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| author | Lysandros Nikolaou <lisandrosnik@gmail.com> | 2020-10-26 22:42:04 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-10-26 22:42:04 (GMT) |
| commit | bca701403253379409dece03053dbd739c0bd059 (patch) | |
| tree | 9222677d56d4669ac00f734ffeb7d72797bb6a89 /Misc | |
| parent | c8c4200b65b2159bbb13cee10d67dfb3676fef26 (diff) | |
| download | cpython-bca701403253379409dece03053dbd739c0bd059.zip cpython-bca701403253379409dece03053dbd739c0bd059.tar.gz cpython-bca701403253379409dece03053dbd739c0bd059.tar.bz2 | |
bpo-42123: Run the parser two times and only enable invalid rules on the second run (GH-22111)
* Implement running the parser a second time for the errors messages
The first parser run is only responsible for detecting whether
there is a `SyntaxError` or not. If there isn't the AST gets returned.
Otherwise, the parser is run a second time with all the `invalid_*`
rules enabled so that all the customized error messages get produced.
Diffstat (limited to 'Misc')
| -rw-r--r-- | Misc/NEWS.d/next/Core and Builtins/2020-10-23-02-43-24.bpo-42123.64gJWC.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-10-23-02-43-24.bpo-42123.64gJWC.rst b/Misc/NEWS.d/next/Core and Builtins/2020-10-23-02-43-24.bpo-42123.64gJWC.rst new file mode 100644 index 0000000..6461efd --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2020-10-23-02-43-24.bpo-42123.64gJWC.rst @@ -0,0 +1,3 @@ +Run the parser two times. On the first run, disable all the rules that only +generate better error messages to gain performance. If there's a parse +failure, run the parser a second time with those enabled. |