126ece8fa6164248;p=framework%2Fuifw%2Fharfbuzz.git

Shortening buffer accessors: rename buffer->in_string to buffer->info
---

diff --git a/src/hb-buffer-private.hh b/src/hb-buffer-private.hh
index 9296fb5..16d3e19 100644
--- a/src/hb-buffer-private.hh
+++ b/src/hb-buffer-private.hh
@@ -114,7 +114,7 @@ struct _hb_buffer_t {
   unsigned int out_length;
   unsigned int in_pos;
 
-  hb_internal_glyph_info_t     *in_string;
+  hb_internal_glyph_info_t     *info;
   hb_internal_glyph_info_t     *out_string;
   hb_internal_glyph_position_t *positions;
 
diff --git a/src/hb-buffer.cc b/src/hb-buffer.cc
index 1f8f183..008105c 100644
--- a/src/hb-buffer.cc
+++ b/src/hb-buffer.cc
@@ -38,20 +38,20 @@ static hb_buffer_t _hb_buffer_nil = {
 
 /* Here is how the buffer works internally:
  *
- * There are two string pointers: in_string and out_string.  They
+ * There are two string pointers: info and out_string.  They
  * always have same allocated size, but different length and positions.
  *
- * As an optimization, both in_string and out_string may point to the
- * same piece of memory, which is owned by in_string.  This remains the
+ * As an optimization, both info and out_string may point to the
+ * same piece of memory, which is owned by info.  This remains the
  * case as long as out_length doesn't exceed in_length at any time.
  * In that case, swap() is no-op and the glyph operations operate mostly
  * in-place.
  *
- * As soon as out_string gets longer than in_string, out_string is moved over
+ * As soon as out_string gets longer than info, out_string is moved over
  * to an alternate buffer (which we reuse the positions buffer for!), and its
  * current contents (out_length entries) are copied to the alt buffer.
  * This should all remain transparent to the user.  swap() then switches
- * in_string and out_string.
+ * info and out_string.
  */
 
 /* XXX err handling */
@@ -62,14 +62,14 @@ static void
 hb_buffer_ensure_separate (hb_buffer_t *buffer, unsigned int size)
 {
   hb_buffer_ensure (buffer, size);
-  if (buffer->out_string == buffer->in_string)
+  if (buffer->out_string == buffer->info)
   {
     assert (buffer->have_output);
     if (!buffer->positions)
       buffer->positions = (hb_internal_glyph_position_t *) calloc (buffer->allocated, sizeof (buffer->positions[0]));
 
     buffer->out_string = (hb_internal_glyph_info_t *) buffer->positions;
-    memcpy (buffer->out_string, buffer->in_string, buffer->out_length * sizeof (buffer->out_string[0]));
+    memcpy (buffer->out_string, buffer->info, buffer->out_length * sizeof (buffer->out_string[0]));
   }
 }
 
@@ -110,7 +110,7 @@ hb_buffer_destroy (hb_buffer_t *buffer)
 
   hb_unicode_funcs_destroy (buffer->unicode);
 
-  free (buffer->in_string);
+  free (buffer->info);
   free (buffer->positions);
 
   free (buffer);
@@ -184,7 +184,7 @@ hb_buffer_clear (hb_buffer_t *buffer)
   buffer->in_length = 0;
   buffer->out_length = 0;
   buffer->in_pos = 0;
-  buffer->out_string = buffer->in_string;
+  buffer->out_string = buffer->info;
   buffer->max_lig_id = 0;
 }
 
@@ -201,15 +201,15 @@ hb_buffer_ensure (hb_buffer_t *buffer, unsigned int size)
     if (buffer->positions)
       buffer->positions = (hb_internal_glyph_position_t *) realloc (buffer->positions, new_allocated * sizeof (buffer->positions[0]));
 
-    if (buffer->out_string != buffer->in_string)
+    if (buffer->out_string != buffer->info)
     {
-      buffer->in_string = (hb_internal_glyph_info_t *) realloc (buffer->in_string, new_allocated * sizeof (buffer->in_string[0]));
+      buffer->info = (hb_internal_glyph_info_t *) realloc (buffer->info, new_allocated * sizeof (buffer->info[0]));
       buffer->out_string = (hb_internal_glyph_info_t *) buffer->positions;
     }
     else
     {
-      buffer->in_string = (hb_internal_glyph_info_t *) realloc (buffer->in_string, new_allocated * sizeof (buffer->in_string[0]));
-      buffer->out_string = buffer->in_string;
+      buffer->info = (hb_internal_glyph_info_t *) realloc (buffer->info, new_allocated * sizeof (buffer->info[0]));
+      buffer->out_string = buffer->info;
     }
 
     buffer->allocated = new_allocated;
@@ -226,7 +226,7 @@ hb_buffer_add_glyph (hb_buffer_t    *buffer,
 
   hb_buffer_ensure (buffer, buffer->in_length + 1);
 
