These objects are not generally intended to be shared betwen threads,
but they meet the Rust definition of Sync: all of their methods are
that take a shared reference to `self` are safe to call from multiple
threads simultaneously. In other words, there is no interior
mutability.
This is a follow-up to my previous commit 1badd131f9 .
I've made this an extra patch as it requires a minor
API change in <tree_sitter/parser.h>.
This commit moves the remaining generated tables into
the read-only segment.
Before:
$ for f in bash c cpp go html java javascript jsdoc json php python ruby rust; do \
gcc -o $f.o -O2 -Ilib/include -c test/fixtures/grammars/$f/src/parser.c; \
done
$ size --totals *.o
text data bss dec hex filename
5353477 24472 0 5377949 520f9d (TOTALS)
After:
$ for f in bash c cpp go html java javascript jsdoc json php python ruby rust; do \
gcc -o $f.o -O2 -Ilib/include -c test/fixtures/grammars/$f/src/parser.c; \
done
$ size --totals *.o
5378147 0 0 5378147 521063 (TOTALS)
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.
This bridges the gap between how the C API reports this for a query
cursor, but the wasm API defines the method on a query. Whenever you
call a query method that might exceed the match limit, we call the C API
function and transfer the result across the wasm boundary, storing the
result in the JavaScript wrapper class.
This moves most of the generated tables from the data segment into
the text segment (read-only memory) so that it can be shared between
different processes.
As a bonus side effect we can also remove all casts in the generated parsers.
Before:
size --totals target/scratch/*.so
text data bss dec hex filename
853623 4684560 2160 5540343 5489f7 (TOTALS)
After:
size --totals target/scratch/*.so
text data bss dec hex filename
5472086 68616 480 5541182 548d3e (TOTALS)
