JavaScript bindings

[kddnewton]

No description provided.

[ianks]

Looks good overall. Couple small suggestions to make things work on Mac, and to avoid exporting a ton of symbols:

diff --git i/Makefile w/Makefile
index d64d9686..632b4dd2 100644
--- i/Makefile
+++ w/Makefile
@@ -36,7 +36,8 @@ build/librubyparser.a: $(STATIC_OBJECTS)
 
 build/prism.wasm: Makefile $(SOURCES) $(HEADERS)
 	$(ECHO) "building $@"
-	$(Q) $(WASI_SDK_PATH)/bin/clang --sysroot=$(WASI_SDK_PATH)/share/wasi-sysroot/ $(DEBUG_FLAGS) -DPRISM_EXPORT_SYMBOLS -D_WASI_EMULATED_MMAN -lwasi-emulated-mman $(CPPFLAGS) $(CFLAGS) -Wl,--export-all -Wl,--no-entry -mexec-model=reactor -o $@ $(SOURCES)
+	$(Q) mkdir -p $(@D)
+	$(Q) $(WASI_SDK_PATH)/bin/clang --sysroot=$(WASI_SDK_PATH)/share/wasi-sysroot/ -I$(WASI_SDK_PATH)/share/wasi-sysroot/include $(DEBUG_FLAGS) -DPRISM_EXPORT_SYMBOLS -D_WASI_EMULATED_MMAN -lwasi-emulated-mman $(CPPFLAGS) $(CFLAGS) -Wl,--export-dynamic -Wl,--no-entry -mexec-model=reactor -o $@ $(SOURCES)
 
 build/shared/%.o: src/%.c Makefile $(HEADERS)
 	$(ECHO) "compiling $@"

Which results in:

❯ make build/prism.wasm WASI_SDK_PATH=$HOME/Downloads/wasi-sdk-20.0
...

❯ wasm-tools print build/prism.wasm | grep 'export'
  (export "memory" (memory 0))
  (export "_initialize" (func 10))
  (export "pm_token_type_to_str" (func 13))
  (export "pm_buffer_init" (func 50))
  (export "pm_buffer_free" (func 48))
  (export "pm_string_source" (func 29))
  (export "pm_string_length" (func 41))
  (export "pm_prettyprint" (func 16))
  (export "pm_list_empty_p" (func 28))
  (export "pm_list_size" (func 29))
  (export "pm_list_free" (func 31))
  (export "pm_string_free" (func 42))
  (export "pm_string_mapped_init" (func 43))
  (export "pm_string_sizeof" (func 44))
  (export "pm_string_list_init" (func 47))
  (export "pm_string_list_free" (func 48))
  (export "pm_buffer_sizeof" (func 44))
  (export "pm_buffer_value" (func 29))
  (export "pm_buffer_length" (func 41))
  (export "pm_lex_serialize" (func 72))
  (export "pm_parser_init" (func 155))
  (export "pm_parse" (func 160))
  (export "pm_node_destroy" (func 283))
  (export "pm_parser_free" (func 158))
  (export "pm_parse_lex_serialize" (func 74))
  (export "pm_serialize" (func 163))
  (export "pm_regexp_named_capture_group_names" (func 75))
  (export "pm_pack_parse" (func 80))
  (export "pm_size_to_native" (func 81))
  (export "pm_version" (func 152))
  (export "pm_parser_register_encoding_changed_callback" (func 156))
  (export "pm_parser_register_encoding_decode_callback" (func 157))
  (export "pm_parse_serialize" (func 164))
  (export "pm_node_memsize" (func 285))
  (export "pm_node_type_to_str" (func 288))

[kddnewton]

@ianks that's a good point, I'm going to try to do it in a follow-up because I think I need some additional functions. Right now I'm explicitly using calloc and free, which is probably wrong but I couldn't figure out another way to do it.