-  glyph = &buffer->in_string[buffer->in_length];
+  glyph = &buffer->info[buffer->in_length];
   glyph->codepoint = codepoint;
   glyph->mask = mask;
   glyph->cluster = cluster;
@@ -246,7 +246,7 @@ _hb_buffer_clear_output (hb_buffer_t *buffer)
   buffer->have_output = TRUE;
   buffer->have_positions = FALSE;
   buffer->out_length = 0;
-  buffer->out_string = buffer->in_string;
+  buffer->out_string = buffer->info;
 }
 
 void
@@ -272,11 +272,11 @@ _hb_buffer_swap (hb_buffer_t *buffer)
 
   assert (buffer->have_output);
 
-  if (buffer->out_string != buffer->in_string)
+  if (buffer->out_string != buffer->info)
   {
     hb_internal_glyph_info_t *tmp_string;
-    tmp_string = buffer->in_string;
-    buffer->in_string = buffer->out_string;
+    tmp_string = buffer->info;
+    buffer->info = buffer->out_string;
     buffer->out_string = tmp_string;
     buffer->positions = (hb_internal_glyph_position_t *) buffer->out_string;
   }
@@ -320,18 +320,18 @@ _hb_buffer_add_output_glyphs (hb_buffer_t *buffer,
   unsigned int mask;
   unsigned int cluster;
 
-  if (buffer->out_string != buffer->in_string ||
+  if (buffer->out_string != buffer->info ||
       buffer->out_length + num_out > buffer->in_pos + num_in)
   {
     hb_buffer_ensure_separate (buffer, buffer->out_length + num_out);
   }
 
-  mask = buffer->in_string[buffer->in_pos].mask;
-  cluster = buffer->in_string[buffer->in_pos].cluster;
+  mask = buffer->info[buffer->in_pos].mask;
+  cluster = buffer->info[buffer->in_pos].cluster;
   if (component == 0xFFFF)
-    component = buffer->in_string[buffer->in_pos].component;
+    component = buffer->info[buffer->in_pos].component;
   if (lig_id == 0xFFFF)
-    lig_id = buffer->in_string[buffer->in_pos].lig_id;
+    lig_id = buffer->info[buffer->in_pos].lig_id;
 
   for (i = 0; i < num_out; i++)
   {
@@ -360,18 +360,18 @@ _hb_buffer_add_output_glyphs_be16 (hb_buffer_t *buffer,
   unsigned int mask;
   unsigned int cluster;
 
-  if (buffer->out_string != buffer->in_string ||
+  if (buffer->out_string != buffer->info ||
       buffer->out_length + num_out > buffer->in_pos + num_in)
   {
     hb_buffer_ensure_separate (buffer, buffer->out_length + num_out);
   }
 
-  mask = buffer->in_string[buffer->in_pos].mask;
-  cluster = buffer->in_string[buffer->in_pos].cluster;
+  mask = buffer->info[buffer->in_pos].mask;
+  cluster = buffer->info[buffer->in_pos].cluster;
   if (component == 0xFFFF)
-    component = buffer->in_string[buffer->in_pos].component;
+    component = buffer->info[buffer->in_pos].component;
   if (lig_id == 0xFFFF)
-    lig_id = buffer->in_string[buffer->in_pos].lig_id;
+    lig_id = buffer->info[buffer->in_pos].lig_id;
 
   for (i = 0; i < num_out; i++)
   {
@@ -396,13 +396,13 @@ _hb_buffer_add_output_glyph (hb_buffer_t *buffer,
 {
   hb_internal_glyph_info_t *info;
 
-  if (buffer->out_string != buffer->in_string)
+  if (buffer->out_string != buffer->info)
   {
     hb_buffer_ensure (buffer, buffer->out_length + 1);
-    buffer->out_string[buffer->out_length] = buffer->in_string[buffer->in_pos];
+    buffer->out_string[buffer->out_length] = buffer->info[buffer->in_pos];
   }
   else if (buffer->out_length != buffer->in_pos)
-    buffer->out_string[buffer->out_length] = buffer->in_string[buffer->in_pos];
+    buffer->out_string[buffer->out_length] = buffer->info[buffer->in_pos];
 
