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/* Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0 */
/* For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt */
#ifndef _COVERAGE_DATASTACK_H
#define _COVERAGE_DATASTACK_H
#include "util.h"
#include "stats.h"
/* An entry on the data stack. For each call frame, we need to record all
* the information needed for CTracer_handle_line to operate as quickly as
* possible.
*/
typedef struct DataStackEntry {
/* The current file_data dictionary. Owned. */
PyObject * file_data;
/* The disposition object for this frame. A borrowed instance of CFileDisposition. */
PyObject * disposition;
/* The FileTracer handling this frame, or None if it's Python. Borrowed. */
PyObject * file_tracer;
/* The line number of the last line recorded, for tracing arcs.
-1 means there was no previous line, as when entering a code object.
*/
int last_line;
BOOL started_context;
} DataStackEntry;
/* A data stack is a dynamically allocated vector of DataStackEntry's. */
typedef struct DataStack {
int depth; /* The index of the last-used entry in stack. */
int alloc; /* number of entries allocated at stack. */
/* The file data at each level, or NULL if not recording. */
DataStackEntry * stack;
} DataStack;
int DataStack_init(Stats * pstats, DataStack *pdata_stack);
void DataStack_dealloc(Stats * pstats, DataStack *pdata_stack);
int DataStack_grow(Stats * pstats, DataStack *pdata_stack);
#endif /* _COVERAGE_DATASTACK_H */
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