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[GR-34991][GR-28411] Implement pyexpat module
PullRequest: graalpython/2029
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‎CHANGELOG.md

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This changelog summarizes major changes between GraalVM versions of the Python
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language runtime. The main focus is on user-observable behavior of the engine.
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## Version 22.0.0
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* Added support for `pyexpat` module.
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* Added partial support for `PYTHONHASHSEED` environment variable (also available via `HashSeed` context option), currently only affecting hashing in `pyexpat` module.
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## Version 21.3.0
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* Remove PYPY_VERSION from our C extension emulation, enabling PyGame 2.0 and other extensions to work out of the box.
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* Remove `PYPY_VERSION` from our C extension emulation, enabling PyGame 2.0 and other extensions to work out of the box.
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* Intrinsify and optimize more of the core language for better startup and reduced footprint.
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* Implement a new binary compatible backend for HPy 0.0.3, which allows binary HPy wheels to run unmodified on CPython and GraalPython
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* Support the `multiprocessing` module via in-process nested contexts, allowing execution on multiple cores within the same process using the Python multiprocessing API

‎docs/contributor/MISSING.md

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* **nis**: We should just use the C module
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* **syslog**: Access to syslog. We should probably just use this from the C module.
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* **termios**: Posix terminal module IO. Use from C
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* **pyexpat**: We only have a stub in Java. Should use from C.
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#### These are not strictly needed for now
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* **_abc**: Just a performance optimization, not necessary.

‎graalpython/com.oracle.graal.python.cext/expat/ascii.h

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/*
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__ __ _
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___\ \/ /_ __ __ _| |_
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/ _ \\ /| '_ \ / _` | __|
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| __// \| |_) | (_| | |_
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\___/_/\_\ .__/ \__,_|\__|
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|_| XML parser
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Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
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Copyright (c) 2000-2017 Expat development team
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Licensed under the MIT license:
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to permit
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persons to whom the Software is furnished to do so, subject to the
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following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#define ASCII_A 0x41
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#define ASCII_B 0x42
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#define ASCII_C 0x43
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#define ASCII_D 0x44
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#define ASCII_E 0x45
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#define ASCII_F 0x46
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#define ASCII_G 0x47
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#define ASCII_H 0x48
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#define ASCII_I 0x49
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#define ASCII_J 0x4A
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#define ASCII_K 0x4B
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#define ASCII_L 0x4C
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#define ASCII_M 0x4D
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#define ASCII_N 0x4E
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#define ASCII_O 0x4F
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#define ASCII_P 0x50
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#define ASCII_Q 0x51
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#define ASCII_R 0x52
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#define ASCII_S 0x53
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#define ASCII_T 0x54
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#define ASCII_U 0x55
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#define ASCII_V 0x56
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#define ASCII_W 0x57
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#define ASCII_X 0x58
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#define ASCII_Y 0x59
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#define ASCII_Z 0x5A
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#define ASCII_a 0x61
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#define ASCII_b 0x62
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#define ASCII_c 0x63
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#define ASCII_d 0x64
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#define ASCII_e 0x65
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#define ASCII_f 0x66
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#define ASCII_g 0x67
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#define ASCII_h 0x68
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#define ASCII_i 0x69
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#define ASCII_j 0x6A
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#define ASCII_k 0x6B
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#define ASCII_l 0x6C
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#define ASCII_m 0x6D
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#define ASCII_n 0x6E
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#define ASCII_o 0x6F
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#define ASCII_p 0x70
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#define ASCII_q 0x71
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#define ASCII_r 0x72
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#define ASCII_s 0x73
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#define ASCII_t 0x74
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#define ASCII_u 0x75
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#define ASCII_v 0x76
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#define ASCII_w 0x77
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#define ASCII_x 0x78
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#define ASCII_y 0x79
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#define ASCII_z 0x7A
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#define ASCII_0 0x30
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#define ASCII_1 0x31
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#define ASCII_2 0x32
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#define ASCII_3 0x33
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#define ASCII_4 0x34
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#define ASCII_5 0x35
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#define ASCII_6 0x36
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#define ASCII_7 0x37
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#define ASCII_8 0x38
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#define ASCII_9 0x39
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#define ASCII_TAB 0x09
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#define ASCII_SPACE 0x20
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#define ASCII_EXCL 0x21
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#define ASCII_QUOT 0x22
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#define ASCII_AMP 0x26
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#define ASCII_APOS 0x27
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#define ASCII_MINUS 0x2D
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#define ASCII_PERIOD 0x2E
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#define ASCII_COLON 0x3A
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#define ASCII_SEMI 0x3B
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#define ASCII_LT 0x3C
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#define ASCII_EQUALS 0x3D
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#define ASCII_GT 0x3E
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#define ASCII_LSQB 0x5B
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#define ASCII_RSQB 0x5D
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#define ASCII_UNDERSCORE 0x5F
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#define ASCII_LPAREN 0x28
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#define ASCII_RPAREN 0x29
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#define ASCII_FF 0x0C
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#define ASCII_SLASH 0x2F
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#define ASCII_HASH 0x23
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#define ASCII_PIPE 0x7C
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#define ASCII_COMMA 0x2C

