traxys/tree-sitter
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Add ts_tree_cursor_goto_first_child_for_point function

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This function (and the similar `ts_tree_cursor_goto_first_child_for_byte`)
allows you to efficiently seek the tree cursor to a given position,
exploiting the tree's internal balancing, without having to visit
all of the preceding siblings of each node.
This commit is contained in:
Max Brunsfeld 2021-05-27 12:30:17 -07:00
parent 036aceed57
commit 919e9745a6
5 changed files with 166 additions and 6 deletions
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3
lib/include/tree_sitter/api.h
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@ -651,12 +651,13 @@ bool ts_tree_cursor_goto_first_child(TSTreeCursor *);
/**
* Move the cursor to the first child of its current node that extends beyond
* the given byte offset.
* the given byte offset or point.
*
* This returns the index of the child node if one was found, and returns -1
* if no such child was found.
*/
int64_t ts_tree_cursor_goto_first_child_for_byte(TSTreeCursor *, uint32_t);
int64_t ts_tree_cursor_goto_first_child_for_point(TSTreeCursor *, TSPoint);
TSTreeCursor ts_tree_cursor_copy(const TSTreeCursor *);