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v0.5.1
https://github.com/python/cpython
Revision bca701403253379409dece03053dbd739c0bd059 authored by Lysandros Nikolaou on 26 October 2020, 22:42:04 UTC, committed by GitHub on 26 October 2020, 22:42:04 UTC
* Implement running the parser a second time for the errors messages

The first parser run is only responsible for detecting whether
there is a `SyntaxError` or not. If there isn't the AST gets returned.
Otherwise, the parser is run a second time with all the `invalid_*`
rules enabled so that all the customized error messages get produced.
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Tip revision: bca701403253379409dece03053dbd739c0bd059 authored by Lysandros Nikolaou on 26 October 2020, 22:42:04 UTC
bpo-42123: Run the parser two times and only enable invalid rules on the second run (GH-22111)
Tip revision: bca7014
rotatingtree.h
/* "Rotating trees" (Armin Rigo)
 *
 * Google "splay trees" for the general idea.
 *
 * It's a dict-like data structure that works best when accesses are not
 * random, but follow a strong pattern.  The one implemented here is for
 * access patterns where the same small set of keys is looked up over
 * and over again, and this set of keys evolves slowly over time.
 */

#include <stdlib.h>

#define EMPTY_ROTATING_TREE       ((rotating_node_t *)NULL)

typedef struct rotating_node_s rotating_node_t;
typedef int (*rotating_tree_enum_fn) (rotating_node_t *node, void *arg);

struct rotating_node_s {
    void *key;
    rotating_node_t *left;
    rotating_node_t *right;
};

void RotatingTree_Add(rotating_node_t **root, rotating_node_t *node);
rotating_node_t* RotatingTree_Get(rotating_node_t **root, void *key);
int RotatingTree_Enum(rotating_node_t *root, rotating_tree_enum_fn enumfn,
                      void *arg);
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