   info = &buffer->out_string[buffer->out_length];
   info->codepoint = glyph_index;
@@ -421,13 +421,13 @@ _hb_buffer_next_glyph (hb_buffer_t *buffer)
 {
   if (buffer->have_output)
   {
-    if (buffer->out_string != buffer->in_string)
+    if (buffer->out_string != buffer->info)
     {
       hb_buffer_ensure (buffer, buffer->out_length + 1);
-      buffer->out_string[buffer->out_length] = buffer->in_string[buffer->in_pos];
+      buffer->out_string[buffer->out_length] = buffer->info[buffer->in_pos];
     }
     else if (buffer->out_length != buffer->in_pos)
-      buffer->out_string[buffer->out_length] = buffer->in_string[buffer->in_pos];
+      buffer->out_string[buffer->out_length] = buffer->info[buffer->in_pos];
 
     buffer->out_length++;
   }
@@ -446,7 +446,7 @@ hb_buffer_get_length (hb_buffer_t *buffer)
 hb_glyph_info_t *
 hb_buffer_get_glyph_infos (hb_buffer_t *buffer)
 {
-  return (hb_glyph_info_t *) buffer->in_string;
+  return (hb_glyph_info_t *) buffer->info;
 }
 
 /* Return value valid as long as buffer not modified */
@@ -470,9 +470,9 @@ reverse_range (hb_buffer_t *buffer,
   for (i = start, j = end - 1; i < j; i++, j--) {
     hb_internal_glyph_info_t t;
 
-    t = buffer->in_string[i];
-    buffer->in_string[i] = buffer->in_string[j];
-    buffer->in_string[j] = t;
+    t = buffer->info[i];
+    buffer->info[i] = buffer->info[j];
+    buffer->info[j] = t;
   }
 
   if (buffer->positions) {
@@ -507,12 +507,12 @@ hb_buffer_reverse_clusters (hb_buffer_t *buffer)
 
   count = buffer->in_length;
   start = 0;
-  last_cluster = buffer->in_string[0].cluster;
+  last_cluster = buffer->info[0].cluster;
   for (i = 1; i < count; i++) {
-    if (last_cluster != buffer->in_string[i].cluster) {
+    if (last_cluster != buffer->info[i].cluster) {
       reverse_range (buffer, start, i);
       start = i;
-      last_cluster = buffer->in_string[i].cluster;
+      last_cluster = buffer->info[i].cluster;
     }
   }
   reverse_range (buffer, start, i);
diff --git a/src/hb-ot-layout-gpos-private.hh b/src/hb-ot-layout-gpos-private.hh
index e021b09..249fae2 100644
--- a/src/hb-ot-layout-gpos-private.hh
+++ b/src/hb-ot-layout-gpos-private.hh
@@ -399,8 +399,8 @@ struct MarkArray : ArrayOf<MarkRecord>	/* Array of MarkRecords--in Coverage orde
 
     hb_position_t mark_x, mark_y, base_x, base_y;
 
-    mark_anchor.get_anchor (c->layout, c->buffer->in_string[c->buffer->in_pos].codepoint, &mark_x, &mark_y);
-    glyph_anchor.get_anchor (c->layout, c->buffer->in_string[glyph_pos].codepoint, &base_x, &base_y);
+    mark_anchor.get_anchor (c->layout, c->buffer->info[c->buffer->in_pos].codepoint, &mark_x, &mark_y);
+    glyph_anchor.get_anchor (c->layout, c->buffer->info[glyph_pos].codepoint, &base_x, &base_y);
 
     hb_internal_glyph_position_t &o = c->buffer->positions[c->buffer->in_pos];
     o.x_advance = 0;
@@ -430,7 +430,7 @@ struct SinglePosFormat1
   inline bool apply (hb_apply_context_t *c) const
   {
     TRACE_APPLY ();
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
@@ -469,7 +469,7 @@ struct SinglePosFormat2
   inline bool apply (hb_apply_context_t *c) const
   {
     TRACE_APPLY ();
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
@@ -570,7 +570,7 @@ struct PairSet
     const PairValueRecord *record = CastP<PairValueRecord> (array);
     for (unsigned int i = 0; i < count; i++)
     {
-      if (c->buffer->in_string[pos].codepoint == record->secondGlyph)
+      if (c->buffer->info[pos].codepoint == record->secondGlyph)
       {
 	valueFormats[0].apply_value (c->layout, this, &record->values[0], c->buffer->positions[c->buffer->in_pos]);
 	valueFormats[1].apply_value (c->layout, this, &record->values[len1], c->buffer->positions[pos]);
@@ -623,12 +623,12 @@ struct PairPosFormat1
     if (unlikely (c->buffer->in_pos + 2 > end))
       return false;
 
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
     unsigned int j = c->buffer->in_pos + 1;
-    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[j], c->lookup_flag, NULL))
+    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[j], c->lookup_flag, NULL))
     {
       if (unlikely (j == end))
 	return false;
@@ -685,12 +685,12 @@ struct PairPosFormat2
     if (unlikely (c->buffer->in_pos + 2 > end))
       return false;
 
