blob: d8f4be1589ded5e75ff7bad748c092495458e982 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_PARSER_FONT_VARIANT_EAST_ASIAN_PARSER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_PARSER_FONT_VARIANT_EAST_ASIAN_PARSER_H_
#include "third_party/blink/renderer/core/css/css_value_list.h"
#include "third_party/blink/renderer/core/css/parser/css_parser_token_range.h"
#include "third_party/blink/renderer/core/css/parser/css_property_parser_helpers.h"
namespace blink {
class FontVariantEastAsianParser {
STACK_ALLOCATED();
public:
FontVariantEastAsianParser()
: east_asian_form_value_(nullptr),
east_asian_width_value_(nullptr),
ruby_value_(nullptr) {}
enum class ParseResult { kConsumedValue, kDisallowedValue, kUnknownValue };
ParseResult ConsumeEastAsian(CSSParserTokenRange& range) {
CSSValueID value_id = range.Peek().Id();
switch (value_id) {
case CSSValueID::kJis78:
case CSSValueID::kJis83:
case CSSValueID::kJis90:
case CSSValueID::kJis04:
case CSSValueID::kSimplified:
case CSSValueID::kTraditional:
if (east_asian_form_value_)
return ParseResult::kDisallowedValue;
east_asian_form_value_ =
css_property_parser_helpers::ConsumeIdent(range);
return ParseResult::kConsumedValue;
case CSSValueID::kFullWidth:
case CSSValueID::kProportionalWidth:
if (east_asian_width_value_)
return ParseResult::kDisallowedValue;
east_asian_width_value_ =
css_property_parser_helpers::ConsumeIdent(range);
return ParseResult::kConsumedValue;
case CSSValueID::kRuby:
if (ruby_value_)
return ParseResult::kDisallowedValue;
ruby_value_ = css_property_parser_helpers::ConsumeIdent(range);
return ParseResult::kConsumedValue;
default:
return ParseResult::kUnknownValue;
}
}
CSSValue* FinalizeValue() {
CSSValueList* result = CSSValueList::CreateSpaceSeparated();
if (east_asian_form_value_) {
result->Append(*east_asian_form_value_);
east_asian_form_value_ = nullptr;
}
if (east_asian_width_value_) {
result->Append(*east_asian_width_value_);
east_asian_width_value_ = nullptr;
}
if (ruby_value_) {
result->Append(*ruby_value_);
ruby_value_ = nullptr;
}
if (!result->length())
return CSSIdentifierValue::Create(CSSValueID::kNormal);
return result;
}
private:
CSSIdentifierValue* east_asian_form_value_;
CSSIdentifierValue* east_asian_width_value_;
CSSIdentifierValue* ruby_value_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_PARSER_FONT_VARIANT_EAST_ASIAN_PARSER_H_
|
