[buffer-deserialize-text] Separate glyphs / unicodes machines

src/Makefile.sources

@@ -256,7 +256,8 @@ HB_BASE_sources = \
 
 HB_BASE_RAGEL_GENERATED_sources = \
 	hb-buffer-deserialize-json.hh \
-	hb-buffer-deserialize-text.hh \
+	hb-buffer-deserialize-text-glyphs.hh \
+	hb-buffer-deserialize-text-unicodes.hh \
 	hb-number-parser.hh \
 	hb-ot-shaper-indic-machine.hh \
 	hb-ot-shaper-khmer-machine.hh \
@@ -265,7 +266,8 @@ HB_BASE_RAGEL_GENERATED_sources = \
 	$(NULL)
 HB_BASE_RAGEL_sources = \
 	hb-buffer-deserialize-json.rl \
-	hb-buffer-deserialize-text.rl \
+	hb-buffer-deserialize-text-glyphs.rl \
+	hb-buffer-deserialize-text-unicodes.rl \
 	hb-number-parser.rl \
 	hb-ot-shaper-indic-machine.rl \
 	hb-ot-shaper-khmer-machine.rl \

src/hb-buffer-deserialize-text-glyphs.rl

@@ -24,14 +24,14 @@
  * Google Author(s): Behdad Esfahbod
  */
 
-#ifndef HB_BUFFER_DESERIALIZE_TEXT_HH
-#define HB_BUFFER_DESERIALIZE_TEXT_HH
+#ifndef HB_BUFFER_DESERIALIZE_TEXT_GLYPHS_HH
+#define HB_BUFFER_DESERIALIZE_TEXT_GLYPHS_HH
 
 #include "hb.hh"
 
 %%{
 
-machine deserialize_text;
+machine deserialize_text_glyphs;
 alphtype unsigned char;
 write data;
 
@@ -52,9 +52,6 @@ action tok {
 	tok = p;
 }
 
-action ensure_glyphs { if (unlikely (!buffer->ensure_glyphs ())) return false; }
-action ensure_unicode { if (unlikely (!buffer->ensure_unicode ())) return false; }
-
 action parse_glyph {
 	/* TODO Unescape delimiters. */
 	if (!hb_font_glyph_from_string (font,
@@ -63,8 +60,6 @@ action parse_glyph {
 	  return false;
 }
 
-action parse_hexdigits  {if (!parse_hex (tok, p, &info.codepoint )) return false; }
-
 action parse_cluster	{ if (!parse_uint (tok, p, &info.cluster )) return false; }
 action parse_x_offset	{ if (!parse_int  (tok, p, &pos.x_offset )) return false; }
 action parse_y_offset	{ if (!parse_int  (tok, p, &pos.y_offset )) return false; }
@@ -93,31 +88,17 @@ glyph_item	=
 		glyphflags?
 	)
 	>clear_item
-	@ensure_glyphs
-	%add_item
-	;
-
-unicode = 'U' '+' xdigit+ >tok %parse_hexdigits;
-
-unicode_item	=
-	(
-		unicode
-		cluster?
-	)
-	>clear_item
-	@ensure_unicode
 	%add_item
 	;
 
 glyphs = glyph_item (space* '|' space* glyph_item)* space* ('|'|']');
-unicodes = unicode_item (space* '|' space* unicode_item)* space* ('|'|'>');
 
-main := space* ( ('[' glyphs) | ('<' unicodes) );
+main := space* '[' glyphs;
 
 }%%
 
 static hb_bool_t
-_hb_buffer_deserialize_text (hb_buffer_t *buffer,
+_hb_buffer_deserialize_text_glyphs (hb_buffer_t *buffer,
 				    const char *buf,
 				    unsigned int buf_len,
 				    const char **end_ptr,
@@ -145,4 +126,4 @@ _hb_buffer_deserialize_text (hb_buffer_t *buffer,
   return p == pe && *(p-1) != ']';
 }
 
