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cpython/Grammar/Tokens
Marta Gómez Macías 6715f91edc
gh-102856: Python tokenizer implementation for PEP 701 (#104323)
This commit replaces the Python implementation of the tokenize module with an implementation
that reuses the real C tokenizer via a private extension module. The tokenize module now implements
a compatibility layer that transforms tokens from the C tokenizer into Python tokenize tokens for backward
compatibility.

As the C tokenizer does not emit some tokens that the Python tokenizer provides (such as comments and non-semantic newlines), a new special mode has been added to the C tokenizer mode that currently is only used via
the extension module that exposes it to the Python layer. This new mode forces the C tokenizer to emit these new extra tokens and add the appropriate metadata that is needed to match the old Python implementation.

Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
2023-05-21 01:03:02 +01:00

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ENDMARKER
NAME
NUMBER
STRING
NEWLINE
INDENT
DEDENT
LPAR '('
RPAR ')'
LSQB '['
RSQB ']'
COLON ':'
COMMA ','
SEMI ';'
PLUS '+'
MINUS '-'
STAR '*'
SLASH '/'
VBAR '|'
AMPER '&'
LESS '<'
GREATER '>'
EQUAL '='
DOT '.'
PERCENT '%'
LBRACE '{'
RBRACE '}'
EQEQUAL '=='
NOTEQUAL '!='
LESSEQUAL '<='
GREATEREQUAL '>='
TILDE '~'
CIRCUMFLEX '^'
LEFTSHIFT '<<'
RIGHTSHIFT '>>'
DOUBLESTAR '**'
PLUSEQUAL '+='
MINEQUAL '-='
STAREQUAL '*='
SLASHEQUAL '/='
PERCENTEQUAL '%='
AMPEREQUAL '&='
VBAREQUAL '|='
CIRCUMFLEXEQUAL '^='
LEFTSHIFTEQUAL '<<='
RIGHTSHIFTEQUAL '>>='
DOUBLESTAREQUAL '**='
DOUBLESLASH '//'
DOUBLESLASHEQUAL '//='
AT '@'
ATEQUAL '@='
RARROW '->'
ELLIPSIS '...'
COLONEQUAL ':='
EXCLAMATION '!'
OP
AWAIT
ASYNC
TYPE_IGNORE
TYPE_COMMENT
SOFT_KEYWORD
FSTRING_START
FSTRING_MIDDLE
FSTRING_END
COMMENT
NL
ERRORTOKEN
# These aren't used by the C tokenizer but are needed for tokenize.py
ENCODING