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gh-85098: Implement functional CLI of symtable #109112

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Merged
merged 6 commits into from
Nov 7, 2023
Merged

gh-85098: Implement functional CLI of symtable #109112

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7754ac6
Improve CLI of symtable.
serhiy-storchaka Mar 21, 2020
4d70761
Merge branch 'main' into wip-symtable
serhiy-storchaka Sep 7, 2023
9e575aa
Add tests and docs, change output.
serhiy-storchaka Sep 8, 2023
640992a
Merge branch 'main' into wip-symtable
serhiy-storchaka Sep 8, 2023
dd9341b
Merge branch 'main' into wip-symtable
serhiy-storchaka Oct 14, 2023
c684251
Merge branch 'main' into wip-symtable
pablogsal Nov 7, 2023
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Improve CLI of symtable.
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@serhiy-storchaka
serhiy-storchaka committed Mar 21, 2020
commit 7754ac626fae6b4fcb95f57b40da69b542bfdc09
50 changes: 42 additions & 8 deletions Lib/symtable.py
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Original file line number Diff line number Diff line change
Expand Up @@ -176,7 +176,19 @@ def __init__(self, name, flags, namespaces=None):
self.__namespaces = namespaces or ()

def __repr__(self):
return "<symbol {0!r}>".format(self.__name)
flags_repr = [_scopes_value_to_name.get(self.__scope, str(self.__scope))]
for flagname, flagvalue in _flags.items():
if self.__flags & flagvalue:
flags_repr.append(flagname)
return "<symbol {!r} {}>".format(self.__name, ', '.join(flags_repr))

def _scope_str(self):
return _scopes_value_to_name[self.__scope]

def _flags_str(self):
for flagname, flagvalue in _flags.items():
if self.__flags & flagvalue == flagvalue:
yield flagname

def get_name(self):
return self.__name
Expand Down Expand Up @@ -237,11 +249,33 @@ def get_namespace(self):
raise ValueError("name is bound to multiple namespaces")
return self.__namespaces[0]

_flags = {'USE': USE}
_flags.update(kv for kv in globals().items() if kv[0].startswith('DEF_'))
_scopes_names = ('FREE', 'LOCAL', 'GLOBAL_IMPLICIT', 'GLOBAL_EXPLICIT', 'CELL')
_scopes_name_to_value = {n: globals()[n] for n in _scopes_names}
_scopes_value_to_name = {v: k for k, v in _scopes_name_to_value.items()}


if __name__ == "__main__":
import os, sys
with open(sys.argv[0]) as f:
src = f.read()
mod = symtable(src, os.path.split(sys.argv[0])[1], "exec")
for ident in mod.get_identifiers():
info = mod.lookup(ident)
print(info, info.is_local(), info.is_namespace())
import sys

def print_symbols(table, level=0):
indent = ' ' * level
for ident in table.get_identifiers():
info = table.lookup(ident)
flags = ', '.join(info._flags_str()).lower()
print(f'{indent}{info._scope_str().lower()} symbol {info.get_name()!r}: {flags}')
for table2 in info.get_namespaces():
print_symbols(table2, level + 1)
print()

if len(sys.argv) > 1:
for filename in sys.argv[1:]:
with open(filename, 'rb') as f:
src = f.read()
mod = symtable(src, filename, 'exec')
print_symbols(mod)
else:
src = sys.stdin.read()
mod = symtable(src, '<stdin>', 'exec')
print_symbols(mod)