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fun/scripts/run_examples.sh

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#!/usr/bin/env bash
set -euo pipefail
# This file is part of the Fun programming language.
# https://fun-lang.xyz/
#
# Copyright 2025 Johannes Findeisen <you@hanez.org>
# Licensed under the terms of the Apache-2.0 license.
# https://opensource.org/license/apache-2-0
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")"/.. && pwd)"
EX_DIR="$ROOT/examples"
# Optional overrides via FUN_BIN env. First positional arg may now be an examples subdirectory.
BIN="${FUN_BIN:-}"
SUBDIR="${1:-}"
pick_bin() {
local cands=(
"$ROOT/fun"
"$ROOT/build/fun"
"$ROOT/build_debug/fun"
"$ROOT/build_release/fun"
)
for p in "${cands[@]}"; do
[[ -x "$p" ]] && { echo "$p"; return 0; }
done
# Last resort: search shallowly for an executable named 'fun' under common build dirs
local found
found="$(
find "$ROOT" -maxdepth 3 -type f -name fun -perm -u+x 2>/dev/null \
| grep -E '/(build|cmake-build[^/]*)/fun$' \
| head -n 1 || true
)"
[[ -n "$found" ]] && { echo "$found"; return 0; }
return 1
}
# If user passed a subdir that actually looks like an executable path, treat it as BIN for backward compatibility
if [[ -n "$SUBDIR" && -x "$SUBDIR" && ! -d "$EX_DIR/$SUBDIR" ]]; then
BIN="$SUBDIR"
SUBDIR=""
fi
if [[ -z "${BIN}" ]]; then
if ! BIN="$(pick_bin)"; then
echo "error: fun binary not found. Try building it (e.g., via CMake) or pass it explicitly:" >&2
echo " FUN_BIN=/path/to/fun scripts/run_examples.sh [examples-subdir]" >&2
echo "or: scripts/run_examples.sh /path/to/fun" >&2
exit 2
fi
fi
if [[ ! -x "$BIN" ]]; then
echo "error: fun binary not found or not executable at $BIN" >&2
exit 2
fi
# Ensure stdlib is discoverable for examples unless user already set it
if [[ -z "${FUN_LIB_DIR:-}" ]]; then
export FUN_LIB_DIR="$ROOT/lib"
fi
# Do not auto-move failing examples; keep user's workspace unchanged
# Determine target examples directory (optionally restricted to a subdir)
TARGET_DIR="$EX_DIR"
if [[ -n "${SUBDIR}" ]]; then
if [[ -d "$EX_DIR/$SUBDIR" ]]; then
TARGET_DIR="$EX_DIR/$SUBDIR"
else
echo "error: examples subdirectory not found: $SUBDIR" >&2
echo " expected at: $EX_DIR/$SUBDIR" >&2
exit 2
fi
fi
shopt -s nullglob
files=("$TARGET_DIR"/*.fun)
shopt -u nullglob
if (( ${#files[@]} == 0 )); then
echo "No .fun example files found in $TARGET_DIR"
exit 0
fi
rc=0
fail_count=0
for f in "${files[@]}"; do
base_name="$(basename "$f")"
# If INI support is disabled, skip INI examples to avoid expected failures
if [[ "${FUN_WITH_INI:-}" =~ ^(0|OFF|off|false|False)$ ]]; then
if [[ "$base_name" == ini_*.fun ]]; then
echo "=== Skipping (INI disabled): examples/$base_name ==="
continue
fi
fi
echo "=== Running: ${f#$ROOT/} ==="
if ! "$BIN" "$f"; then
echo "FAILED: ${f#$ROOT/}"
# Intentionally do not move files on failure; leave control to the user
rc=1
((fail_count++))
fi
done
if (( rc == 0 )); then
echo "All examples ran successfully. Failed: ${fail_count}"
else
echo "Some examples failed. Failed: ${fail_count}"
fi
exit $rc