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
     unsigned int j = c->buffer->in_pos + 1;
-    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[j], c->lookup_flag, NULL))
+    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[j], c->lookup_flag, NULL))
     {
       if (unlikely (j == end))
 	return false;
@@ -701,8 +701,8 @@ struct PairPosFormat2
     unsigned int len2 = valueFormat2.get_len ();
     unsigned int record_len = len1 + len2;
 
-    unsigned int klass1 = (this+classDef1) (c->buffer->in_string[c->buffer->in_pos].codepoint);
-    unsigned int klass2 = (this+classDef2) (c->buffer->in_string[j].codepoint);
+    unsigned int klass1 = (this+classDef1) (c->buffer->info[c->buffer->in_pos].codepoint);
+    unsigned int klass2 = (this+classDef2) (c->buffer->info[j].codepoint);
     if (unlikely (klass1 >= class1Count || klass2 >= class2Count))
       return false;
 
@@ -954,7 +954,7 @@ struct CursivePosFormat1
     if (c->property == HB_OT_LAYOUT_GLYPH_CLASS_MARK)
       return false;
 
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
@@ -964,7 +964,7 @@ struct CursivePosFormat1
       goto end;
 
     hb_position_t entry_x, entry_y;
-    (this+record.entryAnchor).get_anchor (c->layout, c->buffer->in_string[c->buffer->in_pos].codepoint, &entry_x, &entry_y);
+    (this+record.entryAnchor).get_anchor (c->layout, c->buffer->info[c->buffer->in_pos].codepoint, &entry_x, &entry_y);
 
     /* TODO vertical */
 
@@ -994,7 +994,7 @@ struct CursivePosFormat1
     if (record.exitAnchor)
     {
       gpi->last = c->buffer->in_pos;
-      (this+record.exitAnchor).get_anchor (c->layout, c->buffer->in_string[c->buffer->in_pos].codepoint, &gpi->anchor_x, &gpi->anchor_y);
+      (this+record.exitAnchor).get_anchor (c->layout, c->buffer->info[c->buffer->in_pos].codepoint, &gpi->anchor_x, &gpi->anchor_y);
     }
 
     c->buffer->in_pos++;
@@ -1063,7 +1063,7 @@ struct MarkBasePosFormat1
   inline bool apply (hb_apply_context_t *c) const
   {
     TRACE_APPLY ();
-    unsigned int mark_index = (this+markCoverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int mark_index = (this+markCoverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (mark_index == NOT_COVERED))
       return false;
 
@@ -1075,13 +1075,13 @@ struct MarkBasePosFormat1
       if (unlikely (!j))
 	return false;
       j--;
-    } while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[j], LookupFlag::IgnoreMarks, &property));
+    } while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[j], LookupFlag::IgnoreMarks, &property));
 
     /* The following assertion is too strong, so we've disabled it. */
     if (false && !(property & HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH))
       return false;
 
-    unsigned int base_index = (this+baseCoverage) (c->buffer->in_string[j].codepoint);
+    unsigned int base_index = (this+baseCoverage) (c->buffer->info[j].codepoint);
     if (base_index == NOT_COVERED)
       return false;
 
@@ -1165,7 +1165,7 @@ struct MarkLigPosFormat1
   inline bool apply (hb_apply_context_t *c) const
   {
     TRACE_APPLY ();
-    unsigned int mark_index = (this+markCoverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int mark_index = (this+markCoverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (mark_index == NOT_COVERED))
       return false;
 
@@ -1177,13 +1177,13 @@ struct MarkLigPosFormat1
       if (unlikely (!j))
 	return false;
       j--;
-    } while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[j], LookupFlag::IgnoreMarks, &property));
+    } while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[j], LookupFlag::IgnoreMarks, &property));
 
     /* The following assertion is too strong, so we've disabled it. */
     if (false && !(property & HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE))
       return false;
 
-    unsigned int lig_index = (this+ligatureCoverage) (c->buffer->in_string[j].codepoint);
+    unsigned int lig_index = (this+ligatureCoverage) (c->buffer->info[j].codepoint);
     if (lig_index == NOT_COVERED)
       return false;
 
