src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-shape-complex-indic-private.hh
changeset 47216 71c04702a3d5
parent 40435 553eb1a50733
child 48274 51772bf1fb0c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-shape-complex-indic-private.hh	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,189 @@
+/*
+ * Copyright © 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.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_OT_SHAPE_COMPLEX_INDIC_PRIVATE_HH
+#define HB_OT_SHAPE_COMPLEX_INDIC_PRIVATE_HH
+
+#include "hb-private.hh"
+
+
+#include "hb-ot-shape-complex-private.hh"
+#include "hb-ot-shape-private.hh" /* XXX Remove */
+
+
+#define INDIC_TABLE_ELEMENT_TYPE uint16_t
+
+/* Cateories used in the OpenType spec:
+ * https://www.microsoft.com/typography/otfntdev/devanot/shaping.aspx
+ */
+/* Note: This enum is duplicated in the -machine.rl source file.
+ * Not sure how to avoid duplication. */
+enum indic_category_t {
+  OT_X = 0,
+  OT_C = 1,
+  OT_V = 2,
+  OT_N = 3,
+  OT_H = 4,
+  OT_ZWNJ = 5,
+  OT_ZWJ = 6,
+  OT_M = 7,
+  OT_SM = 8,
+  OT_VD = 9,
+  OT_A = 10,
+  OT_PLACEHOLDER = 11,
+  OT_DOTTEDCIRCLE = 12,
+  OT_RS = 13, /* Register Shifter, used in Khmer OT spec. */
+  OT_Coeng = 14, /* Khmer-style Virama. */
+  OT_Repha = 15, /* Atomically-encoded logical or visual repha. */
+  OT_Ra = 16,
+  OT_CM = 17,  /* Consonant-Medial. */
+  OT_Symbol = 18 /* Avagraha, etc that take marks (SM,A,VD). */
+};
+
+#define MEDIAL_FLAGS (FLAG (OT_CM))
+
+/* Note:
+ *
+ * We treat Vowels and placeholders as if they were consonants.  This is safe because Vowels
+ * cannot happen in a consonant syllable.  The plus side however is, we can call the
+ * consonant syllable logic from the vowel syllable function and get it all right! */
+#define CONSONANT_FLAGS (FLAG (OT_C) | FLAG (OT_Ra) | MEDIAL_FLAGS | FLAG (OT_V) | FLAG (OT_PLACEHOLDER) | FLAG (OT_DOTTEDCIRCLE))
+#define JOINER_FLAGS (FLAG (OT_ZWJ) | FLAG (OT_ZWNJ))
+#define HALANT_OR_COENG_FLAGS (FLAG (OT_H) | FLAG (OT_Coeng))
+
+
+/* Visual positions in a syllable from left to right. */
+enum indic_position_t {
+  POS_START,
+
+  POS_RA_TO_BECOME_REPH,
+  POS_PRE_M,
+  POS_PRE_C,
+
+  POS_BASE_C,
+  POS_AFTER_MAIN,
+
+  POS_ABOVE_C,
+
+  POS_BEFORE_SUB,
+  POS_BELOW_C,
+  POS_AFTER_SUB,
+
+  POS_BEFORE_POST,
+  POS_POST_C,
+  POS_AFTER_POST,
+
+  POS_FINAL_C,
+  POS_SMVD,
+
+  POS_END
+};
+
+/* Categories used in IndicSyllabicCategory.txt from UCD. */
+enum indic_syllabic_category_t {
+  INDIC_SYLLABIC_CATEGORY_OTHER                         = OT_X,
+
+  INDIC_SYLLABIC_CATEGORY_AVAGRAHA                      = OT_Symbol,
+  INDIC_SYLLABIC_CATEGORY_BINDU                         = OT_SM,
+  INDIC_SYLLABIC_CATEGORY_BRAHMI_JOINING_NUMBER         = OT_PLACEHOLDER, /* Don't care. */
+  INDIC_SYLLABIC_CATEGORY_CANTILLATION_MARK             = OT_A,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT                     = OT_C,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_DEAD                = OT_C,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_FINAL               = OT_CM,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_HEAD_LETTER         = OT_C,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_KILLER              = OT_M, /* U+17CD only. */
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_MEDIAL              = OT_CM,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_PLACEHOLDER         = OT_PLACEHOLDER,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_PRECEDING_REPHA     = OT_Repha,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_PREFIXED            = OT_X, /* Don't care. */
