# The root's Makefile: the walker is a project of its own under 01-bootstrap/, so every lane of
# the noslop gate (.harness/quality/noslop.mk) is run there, and CI's `make check` / `make ready` reach it
# from the root unchanged (.github/workflows/noslop.yml, map.yml). This file names the lanes
# and adds none: what each runs, and how hard, is .harness/quality/noslop.mk's.
#
# It also holds the walker's entry from the root, where a README points: the package is
# 01-bootstrap/fpl, so a bare `python -m fpl` run here does not find it. `run` and `repl` put
# 01-bootstrap/ on the path of the one .venv's python, and the check lane runs `run` on an example
# from here (.harness/quality/noslop.mk), so the entry cannot break unnoticed.
#
#   make              the one gate, as `make check`
#   make <lane>       fix quick check harden ready gates tools map venv pristine clean-noslop
#   make run FILE=f   run the file f, a path from the root:    make run FILE=path/to/p.fpl
#   make repl ARGS=a  the REPL, with its arguments a:          make repl ARGS='-e "1 + 2"'
.DEFAULT_GOAL := check
LANES := fix quick check harden ready gates tools map venv pristine clean-noslop
.PHONY: $(LANES) run repl tangle-fpl

$(LANES):
	@$(MAKE) --no-print-directory -C 01-bootstrap $@

# 03-fpl/**/*.md (except OLD/) → sibling *.fpl. Markdown is the source.
tangle-fpl:
	@$(CURDIR)/.venv/bin/python $(CURDIR)/01-bootstrap/tangle_fpl.py


# The walker as the root runs it: the lanes' interpreter (.venv, the root's, synced by `venv`)
# with the package, 01-bootstrap/fpl, put on its path. A relative path means what it means from
# the root, so FILE and a REPL's --session are written from there.
FPLPY := PYTHONPATH=$(CURDIR)/01-bootstrap $(CURDIR)/.venv/bin/python

# The venv is prepared inside 01-bootstrap/ with its chatter sent to stderr, so stdout is the
# program's output and nothing else: `make run` prints what `python -m fpl` prints.
VENV = @$(MAKE) --no-print-directory -C 01-bootstrap venv >&2

run:
	$(VENV)
	@test -n "$(FILE)" || { echo "make run: name the file: make run FILE=path/to/p.fpl" >&2; exit 2; }
	@$(FPLPY) -m fpl "$(FILE)"

repl:
	$(VENV)
	@$(FPLPY) -m fpl.repl $(ARGS)