@@ -1199,9 +1199,9 @@ struct MarkLigPosFormat1
      * is identical to the ligature ID of the found ligature.  If yes, we
      * can directly use the component index.  If not, we attach the mark
      * glyph to the last component of the ligature. */
-    if (c->buffer->in_string[j].lig_id && c->buffer->in_string[j].lig_id == c->buffer->in_string[c->buffer->in_pos].lig_id && c->buffer->in_string[c->buffer->in_pos].component)
+    if (c->buffer->info[j].lig_id && c->buffer->info[j].lig_id == c->buffer->info[c->buffer->in_pos].lig_id && c->buffer->info[c->buffer->in_pos].component)
     {
-      comp_index = c->buffer->in_string[c->buffer->in_pos].component - 1;
+      comp_index = c->buffer->info[c->buffer->in_pos].component - 1;
       if (comp_index >= comp_count)
 	comp_index = comp_count - 1;
     }
@@ -1284,7 +1284,7 @@ struct MarkMarkPosFormat1
   inline bool apply (hb_apply_context_t *c) const
   {
     TRACE_APPLY ();
-    unsigned int mark1_index = (this+mark1Coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int mark1_index = (this+mark1Coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (mark1_index == NOT_COVERED))
       return false;
 
@@ -1296,7 +1296,7 @@ struct MarkMarkPosFormat1
       if (unlikely (!j))
 	return false;
       j--;
-    } while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[j], c->lookup_flag, &property));
+    } while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[j], c->lookup_flag, &property));
 
     if (!(property & HB_OT_LAYOUT_GLYPH_CLASS_MARK))
       return false;
@@ -1304,11 +1304,11 @@ struct MarkMarkPosFormat1
     /* Two marks match only if they belong to the same base, or same component
      * of the same ligature.  That is, the component numbers must match, and
      * if those are non-zero, the ligid number should also match. */
-    if ((c->buffer->in_string[j].component != c->buffer->in_string[c->buffer->in_pos].component) ||
-	(c->buffer->in_string[j].component && c->buffer->in_string[j].lig_id != c->buffer->in_string[c->buffer->in_pos].lig_id))
+    if ((c->buffer->info[j].component != c->buffer->info[c->buffer->in_pos].component) ||
+	(c->buffer->info[j].component && c->buffer->info[j].lig_id != c->buffer->info[c->buffer->in_pos].lig_id))
       return false;
 
-    unsigned int mark2_index = (this+mark2Coverage) (c->buffer->in_string[j].codepoint);
+    unsigned int mark2_index = (this+mark2Coverage) (c->buffer->info[j].codepoint);
     if (mark2_index == NOT_COVERED)
       return false;
 
@@ -1513,7 +1513,7 @@ struct PosLookup : Lookup
     c->nesting_level_left = nesting_level_left;
     c->lookup_flag = get_flag ();
 
-    if (!_hb_ot_layout_check_glyph_property (c->layout->face, &c->buffer->in_string[c->buffer->in_pos], c->lookup_flag, &c->property))
+    if (!_hb_ot_layout_check_glyph_property (c->layout->face, &c->buffer->info[c->buffer->in_pos], c->lookup_flag, &c->property))
       return false;
 
     for (unsigned int i = 0; i < get_subtable_count (); i++)
@@ -1538,7 +1538,7 @@ struct PosLookup : Lookup
     while (buffer->in_pos < buffer->in_length)
     {
       bool done;
-      if (~buffer->in_string[buffer->in_pos].mask & mask)
+      if (~buffer->info[buffer->in_pos].mask & mask)
       {
 	  done = apply_once (layout, buffer, NO_CONTEXT, MAX_NESTING_LEVEL);
 	  ret |= done;
diff --git a/src/hb-ot-layout-gsub-private.hh b/src/hb-ot-layout-gsub-private.hh
index 965d199..f5b3593 100644
--- a/src/hb-ot-layout-gsub-private.hh
+++ b/src/hb-ot-layout-gsub-private.hh
@@ -39,7 +39,7 @@ struct SingleSubstFormat1
   inline bool apply (hb_apply_context_t *c) const
   {
     TRACE_APPLY ();
-    hb_codepoint_t glyph_id = c->buffer->in_string[c->buffer->in_pos].codepoint;
+    hb_codepoint_t glyph_id = c->buffer->info[c->buffer->in_pos].codepoint;
     unsigned int index = (this+coverage) (glyph_id);
     if (likely (index == NOT_COVERED))
       return false;
@@ -80,7 +80,7 @@ struct SingleSubstFormat2
   inline bool apply (hb_apply_context_t *c) const
   {
     TRACE_APPLY ();
-    hb_codepoint_t glyph_id = c->buffer->in_string[c->buffer->in_pos].codepoint;
+    hb_codepoint_t glyph_id = c->buffer->info[c->buffer->in_pos].codepoint;
     unsigned int index = (this+coverage) (glyph_id);
     if (likely (index == NOT_COVERED))
       return false;
@@ -204,7 +204,7 @@ struct MultipleSubstFormat1
   {
     TRACE_APPLY ();
 
