# Copyright 2013 - present Facebook.
# All Rights Reserved.

REMOVE = rm -vf
REMOVE_DIR = rm -rvf
COPY = cp -f -p
COPY_DIR = cp -rf
MKDIR = mkdir -p
LINK = ln -sf

OCAML_INCLUDE_DIR = $(shell ocamlc -where)

#### ATDGEN declarations ####

ATDGEN_SUFFIXES = _t.ml _t.mli _j.ml _j.mli

ATDGEN_INCLUDE_DIR = $(shell ocamlfind query atdgen)
BINIOU_INCLUDE_DIR = $(shell ocamlfind query biniou)
YOJSON_INCLUDE_DIR = $(shell ocamlfind query yojson)
EASYFORMAT_INCLUDE_DIR = $(shell ocamlfind query easy-format)

ATDGEN_INCLUDES = -I,$(EASYFORMAT_INCLUDE_DIR),-I,$(BINIOU_INCLUDE_DIR),-I,$(YOJSON_INCLUDE_DIR),-I,$(ATDGEN_INCLUDE_DIR)
ATDGEN_LIBS = biniou atdgen
ATDGEN_MODS = easy_format yojson ag_oj_run ag_util
ATDGEN_OPTIONS = -cflags -annot -lflags $(ATDGEN_INCLUDES) -cflags $(ATDGEN_INCLUDES) $(addprefix -lib ,$(ATDGEN_LIBS)) $(addprefix -mod ,$(ATDGEN_MODS))

#### Global declarations ####

ROOT = $(shell cd ../.. && pwd)

GLOBAL_LIBS = unix str

BUILDDIR = ../_build-infer
ANNOTDIR = $(ROOT)/infer/src/_build
BINDIR = $(ROOT)/infer/bin

ifneq ($(wildcard $(BUILDDIR)/sanitize.sh),)
	SANITIZE_SCRIPT = $(BUILDDIR)/sanitize.sh
endif

GLOBAL_LFLAGS =  -annot
GLOBAL_CFLAGS = -bin-annot
GLOBAL_OPTIONS = -lflags $(GLOBAL_LFLAGS) -cflags $(GLOBAL_CFLAGS) $(addprefix -lib ,$(GLOBAL_LIBS))

#### Backend declarations ####

BACKEND_SOURCES = backend

INFERANALYZE_MAIN = $(BACKEND_SOURCES)/inferanalyze
INFERANALYZE_BINARY = $(BINDIR)/InferAnalyze

#### Typeprop declarations ####

TYPEPROP_MAIN = $(BACKEND_SOURCES)/type_prop
TYPEPROP_BINARY = $(BINDIR)/Typeprop

#### InferPrint declarations ####

INFERPRINT_ATDGEN_STUB_BASE = $(BACKEND_SOURCES)/jsonbug
INFERPRINT_ATDGEN_STUB_ATD = $(INFERPRINT_ATDGEN_STUB_BASE).atd
INFERPRINT_ATDGEN_STUBS = $(addprefix $(INFERPRINT_ATDGEN_STUB_BASE), $(ATDGEN_SUFFIXES))

INFERPRINT_MAIN = $(BACKEND_SOURCES)/inferprint
INFERPRINT_BINARY = $(BINDIR)/InferPrint

#### Java declarations ####

EXTLIB_INCLUDE_DIR = $(shell ocamlfind query extlib)
PTREES_INCLUDE_DIR = $(shell ocamlfind query ptrees)
JAVALIB_INCLUDE_DIR = $(shell ocamlfind query javalib)
SAWJA_INCLUDE_DIR = $(shell ocamlfind query sawja)
ZIP_INCLUDE_DIR = $(shell ocamlfind query camlzip)

JAVA_INCLUDES = -I,$(EXTLIB_INCLUDE_DIR),-I,$(ZIP_INCLUDE_DIR),-I,$(PTREES_INCLUDE_DIR),-I,$(JAVALIB_INCLUDE_DIR),-I,$(SAWJA_INCLUDE_DIR)
JAVA_LIBS = zip extLib ptrees javalib sawja
JAVA_OPTIONS = -cflags -annot -lflags $(JAVA_INCLUDES) -cflags $(JAVA_INCLUDES) $(addprefix -lib ,$(JAVA_LIBS))

