# Recursive wildcard function
# http://blog.jgc.org/2011/07/gnu-make-recursive-wildcard-function.html
rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) \
  $(filter $(subst *,%,$2),$d))

PYTHON = $(shell which python2.7 2>/dev/null || echo python) -B
BINDINGS_SRC = $(shell pwd)/dom/bindings/codegen
WEBIDLS_SRC = $(shell pwd)/dom/webidls
WEBIDLS = $(call rwildcard,$(WEBIDLS_SRC),*.webidl)
BINDINGS = $(patsubst %.webidl,%Binding.rs,$(WEBIDLS))
AUTOGEN_SRC = $(foreach var,$(BINDINGS),$(subst $(WEBIDLS_SRC),$(OUT_DIR)/Bindings,$(var)))

export PYTHONPATH := $(BINDINGS_SRC)/parser:$(BINDINGS_SRC)/ply:$(PYTHONPATH)

CACHE_DIR = $(OUT_DIR)/_cache

bindinggen_dependencies := $(addprefix $(BINDINGS_SRC)/,BindingGen.py Bindings.conf Configuration.py CodegenRust.py parser/WebIDL.py) $(OUT_DIR)/ParserResults.pkl $(OUT_DIR)/Bindings/.done

globalgen_dependencies := $(addprefix $(BINDINGS_SRC)/,GlobalGen.py Bindings.conf Configuration.py CodegenRust.py parser/WebIDL.py) $(CACHE_DIR)/.done $(OUT_DIR)/Bindings/.done

.PHONY: all
all: $(AUTOGEN_SRC)

$(OUT_DIR)/Bindings/.done:
	mkdir -p $(OUT_DIR)/Bindings
	touch $@

$(CACHE_DIR)/.done:
	mkdir -p $(CACHE_DIR)
	touch $@

$(OUT_DIR)/ParserResults.pkl: $(globalgen_dependencies) $(WEBIDLS)
	$(PYTHON) \
	  $(BINDINGS_SRC)/GlobalGen.py \
	    --cachedir=$(CACHE_DIR) \
	    $(BINDINGS_SRC)/Bindings.conf \
	    $(OUT_DIR) \
	    . \
	    $(WEBIDLS)

$(AUTOGEN_SRC): $(OUT_DIR)/Bindings/%Binding.rs: $(bindinggen_dependencies) \
						 $(addprefix $(WEBIDLS_SRC)/,%.webidl)
	$(PYTHON) \
	  $(BINDINGS_SRC)/BindingGen.py \
	    $(BINDINGS_SRC)/Bindings.conf \
	    $(OUT_DIR) \
	    $(OUT_DIR)/Bindings/$*Binding \
	    $(addprefix $(WEBIDLS_SRC)/,$*.webidl)
	touch $@