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Add API for checking if a pattern in a query is non-local

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This commit is contained in:
Max Brunsfeld 2023-02-15 18:24:07 -08:00
parent 40703f110c
commit 837899e456
5 changed files with 112 additions and 12 deletions
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27
lib/include/tree_sitter/api.h
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@ -750,15 +750,26 @@ const TSQueryPredicateStep *ts_query_predicates_for_pattern(
uint32_t *length
);
bool ts_query_is_pattern_rooted(
const TSQuery *self,
uint32_t pattern_index
);
/*
* Check if the given pattern in the query has a single root node.
*/
bool ts_query_is_pattern_rooted(const TSQuery *self, uint32_t pattern_index);
bool ts_query_is_pattern_guaranteed_at_step(
const TSQuery *self,
uint32_t byte_offset
);
/*
* Check if the given pattern in the query is 'non local'.
*
* A non-local pattern has multiple root nodes and can match within a
* repeating sequence of nodes, as specified by the grammar. Non-local
* patterns disable certain optimizations that would otherwise be possible
* when executing a query on a specific range of a syntax tree.
*/
bool ts_query_is_pattern_non_local(const TSQuery *self, uint32_t pattern_index);
/*
* Check if a given pattern is guaranteed to match once a given step is reached.
* The step is specified by its byte offset in the query's source code.
*/
bool ts_query_is_pattern_guaranteed_at_step(const TSQuery *self, uint32_t byte_offset);
/**
* Get the name and length of one of the query's captures, or one of the