#!/usr/bin/env bash
# Stream Gatherers (JEP 485, final since JDK 24, no preview flag needed on 25+). Every demo
# asserts its own claims (see Check.java), so a green transcript means the post's claims still
# hold on whatever JDK25 points at.
#   ./scripts/gatherers.sh -> docs/output/98-basics.txt 98-mapconcurrent.txt
#                             98-custom-gatherer.txt 98-collector-vs-gatherer.txt
set -uo pipefail
source "$(dirname "$0")/env.sh"
S="$ROOT/gatherers/src"; B="$ROOT/build/gatherers"; rm -rf "$B"; mkdir -p "$B"

"$JDK25/bin/javac" -d "$B" "$S"/*.java 2>&1 | grep -v -E '^(Note:|$)' || true

run() {
  local outfile="$1" cls="$2"
  { echo "\$ java $cls      (JDK 25)"; "$JDK25/bin/java" -cp "$B" "$cls" 2>&1; echo "exit=${PIPESTATUS[0]}"; } > "$OUT/$outfile" 2>&1
}

run 98-basics.txt GathererBasics
run 98-mapconcurrent.txt MapConcurrentDemo
run 98-custom-gatherer.txt CustomGatherer
run 98-collector-vs-gatherer.txt CollectorVsGatherer

echo "wrote $OUT/98-*.txt"