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5115a16831
* Replace deprecated Py_DebugFlag with PyConfig.parser_debug in the parser. * Add Parser.debug member. * Add tok_state.debug member. * Py_FrozenMain(): Replace Py_VerboseFlag with PyConfig.verbose.
345 lines
12 KiB
C
345 lines
12 KiB
C
#ifndef PEGEN_H
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#define PEGEN_H
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#define PY_SSIZE_T_CLEAN
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#include <Python.h>
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#include <pycore_ast.h>
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#include <pycore_token.h>
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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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#define PyPARSE_ALLOW_INCOMPLETE_INPUT 0x0100
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#define CURRENT_POS (-5)
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typedef struct _memo {
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int type;
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void *node;
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int mark;
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struct _memo *next;
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} Memo;
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typedef struct {
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int type;
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PyObject *bytes;
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int level;
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int lineno, col_offset, end_lineno, end_col_offset;
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Memo *memo;
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} Token;
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typedef struct {
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char *str;
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int type;
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} KeywordToken;
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typedef struct {
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struct {
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int lineno;
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char *comment; // The " <tag>" in "# type: ignore <tag>"
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} *items;
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size_t size;
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size_t num_items;
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} growable_comment_array;
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typedef struct {
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struct tok_state *tok;
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Token **tokens;
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int mark;
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int fill, size;
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PyArena *arena;
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KeywordToken **keywords;
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char **soft_keywords;
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int n_keyword_lists;
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int start_rule;
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int *errcode;
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int parsing_started;
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PyObject* normalize;
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int starting_lineno;
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int starting_col_offset;
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int error_indicator;
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int flags;
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int feature_version;
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growable_comment_array type_ignore_comments;
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Token *known_err_token;
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int level;
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int call_invalid_rules;
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int debug;
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} Parser;
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typedef struct {
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cmpop_ty cmpop;
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expr_ty expr;
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} CmpopExprPair;
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typedef struct {
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expr_ty key;
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expr_ty value;
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} KeyValuePair;
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typedef struct {
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expr_ty key;
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pattern_ty pattern;
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} KeyPatternPair;
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typedef struct {
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arg_ty arg;
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expr_ty value;
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} NameDefaultPair;
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typedef struct {
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asdl_arg_seq *plain_names;
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asdl_seq *names_with_defaults; // asdl_seq* of NameDefaultsPair's
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} SlashWithDefault;
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typedef struct {
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arg_ty vararg;
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asdl_seq *kwonlyargs; // asdl_seq* of NameDefaultsPair's
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arg_ty kwarg;
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} StarEtc;
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typedef struct { operator_ty kind; } AugOperator;
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typedef struct {
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void *element;
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int is_keyword;
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} KeywordOrStarred;
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// Internal parser functions
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#if defined(Py_DEBUG)
