mirror of
https://github.com/python/cpython.git
synced 2025-10-31 18:28:49 +00:00
3c3aa4516c
There are two copies of the grammar -- the one used by Python itself as Grammar/Grammar, and the one used by lib2to3 which has necessarily diverged at Lib/lib2to3/Grammar.txt because it needs to support older syntax an we want it to be reasonable stable to avoid requiring fixer rewrites. This brings suport for syntax like `if x:= foo():` to match what the live Python grammar does. This should've been added at the time of the walrus operator itself, but lib2to3 being independent is often overlooked. So we do consider this a bugfix rather than enhancement.
86 lines
1.3 KiB
Python
Executable file
86 lines
1.3 KiB
Python
Executable file
#! /usr/bin/env python3
|
|
|
|
"""Token constants (from "token.h")."""
|
|
|
|
# Taken from Python (r53757) and modified to include some tokens
|
|
# originally monkeypatched in by pgen2.tokenize
|
|
|
|
#--start constants--
|
|
ENDMARKER = 0
|
|
NAME = 1
|
|
NUMBER = 2
|
|
STRING = 3
|
|
NEWLINE = 4
|
|
INDENT = 5
|
|
DEDENT = 6
|
|
LPAR = 7
|
|
RPAR = 8
|
|
LSQB = 9
|
|
RSQB = 10
|
|
COLON = 11
|
|
COMMA = 12
|
|
SEMI = 13
|
|
PLUS = 14
|
|
MINUS = 15
|
|
STAR = 16
|
|
SLASH = 17
|
|
VBAR = 18
|
|
AMPER = 19
|
|
LESS = 20
|
|
GREATER = 21
|
|
EQUAL = 22
|
|
DOT = 23
|
|
PERCENT = 24
|
|
BACKQUOTE = 25
|
|
LBRACE = 26
|
|
RBRACE = 27
|
|
EQEQUAL = 28
|
|
NOTEQUAL = 29
|
|
LESSEQUAL = 30
|
|
GREATEREQUAL = 31
|
|
TILDE = 32
|
|
CIRCUMFLEX = 33
|
|
LEFTSHIFT = 34
|
|
RIGHTSHIFT = 35
|
|
DOUBLESTAR = 36
|
|
PLUSEQUAL = 37
|
|
MINEQUAL = 38
|
|
STAREQUAL = 39
|
|
SLASHEQUAL = 40
|
|
PERCENTEQUAL = 41
|
|
AMPEREQUAL = 42
|
|
VBAREQUAL = 43
|
|
CIRCUMFLEXEQUAL = 44
|
|
LEFTSHIFTEQUAL = 45
|
|
RIGHTSHIFTEQUAL = 46
|
|
DOUBLESTAREQUAL = 47
|
|
DOUBLESLASH = 48
|
|
DOUBLESLASHEQUAL = 49
|
|
AT = 50
|
|
ATEQUAL = 51
|
|
OP = 52
|
|
COMMENT = 53
|
|
NL = 54
|
|
RARROW = 55
|
|
AWAIT = 56
|
|
ASYNC = 57
|
|
ERRORTOKEN = 58
|
|
COLONEQUAL = 59
|
|
N_TOKENS = 60
|
|
NT_OFFSET = 256
|
|
#--end constants--
|
|
|
|
tok_name = {}
|
|
for _name, _value in list(globals().items()):
|
|
if type(_value) is type(0):
|
|
tok_name[_value] = _name
|
|
|
|
|
|
def ISTERMINAL(x):
|
|
return x < NT_OFFSET
|
|
|
|
def ISNONTERMINAL(x):
|
|
return x >= NT_OFFSET
|
|
|
|
def ISEOF(x):
|
|
return x == ENDMARKER
|