1============ 2These pieces of code were ported from dotnet/corefx: 3 4syntax/charclass.go (from RegexCharClass.cs): ported to use the built-in Go unicode classes. Canonicalize is 5 a direct port, but most of the other code required large changes because the C# implementation 6 used a string to represent the CharSet data structure and I cleaned that up in my implementation. 7 8syntax/code.go (from RegexCode.cs): ported literally with various cleanups and layout to make it more Go-ish. 9 10syntax/escape.go (from RegexParser.cs): ported Escape method and added some optimizations. Unescape is inspired by 11 the C# implementation but couldn't be directly ported because of the lack of do-while syntax in Go. 12 13syntax/parser.go (from RegexpParser.cs and RegexOptions.cs): ported parser struct and associated methods as 14 literally as possible. Several language differences required changes. E.g. lack pre/post-fix increments as 15 expressions, lack of do-while loops, lack of overloads, etc. 16 17syntax/prefix.go (from RegexFCD.cs and RegexBoyerMoore.cs): ported as literally as possible and added support 18 for unicode chars that are longer than the 16-bit char in C# for the 32-bit rune in Go. 19 20syntax/replacerdata.go (from RegexReplacement.cs): conceptually ported and re-organized to handle differences 21 in charclass implementation, and fix odd code layout between RegexParser.cs, Regex.cs, and RegexReplacement.cs. 22 23syntax/tree.go (from RegexTree.cs and RegexNode.cs): ported literally as possible. 24 25syntax/writer.go (from RegexWriter.cs): ported literally with minor changes to make it more Go-ish. 26 27match.go (from RegexMatch.cs): ported, simplified, and changed to handle Go's lack of inheritence. 28 29regexp.go (from Regex.cs and RegexOptions.cs): conceptually serves the same "starting point", but is simplified 30 and changed to handle differences in C# strings and Go strings/runes. 31 32replace.go (from RegexReplacement.cs): ported closely and then cleaned up to combine the MatchEvaluator and 33 simple string replace implementations. 34 35runner.go (from RegexRunner.cs): ported literally as possible. 36 37regexp_test.go (from CaptureTests.cs and GroupNamesAndNumbers.cs): conceptually ported, but the code was 38 manually structured like Go tests. 39 40replace_test.go (from RegexReplaceStringTest0.cs): conceptually ported 41 42rtl_test.go (from RightToLeft.cs): conceptually ported 43--- 44dotnet/corefx was released under this license: 45 46The MIT License (MIT) 47 48Copyright (c) Microsoft Corporation 49 50Permission is hereby granted, free of charge, to any person obtaining a copy 51of this software and associated documentation files (the "Software"), to deal 52in the Software without restriction, including without limitation the rights 53to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 54copies of the Software, and to permit persons to whom the Software is 55furnished to do so, subject to the following conditions: 56 57The above copyright notice and this permission notice shall be included in all 58copies or substantial portions of the Software. 59 60THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 61IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 62FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 63AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 64LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 65OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 66SOFTWARE. 67 68============ 69These pieces of code are copied from the Go framework: 70 71- The overall directory structure of regexp2 was inspired by the Go runtime regexp package. 72- The optimization in the escape method of syntax/escape.go is from the Go runtime QuoteMeta() func in regexp/regexp.go 73- The method signatures in regexp.go are designed to match the Go framework regexp methods closely 74- func regexp2.MustCompile and func quote are almost identifical to the regexp package versions 75- BenchmarkMatch* and TestProgramTooLong* funcs in regexp_performance_test.go were copied from the framework 76 regexp/exec_test.go 77--- 78The Go framework was released under this license: 79 80Copyright (c) 2012 The Go Authors. All rights reserved. 81 82Redistribution and use in source and binary forms, with or without 83modification, are permitted provided that the following conditions are 84met: 85 86 * Redistributions of source code must retain the above copyright 87notice, this list of conditions and the following disclaimer. 88 * Redistributions in binary form must reproduce the above 89copyright notice, this list of conditions and the following disclaimer 90in the documentation and/or other materials provided with the 91distribution. 92 * Neither the name of Google Inc. nor the names of its 93contributors may be used to endorse or promote products derived from 94this software without specific prior written permission. 95 96THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 97"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 98LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 99A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 100OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 101SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 102LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 103DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 104THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 105(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 106OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 107 108============ 109Some test data were gathered from the Mono project. 110 111regexp_mono_test.go: ported from https://github.com/mono/mono/blob/master/mcs/class/System/Test/System.Text.RegularExpressions/PerlTrials.cs 112--- 113Mono tests released under this license: 114 115Permission is hereby granted, free of charge, to any person obtaining 116a copy of this software and associated documentation files (the 117"Software"), to deal in the Software without restriction, including 118without limitation the rights to use, copy, modify, merge, publish, 119distribute, sublicense, and/or sell copies of the Software, and to 120permit persons to whom the Software is furnished to do so, subject to 121the following conditions: 122 123The above copyright notice and this permission notice shall be 124included in all copies or substantial portions of the Software. 125 126THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 127EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 128MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 129NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 130LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 131OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 132WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 133 134