This PR adds an API to get name of the field of TSNode's child.
It uses same set of arguments as that of ts_node_child, but returns
field name if it is found, otherwise it returns NULL.
This API is useful to implement custom printing of S-expressions such
as following:
"(binary_expression
(binary_expression_left (identifier))
(binary_expression_operator ("+"))
(binary_expression_right (identifier)
)"
Currently, ts_node_string does not allow any customization for printing.
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| .. | ||
| api.h | ||
| parser.h | ||