An example of an error cycle in a `parser.c`:
```
static const TSSymbol ts_symbol_map[] = {
...
[anon_sym_RBRACE] = anon_sym_RBRACE2,
[anon_sym_RBRACE2] = anon_sym_RBRACE,
...
};
```
Due to an oversight in #1589, I added `primary_field_ids` into the
`TSLanguage` struct in a place that wasn't the end. This is not actually
backwards compatible and causes downstream failures :(
This change exposes a new `primary_state_ids` field on the `TSLanguage`
struct, and populates it by tracking the first encountered state with a
given `core_id`. (For posterity: the initial change just exposed
`core_id` and deduplicated within `ts_analyze_query`).
With this `primary_state_ids` field in place, the
`ts_query__analyze_patterns` function only needs to populate its
subgraphs with starting states that are _primary_, since non-primary
states behave identically to primary ones. This leads to large savings
across the board, since most states are not primary.
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 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)
