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)/lsup/codec
BUILDDIR = ../../build

CODEC_SRC = $(wildcard codec_*.c)
PARSER_SRC = $(CODEC_SRC:codec_%=parser_%)
CODEC_OBJ := $(CODEC_SRC:%.c=$(BUILDDIR)/%.o)
PARSER_OBJ := $(subst codec,parser,$(CODEC_OBJ))
GRAMMAR_OBJ := $(subst codec,grammar,$(CODEC_OBJ))
OBJ = $(GRAMMAR_OBJ) $(PARSER_OBJ) $(CODEC_OBJ)
DBG_OBJ = $(OBJ:%.o=%_dbg.o)

#$(info CODEC_OBJ: $(CODEC_OBJ))
#$(info GRAMMAR_OBJ: $(GRAMMAR_OBJ))
#$(info PARSER_OBJ: $(PARSER_OBJ))
#$(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 $(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)

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

$(BUILDDIR)/%_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$(BUILDDIR)
	mv $(BUILDDIR)/grammar_$*.h $(CODEC_INCLUDE_DIR)/tokens_$*.h
	mv $(BUILDDIR)/grammar_$*.c ./