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
@@ -273,7 +273,7 @@ struct AlternateSubstFormat1
   inline bool apply (hb_apply_context_t *c) const
   {
     TRACE_APPLY ();
-    hb_codepoint_t glyph_id = c->buffer->in_string[c->buffer->in_pos].codepoint;
+    hb_codepoint_t glyph_id = c->buffer->info[c->buffer->in_pos].codepoint;
 
     unsigned int index = (this+coverage) (glyph_id);
     if (likely (index == NOT_COVERED))
@@ -374,7 +374,7 @@ struct Ligature
     for (i = 1, j = c->buffer->in_pos + 1; i < count; i++, j++)
     {
       unsigned int property;
-      while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[j], c->lookup_flag, &property))
+      while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[j], c->lookup_flag, &property))
       {
 	if (unlikely (j + count - i == end))
 	  return false;
@@ -384,7 +384,7 @@ struct Ligature
       if (!(property & HB_OT_LAYOUT_GLYPH_CLASS_MARK))
 	is_mark = false;
 
-      if (likely (c->buffer->in_string[j].codepoint != component[i]))
+      if (likely (c->buffer->info[j].codepoint != component[i]))
         return false;
     }
     /* This is just a guess ... */
@@ -399,7 +399,7 @@ struct Ligature
       c->buffer->add_output_glyphs_be16 (i,
 					       1, (const uint16_t *) &ligGlyph,
 					       0,
-					       c->buffer->in_string[c->buffer->in_pos].lig_id && !c->buffer->in_string[c->buffer->in_pos].component ?
+					       c->buffer->info[c->buffer->in_pos].lig_id && !c->buffer->info[c->buffer->in_pos].component ?
 					       0xFFFF : c->buffer->allocate_lig_id ());
     else
     {
@@ -415,8 +415,8 @@ struct Ligature
 
       for ( i = 1; i < count; i++ )
       {
-	while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[c->buffer->in_pos], c->lookup_flag, NULL))
-	  c->buffer->add_output_glyph (c->buffer->in_string[c->buffer->in_pos].codepoint, i, lig_id);
+	while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[c->buffer->in_pos], c->lookup_flag, NULL))
+	  c->buffer->add_output_glyph (c->buffer->info[c->buffer->in_pos].codepoint, i, lig_id);
 
 	(c->buffer->in_pos)++;
       }
@@ -483,7 +483,7 @@ struct LigatureSubstFormat1
   inline bool apply (hb_apply_context_t *c) const
   {
     TRACE_APPLY ();
-    hb_codepoint_t glyph_id = c->buffer->in_string[c->buffer->in_pos].codepoint;
+    hb_codepoint_t glyph_id = c->buffer->info[c->buffer->in_pos].codepoint;
 
     bool first_is_mark = !!(c->property & HB_OT_LAYOUT_GLYPH_CLASS_MARK);
 
@@ -604,7 +604,7 @@ struct ReverseChainSingleSubstFormat1
     if (unlikely (c->context_length != NO_CONTEXT))
       return false; /* No chaining to this type */
 
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
@@ -619,7 +619,7 @@ struct ReverseChainSingleSubstFormat1
 			 match_coverage, this,
 			 1))
     {
-      c->buffer->in_string[c->buffer->in_pos].codepoint = substitute[index];
+      c->buffer->info[c->buffer->in_pos].codepoint = substitute[index];
       c->buffer->in_pos--; /* Reverse! */
       return true;
     }
@@ -789,7 +789,7 @@ struct SubstLookup : Lookup
     c->nesting_level_left = nesting_level_left;
     c->lookup_flag = get_flag ();
 
-    if (!_hb_ot_layout_check_glyph_property (c->layout->face, &c->buffer->in_string[c->buffer->in_pos], c->lookup_flag, &c->property))
+    if (!_hb_ot_layout_check_glyph_property (c->layout->face, &c->buffer->info[c->buffer->in_pos], c->lookup_flag, &c->property))
       return false;
 