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void _PyPegen_clear_memo_statistics(void);
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PyObject *_PyPegen_get_memo_statistics(void);
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#endif
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int _PyPegen_insert_memo(Parser *p, int mark, int type, void *node);
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int _PyPegen_update_memo(Parser *p, int mark, int type, void *node);
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int _PyPegen_is_memoized(Parser *p, int type, void *pres);
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int _PyPegen_lookahead_with_name(int, expr_ty (func)(Parser *), Parser *);
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int _PyPegen_lookahead_with_int(int, Token *(func)(Parser *, int), Parser *, int);
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int _PyPegen_lookahead_with_string(int , expr_ty (func)(Parser *, const char*), Parser *, const char*);
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int _PyPegen_lookahead(int, void *(func)(Parser *), Parser *);
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Token *_PyPegen_expect_token(Parser *p, int type);
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void* _PyPegen_expect_forced_result(Parser *p, void* result, const char* expected);
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Token *_PyPegen_expect_forced_token(Parser *p, int type, const char* expected);
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expr_ty _PyPegen_expect_soft_keyword(Parser *p, const char *keyword);
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expr_ty _PyPegen_soft_keyword_token(Parser *p);
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Token *_PyPegen_get_last_nonnwhitespace_token(Parser *);
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int _PyPegen_fill_token(Parser *p);
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expr_ty _PyPegen_name_token(Parser *p);
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expr_ty _PyPegen_number_token(Parser *p);
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void *_PyPegen_string_token(Parser *p);
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Py_ssize_t _PyPegen_byte_offset_to_character_offset(PyObject *line, Py_ssize_t col_offset);
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// Error handling functions and APIs
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typedef enum {
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STAR_TARGETS,
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DEL_TARGETS,
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FOR_TARGETS
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} TARGETS_TYPE;
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int _Pypegen_raise_decode_error(Parser *p);
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void _PyPegen_raise_tokenizer_init_error(PyObject *filename);
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int _Pypegen_tokenizer_error(Parser *p);
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void *_PyPegen_raise_error(Parser *p, PyObject *errtype, const char *errmsg, ...);
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void *_PyPegen_raise_error_known_location(Parser *p, PyObject *errtype,
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Py_ssize_t lineno, Py_ssize_t col_offset,
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Py_ssize_t end_lineno, Py_ssize_t end_col_offset,
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const char *errmsg, va_list va);
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void _Pypegen_set_syntax_error(Parser* p, Token* last_token);
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Py_LOCAL_INLINE(void *)
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RAISE_ERROR_KNOWN_LOCATION(Parser *p, PyObject *errtype,
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Py_ssize_t lineno, Py_ssize_t col_offset,
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Py_ssize_t end_lineno, Py_ssize_t end_col_offset,
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const char *errmsg, ...)
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{
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va_list va;
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va_start(va, errmsg);
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Py_ssize_t _col_offset = (col_offset == CURRENT_POS ? CURRENT_POS : col_offset + 1);
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Py_ssize_t _end_col_offset = (end_col_offset == CURRENT_POS ? CURRENT_POS : end_col_offset + 1);
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_PyPegen_raise_error_known_location(p, errtype, lineno, _col_offset, end_lineno, _end_col_offset, errmsg, va);
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va_end(va);
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return NULL;
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}
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#define RAISE_SYNTAX_ERROR(msg, ...) _PyPegen_raise_error(p, PyExc_SyntaxError, msg, ##__VA_ARGS__)
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#define RAISE_INDENTATION_ERROR(msg, ...) _PyPegen_raise_error(p, PyExc_IndentationError, msg, ##__VA_ARGS__)
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#define RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, msg, ...) \
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RAISE_ERROR_KNOWN_LOCATION(p, PyExc_SyntaxError, (a)->lineno, (a)->col_offset, (b)->end_lineno, (b)->end_col_offset, msg, ##__VA_ARGS__)
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#define RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, msg, ...) \
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RAISE_ERROR_KNOWN_LOCATION(p, PyExc_SyntaxError, (a)->lineno, (a)->col_offset, (a)->end_lineno, (a)->end_col_offset, msg, ##__VA_ARGS__)
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#define RAISE_SYNTAX_ERROR_STARTING_FROM(a, msg, ...) \
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RAISE_ERROR_KNOWN_LOCATION(p, PyExc_SyntaxError, (a)->lineno, (a)->col_offset, CURRENT_POS, CURRENT_POS, msg, ##__VA_ARGS__)
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#define RAISE_SYNTAX_ERROR_INVALID_TARGET(type, e) _RAISE_SYNTAX_ERROR_INVALID_TARGET(p, type, e)
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Py_LOCAL_INLINE(void *)
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CHECK_CALL(Parser *p, void *result)
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{
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if (result == NULL) {
