djavu-asus/elpy/rpc-venv/lib/python3.11/site-packages/blib2to3/pygram.py

   1 # Copyright 2006 Google, Inc. All Rights Reserved.
   2 # Licensed to PSF under a Contributor Agreement.
   3
   4 """Export the Python grammar and symbols."""
   5
   6 # Python imports
   7 import os
   8 from typing import Union
   9
  10 # Local imports
  11 from .pgen2 import driver
  12 from .pgen2.grammar import Grammar
  13
  14 # Moved into initialize because mypyc can't handle __file__ (XXX bug)
  15 # # The grammar file
  16 # _GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), "Grammar.txt")
  17 # _PATTERN_GRAMMAR_FILE = os.path.join(os.path.dirname(__file__),
  18 #                                      "PatternGrammar.txt")
  19
  20
  21 class Symbols:
  22     def __init__(self, grammar: Grammar) -> None:
  23         """Initializer.
  24
  25         Creates an attribute for each grammar symbol (nonterminal),
  26         whose value is the symbol's type (an int >= 256).
  27         """
  28         for name, symbol in grammar.symbol2number.items():
  29             setattr(self, name, symbol)
  30
  31
  32 class _python_symbols(Symbols):
  33     and_expr: int
  34     and_test: int
  35     annassign: int
  36     arglist: int
  37     argument: int
  38     arith_expr: int
  39     asexpr_test: int
  40     assert_stmt: int
  41     async_funcdef: int
  42     async_stmt: int
  43     atom: int
  44     augassign: int
  45     break_stmt: int
  46     case_block: int
  47     classdef: int
  48     comp_for: int
  49     comp_if: int
  50     comp_iter: int
  51     comp_op: int
  52     comparison: int
  53     compound_stmt: int
  54     continue_stmt: int
  55     decorated: int
  56     decorator: int
  57     decorators: int
  58     del_stmt: int
  59     dictsetmaker: int
  60     dotted_as_name: int
  61     dotted_as_names: int
  62     dotted_name: int
  63     encoding_decl: int
  64     eval_input: int
  65     except_clause: int
  66     exec_stmt: int
  67     expr: int
  68     expr_stmt: int
  69     exprlist: int
  70     factor: int
  71     file_input: int
  72     flow_stmt: int
  73     for_stmt: int
  74     funcdef: int
  75     global_stmt: int
  76     guard: int
  77     if_stmt: int
  78     import_as_name: int
  79     import_as_names: int
  80     import_from: int
  81     import_name: int
  82     import_stmt: int
  83     lambdef: int
  84     listmaker: int
  85     match_stmt: int
  86     namedexpr_test: int
  87     not_test: int
  88     old_comp_for: int
  89     old_comp_if: int
  90     old_comp_iter: int
  91     old_lambdef: int
  92     old_test: int
  93     or_test: int
  94     parameters: int
  95     paramspec: int
  96     pass_stmt: int
  97     pattern: int
  98     patterns: int
  99     power: int
 100     print_stmt: int
 101     raise_stmt: int
 102     return_stmt: int
 103     shift_expr: int
 104     simple_stmt: int
 105     single_input: int
 106     sliceop: int
 107     small_stmt: int
 108     subject_expr: int
 109     star_expr: int
 110     stmt: int
 111     subscript: int
 112     subscriptlist: int
 113     suite: int
 114     term: int
 115     test: int
 116     testlist: int
 117     testlist1: int
 118     testlist_gexp: int
 119     testlist_safe: int
 120     testlist_star_expr: int
 121     tfpdef: int
 122     tfplist: int
 123     tname: int
 124     tname_star: int
 125     trailer: int
 126     try_stmt: int
 127     type_stmt: int
 128     typedargslist: int
 129     typeparam: int
 130     typeparams: int
 131     typevar: int
 132     typevartuple: int
 133     varargslist: int
 134     vfpdef: int
 135     vfplist: int
 136     vname: int
 137     while_stmt: int
 138     with_stmt: int
 139     xor_expr: int
 140     yield_arg: int
 141     yield_expr: int
 142     yield_stmt: int
 143
 144
 145 class _pattern_symbols(Symbols):
 146     Alternative: int
 147     Alternatives: int
 148     Details: int
 149     Matcher: int
 150     NegatedUnit: int
 151     Repeater: int
 152     Unit: int
 153
 154
 155 python_grammar: Grammar
 156 python_grammar_no_print_statement: Grammar
 157 python_grammar_no_print_statement_no_exec_statement: Grammar
 158 python_grammar_no_print_statement_no_exec_statement_async_keywords: Grammar
 159 python_grammar_no_exec_statement: Grammar
 160 pattern_grammar: Grammar
 161 python_grammar_soft_keywords: Grammar
 162
 163 python_symbols: _python_symbols
 164 pattern_symbols: _pattern_symbols
 165
 166
 167 def initialize(cache_dir: Union[str, "os.PathLike[str]", None] = None) -> None:
 168     global python_grammar
 169     global python_grammar_no_print_statement
 170     global python_grammar_no_print_statement_no_exec_statement
 171     global python_grammar_no_print_statement_no_exec_statement_async_keywords
 172     global python_grammar_soft_keywords
 173     global python_symbols
 174     global pattern_grammar
 175     global pattern_symbols
 176
 177     # The grammar file
 178     _GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), "Grammar.txt")
 179     _PATTERN_GRAMMAR_FILE = os.path.join(
 180         os.path.dirname(__file__), "PatternGrammar.txt"
 181     )
 182
 183     # Python 2
 184     python_grammar = driver.load_packaged_grammar("blib2to3", _GRAMMAR_FILE, cache_dir)
 185     python_grammar.version = (2, 0)
 186
 187     soft_keywords = python_grammar.soft_keywords.copy()
 188     python_grammar.soft_keywords.clear()
 189
 190     python_symbols = _python_symbols(python_grammar)
 191
 192     # Python 2 + from __future__ import print_function
 193     python_grammar_no_print_statement = python_grammar.copy()
 194     del python_grammar_no_print_statement.keywords["print"]
 195
 196     # Python 3.0-3.6
 197     python_grammar_no_print_statement_no_exec_statement = python_grammar.copy()
 198     del python_grammar_no_print_statement_no_exec_statement.keywords["print"]
 199     del python_grammar_no_print_statement_no_exec_statement.keywords["exec"]
 200     python_grammar_no_print_statement_no_exec_statement.version = (3, 0)
 201
 202     # Python 3.7+
 203     python_grammar_no_print_statement_no_exec_statement_async_keywords = (
 204         python_grammar_no_print_statement_no_exec_statement.copy()
 205     )
 206     python_grammar_no_print_statement_no_exec_statement_async_keywords.async_keywords = (
 207         True
 208     )
 209     python_grammar_no_print_statement_no_exec_statement_async_keywords.version = (3, 7)
 210
 211     # Python 3.10+
 212     python_grammar_soft_keywords = (
 213         python_grammar_no_print_statement_no_exec_statement_async_keywords.copy()
 214     )
 215     python_grammar_soft_keywords.soft_keywords = soft_keywords
 216     python_grammar_soft_keywords.version = (3, 10)
 217
 218     pattern_grammar = driver.load_packaged_grammar(
 219         "blib2to3", _PATTERN_GRAMMAR_FILE, cache_dir
 220     )
 221     pattern_symbols = _pattern_symbols(pattern_grammar)