     if (unlikely (lookup_type == SubstLookupSubTable::Extension))
@@ -830,7 +830,7 @@ struct SubstLookup : Lookup
 	buffer->in_pos = 0;
 	while (buffer->in_pos < buffer->in_length)
 	{
-	  if ((~buffer->in_string[buffer->in_pos].mask & mask) &&
+	  if ((~buffer->info[buffer->in_pos].mask & mask) &&
 	      apply_once (layout, buffer, NO_CONTEXT, MAX_NESTING_LEVEL))
 	    ret = true;
 	  else
@@ -846,7 +846,7 @@ struct SubstLookup : Lookup
 	buffer->in_pos = buffer->in_length - 1;
 	do
 	{
-	  if ((~buffer->in_string[buffer->in_pos].mask & mask) &&
+	  if ((~buffer->info[buffer->in_pos].mask & mask) &&
 	      apply_once (layout, buffer, NO_CONTEXT, MAX_NESTING_LEVEL))
 	    ret = true;
 	  else
diff --git a/src/hb-ot-layout-gsubgpos-private.hh b/src/hb-ot-layout-gsubgpos-private.hh
index 5c22797..a74557f 100644
--- a/src/hb-ot-layout-gsubgpos-private.hh
+++ b/src/hb-ot-layout-gsubgpos-private.hh
@@ -94,14 +94,14 @@ static inline bool match_input (hb_apply_context_t *c,
 
   for (i = 1, j = c->buffer->in_pos + 1; i < count; i++, j++)
   {
-    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[j], c->lookup_flag, NULL))
+    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[j], c->lookup_flag, NULL))
     {
       if (unlikely (j + count - i == end))
 	return false;
       j++;
     }
 
-    if (likely (!match_func (c->buffer->in_string[j].codepoint, input[i - 1], match_data)))
+    if (likely (!match_func (c->buffer->info[j].codepoint, input[i - 1], match_data)))
       return false;
   }
 
@@ -149,14 +149,14 @@ static inline bool match_lookahead (hb_apply_context_t *c,
 
   for (i = 0, j = c->buffer->in_pos + offset; i < count; i++, j++)
   {
-    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[j], c->lookup_flag, NULL))
+    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[j], c->lookup_flag, NULL))
     {
       if (unlikely (j + count - i == end))
 	return false;
       j++;
     }
 
-    if (likely (!match_func (c->buffer->in_string[j].codepoint, lookahead[i], match_data)))
+    if (likely (!match_func (c->buffer->info[j].codepoint, lookahead[i], match_data)))
       return false;
   }
 
@@ -198,7 +198,7 @@ static inline bool apply_lookup (hb_apply_context_t *c,
    */
   for (unsigned int i = 0; i < count; /* NOP */)
   {
-    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->in_string[c->buffer->in_pos], c->lookup_flag, NULL))
+    while (_hb_ot_layout_skip_mark (c->layout->face, &c->buffer->info[c->buffer->in_pos], c->lookup_flag, NULL))
     {
       if (unlikely (c->buffer->in_pos == end))
 	return true;
@@ -337,7 +337,7 @@ struct ContextFormat1
   inline bool apply (hb_apply_context_t *c, apply_lookup_func_t apply_func) const
   {
     TRACE_APPLY ();
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
@@ -376,12 +376,12 @@ struct ContextFormat2
   inline bool apply (hb_apply_context_t *c, apply_lookup_func_t apply_func) const
   {
     TRACE_APPLY ();
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
     const ClassDef &class_def = this+classDef;
-    index = class_def (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    index = class_def (c->buffer->info[c->buffer->in_pos].codepoint);
     const RuleSet &rule_set = this+ruleSet[index];
     /* LONGTERMTODO: Old code fetches glyph classes at most once and caches
      * them across subrule lookups.  Not sure it's worth it.
@@ -424,7 +424,7 @@ struct ContextFormat3
   inline bool apply (hb_apply_context_t *c, apply_lookup_func_t apply_func) const
   {
     TRACE_APPLY ();
-    unsigned int index = (this+coverage[0]) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage[0]) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
@@ -628,7 +628,7 @@ struct ChainContextFormat1
   inline bool apply (hb_apply_context_t *c, apply_lookup_func_t apply_func) const
   {
     TRACE_APPLY ();
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
@@ -666,7 +666,7 @@ struct ChainContextFormat2
   inline bool apply (hb_apply_context_t *c, apply_lookup_func_t apply_func) const
   {
     TRACE_APPLY ();
-    unsigned int index = (this+coverage) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+coverage) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
@@ -674,7 +674,7 @@ struct ChainContextFormat2
     const ClassDef &input_class_def = this+inputClassDef;
     const ClassDef &lookahead_class_def = this+lookaheadClassDef;
 
-    index = input_class_def (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    index = input_class_def (c->buffer->info[c->buffer->in_pos].codepoint);
     const ChainRuleSet &rule_set = this+ruleSet[index];
     /* LONGTERMTODO: Old code fetches glyph classes at most once and caches
      * them across subrule lookups.  Not sure it's worth it.
@@ -732,7 +732,7 @@ struct ChainContextFormat3
     TRACE_APPLY ();
     const OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack);
 