JAVA_SOURCES = java

INFERJAVA_MAIN = $(JAVA_SOURCES)/jMain
INFERJAVA_BINARY = $(BINDIR)/InferJava

#### Clang declarations ####

CLANG_SOURCES = clang
INFERCLANG_MAIN = $(CLANG_SOURCES)/cMain
INFERCLANG_BINARY = $(BINDIR)/InferClang

CLANG_PLUGIN_ROOT ?= $(shell cd $(ROOT)/../facebook-clang-plugin && pwd)
CLANG_PLUGIN_BUILD = $(CLANG_PLUGIN_ROOT)/build
CLANG_PLUGIN_BINARIES = $(addprefix $(CLANG_PLUGIN_ROOT)/clang-ocaml/build/, clang_ast_converter clang_ast_named_decl_printer)

CLANG_OCAML_ROOT = $(CLANG_PLUGIN_ROOT)/clang-ocaml
CLANG_OCAML_BUILD = $(CLANG_OCAML_ROOT)/build

CLANG_AST_BASE_NAME = clang_ast
CLANG_ATDGEN_STUB_BASE = $(CLANG_SOURCES)/$(CLANG_AST_BASE_NAME)
CLANG_ATDGEN_STUB_ATD = $(CLANG_OCAML_BUILD)/$(CLANG_AST_BASE_NAME).atd
CLANG_ATDGEN_STUBS = $(addprefix $(CLANG_SOURCES)/$(CLANG_AST_BASE_NAME), $(ATDGEN_SUFFIXES))

INFER_CLANG_AST_PROJ = $(addprefix $(CLANG_SOURCES)/, clang_ast_proj.ml clang_ast_proj.mli)
FCP_CLANG_AST_PROJ = $(addprefix $(CLANG_OCAML_BUILD)/, clang_ast_proj.ml clang_ast_proj.mli)

#### End of declarations ####

# Check whether .facebook file exists in a root directory.
# Based on that determine which code should be loaded
ifeq ($(wildcard $(ROOT)/.facebook),)
	EXTRA_DEPS = opensource
else 
	EXTRA_DEPS = facebook
endif	

DEPENDENCIES = $(BACKEND_SOURCES) checkers facebook/checkers facebook/checkers/graphql facebook/scripts harness $(EXTRA_DEPS)

OCAMLBUILD = ocamlbuild -build-dir $(BUILDDIR) -j 0 $(addprefix -I , $(DEPENDENCIES)) $(GLOBAL_OPTIONS) $(ATDGEN_OPTIONS)  $(JAVA_OPTIONS)

.PHONY: all java clang build_java build_clang annotations init sanitize version clean

all: java clang

java: build_java annotations $(INFERANALYZE_BINARY) $(INFERPRINT_BINARY) $(INFERJAVA_BINARY)

clang: build_clang annotations $(INFERANALYZE_BINARY) $(INFERPRINT_BINARY) $(INFERCLANG_BINARY)

build_java: init $(INFERPRINT_ATDGEN_STUBS)
	$(OCAMLBUILD) $(TYPEPROP_MAIN).native $(INFERANALYZE_MAIN).native $(INFERPRINT_MAIN).native $(INFERJAVA_MAIN).native

build_clang: init $(INFERPRINT_ATDGEN_STUBS) check_clang_plugin $(CLANG_ATDGEN_STUBS)
	$(OCAMLBUILD) $(INFERANALYZE_MAIN).native $(INFERPRINT_MAIN).native $(INFERCLANG_MAIN).native

annotations:
	rsync -r --delete --exclude=*.ml* --exclude=*.o --exclude=*.cm* --exclude=*.native $(BUILDDIR)/* $(ANNOTDIR)

check_clang_plugin:
	$(ROOT)/scripts/check_clang_plugin_version.sh $(CLANG_PLUGIN_ROOT)