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assert(PyErr_Occurred());
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p->error_indicator = 1;
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}
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return result;
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}
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/* This is needed for helper functions that are allowed to
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return NULL without an error. Example: _PyPegen_seq_extract_starred_exprs */
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Py_LOCAL_INLINE(void *)
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CHECK_CALL_NULL_ALLOWED(Parser *p, void *result)
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{
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if (result == NULL && PyErr_Occurred()) {
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p->error_indicator = 1;
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}
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return result;
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}
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#define CHECK(type, result) ((type) CHECK_CALL(p, result))
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#define CHECK_NULL_ALLOWED(type, result) ((type) CHECK_CALL_NULL_ALLOWED(p, result))
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expr_ty _PyPegen_get_invalid_target(expr_ty e, TARGETS_TYPE targets_type);
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const char *_PyPegen_get_expr_name(expr_ty);
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Py_LOCAL_INLINE(void *)
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_RAISE_SYNTAX_ERROR_INVALID_TARGET(Parser *p, TARGETS_TYPE type, void *e)
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{
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expr_ty invalid_target = CHECK_NULL_ALLOWED(expr_ty, _PyPegen_get_invalid_target(e, type));
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if (invalid_target != NULL) {
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const char *msg;
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if (type == STAR_TARGETS || type == FOR_TARGETS) {
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msg = "cannot assign to %s";
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}
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else {
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msg = "cannot delete %s";
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}
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return RAISE_SYNTAX_ERROR_KNOWN_LOCATION(
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invalid_target,
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msg,
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_PyPegen_get_expr_name(invalid_target)
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);
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return RAISE_SYNTAX_ERROR_KNOWN_LOCATION(invalid_target, "invalid syntax");
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}
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return NULL;
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}
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// Action utility functions
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void *_PyPegen_dummy_name(Parser *p, ...);
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void * _PyPegen_seq_last_item(asdl_seq *seq);
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#define PyPegen_last_item(seq, type) ((type)_PyPegen_seq_last_item((asdl_seq*)seq))
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void * _PyPegen_seq_first_item(asdl_seq *seq);
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#define PyPegen_first_item(seq, type) ((type)_PyPegen_seq_first_item((asdl_seq*)seq))
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#define UNUSED(expr) do { (void)(expr); } while (0)
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#define EXTRA_EXPR(head, tail) head->lineno, (head)->col_offset, (tail)->end_lineno, (tail)->end_col_offset, p->arena
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#define EXTRA _start_lineno, _start_col_offset, _end_lineno, _end_col_offset, p->arena
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PyObject *_PyPegen_new_type_comment(Parser *, const char *);
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Py_LOCAL_INLINE(PyObject *)
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NEW_TYPE_COMMENT(Parser *p, Token *tc)
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{
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if (tc == NULL) {
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return NULL;
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}
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const char *bytes = PyBytes_AsString(tc->bytes);
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if (bytes == NULL) {
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goto error;
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}
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PyObject *tco = _PyPegen_new_type_comment(p, bytes);
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if (tco == NULL) {
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goto error;
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}
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return tco;
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error:
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p->error_indicator = 1; // Inline CHECK_CALL
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return NULL;
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}
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Py_LOCAL_INLINE(void *)
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INVALID_VERSION_CHECK(Parser *p, int version, char *msg, void *node)
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{
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if (node == NULL) {
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p->error_indicator = 1; // Inline CHECK_CALL
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return NULL;
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}
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if (p->feature_version < version) {
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p->error_indicator = 1;
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return RAISE_SYNTAX_ERROR("%s only supported in Python 3.%i and greater",
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msg, version);
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}
