128 lines
3.5 KiB
Bash
Executable file
128 lines
3.5 KiB
Bash
Executable file
#!/usr/bin/env bash
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usage() {
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cat <<EOF
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USAGE
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$0 [--help] [--debug] [--docker]
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SUMMARY
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Compile the Tree-sitter WASM library. This will create two files in the
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\`lib/binding_web\` directory: \`tree-sitter.js\` and \`tree-sitter.wasm\`.
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REQUIREMENTS
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You must have either the \`emcc\` command or the \`docker\` command
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on your PATH for this to work.
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OPTIONS
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--help: Display this message.
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--debug: Compile the library more quickly, with fewer optimizations
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and more runtime assertions.
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--docker: Run emscripten using docker, even if \`emcc\` is installed.
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By default, \`emcc\` will be run directly when available.
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EOF
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}
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set -e
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web_dir=lib/binding_web
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emscripten_flags="-O3"
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minify_js=1
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force_docker=0
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emscripen_version=$(cat "$(dirname "$0")"/../cli/emscripten-version)
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while [[ $# > 0 ]]; do
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case "$1" in
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--debug)
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minify_js=0
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emscripten_flags="-s ASSERTIONS=1 -s SAFE_HEAP=1 -O0"
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;;
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--help)
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usage
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exit 0
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;;
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--docker)
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force_docker=1
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;;
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*)
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usage
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echo "Unrecognized argument '$1'"
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exit 1
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;;
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esac
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shift
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done
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emcc=
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if which emcc > /dev/null && [[ "$force_docker" == "0" ]]; then
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emcc=emcc
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elif which docker > /dev/null; then
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emcc="docker run \
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--rm \
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-v $(pwd):/src:Z \
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-u $(id -u) \
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emscripten/emsdk:$emscripen_version \
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emcc"
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else
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echo 'You must have either `docker` or `emcc` on your PATH to run this script'
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exit 1
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fi
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mkdir -p target/scratch
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runtime_methods='stringToUTF16','AsciiToString'
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# Use emscripten to generate `tree-sitter.js` and `tree-sitter.wasm`
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# in the `target/scratch` directory
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$emcc \
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-s WASM=1 \
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-s TOTAL_MEMORY=33554432 \
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-s ALLOW_MEMORY_GROWTH=1 \
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-s MAIN_MODULE=2 \
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-s NO_FILESYSTEM=1 \
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-s NODEJS_CATCH_EXIT=0 \
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-s NODEJS_CATCH_REJECTION=0 \
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-s EXPORTED_FUNCTIONS=@${web_dir}/exports.json \
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-s EXPORTED_RUNTIME_METHODS=$runtime_methods \
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$emscripten_flags \
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-fno-exceptions \
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-std=c99 \
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-D 'fprintf(...)=' \
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-D NDEBUG= \
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-I lib/src \
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-I lib/include \
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--js-library ${web_dir}/imports.js \
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--pre-js ${web_dir}/prefix.js \
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--post-js ${web_dir}/binding.js \
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--post-js ${web_dir}/suffix.js \
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lib/src/lib.c \
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${web_dir}/binding.c \
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-o target/scratch/tree-sitter.js
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# Use terser to write a minified version of `tree-sitter.js` into
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# the `lib/binding_web` directory.
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if [[ "$minify_js" == "1" ]]; then
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if [ ! -d ${web_dir}/node_modules/terser ]; then
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(
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cd ${web_dir}
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npm install
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)
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fi
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${web_dir}/node_modules/.bin/terser \
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--compress \
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--mangle \
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--keep-classnames \
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-- target/scratch/tree-sitter.js \
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> $web_dir/tree-sitter.js
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else
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cp target/scratch/tree-sitter.js $web_dir/tree-sitter.js
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fi
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mv target/scratch/tree-sitter.wasm $web_dir/tree-sitter.wasm
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