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495da29225
This adds a `feature_version` flag to `ast.parse()` (documented) and `compile()` (hidden) that allow tweaking the parser to support older versions of the grammar. In particular if `feature_version` is 5 or 6, the hacks for the `async` and `await` keyword from PEP 492 are reinstated. (For 7 or higher, these are unconditionally treated as keywords, but they are still special tokens rather than `NAME` tokens that the parser driver recognizes.) https://bugs.python.org/issue35975
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/* Parser-tokenizer link interface */
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#ifndef Py_LIMITED_API
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#ifndef Py_PARSETOK_H
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#define Py_PARSETOK_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "grammar.h" /* grammar */
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#include "node.h" /* node */
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typedef struct {
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int error;
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PyObject *filename;
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int lineno;
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int offset;
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char *text; /* UTF-8-encoded string */
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int token;
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int expected;
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} perrdetail;
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#if 0
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#define PyPARSE_YIELD_IS_KEYWORD 0x0001
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#endif
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#define PyPARSE_DONT_IMPLY_DEDENT 0x0002
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#if 0
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#define PyPARSE_WITH_IS_KEYWORD 0x0003
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#define PyPARSE_PRINT_IS_FUNCTION 0x0004
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#define PyPARSE_UNICODE_LITERALS 0x0008
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#endif
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#define PyPARSE_IGNORE_COOKIE 0x0010
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#define PyPARSE_BARRY_AS_BDFL 0x0020
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#define PyPARSE_TYPE_COMMENTS 0x0040
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#define PyPARSE_ASYNC_HACKS 0x0080
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PyAPI_FUNC(node *) PyParser_ParseString(const char *, grammar *, int,
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perrdetail *);
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PyAPI_FUNC(node *) PyParser_ParseFile (FILE *, const char *, grammar *, int,
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const char *, const char *,
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perrdetail *);
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PyAPI_FUNC(node *) PyParser_ParseStringFlags(const char *, grammar *, int,
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perrdetail *, int);
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PyAPI_FUNC(node *) PyParser_ParseFileFlags(
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FILE *fp,
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const char *filename, /* decoded from the filesystem encoding */
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const char *enc,
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grammar *g,
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int start,
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const char *ps1,
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const char *ps2,
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perrdetail *err_ret,
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int flags);
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PyAPI_FUNC(node *) PyParser_ParseFileFlagsEx(
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FILE *fp,
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const char *filename, /* decoded from the filesystem encoding */
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const char *enc,
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grammar *g,
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int start,
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const char *ps1,
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const char *ps2,
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perrdetail *err_ret,
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int *flags);
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PyAPI_FUNC(node *) PyParser_ParseFileObject(
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FILE *fp,
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PyObject *filename,
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const char *enc,
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grammar *g,
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int start,
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const char *ps1,
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const char *ps2,
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perrdetail *err_ret,
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int *flags);
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PyAPI_FUNC(node *) PyParser_ParseStringFlagsFilename(
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const char *s,
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const char *filename, /* decoded from the filesystem encoding */
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grammar *g,
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int start,
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perrdetail *err_ret,
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int flags);
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PyAPI_FUNC(node *) PyParser_ParseStringFlagsFilenameEx(
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const char *s,
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const char *filename, /* decoded from the filesystem encoding */
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grammar *g,
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int start,
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perrdetail *err_ret,
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int *flags);
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PyAPI_FUNC(node *) PyParser_ParseStringObject(
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const char *s,
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PyObject *filename,
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grammar *g,
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int start,
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perrdetail *err_ret,
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int *flags);
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/* Note that the following functions are defined in pythonrun.c,
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not in parsetok.c */
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PyAPI_FUNC(void) PyParser_SetError(perrdetail *);
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PyAPI_FUNC(void) PyParser_ClearError(perrdetail *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_PARSETOK_H */
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#endif /* !Py_LIMITED_API */
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