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Side by Side Diff: Source/core/scripts/StaticString.pm

Issue 21437003: Remove the pointer from StringImpl (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Now with placement new Created 7 years, 4 months ago
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1 # Copyright (C) 2013 Google, Inc. All Rights Reserved. 1 # Copyright (C) 2013 Google, Inc. All Rights Reserved.
2 # 2 #
3 # Redistribution and use in source and binary forms, with or without 3 # Redistribution and use in source and binary forms, with or without
4 # modification, are permitted provided that the following conditions 4 # modification, are permitted provided that the following conditions
5 # are met: 5 # are met:
6 # 1. Redistributions of source code must retain the above copyright 6 # 1. Redistributions of source code must retain the above copyright
7 # notice, this list of conditions and the following disclaimer. 7 # notice, this list of conditions and the following disclaimer.
8 # 2. Redistributions in binary form must reproduce the above copyright 8 # 2. Redistributions in binary form must reproduce the above copyright
9 # notice, this list of conditions and the following disclaimer in the 9 # notice, this list of conditions and the following disclaimer in the
10 # documentation and/or other materials provided with the distribution. 10 # documentation and/or other materials provided with the distribution.
11 # 11 #
12 # THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 12 # THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
13 # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 13 # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
14 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 14 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
15 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 15 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
16 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 16 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
17 # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 17 # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
18 # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 18 # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
19 # PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 19 # PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
20 # OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 20 # OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 21 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 22 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 23
24 package StaticString; 24 package StaticString;
25 25
26 use strict; 26 use strict;
27 use Hasher; 27 use Hasher;
28 28
29 sub GenerateStrings($) 29 sub GenerateStringDecls($)
30 { 30 {
31 my $stringsRef = shift; 31 my $stringsRef = shift;
32 my %strings = %$stringsRef; 32 my %strings = %$stringsRef;
33 33
34 my @result = (); 34 my @result = ();
35 35
36 push(@result, "\n"); 36 push(@result, "\n");
37 37
38 while ( my ($name, $value) = each %strings ) { 38 while ( my ($name, $value) = each %strings ) {
39 push(@result, "static const LChar ${name}String8[] = \"${value}\";\n"); 39 my $length = length($value);
40 push(@result, <<END);
41 static struct {
42 const char header[sizeof(StringImpl)];
43 const char data[$length + 1];
44 } ${name}Data = {
45 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
46 "${value}",
47 };
48 END
40 } 49 }
41 50
51 return join "", @result;
52 }
53
54 sub GenerateStringImpls($)
55 {
56 my $stringsRef = shift;
57 my %strings = %$stringsRef;
58
59 my @result = ();
60
42 push(@result, "\n"); 61 push(@result, "\n");
43 62
44 while ( my ($name, $value) = each %strings ) { 63 while ( my ($name, $value) = each %strings ) {
45 my $length = length($value); 64 my $length = length($value);
46 my $hash = Hasher::GenerateHashValue($value); 65 my $hash = Hasher::GenerateHashValue($value);
47 push(@result, <<END); 66 push(@result, " StringImpl* ${name}Impl = new ((void*)&${name}Data.he ader) StringImpl($length, $hash, StringImpl::StaticString);\n");
48 static StringImpl::StaticASCIILiteral ${name}Data = {
49 ${name}String8,
50 StringImpl::StaticASCIILiteral::s_initialRefCount,
51 $length,
52 StringImpl::StaticASCIILiteral::s_initialFlags | (${hash} << StringImpl::Sta ticASCIILiteral::s_hashShift)
53 };
54 END
55 }
56
57 push(@result, "\n");
58
59 while ( my ($name, $value) = each %strings ) {
60 push(@result, "static StringImpl* ${name}Impl = reinterpret_cast<StringI mpl*>(&${name}Data);\n");
61 } 67 }
62 68
63 push(@result, "\n"); 69 push(@result, "\n");
64 70
65 return join "", @result; 71 return join "", @result;
66 }
67
68 sub GenerateStringAsserts($)
69 {
70 my $stringsRef = shift;
71 my %strings = %$stringsRef;
72
73 my @result = ();
74
75 push(@result, "#ifndef NDEBUG\n");
76
77 while ( my ($name, $value) = each %strings ) {
78 push(@result, " ${name}Impl->assertHashIsCorrect();\n");
79 }
80
81 push(@result, "#endif // NDEBUG\n");
82
83 push(@result, "\n");
84
85 return join "", @result;
86 } 72 }
87 73
88 1; 74 1;
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