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

#include "object.h"

/* Tokenizer interface */

#include "token.h" /* For token types */

#define MAXINDENT 100 /* Max indentation level */
#define MAXLEVEL 200 /* Max parentheses level */

enum decoding_state {
 STATE_INIT,
 STATE_RAW,
 STATE_NORMAL /* have a codec associated with input */
};

/* Tokenizer state */
struct tok_state {
 /* Input state; buf <= cur <= inp <= end */
 /* NB an entire line is held in the buffer */
 char *buf; /* Input buffer, or NULL; malloc'ed if fp != NULL */
 char *cur; /* Next character in buffer */
 char *inp; /* End of data in buffer */
 char *end; /* End of input buffer if buf != NULL */
 char *start; /* Start of current token if not NULL */
 int done; /* E_OK normally, E_EOF at EOF, otherwise error code */
 /* NB If done != E_OK, cur must be == inp!!! */
 FILE *fp; /* Rest of input; NULL if tokenizing a string */
 int tabsize; /* Tab spacing */
 int indent; /* Current indentation index */
 int indstack[MAXINDENT]; /* Stack of indents */
 int atbol; /* Nonzero if at begin of new line */
 int pendin; /* Pending indents (if > 0) or dedents (if < 0) */
 const char *prompt, *nextprompt; /* For interactive prompting */
 int lineno; /* Current line number */
 int first_lineno; /* First line of a single line or multi line string
 expression (cf. issue 16806) */
 int level; /* () [] {} Parentheses nesting level */
 /* Used to allow free continuations inside them */
 char parenstack[MAXLEVEL];
 int parenlinenostack[MAXLEVEL];
 PyObject *filename;
 /* Stuff for checking on different tab sizes */
 int altindstack[MAXINDENT]; /* Stack of alternate indents */
 /* Stuff for PEP 0263 */
 enum decoding_state decoding_state;
 int decoding_erred; /* whether erred in decoding */
 int read_coding_spec; /* whether 'coding:...' has been read */
 char *encoding; /* Source encoding. */
 int cont_line; /* whether we are in a continuation line. */
 const char* line_start; /* pointer to start of current line */
 const char* multi_line_start; /* pointer to start of first line of
 a single line or multi line string
 expression (cf. issue 16806) */
 PyObject *decoding_readline; /* open(...).readline */
 PyObject *decoding_buffer;
 const char* enc; /* Encoding for the current str. */
 const char* str;
 const char* input; /* Tokenizer's newline translated copy of the string. */

 int type_comments; /* Whether to look for type comments */

 /* async/await related fields (still needed depending on feature_version) */
 int async_hacks; /* =1 if async/await aren't always keywords */
 int async_def; /* =1 if tokens are inside an 'async def' body. */
 int async_def_indent; /* Indentation level of the outermost 'async def'. */
 int async_def_nl; /* =1 if the outermost 'async def' had at least one
 NEWLINE token after it. */
};

extern struct tok_state *PyTokenizer_FromString(const char *, int);
extern struct tok_state *PyTokenizer_FromUTF8(const char *, int);
extern struct tok_state *PyTokenizer_FromFile(FILE *, const char*,
 const char *, const char *);
extern void PyTokenizer_Free(struct tok_state *);
extern int PyTokenizer_Get(struct tok_state *, char **, char **);

#define tok_dump _Py_tok_dump

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