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-rw-r--r--src/3rdparty/harfbuzz-ng/src/graph/test-classdef-graph.cc296
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diff --git a/src/3rdparty/harfbuzz-ng/src/graph/test-classdef-graph.cc b/src/3rdparty/harfbuzz-ng/src/graph/test-classdef-graph.cc
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+/*
+ * Copyright © 2022 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): Garret Rieger
+ */
+
+#include "gsubgpos-context.hh"
+#include "classdef-graph.hh"
+#include "hb-iter.hh"
+#include "hb-serialize.hh"
+
+typedef hb_codepoint_pair_t gid_and_class_t;
+typedef hb_vector_t<gid_and_class_t> gid_and_class_list_t;
+
+template<typename It>
+static unsigned actual_class_def_size(It glyph_and_class) {
+ char buffer[100];
+ hb_serialize_context_t serializer(buffer, 100);
+ OT::ClassDef_serialize (&serializer, glyph_and_class);
+ serializer.end_serialize ();
+ assert(!serializer.in_error());
+
+ hb_blob_t* blob = serializer.copy_blob();
+ unsigned size = hb_blob_get_length(blob);
+ hb_blob_destroy(blob);
+ return size;
+}
+
+static unsigned actual_class_def_size(gid_and_class_list_t consecutive_map, hb_vector_t<unsigned> classes) {
+ auto filtered_it =
+ + consecutive_map.as_sorted_array().iter()
+ | hb_filter([&] (unsigned c) {
+ for (unsigned klass : classes) {
+ if (c == klass) {
+ return true;
+ }
+ }
+ return false;
+ }, hb_second);
+ return actual_class_def_size(+ filtered_it);
+}
+
+template<typename It>
+static unsigned actual_coverage_size(It glyphs) {
+ char buffer[100];
+ hb_serialize_context_t serializer(buffer, 100);
+ OT::Layout::Common::Coverage_serialize (&serializer, glyphs);
+ serializer.end_serialize ();
+ assert(!serializer.in_error());
+
+ hb_blob_t* blob = serializer.copy_blob();
+ unsigned size = hb_blob_get_length(blob);
+ hb_blob_destroy(blob);
+ return size;
+}
+
+static unsigned actual_coverage_size(gid_and_class_list_t consecutive_map, hb_vector_t<unsigned> classes) {
+ auto filtered_it =
+ + consecutive_map.as_sorted_array().iter()
+ | hb_filter([&] (unsigned c) {
+ for (unsigned klass : classes) {
+ if (c == klass) {
+ return true;
+ }
+ }
+ return false;
+ }, hb_second);
+ return actual_coverage_size(+ filtered_it | hb_map_retains_sorting(hb_first));
+}
+
+static bool check_coverage_size(graph::class_def_size_estimator_t& estimator,
+ const gid_and_class_list_t& map,
+ hb_vector_t<unsigned> klasses)
+{
+ unsigned result = estimator.coverage_size();
+ unsigned expected = actual_coverage_size(map, klasses);
+ if (result != expected) {
+ printf ("FAIL: estimated coverage expected size %u but was %u\n", expected, result);
+ return false;
+ }
+ return true;
+}
+
+static bool check_add_class_def_size(graph::class_def_size_estimator_t& estimator,
+ const gid_and_class_list_t& map,
+ unsigned klass, hb_vector_t<unsigned> klasses)
+{
+ unsigned result = estimator.add_class_def_size(klass);
+ unsigned expected = actual_class_def_size(map, klasses);
+ if (result != expected) {
+ printf ("FAIL: estimated class def expected size %u but was %u\n", expected, result);
+ return false;
+ }
+
+ return check_coverage_size(estimator, map, klasses);
+}
+
+static bool check_add_class_def_size (const gid_and_class_list_t& list, unsigned klass)
+{
+ graph::class_def_size_estimator_t estimator (list.iter ());
+
+ unsigned result = estimator.add_class_def_size (klass);
+ auto filtered_it =
+ + list.as_sorted_array().iter()
+ | hb_filter([&] (unsigned c) {
+ return c == klass;
+ }, hb_second);
+
+ unsigned expected = actual_class_def_size(filtered_it);
+ if (result != expected)
+ {
+ printf ("FAIL: class def expected size %u but was %u\n", expected, result);
+ return false;
+ }
+
+ auto cov_it = + filtered_it | hb_map_retains_sorting(hb_first);
+ result = estimator.coverage_size ();
+ expected = actual_coverage_size(cov_it);
+ if (result != expected)
+ {
+ printf ("FAIL: coverage expected size %u but was %u\n", expected, result);
