jay = upstream/bin/jay
jay_java_skeleton = upstream/jay/java/skeleton.java
jay_url = http://www.cs.rit.edu/~ats/projects/lp/doc/jay/doc-files/src.zip

jlex_jar = upstream/jlex.jar
jlex_url = http://www.cs.princeton.edu/~appel/modern/java/JLex/current/Main.java

website = $(shell find doc -type f -a ! -path doc/website.jar -a ! -name '*~')

doc/website.jar: $(website)
	jar cfv $@ $^

all:

build/%.java: src/%.l $(jlex)
	false

build/%.java: src/%.y $(jay)
	@mkdir -p `dirname $@`
	$(jay) $< < $(jay_java_skeleton) > $@

$(jlex_jar):
	@cd upstream && \
		mkdir -p jlex && \
		cd jlex && \
		test -e Main.java || curl -O $(jlex_url)
	javac -d upstream/jlex upstream/jlex/Main.java
	echo -e "Manifest-Version: 1.0\nMain-Class: JLex.Main\n" > upstream/jlex/.manifest
	cd upstream/jlex && jar cfm ../../$@ .manifest JLex

$(jay):
	@cd upstream && \
		test -e jay.zip || curl -o jay.zip $(jay_url) && \
		test -d jay || unzip jay.zip
	$(MAKE) -C upstream/jay/src -f makefile
	@rm -f $@
	@mkdir -p `dirname $@`
	ln -s "`pwd`/upstream/jay/src/jay" $@