--- /dev/null 2015-11-17 15:39:47.000000000 -0800 +++ new/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-buffer-private.hh 2015-11-17 15:39:46.000000000 -0800 @@ -0,0 +1,249 @@ +/* + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +// This file is available under and governed by the GNU General Public +// License version 2 only, as published by the Free Software Foundation. +// However, the following notice accompanied the original version of this +// file: +// +/* + * Copyright © 1998-2004 David Turner and Werner Lemberg + * Copyright © 2004,2007,2009,2010 Red Hat, Inc. + * Copyright © 2011,2012 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. + * + * Red Hat Author(s): Owen Taylor, Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BUFFER_PRIVATE_HH +#define HB_BUFFER_PRIVATE_HH + +#include "hb-private.hh" +#include "hb-object-private.hh" +#include "hb-unicode-private.hh" + + +ASSERT_STATIC (sizeof (hb_glyph_info_t) == 20); +ASSERT_STATIC (sizeof (hb_glyph_info_t) == sizeof (hb_glyph_position_t)); + + +/* + * hb_buffer_t + */ + +struct hb_buffer_t { + hb_object_header_t header; + ASSERT_POD (); + + /* Information about how the text in the buffer should be treated */ + hb_unicode_funcs_t *unicode; /* Unicode functions */ + hb_buffer_flags_t flags; /* BOT / EOT / etc. */ + hb_buffer_cluster_level_t cluster_level; + hb_codepoint_t replacement; /* U+FFFD or something else. */ + + /* Buffer contents */ + hb_buffer_content_type_t content_type; + hb_segment_properties_t props; /* Script, language, direction */ + + bool in_error; /* Allocation failed */ + bool have_output; /* Whether we have an output buffer going on */ + bool have_positions; /* Whether we have positions */ + + unsigned int idx; /* Cursor into ->info and ->pos arrays */ + unsigned int len; /* Length of ->info and ->pos arrays */ + unsigned int out_len; /* Length of ->out array if have_output */ + + unsigned int allocated; /* Length of allocated arrays */ + hb_glyph_info_t *info; + hb_glyph_info_t *out_info; + hb_glyph_position_t *pos; + + inline hb_glyph_info_t &cur (unsigned int i = 0) { return info[idx + i]; } + inline hb_glyph_info_t cur (unsigned int i = 0) const { return info[idx + i]; } + + inline hb_glyph_position_t &cur_pos (unsigned int i = 0) { return pos[idx + i]; } + inline hb_glyph_position_t cur_pos (unsigned int i = 0) const { return pos[idx + i]; } + + inline hb_glyph_info_t &prev (void) { return out_info[out_len - 1]; } + inline hb_glyph_info_t prev (void) const { return info[out_len - 1]; } + + inline bool has_separate_output (void) const { return info != out_info; } + + unsigned int serial; + + /* These reflect current allocations of the bytes in glyph_info_t's var1 and var2. */ + uint8_t allocated_var_bytes[8]; + const char *allocated_var_owner[8]; + + /* Text before / after the main buffer contents. + * Always in Unicode, and ordered outward. + * Index 0 is for "pre-context", 1 for "post-context". */ + static const unsigned int CONTEXT_LENGTH = 5; + hb_codepoint_t context[2][CONTEXT_LENGTH]; + unsigned int context_len[2]; + + + /* Methods */ + + HB_INTERNAL void reset (void); + HB_INTERNAL void clear (void); + + inline unsigned int backtrack_len (void) const + { return have_output? out_len : idx; } + inline unsigned int lookahead_len (void) const + { return len - idx; } + inline unsigned int next_serial (void) { return serial++; } + + HB_INTERNAL void allocate_var (unsigned int byte_i, unsigned int count, const char *owner); + HB_INTERNAL void deallocate_var (unsigned int byte_i, unsigned int count, const char *owner); + HB_INTERNAL void assert_var (unsigned int