-    unsigned int index = (this+input[0]) (c->buffer->in_string[c->buffer->in_pos].codepoint);
+    unsigned int index = (this+input[0]) (c->buffer->info[c->buffer->in_pos].codepoint);
     if (likely (index == NOT_COVERED))
       return false;
 
diff --git a/src/hb-shape.cc b/src/hb-shape.cc
index de3780c..a0f166f 100644
--- a/src/hb-shape.cc
+++ b/src/hb-shape.cc
@@ -50,8 +50,8 @@ hb_form_clusters (hb_buffer_t *buffer)
 
   count = buffer->in_length;
   for (buffer->in_pos = 1; buffer->in_pos < count; buffer->in_pos++)
-    if (buffer->unicode->get_general_category (buffer->in_string[buffer->in_pos].codepoint) == HB_CATEGORY_NON_SPACING_MARK)
-      buffer->in_string[buffer->in_pos].cluster = buffer->in_string[buffer->in_pos - 1].cluster;
+    if (buffer->unicode->get_general_category (buffer->info[buffer->in_pos].codepoint) == HB_CATEGORY_NON_SPACING_MARK)
+      buffer->info[buffer->in_pos].cluster = buffer->info[buffer->in_pos - 1].cluster;
 }
 
 static hb_direction_t
@@ -84,7 +84,7 @@ hb_mirror_chars (hb_buffer_t *buffer)
 
   count = buffer->in_length;
   for (buffer->in_pos = 0; buffer->in_pos < count; buffer->in_pos++) {
-      buffer->in_string[buffer->in_pos].codepoint = get_mirroring (buffer->in_string[buffer->in_pos].codepoint);
+      buffer->info[buffer->in_pos].codepoint = get_mirroring (buffer->info[buffer->in_pos].codepoint);
   }
 }
 
@@ -99,14 +99,14 @@ hb_map_glyphs (hb_font_t    *font,
     return;
   count = buffer->in_length - 1;
   for (buffer->in_pos = 0; buffer->in_pos < count; buffer->in_pos++) {
-    if (unlikely (is_variation_selector (buffer->in_string[buffer->in_pos + 1].codepoint))) {
-      buffer->in_string[buffer->in_pos].codepoint = hb_font_get_glyph (font, face, buffer->in_string[buffer->in_pos].codepoint, buffer->in_string[buffer->in_pos + 1].codepoint);
+    if (unlikely (is_variation_selector (buffer->info[buffer->in_pos + 1].codepoint))) {
+      buffer->info[buffer->in_pos].codepoint = hb_font_get_glyph (font, face, buffer->info[buffer->in_pos].codepoint, buffer->info[buffer->in_pos + 1].codepoint);
       buffer->in_pos++;
     } else {
-      buffer->in_string[buffer->in_pos].codepoint = hb_font_get_glyph (font, face, buffer->in_string[buffer->in_pos].codepoint, 0);
+      buffer->info[buffer->in_pos].codepoint = hb_font_get_glyph (font, face, buffer->info[buffer->in_pos].codepoint, 0);
     }
   }
-  buffer->in_string[buffer->in_pos].codepoint = hb_font_get_glyph (font, face, buffer->in_string[buffer->in_pos].codepoint, 0);
+  buffer->info[buffer->in_pos].codepoint = hb_font_get_glyph (font, face, buffer->info[buffer->in_pos].codepoint, 0);
 }
 
 static void
@@ -157,7 +157,7 @@ hb_position_default (hb_font_t    *font,
   count = buffer->in_length;
   for (buffer->in_pos = 0; buffer->in_pos < count; buffer->in_pos++) {
     hb_glyph_metrics_t metrics;
-    hb_font_get_glyph_metrics (font, face, buffer->in_string[buffer->in_pos].codepoint, &metrics);
+    hb_font_get_glyph_metrics (font, face, buffer->info[buffer->in_pos].codepoint, &metrics);
     buffer->positions[buffer->in_pos].x_advance = metrics.x_advance;
     buffer->positions[buffer->in_pos].y_advance = metrics.y_advance;
   }
@@ -196,7 +196,7 @@ hb_truetype_kern (hb_font_t    *font,
   count = buffer->in_length;
   for (buffer->in_pos = 1; buffer->in_pos < count; buffer->in_pos++) {
     hb_position_t kern, kern1, kern2;
-    kern = hb_font_get_kerning (font, face, buffer->in_string[buffer->in_pos - 1].codepoint, buffer->in_string[buffer->in_pos].codepoint);
+    kern = hb_font_get_kerning (font, face, buffer->info[buffer->in_pos - 1].codepoint, buffer->info[buffer->in_pos].codepoint);
     kern1 = kern >> 1;
     kern2 = kern - kern1;
     buffer->positions[buffer->in_pos - 1].x_advance += kern1;