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Title: bpo-40902: Speed up PEG parser by using Dijkstra's shunting yard algorithm by pablogsal · Pull Request #20696 · python/cpython · GitHub

Open Graph Title: bpo-40902: Speed up PEG parser by using Dijkstra's shunting yard algorithm by pablogsal · Pull Request #20696 · python/cpython

X Title: bpo-40902: Speed up PEG parser by using Dijkstra's shunting yard algorithm by pablogsal · Pull Request #20696 · python/cpython

Description: https://bugs.python.org/issue40902

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bpo-40902: Speed up PEG parser by using Dijkstra's shunting yard algorithm https://github.com/python/cpython/pull/20696/files#top
Show all changes 19 commits https://github.com/python/cpython/pull/20696/files
83337b3 WIP of operator precedence pablogsal Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/83337b3aedf25d3a51eca910b7536eaedbeeb576
9e25541 Generate precedence table pablogsal Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/9e25541c01111f2a6b144ef47f5f0c8197d76a4b
0366b96 Fix test_ast and test_type_comments and address feedback pablogsal Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/0366b968cecd29ff1d6012aa4c8a43cdcc3eef8f
2f979f9 Use a struct to keep track of the augmented info pablogsal Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/2f979f94d9a192a6961c57c0971d2b3a4c249a2b
c51f1ad Remove the macro into a static inline function pablogsal Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/c51f1ad6c78060bc4b20c64c5e7e358712a0dbbd
d0e3ef5 Minor cleanup gvanrossum Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/d0e3ef58dc86c13077d92a3e0330a60a9b3321ff
8f12437 Replace operators[i] with values[i].oper gvanrossum Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/8f1243745c42a91dfc1c1d10a38c605f0682381e
2372f5e Eliminate stack_pos -- it's always output_pos - 1 gvanrossum Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/2372f5e02bd3e5a02ea7190252375f3f4e62cd8a
9398d8f Tiny cleanup gvanrossum Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/9398d8f59ca3bf9913da3a6e6c171ad728807805
1554dea Rename values->stack, output_ptr->stack_top gvanrossum Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/1554dea1db567ff9a97f05e3eb918186acee77c6
0b6f84a Use member assignments instead of creating a new ValueItem gvanrossum Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/0b6f84aa01b3b069cf33739aca26d508707f7ccc
8dd799b Slight tweak of _reduction_step() gvanrossum Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/8dd799be2abd8c029a9e1f832432b3bb8baf6e80
08e588b Raise for now if the associativity of the operators is not 'left' pablogsal Jun 7, 2020 https://github.com/python/cpython/pull/20696/commits/08e588bc41e2f18928dc2fbd6f1e827f2cadb838
882c740 Add a huge block comment explaining the operator precedence parser gvanrossum Jun 8, 2020 https://github.com/python/cpython/pull/20696/commits/882c74095bd0d34e226ee6b9a3bf6a3177ee9ba1
13de6ab Merge remote-tracking branch 'upstream/master' into operator_precedence pablogsal Jun 8, 2020 https://github.com/python/cpython/pull/20696/commits/13de6ab48ecfcb8d69fc867f7d3303251f3c9398
10bc620 Implement right-associative operators pablogsal Jun 8, 2020 https://github.com/python/cpython/pull/20696/commits/10bc6204c6d2093d1fd8efe1ec0ad2bcf927ab32
5320f37 Better error handling pablogsal Jun 8, 2020 https://github.com/python/cpython/pull/20696/commits/5320f37c84d8b15239dd81ef4d84c02821027f25
fe2d89c Remove TODO item pablogsal Jun 8, 2020 https://github.com/python/cpython/pull/20696/commits/fe2d89c3f3c6caa2f652050c8855bedd0c4db4a5
6fee838 Do not use yet '**' in the operators list in the grammar pablogsal Jun 8, 2020 https://github.com/python/cpython/pull/20696/commits/6fee838543146eae432f0938cb10b9899991a14a
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