+ return false;
+ }
+
+ return true;
+}
+
+static void test_class_and_coverage_size_estimates ()
+{
+ gid_and_class_list_t empty = {
+ };
+ assert (check_add_class_def_size (empty, 0));
+ assert (check_add_class_def_size (empty, 1));
+
+ gid_and_class_list_t class_zero = {
+ {5, 0},
+ };
+ assert (check_add_class_def_size (class_zero, 0));
+
+ gid_and_class_list_t consecutive = {
+ {4, 0},
+ {5, 0},
+
+ {6, 1},
+ {7, 1},
+
+ {8, 2},
+ {9, 2},
+ {10, 2},
+ {11, 2},
+ };
+ assert (check_add_class_def_size (consecutive, 0));
+ assert (check_add_class_def_size (consecutive, 1));
+ assert (check_add_class_def_size (consecutive, 2));
+
+ gid_and_class_list_t non_consecutive = {
+ {4, 0},
+ {6, 0},
+
+ {8, 1},
+ {10, 1},
+
+ {9, 2},
+ {10, 2},
+ {11, 2},
+ {13, 2},
+ };
+ assert (check_add_class_def_size (non_consecutive, 0));
+ assert (check_add_class_def_size (non_consecutive, 1));
+ assert (check_add_class_def_size (non_consecutive, 2));
+
+ gid_and_class_list_t multiple_ranges = {
+ {4, 0},
+ {5, 0},
+
+ {6, 1},
+ {7, 1},
+
+ {9, 1},
+
+ {11, 1},
+ {12, 1},
+ {13, 1},
+ };
+ assert (check_add_class_def_size (multiple_ranges, 0));
+ assert (check_add_class_def_size (multiple_ranges, 1));
+}
+
+static void test_running_class_and_coverage_size_estimates () {
+ // #### With consecutive gids: switches formats ###
+ gid_and_class_list_t consecutive_map = {
+ // range 1-4 (f1: 8 bytes), (f2: 6 bytes)
+ {1, 1},
+ {2, 1},
+ {3, 1},
+ {4, 1},
+
+ // (f1: 2 bytes), (f2: 6 bytes)
+ {5, 2},
+
+ // (f1: 14 bytes), (f2: 6 bytes)
+ {6, 3},
+ {7, 3},
+ {8, 3},
+ {9, 3},
+ {10, 3},
+ {11, 3},
+ {12, 3},
+ };
+
+ graph::class_def_size_estimator_t estimator1(consecutive_map.iter());
+ assert(check_add_class_def_size(estimator1, consecutive_map, 1, {1}));
+ assert(check_add_class_def_size(estimator1, consecutive_map, 2, {1, 2}));
+ assert(check_add_class_def_size(estimator1, consecutive_map, 2, {1, 2})); // check that adding the same class again works
+ assert(check_add_class_def_size(estimator1, consecutive_map, 3, {1, 2, 3}));
+
+ estimator1.reset();
+ assert(check_add_class_def_size(estimator1, consecutive_map, 2, {2}));
+ assert(check_add_class_def_size(estimator1, consecutive_map, 3, {2, 3}));
+
+ // #### With non-consecutive gids: always uses format 2 ###
+ gid_and_class_list_t non_consecutive_map = {
+ // range 1-4 (f1: 8 bytes), (f2: 6 bytes)
+ {1, 1},
+ {2, 1},
+ {3, 1},
+ {4, 1},
+
+ // (f1: 2 bytes), (f2: 12 bytes)
+ {6, 2},
+ {8, 2},
+
+ // (f1: 14 bytes), (f2: 6 bytes)
+ {9, 3},
+ {10, 3},
+ {11, 3},
+ {12, 3},
+ {13, 3},
+ {14, 3},
+ {15, 3},
+ };
+
+ graph::class_def_size_estimator_t estimator2(non_consecutive_map.iter());
+ assert(check_add_class_def_size(estimator2, non_consecutive_map, 1, {1}));
+ assert(check_add_class_def_size(estimator2, non_consecutive_map, 2, {1, 2}));
+ assert(check_add_class_def_size(estimator2, non_consecutive_map, 3, {1, 2, 3}));
+
+ estimator2.reset();
+ assert(check_add_class_def_size(estimator2, non_consecutive_map, 2, {2}));
+ assert(check_add_class_def_size(estimator2, non_consecutive_map, 3, {2, 3}));
+}
+
+static void test_running_class_size_estimates_with_locally_consecutive_glyphs () {
+ gid_and_class_list_t map = {
+ {1, 1},
+ {6, 2},
+ {7, 3},
+ };
+
+ graph::class_def_size_estimator_t estimator(map.iter());
+ assert(check_add_class_def_size(estimator, map, 1, {1}));
+ assert(check_add_class_def_size(estimator, map, 2, {1, 2}));
+ assert(check_add_class_def_size(estimator, map, 3, {1, 2, 3}));
+
+ estimator.reset();
+ assert(check_add_class_def_size(estimator, map, 2, {2}));
+ assert(check_add_class_def_size(estimator, map, 3, {2, 3}));
+}
+
+int
+main (int argc, char **argv)
+{
+ test_class_and_coverage_size_estimates ();
+ test_running_class_and_coverage_size_estimates ();
+ test_running_class_size_estimates_with_locally_consecutive_glyphs ();
+}
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