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bpo-42246: Partial implementation of PEP 626. (GH-23113)

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* Implement new line number table format, as defined in PEP 626.
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Mark Shannon 2020-11-12 09:43:29 +00:00 • committed by GitHub
parent cda99b4022
commit 877df851c3
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GPG key ID: 4AEE18F83AFDEB23
19 changed files with 5364 additions and 5000 deletions
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28
Include/cpython/code.h
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@ -38,7 +38,7 @@ struct PyCodeObject {
Py_ssize_t *co_cell2arg; /* Maps cell vars which are arguments. */
PyObject *co_filename; /* unicode (where it was loaded from) */
PyObject *co_name; /* unicode (name, for reference) */
PyObject *co_lnotab; /* string (encoding addr<->lineno mapping) See
PyObject *co_linetable; /* string (encoding addr<->lineno mapping) See
Objects/lnotab_notes.txt for details. */
void *co_zombieframe; /* for optimization only (see frameobject.c) */
PyObject *co_weakreflist; /* to support weakrefs to code objects */
@ -135,16 +135,18 @@ PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno);
PyAPI_FUNC(int) PyCode_Addr2Line(PyCodeObject *, int);
/* for internal use only */
typedef struct _addr_pair {
int ap_lower;
int ap_upper;
} PyAddrPair;
typedef struct _line_offsets {
int ar_start;
int ar_end;
int ar_line;
int ar_computed_line;
char *lo_next;
} PyCodeAddressRange;
/* Update *bounds to describe the first and one-past-the-last instructions in the
same line as lasti. Return the number of that line.
*/
PyAPI_FUNC(int) _PyCode_CheckLineNumber(PyCodeObject* co,
int lasti, PyAddrPair *bounds);
PyAPI_FUNC(int) _PyCode_CheckLineNumber(int lasti, PyCodeAddressRange *bounds);
/* Create a comparable key used to compare constants taking in account the
* object type. It is used to make sure types are not coerced (e.g., float and
@ -163,3 +165,15 @@ PyAPI_FUNC(int) _PyCode_GetExtra(PyObject *code, Py_ssize_t index,
void **extra);
PyAPI_FUNC(int) _PyCode_SetExtra(PyObject *code, Py_ssize_t index,
void *extra);
/** API for initializing the line number table. */
int _PyCode_InitAddressRange(PyCodeObject* co, PyCodeAddressRange *bounds);
/** Out of process API for initializing the line number table. */
void PyLineTable_InitAddressRange(char *linetable, int firstlineno, PyCodeAddressRange *range);
/** API for traversing the line number table. */
int PyLineTable_NextAddressRange(PyCodeAddressRange *range);
int PyLineTable_PreviousAddressRange(PyCodeAddressRange *range);