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map cells to arg slots at code creation time (closes #12399)

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This removes nested loops in PyEval_EvalCodeEx.
This commit is contained in:
Benjamin Peterson 2011-06-25 22:54:45 -05:00
parent 935fa016f4
commit 9003760991
4 changed files with 89 additions and 79 deletions
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6
Include/code.h
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@ -22,6 +22,7 @@ typedef struct {
PyObject *co_freevars; /* tuple of strings (free variable names) */
PyObject *co_cellvars; /* tuple of strings (cell variable names) */
/* The rest doesn't count for hash or comparisons */
unsigned char *co_cell2arg; /* Maps cell vars which are arguments. */
PyObject *co_filename; /* unicode (where it was loaded from) */
PyObject *co_name; /* unicode (name, for reference) */
int co_firstlineno; /* first source line number */
@ -57,6 +58,11 @@ typedef struct {
#define CO_FUTURE_BARRY_AS_BDFL 0x40000
/* This value is found in the co_cell2arg array when the associated cell
variable does not correspond to an argument. The maximum number of
arguments is 255 (indexed up to 254), so 255 work as a special flag.*/
#define CO_CELL_NOT_AN_ARG 255
/* This should be defined if a future statement modifies the syntax.
For example, when a keyword is added.
*/