-#endif /* HB_BUFFER_DESERIALIZE_TEXT_HH */
+#endif /* HB_BUFFER_DESERIALIZE_TEXT_GLYPHS_HH */

src/hb-buffer-deserialize-text-unicodes.rl

@@ -0,0 +1,108 @@
+/*
+ * Copyright © 2013  Google, Inc.
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_BUFFER_DESERIALIZE_TEXT_UNICODES_HH
+#define HB_BUFFER_DESERIALIZE_TEXT_UNICODES_HH
+
+#include "hb.hh"
+
+%%{
+
+machine deserialize_text_unicodes;
+alphtype unsigned char;
+write data;
+
+action clear_item {
+	hb_memset (&info, 0, sizeof (info));
+	hb_memset (&pos , 0, sizeof (pos ));
+}
+
+action add_item {
+	buffer->add_info (info);
+	if (unlikely (!buffer->successful))
+	  return false;
+	if (buffer->have_positions)
+	  buffer->pos[buffer->len - 1] = pos;
+	*end_ptr = p;
+}
+
+action tok {
+	tok = p;
+}
+
+action parse_hexdigits  {if (!parse_hex (tok, p, &info.codepoint )) return false; }
+
+action parse_cluster	{ if (!parse_uint (tok, p, &info.cluster )) return false; }
+
+unum  = '0' | [1-9] digit*;
+num	= '-'? unum;
+
+cluster	= '=' (unum >tok %parse_cluster);
+
+unicode = 'U' '+' xdigit+ >tok %parse_hexdigits;
+
+unicode_item	=
+	(
+		unicode
+		cluster?
+	)
+	>clear_item
+	%add_item
+	;
+
+unicodes = unicode_item (space* '|' space* unicode_item)* space* ('|'|'>');
+
+main := space* '<' unicodes;
+
+}%%
+
+static hb_bool_t
+_hb_buffer_deserialize_text_unicodes (hb_buffer_t *buffer,
+				      const char *buf,
+				      unsigned int buf_len,
+				      const char **end_ptr,
+				      hb_font_t *font)
+{
+  const char *p = buf, *pe = buf + buf_len;
+
+  while (p < pe && ISSPACE (*p))
+    p++;
+
+  const char *tok = nullptr;
+  int cs;
+  hb_glyph_info_t info = {0};
+  hb_glyph_position_t pos = {0};
+  %%{
+    write init;
+    write exec;
+  }%%
+
+  *end_ptr = p;
+
+  return p == pe && *(p-1) != ']';
+}
+
+#endif /* HB_BUFFER_DESERIALIZE_TEXT_UNICODES_HH */

src/hb-buffer-serialize.cc

@@ -721,7 +721,8 @@ parse_hex (const char *pp, const char *end, uint32_t *pv)
 }
 
 #include "hb-buffer-deserialize-json.hh"
-#include "hb-buffer-deserialize-text.hh"
+#include "hb-buffer-deserialize-text-glyphs.hh"
+#include "hb-buffer-deserialize-text-unicodes.hh"
 
 /**
  * hb_buffer_deserialize_glyphs:
@@ -779,7 +780,7 @@ hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
   switch (format)
   {
     case HB_BUFFER_SERIALIZE_FORMAT_TEXT:
-      return _hb_buffer_deserialize_text (buffer,
+      return _hb_buffer_deserialize_text_glyphs (buffer,
 						 buf, buf_len, end_ptr,
 						 font);
 
@@ -849,7 +850,7 @@ hb_buffer_deserialize_unicode (hb_buffer_t *buffer,
   switch (format)
   {
     case HB_BUFFER_SERIALIZE_FORMAT_TEXT:
-      return _hb_buffer_deserialize_text (buffer,
+      return _hb_buffer_deserialize_text_unicodes (buffer,
 						   buf, buf_len, end_ptr,
 						   font);
 

src/meson.build

@@ -256,7 +256,8 @@ hb_base_sources = files(
 
 hb_base_ragel_generated_sources = files(
   'hb-buffer-deserialize-json.hh',
-  'hb-buffer-deserialize-text.hh',
+  'hb-buffer-deserialize-text-glyphs.hh',
+  'hb-buffer-deserialize-text-unicodes.hh',
   'hb-number-parser.hh',
   'hb-ot-shaper-indic-machine.hh',
   'hb-ot-shaper-khmer-machine.hh',
@@ -265,7 +266,8 @@ hb_base_ragel_generated_sources = files(
 )
 hb_base_ragel_sources = [
   'hb-buffer-deserialize-json.rl',
-  'hb-buffer-deserialize-text.rl',
+  'hb-buffer-deserialize-text-glyphs.rl',
+  'hb-buffer-deserialize-text-unicodes.rl',
   'hb-number-parser.rl',
   'hb-ot-shaper-indic-machine.rl',
   'hb-ot-shaper-khmer-machine.rl',