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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* Copyright (c) 2008-2015 Mozilla Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package nu.validator.htmlparser.impl;
import org.xml.sax.SAXException;
import nu.validator.htmlparser.annotation.Literal;
import nu.validator.htmlparser.annotation.Local;
import nu.validator.htmlparser.annotation.NoLength;
import nu.validator.htmlparser.common.Interner;
public final class Portability {
public static int checkedAdd(int a, int b) throws SAXException {
// This can't be translated code, because in C++ signed integer overflow is UB, so the below code would be wrong.
assert a >= 0;
assert b >= 0;
int sum = a + b;
if (sum < a || sum < b) {
throw new SAXException("Integer overflow");
}
return sum;
}
// Allocating methods
/**
* Allocates a new local name object. In C++, the refcount must be set up in such a way that
* calling <code>releaseLocal</code> on the return value balances the refcount set by this method.
*/
public static @Local String newLocalNameFromBuffer(@NoLength char[] buf, int length, Interner interner) {
return new String(buf, 0, length).intern();
}
public static String newStringFromBuffer(@NoLength char[] buf, int offset, int length
// CPPONLY: , TreeBuilder treeBuilder, boolean maybeAtomize
) {
return new String(buf, offset, length);
}
public static String newEmptyString() {
return "";
}
public static String newStringFromLiteral(@Literal String literal) {
return literal;
}
public static String newStringFromString(String string) {
return string;
}
// XXX get rid of this
public static char[] newCharArrayFromLocal(@Local String local) {
return local.toCharArray();
}
public static char[] newCharArrayFromString(String string) {
return string.toCharArray();
}
// Deallocation methods
public static void releaseString(String str) {
// No-op in Java
}
// Comparison methods
public static boolean localEqualsBuffer(@Local String local, @NoLength char[] buf, int length) {
if (local.length() != length) {
return false;
}
for (int i = 0; i < length; i++) {
if (local.charAt(i) != buf[i]) {
return false;
}
}
return true;
}
public static boolean lowerCaseLiteralIsPrefixOfIgnoreAsciiCaseString(@Literal String lowerCaseLiteral,
String string) {
if (string == null) {
return false;
}
if (lowerCaseLiteral.length() > string.length()) {
return false;
}
for (int i = 0; i < lowerCaseLiteral.length(); i++) {
char c0 = lowerCaseLiteral.charAt(i);
char c1 = string.charAt(i);
if (c1 >= 'A' && c1 <= 'Z') {
c1 += 0x20;
}
if (c0 != c1) {
return false;
}
}
return true;
}
public static boolean lowerCaseLiteralEqualsIgnoreAsciiCaseString(@Literal String lowerCaseLiteral,
String string) {
if (string == null) {
return false;
}
if (lowerCaseLiteral.length() != string.length()) {
return false;
}
for (int i = 0; i < lowerCaseLiteral.length(); i++) {
char c0 = lowerCaseLiteral.charAt(i);
char c1 = string.charAt(i);
if (c1 >= 'A' && c1 <= 'Z') {
c1 += 0x20;
}
if (c0 != c1) {
return false;
}
}
return true;
}
public static boolean literalEqualsString(@Literal String literal, String string) {
return literal.equals(string);
}
public static boolean stringEqualsString(String one, String other) {
return one.equals(other);
}
public static void delete(Object o) {
}
public static void deleteArray(Object o) {
}
}
|
