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[web] Better format for line break tests (flutter/engine#20767)

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This commit is contained in:
Mouad Debbar 2020-08-28 14:43:01 -07:00 committed by GitHub
parent c852497059
commit fd88de8492
4 changed files with 7859 additions and 7856 deletions
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8
engine/src/flutter/lib/web_ui/test/text/line_breaker_test.dart
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@ -9,7 +9,8 @@ import 'package:test/test.dart';
import 'package:ui/src/engine.dart';
import 'package:ui/ui.dart';
import 'line_breaker_test_data.dart';
import 'line_breaker_test_helper.dart';
import 'line_breaker_test_raw_data.dart';
void main() {
internalBootstrapBrowserTest(() => testMain);
@ -224,8 +225,9 @@ void testMain() {
});
test('comprehensive test', () {
for (int t = 0; t < data.length; t++) {
final TestCase testCase = data[t];
final List<TestCase> testCollection = parseRawTestData(rawLineBreakTestData);
for (int t = 0; t < testCollection.length; t++) {
final TestCase testCase = testCollection[t];
final String text = testCase.toText();
int lastLineBreak = 0;

7853
engine/src/flutter/lib/web_ui/test/text/line_breaker_test_data.dart
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File diff suppressed because it is too large Load Diff

192
engine/src/flutter/lib/web_ui/test/text/line_breaker_test_helper.dart Normal file
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@ -0,0 +1,192 @@
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// @dart = 2.10
// The following test cases contradict rule LB25, so we are replacing them
// with correct expectations.
const Map<String, String> _replacements = <String, String>{
'× 007D ÷ 0025 ÷ # × [0.3] RIGHT CURLY BRACKET (CL) ÷ [999.0] PERCENT SIGN (PO) ÷ [0.3]':
'× 007D × 0025 ÷ # × [0.3] RIGHT CURLY BRACKET (CL) × [999.0] PERCENT SIGN (PO) ÷ [0.3]',
'× 007D × 0308 ÷ 0025 ÷ # × [0.3] RIGHT CURLY BRACKET (CL) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] PERCENT SIGN (PO) ÷ [0.3]':
'× 007D × 0308 × 0025 ÷ # × [0.3] RIGHT CURLY BRACKET (CL) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] PERCENT SIGN (PO) ÷ [0.3]',
'× 007D ÷ 0024 ÷ # × [0.3] RIGHT CURLY BRACKET (CL) ÷ [999.0] DOLLAR SIGN (PR) ÷ [0.3]':
'× 007D × 0024 ÷ # × [0.3] RIGHT CURLY BRACKET (CL) × [999.0] DOLLAR SIGN (PR) ÷ [0.3]',
'× 007D × 0308 ÷ 0024 ÷ # × [0.3] RIGHT CURLY BRACKET (CL) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] DOLLAR SIGN (PR) ÷ [0.3]':
'× 007D × 0308 × 0024 ÷ # × [0.3] RIGHT CURLY BRACKET (CL) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] DOLLAR SIGN (PR) ÷ [0.3]',
'× 002C ÷ 0030 ÷ # × [0.3] COMMA (IS) ÷ [999.0] DIGIT ZERO (NU) ÷ [0.3]':
