# This file is part of NIT ( http://www.nitlanguage.org ).
#
# Copyright 2008 Jean Privat <jean@pryen.org>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

SABLECC=sablecc3

all: parser.nit

# first sed start from first line to line /*I*/ and remove /*.*/
# second sed clones /*B*/ productions, substitute /*B*/ with no_bra and delete /*N*/ lines
# third sed from line /*I*/ to last line and remove /*.*/
nit.sablecc3: nit.sablecc3xx
	@test -f nit.sablecc3 && chmod +w nit.sablecc3 || touch nit.sablecc3
	@echo -n "// This file is autogenerated, no dot modify it" > nit.sablecc3.t
	sed -n -e '1,/\/\*I\*\//{s/\/\*[BIN]\*\///g;p}' nit.sablecc3xx >> nit.sablecc3.t
	sed -n -e '/\/\*B\*\//,/;/{s/\/\*B\*\//_nobra/g;/\/\*N\*\//d;p}' nit.sablecc3xx >> nit.sablecc3.t
	sed -n -e '/\/\*I\*\//,$${s/\/\*[BIN]\*\///g;p}' nit.sablecc3xx >> nit.sablecc3.t
	
	> nit.sablecc3
	sed -n -e '1,/\/\*I2\*\//{s/\/\*[BIN]2\*\///g;p}' nit.sablecc3.t >> nit.sablecc3
	sed -n -e '/\/\*B2\*\//,/;/{s/\/\*B2\*\//_withelse/g;/\/\*N2\*\//d;p}' nit.sablecc3.t >> nit.sablecc3
	sed -n -e '/\/\*I2\*\//,$${s/\/\*[BIN]2\*\///g;p}' nit.sablecc3.t >> nit.sablecc3
	
	cp nit.sablecc3 nit.sablecc3.t
	> nit.sablecc3
	sed -n -e '1,/\/\*I3\*\//{s/\/\*[BIN]3\*\///g;p}' nit.sablecc3.t >> nit.sablecc3
	sed -n -e '/\/\*B3\*\//,/;/{s/\/\*B3\*\//_nopar/g;/\/\*N3\*\//d;p}' nit.sablecc3.t >> nit.sablecc3
	sed -n -e '/\/\*I3\*\//,$${s/\/\*[BIN]3\*\///g;p}' nit.sablecc3.t >> nit.sablecc3
	
	rm nit.sablecc3.t
	@sed -i -e '{s/\/\/#.*//}' nit.sablecc3
	@chmod -w nit.sablecc3

# Note that parser_nodes is automatically synced with the grammar
parser.nit: nit.sablecc3 xss/*.xss
	cp parser_abs.nit parser_abs.nit.bak || true
	${SABLECC} -c nit.sablecc3.dump -t xss/main.xss -p usermodule parser_nodes nit.sablecc3
	diff -u parser_abs.nit.bak parser_abs.nit > parser_abs.patch || true
	patch parser_nodes.nit < parser_abs.patch || true

clean:
	rm -f -- nit.sablecc3 nit.sablecc3.dump parser_abs.patch || true

dist-clean: clean
	rm -f -- parser.nit parser_abs.nit parser_abs.patch parser_abs.nit.bak parser_prod.nit parser_tables.nit lexer.nit || true