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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
// Copyright 2007-2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifdef ENABLE_DEBUGGER_SUPPORT
#include <stdlib.h>
#include "v8.h"
#include "liveedit.h"
#include "cctest.h"
using namespace v8::internal;
// Anonymous namespace.
namespace {
class StringCompareInput : public Comparator::Input {
public:
StringCompareInput(const char* s1, const char* s2) : s1_(s1), s2_(s2) {
}
int getLength1() {
return StrLength(s1_);
}
int getLength2() {
return StrLength(s2_);
}
bool equals(int index1, int index2) {
return s1_[index1] == s2_[index2];
}
private:
const char* s1_;
const char* s2_;
};
class DiffChunkStruct : public ZoneObject {
public:
DiffChunkStruct(int pos1_param, int pos2_param,
int len1_param, int len2_param)
: pos1(pos1_param), pos2(pos2_param),
len1(len1_param), len2(len2_param), next(NULL) {}
int pos1;
int pos2;
int len1;
int len2;
DiffChunkStruct* next;
};
class ListDiffOutputWriter : public Comparator::Output {
public:
explicit ListDiffOutputWriter(DiffChunkStruct** next_chunk_pointer)
: next_chunk_pointer_(next_chunk_pointer) {
(*next_chunk_pointer_) = NULL;
}
void AddChunk(int pos1, int pos2, int len1, int len2) {
current_chunk_ = new DiffChunkStruct(pos1, pos2, len1, len2);
(*next_chunk_pointer_) = current_chunk_;
next_chunk_pointer_ = ¤t_chunk_->next;
}
private:
DiffChunkStruct** next_chunk_pointer_;
DiffChunkStruct* current_chunk_;
};
void CompareStringsOneWay(const char* s1, const char* s2,
int expected_diff_parameter = -1) {
StringCompareInput input(s1, s2);
ZoneScope zone_scope(DELETE_ON_EXIT);
DiffChunkStruct* first_chunk;
ListDiffOutputWriter writer(&first_chunk);
Comparator::CalculateDifference(&input, &writer);
int len1 = StrLength(s1);
int len2 = StrLength(s2);
int pos1 = 0;
int pos2 = 0;
int diff_parameter = 0;
for (DiffChunkStruct* chunk = first_chunk;
chunk != NULL;
chunk = chunk->next) {
int diff_pos1 = chunk->pos1;
int similar_part_length = diff_pos1 - pos1;
int diff_pos2 = pos2 + similar_part_length;
ASSERT_EQ(diff_pos2, chunk->pos2);
for (int j = 0; j < similar_part_length; j++) {
ASSERT(pos1 + j < len1);
ASSERT(pos2 + j < len2);
ASSERT_EQ(s1[pos1 + j], s2[pos2 + j]);
}
diff_parameter += chunk->len1 + chunk->len2;
pos1 = diff_pos1 + chunk->len1;
pos2 = diff_pos2 + chunk->len2;
}
{
// After last chunk.
int similar_part_length = len1 - pos1;
ASSERT_EQ(similar_part_length, len2 - pos2);
USE(len2);
for (int j = 0; j < similar_part_length; j++) {
ASSERT(pos1 + j < len1);
ASSERT(pos2 + j < len2);
ASSERT_EQ(s1[pos1 + j], s2[pos2 + j]);
}
}
if (expected_diff_parameter != -1) {
ASSERT_EQ(expected_diff_parameter, diff_parameter);
}
}
void CompareStrings(const char* s1, const char* s2,
int expected_diff_parameter = -1) {
CompareStringsOneWay(s1, s2, expected_diff_parameter);
CompareStringsOneWay(s2, s1, expected_diff_parameter);
}
} // Anonymous namespace.
// --- T h e A c t u a l T e s t s
TEST(LiveEditDiffer) {
CompareStrings("zz1zzz12zz123zzz", "zzzzzzzzzz", 6);
CompareStrings("zz1zzz12zz123zzz", "zz0zzz0zz0zzz", 9);
CompareStrings("123456789", "987654321", 16);
CompareStrings("zzz", "yyy", 6);
CompareStrings("zzz", "zzz12", 2);
CompareStrings("zzz", "21zzz", 2);
CompareStrings("cat", "cut", 2);
CompareStrings("ct", "cut", 1);
CompareStrings("cat", "ct", 1);
CompareStrings("cat", "cat", 0);
CompareStrings("", "", 0);
CompareStrings("cat", "", 3);
CompareStrings("a cat", "a capybara", 7);
CompareStrings("abbabababababaaabbabababababbabbbbbbbababa",
"bbbbabababbbabababbbabababababbabbababa");
}
#endif // ENABLE_DEBUGGER_SUPPORT
|