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_SUBJOINED           = OT_CM,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_SUCCEEDING_REPHA    = OT_N,
+  INDIC_SYLLABIC_CATEGORY_CONSONANT_WITH_STACKER        = OT_Repha, /* TODO */
+  INDIC_SYLLABIC_CATEGORY_GEMINATION_MARK               = OT_SM,
+  INDIC_SYLLABIC_CATEGORY_INVISIBLE_STACKER             = OT_Coeng,
+  INDIC_SYLLABIC_CATEGORY_JOINER                        = OT_ZWJ,
+  INDIC_SYLLABIC_CATEGORY_MODIFYING_LETTER              = OT_X,
+  INDIC_SYLLABIC_CATEGORY_NON_JOINER                    = OT_ZWNJ,
+  INDIC_SYLLABIC_CATEGORY_NUKTA                         = OT_N,
+  INDIC_SYLLABIC_CATEGORY_NUMBER                        = OT_PLACEHOLDER,
+  INDIC_SYLLABIC_CATEGORY_NUMBER_JOINER                 = OT_PLACEHOLDER, /* Don't care. */
+  INDIC_SYLLABIC_CATEGORY_PURE_KILLER                   = OT_M, /* Is like a vowel matra. */
+  INDIC_SYLLABIC_CATEGORY_REGISTER_SHIFTER              = OT_RS,
+  INDIC_SYLLABIC_CATEGORY_SYLLABLE_MODIFIER             = OT_M, /* Misc Khmer signs. */
+  INDIC_SYLLABIC_CATEGORY_TONE_LETTER                   = OT_X,
+  INDIC_SYLLABIC_CATEGORY_TONE_MARK                     = OT_N,
+  INDIC_SYLLABIC_CATEGORY_VIRAMA                        = OT_H,
+  INDIC_SYLLABIC_CATEGORY_VISARGA                       = OT_SM,
+  INDIC_SYLLABIC_CATEGORY_VOWEL                         = OT_V,
+  INDIC_SYLLABIC_CATEGORY_VOWEL_DEPENDENT               = OT_M,
+  INDIC_SYLLABIC_CATEGORY_VOWEL_INDEPENDENT             = OT_V
+};
+
+/* Categories used in IndicSMatraCategory.txt from UCD */
+enum indic_matra_category_t {
+  INDIC_MATRA_CATEGORY_NOT_APPLICABLE                   = POS_END,
+
+  INDIC_MATRA_CATEGORY_LEFT                             = POS_PRE_C,
+  INDIC_MATRA_CATEGORY_TOP                              = POS_ABOVE_C,
+  INDIC_MATRA_CATEGORY_BOTTOM                           = POS_BELOW_C,
+  INDIC_MATRA_CATEGORY_RIGHT                            = POS_POST_C,
+
+  /* These should resolve to the position of the last part of the split sequence. */
+  INDIC_MATRA_CATEGORY_BOTTOM_AND_RIGHT                 = INDIC_MATRA_CATEGORY_RIGHT,
+  INDIC_MATRA_CATEGORY_LEFT_AND_RIGHT                   = INDIC_MATRA_CATEGORY_RIGHT,
+  INDIC_MATRA_CATEGORY_TOP_AND_BOTTOM                   = INDIC_MATRA_CATEGORY_BOTTOM,
+  INDIC_MATRA_CATEGORY_TOP_AND_BOTTOM_AND_RIGHT         = INDIC_MATRA_CATEGORY_RIGHT,
+  INDIC_MATRA_CATEGORY_TOP_AND_LEFT                     = INDIC_MATRA_CATEGORY_TOP,
+  INDIC_MATRA_CATEGORY_TOP_AND_LEFT_AND_RIGHT           = INDIC_MATRA_CATEGORY_RIGHT,
+  INDIC_MATRA_CATEGORY_TOP_AND_RIGHT                    = INDIC_MATRA_CATEGORY_RIGHT,
+
+  INDIC_MATRA_CATEGORY_OVERSTRUCK                       = POS_AFTER_MAIN,
+  INDIC_MATRA_CATEGORY_VISUAL_ORDER_LEFT                = POS_PRE_M
+};
+
+#define INDIC_COMBINE_CATEGORIES(S,M) \
+  ( \
+    ASSERT_STATIC_EXPR_ZERO (S < 255 && M < 255) + \
+    ( S | \
+     ( \
+      ( \
+       S == INDIC_SYLLABIC_CATEGORY_CONSONANT_MEDIAL || \
+       S == INDIC_SYLLABIC_CATEGORY_GEMINATION_MARK || \
+       S == INDIC_SYLLABIC_CATEGORY_REGISTER_SHIFTER || \
+       S == INDIC_SYLLABIC_CATEGORY_CONSONANT_SUCCEEDING_REPHA || \
+       S == INDIC_SYLLABIC_CATEGORY_VIRAMA || \
+       S == INDIC_SYLLABIC_CATEGORY_VOWEL_DEPENDENT || \
+       false \
+       ? M : INDIC_MATRA_CATEGORY_NOT_APPLICABLE \
+      ) << 8 \
+     ) \
+    ) \
+   )
+
+HB_INTERNAL INDIC_TABLE_ELEMENT_TYPE
+hb_indic_get_categories (hb_codepoint_t u);
+
+#endif /* HB_OT_SHAPE_COMPLEX_INDIC_PRIVATE_HH */