#!/usr/bin/env bash
# The most useful demonstrations of a preview API are the compile errors. This compiles the same
# JDK 26 sources with the 26 and the 27 compiler and commits what javac actually said.
#   ./scripts/broken-on-27.sh   -> docs/output/20-broken-*.txt
set -uo pipefail
source "$(dirname "$0")/env.sh"
SRC="$ROOT/jep-tour/src"

compile() { # jdk-home release file   -> prints javac's own output, then its real exit code
  local out rc
  out="$( cd "$SRC/broken" && "$1/bin/javac" --enable-preview --release "$2" -Xlint:-preview -d "$ROOT/build/broken-$2" "$3" 2>&1 )"; rc=$?
  printf '%s\n' "$out" | grep -v -E '^(Note: |$)' || true
  echo "exit=$rc"
}

for f in Pem26Style StructuredScope26 Lazy26; do
  out="$OUT/20-broken-$(echo "$f" | tr 'A-Z' 'a-z').txt"
  {
    echo "\$ javac --enable-preview --release 26 $f.java      (JDK 26)"
    compile "$JDK26" 26 "$f.java"
    echo
    echo "\$ javac --enable-preview --release 27 $f.java      (JDK 27)"
    compile "$JDK27" 27 "$f.java"
  } > "$out" 2>&1
  echo "wrote $out"
done

{
  echo "\$ javac --enable-preview --release 27 Dominated.java      (JDK 27)"
  compile "$JDK27" 27 Dominated.java
} > "$OUT/20-broken-dominated.txt" 2>&1
echo "wrote $OUT/20-broken-dominated.txt"