'× 002C × 0030 ÷ # × [0.3] COMMA (IS) × [999.0] DIGIT ZERO (NU) ÷ [0.3]',
'× 002C × 0308 ÷ 0030 ÷ # × [0.3] COMMA (IS) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] DIGIT ZERO (NU) ÷ [0.3]':
'× 002C × 0308 × 0030 ÷ # × [0.3] COMMA (IS) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] DIGIT ZERO (NU) ÷ [0.3]',
'× 0025 ÷ 2329 ÷ # × [0.3] PERCENT SIGN (PO) ÷ [999.0] LEFT-POINTING ANGLE BRACKET (OP) ÷ [0.3]':
'× 0025 × 2329 ÷ # × [0.3] PERCENT SIGN (PO) × [999.0] LEFT-POINTING ANGLE BRACKET (OP) ÷ [0.3]',
'× 0025 × 0308 ÷ 2329 ÷ # × [0.3] PERCENT SIGN (PO) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] LEFT-POINTING ANGLE BRACKET (OP) ÷ [0.3]':
'× 0025 × 0308 × 2329 ÷ # × [0.3] PERCENT SIGN (PO) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] LEFT-POINTING ANGLE BRACKET (OP) ÷ [0.3]',
'× 0025 ÷ 0028 ÷ # × [0.3] PERCENT SIGN (PO) ÷ [999.0] LEFT PARENTHESIS (OP_OP30) ÷ [0.3]':
'× 0025 × 0028 ÷ # × [0.3] PERCENT SIGN (PO) × [999.0] LEFT PARENTHESIS (OP_OP30) ÷ [0.3]',
'× 0025 × 0308 ÷ 0028 ÷ # × [0.3] PERCENT SIGN (PO) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] LEFT PARENTHESIS (OP_OP30) ÷ [0.3]':
'× 0025 × 0308 × 0028 ÷ # × [0.3] PERCENT SIGN (PO) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] LEFT PARENTHESIS (OP_OP30) ÷ [0.3]',
'× 0024 ÷ 2329 ÷ # × [0.3] DOLLAR SIGN (PR) ÷ [999.0] LEFT-POINTING ANGLE BRACKET (OP) ÷ [0.3]':
'× 0024 × 2329 ÷ # × [0.3] DOLLAR SIGN (PR) × [999.0] LEFT-POINTING ANGLE BRACKET (OP) ÷ [0.3]',
'× 0024 × 0308 ÷ 2329 ÷ # × [0.3] DOLLAR SIGN (PR) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] LEFT-POINTING ANGLE BRACKET (OP) ÷ [0.3]':
'× 0024 × 0308 × 2329 ÷ # × [0.3] DOLLAR SIGN (PR) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] LEFT-POINTING ANGLE BRACKET (OP) ÷ [0.3]',
'× 0024 ÷ 0028 ÷ # × [0.3] DOLLAR SIGN (PR) ÷ [999.0] LEFT PARENTHESIS (OP_OP30) ÷ [0.3]':
'× 0024 × 0028 ÷ # × [0.3] DOLLAR SIGN (PR) × [999.0] LEFT PARENTHESIS (OP_OP30) ÷ [0.3]',
'× 0024 × 0308 ÷ 0028 ÷ # × [0.3] DOLLAR SIGN (PR) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] LEFT PARENTHESIS (OP_OP30) ÷ [0.3]':
'× 0024 × 0308 × 0028 ÷ # × [0.3] DOLLAR SIGN (PR) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] LEFT PARENTHESIS (OP_OP30) ÷ [0.3]',
'× 002F ÷ 0030 ÷ # × [0.3] SOLIDUS (SY) ÷ [999.0] DIGIT ZERO (NU) ÷ [0.3]':
'× 002F × 0030 ÷ # × [0.3] SOLIDUS (SY) × [999.0] DIGIT ZERO (NU) ÷ [0.3]',
'× 002F × 0308 ÷ 0030 ÷ # × [0.3] SOLIDUS (SY) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] DIGIT ZERO (NU) ÷ [0.3]':
'× 002F × 0308 × 0030 ÷ # × [0.3] SOLIDUS (SY) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] DIGIT ZERO (NU) ÷ [0.3]',
'× 0029 ÷ 0025 ÷ # × [0.3] RIGHT PARENTHESIS (CP_CP30) ÷ [999.0] PERCENT SIGN (PO) ÷ [0.3]':
'× 0029 × 0025 ÷ # × [0.3] RIGHT PARENTHESIS (CP_CP30) × [999.0] PERCENT SIGN (PO) ÷ [0.3]',
