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bpo-40939: Remove the old parser (GH-20768)

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This commit removes the old parser, the deprecated parser module, the old parser compatibility flags and environment variables and all associated support code and documentation.
This commit is contained in:
Pablo Galindo 2020-06-11 17:30:46 +01:00 • committed by GitHub
parent 311110abcd
commit 1ed83adb0e
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GPG key ID: 4AEE18F83AFDEB23
53 changed files with 24447 additions and 35978 deletions
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10
Python/initconfig.c
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@ -72,7 +72,6 @@ static const char usage_3[] = "\
-X opt : set implementation-specific option. The following options are available:\n\
\n\
-X faulthandler: enable faulthandler\n\
-X oldparser: enable the traditional LL(1) parser; also PYTHONOLDPARSER\n\
-X showrefcount: output the total reference count and number of used\n\
memory blocks when the program finishes or after each statement in the\n\
interactive interpreter. This only works on debug builds\n\
@ -640,7 +639,6 @@ _PyConfig_InitCompatConfig(PyConfig *config)
#ifdef MS_WINDOWS
config->legacy_windows_stdio = -1;
#endif
config->_use_peg_parser = 1;
}
@ -798,7 +796,6 @@ _PyConfig_Copy(PyConfig *config, const PyConfig *config2)
COPY_ATTR(isolated);
COPY_ATTR(use_environment);
COPY_ATTR(dev_mode);
COPY_ATTR(_use_peg_parser);
COPY_ATTR(install_signal_handlers);
COPY_ATTR(use_hash_seed);
COPY_ATTR(hash_seed);
@ -905,7 +902,6 @@ config_as_dict(const PyConfig *config)
SET_ITEM_INT(isolated);
SET_ITEM_INT(use_environment);
SET_ITEM_INT(dev_mode);
SET_ITEM_INT(_use_peg_parser);
SET_ITEM_INT(install_signal_handlers);
SET_ITEM_INT(use_hash_seed);
SET_ITEM_UINT(hash_seed);
@ -1451,11 +1447,6 @@ config_read_complex_options(PyConfig *config)
config->import_time = 1;
}
if (config_get_env(config, "PYTHONOLDPARSER")
|| config_get_xoption(config, L"oldparser")) {
config->_use_peg_parser = 0;
}
PyStatus status;
if (config->tracemalloc < 0) {
status = config_init_tracemalloc(config);
@ -2549,7 +2540,6 @@ PyConfig_Read(PyConfig *config)
assert(config->isolated >= 0);
assert(config->use_environment >= 0);
assert(config->dev_mode >= 0);
assert(config->_use_peg_parser >= 0);
assert(config->install_signal_handlers >= 0);
assert(config->use_hash_seed >= 0);
assert(config->faulthandler >= 0);