$(INFERPRINT_ATDGEN_STUBS): $(INFERPRINT_ATDGEN_STUB_ATD)
	atdgen -t $(INFERPRINT_ATDGEN_STUB_ATD) -o $(INFERPRINT_ATDGEN_STUB_BASE)
	atdgen -j $(INFERPRINT_ATDGEN_STUB_ATD) -o $(INFERPRINT_ATDGEN_STUB_BASE)

$(CLANG_ATDGEN_STUBS) $(INFER_CLANG_AST_PROJ): $(CLANG_ATDGEN_STUB_ATD) $(CLANG_PLUGIN_BINARIES) $(FCP_CLANG_AST_PROJ)
	# rebuild the artifacts of the AST files whenever they're upated in FCP
	# also copy the ast_proj files whenever they are updated
	atdgen -rec -t $(CLANG_ATDGEN_STUB_ATD) -o $(CLANG_ATDGEN_STUB_BASE)
	atdgen -rec -j $(CLANG_ATDGEN_STUB_ATD) -o $(CLANG_ATDGEN_STUB_BASE)
	$(COPY) $(CLANG_OCAML_BUILD)/clang_ast_proj.ml $(CLANG_SOURCES)
	$(COPY) $(CLANG_OCAML_BUILD)/clang_ast_proj.mli $(CLANG_SOURCES)


init: sanitize version $(BUILDDIR)

sanitize:
	$(SANITIZE_SCRIPT)

ifneq ($(shell which git),)
MAJOR = 0
MINOR = 1
PATCH = 1

GIT_COMMIT = $(shell git rev-parse HEAD | awk '{print $0; exit}' | xargs echo -n | sed 's/[\/&]/\\&/g')
GIT_BRANCH = $(shell git rev-parse --abbrev-ref HEAD | awk '{print $0; exit}' | xargs echo -n | sed 's/[\/&]/\\&/g')
GIT_TAG = $(shell git tag --points-at $(GIT_COMMIT))

version:
	sed -e 's/@MAJOR@/$(MAJOR)/g' \
		-e 's/@MINOR@/$(MINOR)/g' \
		-e 's/@PATCH@/$(PATCH)/g' \
		-e 's/@GIT_COMMIT@/$(GIT_COMMIT)/g' \
		-e 's/@GIT_BRANCH@/$(GIT_BRANCH)/g' \
		-e 's/@GIT_TAG@/$(GIT_TAG)/g' \
		$(BACKEND_SOURCES)/version.ml.in > $(BACKEND_SOURCES)/version.ml
else
version:
	$(info Infer is not tracked, not updating $(BACKEND_SOURCES)/version.ml)
endif

$(BUILDDIR):
	$(MKDIR) $(BUILDDIR)

$(INFERANALYZE_BINARY): $(BUILDDIR)/$(INFERANALYZE_MAIN).native
	$(COPY) $(BUILDDIR)/$(INFERANALYZE_MAIN).native $(INFERANALYZE_BINARY)

$(INFERPRINT_BINARY): $(BUILDDIR)/$(INFERPRINT_MAIN).native
	$(COPY) $(BUILDDIR)/$(INFERPRINT_MAIN).native $(INFERPRINT_BINARY)

$(INFERJAVA_BINARY): $(BUILDDIR)/$(INFERJAVA_MAIN).native
	$(COPY) $(BUILDDIR)/$(INFERJAVA_MAIN).native $(INFERJAVA_BINARY)

$(INFERCLANG_BINARY): $(BUILDDIR)/$(INFERCLANG_MAIN).native
	$(COPY) $(BUILDDIR)/$(INFERCLANG_MAIN).native $(INFERCLANG_BINARY)

$(TYPEPROP_BINARY): $(BUILDDIR)/$(TYPEPROP_MAIN).native
	$(COPY) $(BUILDDIR)/$(TYPEPROP_MAIN).native $(TYPEPROP_BINARY)

clean: $(BUILDDIR)
	$(OCAMLBUILD) -clean
	$(REMOVE_DIR) $(ANNOTDIR)
	$(REMOVE) $(TYPEPROP_BINARY) $(INFERANALYZE_BINARY) $(INFERPRINT_BINARY) $(INFERJAVA_BINARY) $(INFERCLANG_BINARY)