#
# Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 only, as
# published by the Free Software Foundation.  Oracle designates this
# particular file as subject to the "Classpath" exception as provided
# by Oracle in the LICENSE file that accompanied this code.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# version 2 for more details (a copy is included in the LICENSE file that
# accompanied this code).
#
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
# or visit www.oracle.com if you need additional information or have any
# questions.
#

################################################################################
# This file makes modifications to module-info.java files based on the build
# configuration.
#
# Depending on build platform, imported modules and optional parts of the build
# being active, some modules need to have extra exports, provides or uses
# declarations added to them. These optional extras are defined in .extra files:
#
# src/<module>/<share,platform>/classes/module-info.java.extra
#
# The contents of the .extra files are simply extra lines that could fit into
# the module-info file.
#
# This makefile is called once for each from-module with the variable
# MODULE naming the from-module.
#
# The modified module-info.java files are put in the gensrc directory where
# they will automatically override the static versions in the src tree.
#
################################################################################

default: all

include $(SPEC)
include MakeBase.gmk
include Modules.gmk

################################################################################
# Define this here since jdk/make/Tools.gmk cannot be included from the top
# make directory. Should probably move some tools away from the jdk repo.
TOOL_GENMODULEINFOSOURCE = $(JAVA_SMALL) \
    $(INTERIM_LANGTOOLS_ARGS) \
    -cp "$(BUILDTOOLS_OUTPUTDIR)/jdk_tools_classes" \
    build.tools.module.GenModuleInfoSource

################################################################################

# Name of modification file.
MOD_FILENAME := module-info.java.extra

# Construct all possible src directories for the module.
MODULE_CLASSES_DIRS := $(call FindModuleSrcDirs, $(MODULE))

# Find all the .extra files in the src dirs.
MOD_FILES := $(wildcard $(foreach f, $(MOD_FILENAME), $(addsuffix /$(f), \
    $(MODULE_CLASSES_DIRS))))

ifneq ($(MOD_FILES), )
  # Only make this call if modification files are found for this module
  ALL_MODULES := $(call FindAllModules)

  $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java: \
      $(firstword $(call FindAllModuleInfos, $(MODULE))) \
      $(BUILD_TOOLS_JDK) \
      $(MOD_FILES) \
      $(call DependOnVariable, ALL_MODULES)
		$(MKDIR) -p $(@D)
		$(RM) $@ $@.tmp
		$(TOOL_GENMODULEINFOSOURCE) -o $@.tmp \
		    --source-file $< \
		    --modules $(call CommaList, $(ALL_MODULES)) \
		    $(MOD_FILES)
		$(MV) $@.tmp $@

  TARGETS += $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java

else
  # If no modifications are found for this module, remove any module-info.java
  # created by a previous build since that is no longer valid.
  ifneq ($(wildcard $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java), )
    $(shell $(RM) $(SUPPORT_OUTPUTDIR)/gensrc/$(MODULE)/module-info.java)
  endif
endif

################################################################################

all: $(TARGETS)