# 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)
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 $(WEBIDLS_SRC),$(BINDINGS_SRC)/Bindings,$(var)))

CACHE_DIR = $(BINDINGS_SRC)/_cache

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

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

.PHONY: all
all: $(AUTOGEN_SRC)

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

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

$(BINDINGS_SRC)/ParserResults.pkl: $(globalgen_dependencies) $(WEBIDLS)
	$(PYTHON) $(BINDINGS_SRC)/pythonpath.py \
	  -I$(BINDINGS_SRC)/parser -I$(BINDINGS_SRC)/ply \
	  -D$(BINDINGS_SRC) \
	  $(BINDINGS_SRC)/GlobalGen.py $(BINDINGS_SRC)/Bindings.conf . \
	  --cachedir=$(CACHE_DIR) \
	  $(WEBIDLS)

$(AUTOGEN_SRC): $(BINDINGS_SRC)/Bindings/%Binding.rs: $(bindinggen_dependencies) \
						$(addprefix $(WEBIDLS_SRC)/,%.webidl)
	$(PYTHON) $(BINDINGS_SRC)/pythonpath.py \
	  -I$(BINDINGS_SRC)/parser -I$(BINDINGS_SRC)/ply \
	  -D$(BINDINGS_SRC) \
	  $(BINDINGS_SRC)/BindingGen.py \
	  $(BINDINGS_SRC)/Bindings.conf Bindings/$*Binding $(addprefix $(WEBIDLS_SRC)/,$*.webidl)
	touch $@