BASEDIR = ../..
CC = gcc
LEXER = re2c
PARSER = $(BASEDIR)/bin/lemon
LEMON_SRC_DIR = $(BASEDIR)/ext/sqlite/tool

INCLUDE_DIR = $(BASEDIR)/include
CODEC_INCLUDE_DIR = $(INCLUDE_DIR)/codec

CODEC_SRC = $(wildcard codec_*.c)
PARSER_SRC = $(CODEC_SRC:codec_%=parser_%)
CODEC_OBJ = $(CODEC_SRC:.c=.o)
PARSER_OBJ = $(CODEC_OBJ:codec_%=parser_%)
GRAMMAR_OBJ = $(CODEC_OBJ:codec_%=grammar_%)
OBJ = $(GRAMMAR_OBJ) $(PARSER_OBJ) $(CODEC_OBJ)
DBG_OBJ = $(OBJ:%.o=%_dbg.o)
$(info DBG_OBJ: $(DBG_OBJ))

INCLUDE = -I$(INCLUDE_DIR) -I../../ext/tpl/src -I../../ext/hashmap \
	-I../../ext/log/src
CFLAGS = -std=gnu11 -Wall -fPIC -MMD $(INCLUDE)
DBG_CFLAGS = -I../../test -O0 -g3 -DDEBUG

.DEFAULT_GOAL := codec

.PHONY: codec
codec: $(OBJ)

.PHONY: debug
debug: $(DBG_OBJ)

.PHONY: parsers
parsers: $(PARSER_SRC)

%_dbg.o: %.c
	$(CC) $(CFLAGS) $(DBG_CFLAGS) -c $^ -o $@

# Parser C sources.
parser_%.c: lexer_%.re grammar_%.c ../codec.c
	$(LEXER) $< -o $@ -T --case-ranges


.PRECIOUS: grammar_%.c $(CODEC_INCLUDE_DIR)/tokens_%.h
# Parser generators.
grammar_%.c $(CODEC_INCLUDE_DIR)/tokens_%.h: grammar_%.y
	$(PARSER) $< -p -T$(LEMON_SRC_DIR)/lempar.c -d.
	mv grammar_$*.h $(CODEC_INCLUDE_DIR)/tokens_$*.h