‎graalpython/com.oracle.graal.python.cext/expat/asciitab.h

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/*
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__ __ _
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___\ \/ /_ __ __ _| |_
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/ _ \\ /| '_ \ / _` | __|
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| __// \| |_) | (_| | |_
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\___/_/\_\ .__/ \__,_|\__|
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|_| XML parser
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Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
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Copyright (c) 2000-2017 Expat development team
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Licensed under the MIT license:
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to permit
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persons to whom the Software is furnished to do so, subject to the
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following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* 0x00 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
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/* 0x04 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
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/* 0x08 */ BT_NONXML, BT_S, BT_LF, BT_NONXML,
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/* 0x0C */ BT_NONXML, BT_CR, BT_NONXML, BT_NONXML,
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/* 0x10 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
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/* 0x14 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
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/* 0x18 */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
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/* 0x1C */ BT_NONXML, BT_NONXML, BT_NONXML, BT_NONXML,
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/* 0x20 */ BT_S, BT_EXCL, BT_QUOT, BT_NUM,
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/* 0x24 */ BT_OTHER, BT_PERCNT, BT_AMP, BT_APOS,
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/* 0x28 */ BT_LPAR, BT_RPAR, BT_AST, BT_PLUS,
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/* 0x2C */ BT_COMMA, BT_MINUS, BT_NAME, BT_SOL,
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/* 0x30 */ BT_DIGIT, BT_DIGIT, BT_DIGIT, BT_DIGIT,
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/* 0x34 */ BT_DIGIT, BT_DIGIT, BT_DIGIT, BT_DIGIT,
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/* 0x38 */ BT_DIGIT, BT_DIGIT, BT_COLON, BT_SEMI,
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/* 0x3C */ BT_LT, BT_EQUALS, BT_GT, BT_QUEST,
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/* 0x40 */ BT_OTHER, BT_HEX, BT_HEX, BT_HEX,
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/* 0x44 */ BT_HEX, BT_HEX, BT_HEX, BT_NMSTRT,
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/* 0x48 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
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/* 0x4C */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
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/* 0x50 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
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/* 0x54 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
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/* 0x58 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_LSQB,
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/* 0x5C */ BT_OTHER, BT_RSQB, BT_OTHER, BT_NMSTRT,
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/* 0x60 */ BT_OTHER, BT_HEX, BT_HEX, BT_HEX,
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/* 0x64 */ BT_HEX, BT_HEX, BT_HEX, BT_NMSTRT,
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/* 0x68 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
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/* 0x6C */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
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/* 0x70 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
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/* 0x74 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_NMSTRT,
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/* 0x78 */ BT_NMSTRT, BT_NMSTRT, BT_NMSTRT, BT_OTHER,
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/* 0x7C */ BT_VERBAR, BT_OTHER, BT_OTHER, BT_OTHER,

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