'× 0029 × 0308 ÷ 0025 ÷ # × [0.3] RIGHT PARENTHESIS (CP_CP30) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] PERCENT SIGN (PO) ÷ [0.3]':
'× 0029 × 0308 × 0025 ÷ # × [0.3] RIGHT PARENTHESIS (CP_CP30) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] PERCENT SIGN (PO) ÷ [0.3]',
'× 0029 ÷ 0024 ÷ # × [0.3] RIGHT PARENTHESIS (CP_CP30) ÷ [999.0] DOLLAR SIGN (PR) ÷ [0.3]':
'× 0029 × 0024 ÷ # × [0.3] RIGHT PARENTHESIS (CP_CP30) × [999.0] DOLLAR SIGN (PR) ÷ [0.3]',
'× 0029 × 0308 ÷ 0024 ÷ # × [0.3] RIGHT PARENTHESIS (CP_CP30) × [9.0] COMBINING DIAERESIS (CM1_CM) ÷ [999.0] DOLLAR SIGN (PR) ÷ [0.3]':
'× 0029 × 0308 × 0024 ÷ # × [0.3] RIGHT PARENTHESIS (CP_CP30) × [9.0] COMBINING DIAERESIS (CM1_CM) × [999.0] DOLLAR SIGN (PR) ÷ [0.3]',
'× 0065 × 0071 × 0075 × 0061 × 006C × 0073 × 0020 × 002E ÷ 0033 × 0035 × 0020 ÷ 0063 × 0065 × 006E × 0074 × 0073 ÷ # × [0.3] LATIN SMALL LETTER E (AL) × [28.0] LATIN SMALL LETTER Q (AL) × [28.0] LATIN SMALL LETTER U (AL) × [28.0] LATIN SMALL LETTER A (AL) × [28.0] LATIN SMALL LETTER L (AL) × [28.0] LATIN SMALL LETTER S (AL) × [7.01] SPACE (SP) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT THREE (NU) × [25.03] DIGIT FIVE (NU) × [7.01] SPACE (SP) ÷ [18.0] LATIN SMALL LETTER C (AL) × [28.0] LATIN SMALL LETTER E (AL) × [28.0] LATIN SMALL LETTER N (AL) × [28.0] LATIN SMALL LETTER T (AL) × [28.0] LATIN SMALL LETTER S (AL) ÷ [0.3]':
'× 0065 × 0071 × 0075 × 0061 × 006C × 0073 × 0020 × 002E × 0033 × 0035 × 0020 ÷ 0063 × 0065 × 006E × 0074 × 0073 ÷ # × [0.3] LATIN SMALL LETTER E (AL) × [28.0] LATIN SMALL LETTER Q (AL) × [28.0] LATIN SMALL LETTER U (AL) × [28.0] LATIN SMALL LETTER A (AL) × [28.0] LATIN SMALL LETTER L (AL) × [28.0] LATIN SMALL LETTER S (AL) × [7.01] SPACE (SP) × [13.02] FULL STOP (IS) × [999.0] DIGIT THREE (NU) × [25.03] DIGIT FIVE (NU) × [7.01] SPACE (SP) ÷ [18.0] LATIN SMALL LETTER C (AL) × [28.0] LATIN SMALL LETTER E (AL) × [28.0] LATIN SMALL LETTER N (AL) × [28.0] LATIN SMALL LETTER T (AL) × [28.0] LATIN SMALL LETTER S (AL) ÷ [0.3]',
'× 0063 × 006F × 0064 × 0065 × 005C ÷ 0028 × 0073 × 005C × 0029 ÷ # × [0.3] LATIN SMALL LETTER C (AL) × [28.0] LATIN SMALL LETTER O (AL) × [28.0] LATIN SMALL LETTER D (AL) × [28.0] LATIN SMALL LETTER E (AL) × [24.03] REVERSE SOLIDUS (PR) ÷ [999.0] LEFT PARENTHESIS (OP_OP30) × [14.0] LATIN SMALL LETTER S (AL) × [24.03] REVERSE SOLIDUS (PR) × [13.02] RIGHT PARENTHESIS (CP_CP30) ÷ [0.3]':
'× 0063 × 006F × 0064 × 0065 × 005C × 0028 × 0073 × 005C × 0029 ÷ # × [0.3] LATIN SMALL LETTER C (AL) × [28.0] LATIN SMALL LETTER O (AL) × [28.0] LATIN SMALL LETTER D (AL) × [28.0] LATIN SMALL LETTER E (AL) × [24.03] REVERSE SOLIDUS (PR) × [999.0] LEFT PARENTHESIS (OP_OP30) × [14.0] LATIN SMALL LETTER S (AL) × [24.03] REVERSE SOLIDUS (PR) × [13.02] RIGHT PARENTHESIS (CP_CP30) ÷ [0.3]',