byte_i, unsigned int count, const char *owner); + HB_INTERNAL void deallocate_var_all (void); + + HB_INTERNAL void add (hb_codepoint_t codepoint, + unsigned int cluster); + HB_INTERNAL void add_info (const hb_glyph_info_t &glyph_info); + + HB_INTERNAL void reverse_range (unsigned int start, unsigned int end); + HB_INTERNAL void reverse (void); + HB_INTERNAL void reverse_clusters (void); + HB_INTERNAL void guess_segment_properties (void); + + HB_INTERNAL void swap_buffers (void); + HB_INTERNAL void remove_output (void); + HB_INTERNAL void clear_output (void); + HB_INTERNAL void clear_positions (void); + + HB_INTERNAL void replace_glyphs (unsigned int num_in, + unsigned int num_out, + const hb_codepoint_t *glyph_data); + + HB_INTERNAL void replace_glyph (hb_codepoint_t glyph_index); + /* Makes a copy of the glyph at idx to output and replace glyph_index */ + HB_INTERNAL void output_glyph (hb_codepoint_t glyph_index); + HB_INTERNAL void output_info (const hb_glyph_info_t &glyph_info); + /* Copies glyph at idx to output but doesn't advance idx */ + HB_INTERNAL void copy_glyph (void); + HB_INTERNAL bool move_to (unsigned int i); /* i is output-buffer index. */ + /* Copies glyph at idx to output and advance idx. + * If there's no output, just advance idx. */ + inline void + next_glyph (void) + { + if (have_output) + { + if (unlikely (out_info != info || out_len != idx)) { + if (unlikely (!make_room_for (1, 1))) return; + out_info[out_len] = info[idx]; + } + out_len++; + } + + idx++; + } + + /* Advance idx without copying to output. */ + inline void skip_glyph (void) { idx++; } + + inline void reset_masks (hb_mask_t mask) + { + for (unsigned int j = 0; j < len; j++) + info[j].mask = mask; + } + inline void add_masks (hb_mask_t mask) + { + for (unsigned int j = 0; j < len; j++) + info[j].mask |= mask; + } + HB_INTERNAL void set_masks (hb_mask_t value, + hb_mask_t mask, + unsigned int cluster_start, + unsigned int cluster_end); + + HB_INTERNAL void merge_clusters (unsigned int start, + unsigned int end) + { + if (end - start < 2) + return; + merge_clusters_impl (start, end); + } + HB_INTERNAL void merge_clusters_impl (unsigned int start, + unsigned int end); + HB_INTERNAL void merge_out_clusters (unsigned int start, + unsigned int end); + /* Merge clusters for deleting current glyph, and skip it. */ + HB_INTERNAL void delete_glyph (void); + + /* Internal methods */ + HB_INTERNAL bool enlarge (unsigned int size); + + inline bool ensure (unsigned int size) + { return likely (!size || size < allocated) ? true : enlarge (size); } + + inline bool ensure_inplace (unsigned int size) + { return likely (!size || size < allocated); } + + HB_INTERNAL bool make_room_for (unsigned int num_in, unsigned int num_out); + HB_INTERNAL bool shift_forward (unsigned int count); + + typedef long scratch_buffer_t; + HB_INTERNAL scratch_buffer_t *get_scratch_buffer (unsigned int *size); + + inline void clear_context (unsigned int side) { context_len[side] = 0; } + + HB_INTERNAL void sort (unsigned int start, unsigned int end, int(*compar)(const hb_glyph_info_t *, const hb_glyph_info_t *)); +}; + + +#define HB_BUFFER_XALLOCATE_VAR(b, func, var, owner) \ + b->func (offsetof (hb_glyph_info_t, var) - offsetof(hb_glyph_info_t, var1), \ + sizeof (b->info[0].var), owner) +#define HB_BUFFER_ALLOCATE_VAR(b, var) \ + HB_BUFFER_XALLOCATE_VAR (b, allocate_var, var (), #var) +#define HB_BUFFER_DEALLOCATE_VAR(b, var) \ + HB_BUFFER_XALLOCATE_VAR (b, deallocate_var, var (), #var) +#define HB_BUFFER_ASSERT_VAR(b, var) \ + HB_BUFFER_XALLOCATE_VAR (b, assert_var, var (), #var) + + +#endif /* HB_BUFFER_PRIVATE_HH */