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return node;
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}
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#define CHECK_VERSION(type, version, msg, node) ((type) INVALID_VERSION_CHECK(p, version, msg, node))
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arg_ty _PyPegen_add_type_comment_to_arg(Parser *, arg_ty, Token *);
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PyObject *_PyPegen_new_identifier(Parser *, const char *);
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asdl_seq *_PyPegen_singleton_seq(Parser *, void *);
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asdl_seq *_PyPegen_seq_insert_in_front(Parser *, void *, asdl_seq *);
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asdl_seq *_PyPegen_seq_append_to_end(Parser *, asdl_seq *, void *);
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asdl_seq *_PyPegen_seq_flatten(Parser *, asdl_seq *);
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expr_ty _PyPegen_join_names_with_dot(Parser *, expr_ty, expr_ty);
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int _PyPegen_seq_count_dots(asdl_seq *);
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alias_ty _PyPegen_alias_for_star(Parser *, int, int, int, int, PyArena *);
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asdl_identifier_seq *_PyPegen_map_names_to_ids(Parser *, asdl_expr_seq *);
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CmpopExprPair *_PyPegen_cmpop_expr_pair(Parser *, cmpop_ty, expr_ty);
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asdl_int_seq *_PyPegen_get_cmpops(Parser *p, asdl_seq *);
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asdl_expr_seq *_PyPegen_get_exprs(Parser *, asdl_seq *);
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expr_ty _PyPegen_set_expr_context(Parser *, expr_ty, expr_context_ty);
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KeyValuePair *_PyPegen_key_value_pair(Parser *, expr_ty, expr_ty);
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asdl_expr_seq *_PyPegen_get_keys(Parser *, asdl_seq *);
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asdl_expr_seq *_PyPegen_get_values(Parser *, asdl_seq *);
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KeyPatternPair *_PyPegen_key_pattern_pair(Parser *, expr_ty, pattern_ty);
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asdl_expr_seq *_PyPegen_get_pattern_keys(Parser *, asdl_seq *);
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asdl_pattern_seq *_PyPegen_get_patterns(Parser *, asdl_seq *);
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NameDefaultPair *_PyPegen_name_default_pair(Parser *, arg_ty, expr_ty, Token *);
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SlashWithDefault *_PyPegen_slash_with_default(Parser *, asdl_arg_seq *, asdl_seq *);
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StarEtc *_PyPegen_star_etc(Parser *, arg_ty, asdl_seq *, arg_ty);
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arguments_ty _PyPegen_make_arguments(Parser *, asdl_arg_seq *, SlashWithDefault *,
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asdl_arg_seq *, asdl_seq *, StarEtc *);
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arguments_ty _PyPegen_empty_arguments(Parser *);
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AugOperator *_PyPegen_augoperator(Parser*, operator_ty type);
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stmt_ty _PyPegen_function_def_decorators(Parser *, asdl_expr_seq *, stmt_ty);
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stmt_ty _PyPegen_class_def_decorators(Parser *, asdl_expr_seq *, stmt_ty);
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KeywordOrStarred *_PyPegen_keyword_or_starred(Parser *, void *, int);
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asdl_expr_seq *_PyPegen_seq_extract_starred_exprs(Parser *, asdl_seq *);
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asdl_keyword_seq *_PyPegen_seq_delete_starred_exprs(Parser *, asdl_seq *);
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expr_ty _PyPegen_collect_call_seqs(Parser *, asdl_expr_seq *, asdl_seq *,
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int lineno, int col_offset, int end_lineno,
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int end_col_offset, PyArena *arena);
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expr_ty _PyPegen_concatenate_strings(Parser *p, asdl_seq *);
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expr_ty _PyPegen_ensure_imaginary(Parser *p, expr_ty);
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expr_ty _PyPegen_ensure_real(Parser *p, expr_ty);
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asdl_seq *_PyPegen_join_sequences(Parser *, asdl_seq *, asdl_seq *);
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int _PyPegen_check_barry_as_flufl(Parser *, Token *);
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int _PyPegen_check_legacy_stmt(Parser *p, expr_ty t);
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mod_ty _PyPegen_make_module(Parser *, asdl_stmt_seq *);
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void *_PyPegen_arguments_parsing_error(Parser *, expr_ty);
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expr_ty _PyPegen_get_last_comprehension_item(comprehension_ty comprehension);
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void *_PyPegen_nonparen_genexp_in_call(Parser *p, expr_ty args, asdl_comprehension_seq *comprehensions);
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// Parser API
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Parser *_PyPegen_Parser_New(struct tok_state *, int, int, int, int *, PyArena *);
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void _PyPegen_Parser_Free(Parser *);
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mod_ty _PyPegen_run_parser_from_file_pointer(FILE *, int, PyObject *, const char *,
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const char *, const char *, PyCompilerFlags *, int *, PyArena *);
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void *_PyPegen_run_parser(Parser *);
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mod_ty _PyPegen_run_parser_from_string(const char *, int, PyObject *, PyCompilerFlags *, PyArena *);
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asdl_stmt_seq *_PyPegen_interactive_exit(Parser *);
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// Generated function in parse.c - function definition in python.gram
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void *_PyPegen_parse(Parser *);
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#endif
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