cpython/Parser/string_parser.h at 3.11 · python/cpython · GitHub

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#ifndef STRINGS_H

#define STRINGS_H

#include <Python.h>

#include <pycore_ast.h>

#include "pegen.h"

#define EXPRLIST_N_CACHED 64

typedef struct {

/* Incrementally build an array of expr_ty, so be used in an

asdl_seq. Cache some small but reasonably sized number of

expr_ty's, and then after that start dynamically allocating,

doubling the number allocated each time. Note that the f-string

f'{0}a{1}' contains 3 expr_ty's: 2 FormattedValue's, and one

Constant for the literal 'a'. So you add expr_ty's about twice as

fast as you add expressions in an f-string. */

Py_ssize_t allocated; /* Number we've allocated. */

Py_ssize_t size; /* Number we've used. */

expr_ty *p; /* Pointer to the memory we're actually

using. Will point to 'data' until we

start dynamically allocating. */

expr_ty data[EXPRLIST_N_CACHED];

} ExprList;

/* The FstringParser is designed to add a mix of strings and

f-strings, and concat them together as needed. Ultimately, it

generates an expr_ty. */

typedef struct {

PyObject *last_str;

ExprList expr_list;

int fmode;

} FstringParser;

void _PyPegen_FstringParser_Init(FstringParser *);

int _PyPegen_parsestr(Parser *, int *, int *, PyObject **,

const char **, Py_ssize_t *, Token *);

int _PyPegen_FstringParser_ConcatFstring(Parser *, FstringParser *, const char **,

const char *, int, int, Token *, Token *,

Token *);

int _PyPegen_FstringParser_ConcatAndDel(FstringParser *, PyObject *);

expr_ty _PyPegen_FstringParser_Finish(Parser *, FstringParser *, Token *, Token *);

void _PyPegen_FstringParser_Dealloc(FstringParser *);

#endif

cpython/Parser/string_parser.h at 3.11 · python/cpython · GitHub

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cpython/Parser/string_parser.h at 3.11 · python/cpython · GitHub

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