'× 0063 × 006F × 0064 × 0065 × 005C ÷ 007B × 0073 × 005C × 007D ÷ # × [0.3] LATIN SMALL LETTER C (AL) × [28.0] LATIN SMALL LETTER O (AL) × [28.0] LATIN SMALL LETTER D (AL) × [28.0] LATIN SMALL LETTER E (AL) × [24.03] REVERSE SOLIDUS (PR) ÷ [999.0] LEFT CURLY BRACKET (OP_OP30) × [14.0] LATIN SMALL LETTER S (AL) × [24.03] REVERSE SOLIDUS (PR) × [13.02] RIGHT CURLY BRACKET (CL) ÷ [0.3]':
'× 0063 × 006F × 0064 × 0065 × 005C × 007B × 0073 × 005C × 007D ÷ # × [0.3] LATIN SMALL LETTER C (AL) × [28.0] LATIN SMALL LETTER O (AL) × [28.0] LATIN SMALL LETTER D (AL) × [28.0] LATIN SMALL LETTER E (AL) × [24.03] REVERSE SOLIDUS (PR) × [999.0] LEFT CURLY BRACKET (OP_OP30) × [14.0] LATIN SMALL LETTER S (AL) × [24.03] REVERSE SOLIDUS (PR) × [13.02] RIGHT CURLY BRACKET (CL) ÷ [0.3]',
'× 0061 × 002E ÷ 0032 × 0020 ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT TWO (NU) × [7.01] SPACE (SP) ÷ [0.3]':
'× 0061 × 002E × 0032 × 0020 ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT TWO (NU) × [7.01] SPACE (SP) ÷ [0.3]',
'× 0061 × 002E ÷ 0032 × 0020 ÷ 0915 ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT TWO (NU) × [7.01] SPACE (SP) ÷ [18.0] DEVANAGARI LETTER KA (AL) ÷ [0.3]':
'× 0061 × 002E × 0032 × 0020 ÷ 0915 ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT TWO (NU) × [7.01] SPACE (SP) ÷ [18.0] DEVANAGARI LETTER KA (AL) ÷ [0.3]',
'× 0061 × 002E ÷ 0032 × 0020 ÷ 672C ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT TWO (NU) × [7.01] SPACE (SP) ÷ [18.0] CJK UNIFIED IDEOGRAPH-672C (ID) ÷ [0.3]':
'× 0061 × 002E × 0032 × 0020 ÷ 672C ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT TWO (NU) × [7.01] SPACE (SP) ÷ [18.0] CJK UNIFIED IDEOGRAPH-672C (ID) ÷ [0.3]',
'× 0061 × 002E ÷ 0032 × 3000 ÷ 672C ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT TWO (NU) × [21.01] IDEOGRAPHIC SPACE (BA) ÷ [999.0] CJK UNIFIED IDEOGRAPH-672C (ID) ÷ [0.3]':
'× 0061 × 002E × 0032 × 3000 ÷ 672C ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT TWO (NU) × [21.01] IDEOGRAPHIC SPACE (BA) ÷ [999.0] CJK UNIFIED IDEOGRAPH-672C (ID) ÷ [0.3]',
'× 0061 × 002E ÷ 0032 × 3000 ÷ 307E ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT TWO (NU) × [21.01] IDEOGRAPHIC SPACE (BA) ÷ [999.0] HIRAGANA LETTER MA (ID) ÷ [0.3]':
'× 0061 × 002E × 0032 × 3000 ÷ 307E ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT TWO (NU) × [21.01] IDEOGRAPHIC SPACE (BA) ÷ [999.0] HIRAGANA LETTER MA (ID) ÷ [0.3]',
'× 0061 × 002E ÷ 0032 × 3000 ÷ 0033 ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT TWO (NU) × [21.01] IDEOGRAPHIC SPACE (BA) ÷ [999.0] DIGIT THREE (NU) ÷ [0.3]':
'× 0061 × 002E × 0032 × 3000 ÷ 0033 ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT TWO (NU) × [21.01] IDEOGRAPHIC SPACE (BA) ÷ [999.0] DIGIT THREE (NU) ÷ [0.3]',
