Parser/tokenizer.h

   1 #ifndef Py_TOKENIZER_H
   2 #define Py_TOKENIZER_H
   3 #ifdef __cplusplus
   4 extern "C" {
   5 #endif
   6
   7 #include "object.h"
   8
   9 /* Tokenizer interface */
  10
  11 #include "token.h"      /* For token types */
  12
  13 #define MAXINDENT 100   /* Max indentation level */
  14
  15 /* Tokenizer state */
  16 struct tok_state {
  17         /* Input state; buf <= cur <= inp <= end */
  18         /* NB an entire line is held in the buffer */
  19         char *buf;      /* Input buffer, or NULL; malloc'ed if fp != NULL */
  20         char *cur;      /* Next character in buffer */
  21         char *inp;      /* End of data in buffer */
  22         char *end;      /* End of input buffer if buf != NULL */
  23         char *start;    /* Start of current token if not NULL */
  24         int done;       /* E_OK normally, E_EOF at EOF, otherwise error code */
  25         /* NB If done != E_OK, cur must be == inp!!! */
  26         FILE *fp;       /* Rest of input; NULL if tokenizing a string */
  27         int tabsize;    /* Tab spacing */
  28         int indent;     /* Current indentation index */
  29         int indstack[MAXINDENT];        /* Stack of indents */
  30         int atbol;      /* Nonzero if at begin of new line */
  31         int pendin;     /* Pending indents (if > 0) or dedents (if < 0) */
  32         char *prompt, *nextprompt;      /* For interactive prompting */
  33         int lineno;     /* Current line number */
  34         int level;      /* () [] {} Parentheses nesting level */
  35                         /* Used to allow free continuations inside them */
  36         /* Stuff for checking on different tab sizes */
  37         const char *filename;   /* For error messages */
  38         int altwarning; /* Issue warning if alternate tabs don't match */
  39         int alterror;   /* Issue error if alternate tabs don't match */
  40         int alttabsize; /* Alternate tab spacing */
  41         int altindstack[MAXINDENT];     /* Stack of alternate indents */
  42         /* Stuff for PEP 0263 */
  43         int decoding_state;     /* -1:decoding, 0:init, 1:raw */
  44         int decoding_erred;     /* whether erred in decoding  */
  45         int read_coding_spec;   /* whether 'coding:...' has been read  */
  46         char *encoding;
  47         int cont_line;          /* whether we are in a continuation line. */
  48         const char* line_start; /* pointer to start of current line */
  49 #ifndef PGEN
  50         PyObject *decoding_readline; /* codecs.open(...).readline */
  51         PyObject *decoding_buffer;
  52 #endif
  53         const char* enc;
  54         const char* str;
  55         const char* input; /* Tokenizer's newline translated copy of the string. */
  56 };
  57
  58 extern struct tok_state *PyTokenizer_FromString(const char *, int);
  59 extern struct tok_state *PyTokenizer_FromFile(FILE *, char *, char *);
  60 extern void PyTokenizer_Free(struct tok_state *);
  61 extern int PyTokenizer_Get(struct tok_state *, char **, char **);
  62 #if defined(PGEN) || defined(Py_USING_UNICODE)
  63 extern char * PyTokenizer_RestoreEncoding(struct tok_state* tok,
  64                                           int len, int *offset);
  65 #endif
  66
  67 #ifdef __cplusplus
  68 }
  69 #endif
  70 #endif /* !Py_TOKENIZER_H */