• Guido van Rossum's avatar
    Implement PEP 238 in its (almost) full glory. · 4668b000
    Guido van Rossum yazdı
    This introduces:
    
    - A new operator // that means floor division (the kind of division
      where 1/2 is 0).
    
    - The "future division" statement ("from __future__ import division)
      which changes the meaning of the / operator to implement "true
      division" (where 1/2 is 0.5).
    
    - New overloadable operators __truediv__ and __floordiv__.
    
    - New slots in the PyNumberMethods struct for true and floor division,
      new abstract APIs for them, new opcodes, and so on.
    
    I emphasize that without the future division statement, the semantics
    of / will remain unchanged until Python 3.0.
    
    Not yet implemented are warnings (default off) when / is used with int
    or long arguments.
    
    This has been on display since 7/31 as SF patch #443474.
    
    Flames to /dev/null.
    4668b000
token.h 1.67 KB

/* Token types */

#ifndef Py_TOKEN_H
#define Py_TOKEN_H
#ifdef __cplusplus
extern "C" {
#endif

#define ENDMARKER	0
#define NAME		1
#define NUMBER		2
#define STRING		3
#define NEWLINE		4
#define INDENT		5
#define DEDENT		6
#define LPAR		7
#define RPAR		8
#define LSQB		9
#define RSQB		10
#define COLON		11
#define COMMA		12
#define SEMI		13
#define PLUS		14
#define MINUS		15
#define STAR		16
#define SLASH		17
#define VBAR		18
#define AMPER		19
#define LESS		20
#define GREATER		21
#define EQUAL		22
#define DOT		23
#define PERCENT		24
#define BACKQUOTE	25
#define LBRACE		26
#define RBRACE		27
#define EQEQUAL		28
#define NOTEQUAL	29
#define LESSEQUAL	30
#define GREATEREQUAL	31
#define TILDE		32
#define CIRCUMFLEX	33
#define LEFTSHIFT	34
#define RIGHTSHIFT	35
#define DOUBLESTAR	36
#define PLUSEQUAL	37
#define MINEQUAL	38
#define STAREQUAL	39
#define SLASHEQUAL	40
#define PERCENTEQUAL	41
#define AMPEREQUAL	42
#define VBAREQUAL	43
#define CIRCUMFLEXEQUAL	44
#define LEFTSHIFTEQUAL	45
#define RIGHTSHIFTEQUAL	46
#define DOUBLESTAREQUAL	47
#define DOUBLESLASH	48
#define DOUBLESLASHEQUAL 49
/* Don't forget to update the table _PyParser_TokenNames in tokenizer.c! */
#define OP		50
#define ERRORTOKEN	51
#define N_TOKENS	52

/* Special definitions for cooperation with parser */

#define NT_OFFSET		256

#define ISTERMINAL(x)		((x) < NT_OFFSET)
#define ISNONTERMINAL(x)	((x) >= NT_OFFSET)
#define ISEOF(x)		((x) == ENDMARKER)


extern DL_IMPORT(char *) _PyParser_TokenNames[]; /* Token names */
extern DL_IMPORT(int) PyToken_OneChar(int);
extern DL_IMPORT(int) PyToken_TwoChars(int, int);
extern DL_IMPORT(int) PyToken_ThreeChars(int, int, int);

#ifdef __cplusplus
}
#endif
#endif /* !Py_TOKEN_H */