'× 0041 × 002E ÷ 0031 × 0020 ÷ BABB ÷ # × [0.3] LATIN CAPITAL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT ONE (NU) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE MOS (H3) ÷ [0.3]':
'× 0041 × 002E × 0031 × 0020 ÷ BABB ÷ # × [0.3] LATIN CAPITAL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT ONE (NU) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE MOS (H3) ÷ [0.3]',
'× BD24 ÷ C5B4 × 002E × 0020 ÷ 0041 × 002E ÷ 0032 × 0020 ÷ BCFC ÷ # × [0.3] HANGUL SYLLABLE BWASS (H3) ÷ [999.0] HANGUL SYLLABLE EO (H2) × [13.02] FULL STOP (IS) × [7.01] SPACE (SP) ÷ [18.0] LATIN CAPITAL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT TWO (NU) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE BOL (H3) ÷ [0.3]':
'× BD24 ÷ C5B4 × 002E × 0020 ÷ 0041 × 002E × 0032 × 0020 ÷ BCFC ÷ # × [0.3] HANGUL SYLLABLE BWASS (H3) ÷ [999.0] HANGUL SYLLABLE EO (H2) × [13.02] FULL STOP (IS) × [7.01] SPACE (SP) ÷ [18.0] LATIN CAPITAL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT TWO (NU) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE BOL (H3) ÷ [0.3]',
'× BD10 ÷ C694 × 002E × 0020 ÷ 0041 × 002E ÷ 0033 × 0020 ÷ BABB ÷ # × [0.3] HANGUL SYLLABLE BWA (H2) ÷ [999.0] HANGUL SYLLABLE YO (H2) × [13.02] FULL STOP (IS) × [7.01] SPACE (SP) ÷ [18.0] LATIN CAPITAL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT THREE (NU) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE MOS (H3) ÷ [0.3]':
'× BD10 ÷ C694 × 002E × 0020 ÷ 0041 × 002E × 0033 × 0020 ÷ BABB ÷ # × [0.3] HANGUL SYLLABLE BWA (H2) ÷ [999.0] HANGUL SYLLABLE YO (H2) × [13.02] FULL STOP (IS) × [7.01] SPACE (SP) ÷ [18.0] LATIN CAPITAL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT THREE (NU) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE MOS (H3) ÷ [0.3]',
'× C694 × 002E × 0020 ÷ 0041 × 002E ÷ 0034 × 0020 ÷ BABB ÷ # × [0.3] HANGUL SYLLABLE YO (H2) × [13.02] FULL STOP (IS) × [7.01] SPACE (SP) ÷ [18.0] LATIN CAPITAL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT FOUR (NU) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE MOS (H3) ÷ [0.3]':
'× C694 × 002E × 0020 ÷ 0041 × 002E × 0034 × 0020 ÷ BABB ÷ # × [0.3] HANGUL SYLLABLE YO (H2) × [13.02] FULL STOP (IS) × [7.01] SPACE (SP) ÷ [18.0] LATIN CAPITAL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT FOUR (NU) × [7.01] SPACE (SP) ÷ [18.0] HANGUL SYLLABLE MOS (H3) ÷ [0.3]',
'× 0061 × 002E ÷ 0032 × 3000 ÷ 300C ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) ÷ [999.0] DIGIT TWO (NU) × [21.01] IDEOGRAPHIC SPACE (BA) ÷ [999.0] LEFT CORNER BRACKET (OP) ÷ [0.3]':
'× 0061 × 002E × 0032 × 3000 ÷ 300C ÷ # × [0.3] LATIN SMALL LETTER A (AL) × [13.02] FULL STOP (IS) × [999.0] DIGIT TWO (NU) × [21.01] IDEOGRAPHIC SPACE (BA) ÷ [999.0] LEFT CORNER BRACKET (OP) ÷ [0.3]',
};
/// Parses raw test data into a list of [TestCase] objects.
