/home/mdboom/Work/builds/cpython/Parser/tokenizer.h
Line | Count | Source |
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 "pycore_token.h" /* For token types */ |
12 | |
13 | #define MAXINDENT 100 /* Max indentation level */ |
14 | #define MAXLEVEL 200 /* Max parentheses level */ |
15 | |
16 | enum decoding_state { |
17 | STATE_INIT, |
18 | STATE_SEEK_CODING, |
19 | STATE_NORMAL |
20 | }; |
21 | |
22 | enum interactive_underflow_t { |
23 | /* Normal mode of operation: return a new token when asked in interactie mode */ |
24 | IUNDERFLOW_NORMAL, |
25 | /* Forcefully return ENDMARKER when asked for a new token in interactive mode. This |
26 | * can be used to prevent the tokenizer to prompt the user for new tokens */ |
27 | IUNDERFLOW_STOP, |
28 | }; |
29 | |
30 | /* Tokenizer state */ |
31 | struct tok_state { |
32 | /* Input state; buf <= cur <= inp <= end */ |
33 | /* NB an entire line is held in the buffer */ |
34 | char *buf; /* Input buffer, or NULL; malloc'ed if fp != NULL */ |
35 | char *cur; /* Next character in buffer */ |
36 | char *inp; /* End of data in buffer */ |
37 | int fp_interactive; /* If the file descriptor is interactive */ |
38 | char *interactive_src_start; /* The start of the source parsed so far in interactive mode */ |
39 | char *interactive_src_end; /* The end of the source parsed so far in interactive mode */ |
40 | const char *end; /* End of input buffer if buf != NULL */ |
41 | const char *start; /* Start of current token if not NULL */ |
42 | int done; /* E_OK normally, E_EOF at EOF, otherwise error code */ |
43 | /* NB If done != E_OK, cur must be == inp!!! */ |
44 | FILE *fp; /* Rest of input; NULL if tokenizing a string */ |
45 | int tabsize; /* Tab spacing */ |
46 | int indent; /* Current indentation index */ |
47 | int indstack[MAXINDENT]; /* Stack of indents */ |
48 | int atbol; /* Nonzero if at begin of new line */ |
49 | int pendin; /* Pending indents (if > 0) or dedents (if < 0) */ |
50 | const char *prompt, *nextprompt; /* For interactive prompting */ |
51 | int lineno; /* Current line number */ |
52 | int first_lineno; /* First line of a single line or multi line string |
53 | expression (cf. issue 16806) */ |
54 | int level; /* () [] {} Parentheses nesting level */ |
55 | /* Used to allow free continuations inside them */ |
56 | char parenstack[MAXLEVEL]; |
57 | int parenlinenostack[MAXLEVEL]; |
58 | int parencolstack[MAXLEVEL]; |
59 | PyObject *filename; |
60 | /* Stuff for checking on different tab sizes */ |
61 | int altindstack[MAXINDENT]; /* Stack of alternate indents */ |
62 | /* Stuff for PEP 0263 */ |
63 | enum decoding_state decoding_state; |
64 | int decoding_erred; /* whether erred in decoding */ |
65 | char *encoding; /* Source encoding. */ |
66 | int cont_line; /* whether we are in a continuation line. */ |
67 | const char* line_start; /* pointer to start of current line */ |
68 | const char* multi_line_start; /* pointer to start of first line of |
69 | a single line or multi line string |
70 | expression (cf. issue 16806) */ |
71 | PyObject *decoding_readline; /* open(...).readline */ |
72 | PyObject *decoding_buffer; |
73 | const char* enc; /* Encoding for the current str. */ |
74 | char* str; /* Source string being tokenized (if tokenizing from a string)*/ |
75 | char* input; /* Tokenizer's newline translated copy of the string. */ |
76 | |
77 | int type_comments; /* Whether to look for type comments */ |
78 | |
79 | /* async/await related fields (still needed depending on feature_version) */ |
80 | int async_hacks; /* =1 if async/await aren't always keywords */ |
81 | int async_def; /* =1 if tokens are inside an 'async def' body. */ |
82 | int async_def_indent; /* Indentation level of the outermost 'async def'. */ |
83 | int async_def_nl; /* =1 if the outermost 'async def' had at least one |
84 | NEWLINE token after it. */ |
85 | /* How to proceed when asked for a new token in interactive mode */ |
86 | enum interactive_underflow_t interactive_underflow; |
87 | #ifdef Py_DEBUG |
88 | int debug; |
89 | #endif |
90 | }; |
91 | |
92 | extern struct tok_state *_PyTokenizer_FromString(const char *, int); |
93 | extern struct tok_state *_PyTokenizer_FromUTF8(const char *, int); |
94 | extern struct tok_state *_PyTokenizer_FromFile(FILE *, const char*, |
95 | const char *, const char *); |
96 | extern void _PyTokenizer_Free(struct tok_state *); |
97 | extern int _PyTokenizer_Get(struct tok_state *, const char **, const char **); |
98 | |
99 | #define tok_dump _Py_tok_dump |
100 | |
101 | #ifdef __cplusplus |
102 | } |
103 | #endif |
104 | #endif /* !Py_TOKENIZER_H */ |