#!/bin/bash
# builds the language server as WebAssembly: editors/vscode/server/lsp.wasm by
# default, or the path given as the first argument. the server is the compiler
# and src/lsp/server.zc on the map and genome that src/tools/mklsp.sh made in build/lsp,
# and the microcore (src/micro/micro.c) runs them. the host is client/wasmproc.js.
# needs clang with the wasm32 target and wasm-ld; run src/tools/mklsp.sh first.
#   src/tools/mklspwasm.sh [outfile.wasm]
set -e
case "${1:-}" in
    --help|-h) printf '%s\n' 'usage: src/tools/mklspwasm.sh [OUTFILE.wasm]' 'builds the wasm language server; defaults to editors/vscode/server/lsp.wasm.' 'requires clang with wasm32 support and wasm-ld.' 'environment: LSP_BUILD_DIR selects the native lsp build; LSP_REUSE_BUILD=1 reuses its image.'; exit 0 ;;
    -*) echo "mklspwasm: unknown option $1; use --help for usage" >&2; exit 2 ;;
esac
cd "$(dirname "$0")/../.."
OUT=${1:-editors/vscode/server/lsp.wasm}
LSP_BUILD_DIR=${LSP_BUILD_DIR:-build/lsp}
if [ "${LSP_REUSE_BUILD:-0}" != 1 ]; then bash src/tools/mklsp.sh "$LSP_BUILD_DIR" >/dev/null; fi
[ -f "$LSP_BUILD_DIR/src/lsp_genome.h" ] || { echo "mklspwasm: no language server image in $LSP_BUILD_DIR" >&2; exit 1; }
clang --target=wasm32 -O2 -w -fwrapv -nostdlib -fno-builtin -mbulk-memory -DJTYPE=int -DUSE_LSP_GENOME \
	-I"$LSP_BUILD_DIR/src" -Isrc/micro src/micro/micro.c src/micro/port_wasm_stream.c \
	-Wl,--no-entry -Wl,--export=wasm_chunk -Wl,--export=wasm_chunk_cap -Wl,--export=wasm_feed \
	-Wl,--export=wasm_polling -Wl,--export=wasm_close -Wl,--export=wasm_start -Wl,--export=wasm_resume \
	-Wl,--export=memory -Wl,--allow-undefined -Wl,--initial-memory=41943040 -Wl,-z,stack-size=65536 \
	-o "$OUT"
ls -l "$OUT"