List<TestCase> parseRawTestData(String rawTestData) {
return rawTestData
.split('\n')
.where(isValidTestCase)
.map(_checkReplacement)
.map(_parse)
.toList();
}
bool isValidTestCase(String line) {
return line.startsWith('×');
}
String _checkReplacement(String line) {
final String? replacement = _replacements[line];
return replacement ?? line;
}
final RegExp spaceRegex = RegExp(r'\s+');
final RegExp signRegex = RegExp(r'([×÷])\s+\[(\d+\.\d+)\]\s*');
final RegExp charRegex = RegExp(
r'([A-Z0-9-]+(?:\s+[A-Z0-9-]+)*)\s+\(([A-Z0-9_]+)\)\s*',
caseSensitive: false,
);
final RegExp charWithBracketsRegex = RegExp(
r'(\<[A-Z0-9()-]+(?:\s+[A-Z0-9()-]+)*\>)\s+\(([A-Z0-9_]+)\)\s*',
caseSensitive: false,
);
TestCase _parse(String line) {
final int hashIndex = line.indexOf('#');
final List<String> sequence =
line.substring(0, hashIndex).trim().split(spaceRegex);
final String explanation = line.substring(hashIndex + 1).trim();
final List<Sign> signs = <Sign>[];
final Match signMatch = signRegex.matchAsPrefix(explanation)!;
signs.add(Sign._(code: signMatch.group(1)!, rule: signMatch.group(2)!));
final List<Char> chars = <Char>[];
int i = signMatch.group(0)!.length;
while (i < explanation.length) {
final Match charMatch = explanation[i] == '<'
? charWithBracketsRegex.matchAsPrefix(explanation, i)!
: charRegex.matchAsPrefix(explanation, i)!;
final int charCode = int.parse(sequence[2 * chars.length + 1], radix: 16);
chars.add(Char._(
code: charCode,
name: charMatch.group(1)!,
property: charMatch.group(2)!,
));
i += charMatch.group(0)!.length;
final Match signMatch = signRegex.matchAsPrefix(explanation, i)!;
signs.add(Sign._(code: signMatch.group(1)!, rule: signMatch.group(2)!));
i += signMatch.group(0)!.length;
}
return TestCase._(signs: signs, chars: chars, raw: line);
}
/// Represents a character in a test case.
///
/// The character has a code, name and a property that determines how it behaves
/// with regards to line breaks.
class Char {
Char._({required this.code, required this.name, required this.property});
final int code;
final String name;
final String property;
/// Whether this character is a code point that gets encoded as a UTF-16
/// surrogate pair.
bool get isSurrogatePair => code > 0xFFFF;
}
/// Represents a sign between two characters in a test case.
///
/// The sign could either be "×" to indicate no line break, or "÷" to indicate
/// the existence of a line break opportunity.
class Sign {
Sign._({required this.code, required this.rule});
final String code;
final String rule;
bool get isBreakOpportunity => code == '÷';
}
/// Represents an entire test case.
///
/// A test case is a sequence of characters combined with signs between them.
/// The signs indicate where line break opportunities exist.
class TestCase {
TestCase._({required this.signs, required this.chars, required this.raw});
final List<Sign> signs;
final List<Char> chars;
final String raw;
Iterable<int> get charCodes => chars.map((Char char) => char.code);
/// Returns the text that this test case is covering.
String toText() {
return String.fromCharCodes(charCodes);
}
String toString() {
return raw;
}
}

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engine/src/flutter/lib/web_ui/test/text/line_breaker_test_raw_data.dart Normal file
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