# Copyright (c) 2019 Calvin Rose and contributors
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.

project('janet', 'c',
  default_options : ['c_std=c99', 'b_lundef=false', 'default_library=both'],
  version : '1.0.0')

# Global settings
janet_path = join_paths(get_option('prefix'), get_option('libdir'), 'janet')
header_path = join_paths(get_option('prefix'), get_option('includedir'), 'janet')

# Link math library on all systems
cc = meson.get_compiler('c')
m_dep = cc.find_library('m', required : false)
dl_dep = cc.find_library('dl', required : false)

# Link options
if build_machine.system() != 'windows'
    add_project_link_arguments('-rdynamic', language : 'c')
endif

# Generate custom janetconf.h
conf = configuration_data()
version_parts = meson.project_version().split('.')
last_parts = version_parts[2].split('-')
if last_parts.length() > 1
  conf.set_quoted('JANET_VERSION_EXTRA', '-' + last_parts[1])
else
  conf.set_quoted('JANET_VERSION_EXTRA', '')
endif
conf.set('JANET_VERSION_MAJOR', version_parts[0].to_int())
conf.set('JANET_VERSION_MINOR', version_parts[1].to_int())
conf.set('JANET_VERSION_PATCH', last_parts[0].to_int())
conf.set_quoted('JANET_VERSION', meson.project_version())
# Use options
conf.set_quoted('JANET_BUILD', get_option('git_hash'))
conf.set('JANET_NO_NANBOX', not get_option('nanbox'))
conf.set('JANET_SINGLE_THREADED', not get_option('single_threaded'))
conf.set('JANET_NO_DYNAMIC_MODULES', not get_option('dynamic_modules'))
conf.set('JANET_NO_DOCSTRINGS', not get_option('docstrings'))
conf.set('JANET_NO_SOURCEMAPS', not get_option('sourcemaps'))
conf.set('JANET_NO_ASSEMBLER', not get_option('assembler'))
conf.set('JANET_NO_PEG', not get_option('peg'))
conf.set('JANET_REDUCED_OS', get_option('reduced_os'))
conf.set('JANET_NO_TYPED_ARRAY', not get_option('typed_array'))
conf.set('JANET_NO_INT_TYPES', not get_option('int_types'))
conf.set('JANET_RECURSION_GUARD', get_option('recursion_guard'))
conf.set('JANET_MAX_PROTO_DEPTH', get_option('max_proto_depth'))
conf.set('JANET_MAX_MACRO_EXPAND', get_option('max_macro_expand'))
conf.set('JANET_STACK_MAX', get_option('stack_max'))
jconf = configure_file(output : 'janetconf.h',
  configuration : conf)

# Include directories
incdir = include_directories(['src/include', '.'])

# Building generated sources
xxd = executable('xxd', 'tools/xxd.c', native : true)
gen = generator(xxd,
  output : '@BASENAME@.gen.c',
  arguments : ['@INPUT@', '@OUTPUT@', '@EXTRA_ARGS@'])
boot_gen = gen.process('src/boot/boot.janet', extra_args: 'janet_gen_boot')
init_gen = gen.process('src/mainclient/init.janet', extra_args: 'janet_gen_init')

# Order is important here, as some headers
# depend on other headers for the amalg target
core_headers = [
  'src/core/util.h',
  'src/core/state.h',
  'src/core/gc.h',
  'src/core/vector.h',
  'src/core/fiber.h',
  'src/core/regalloc.h',
  'src/core/compile.h',
  'src/core/emit.h',
  'src/core/symcache.h'
]

core_src = [
  'src/core/abstract.c',
  'src/core/array.c',
  'src/core/asm.c',
  'src/core/buffer.c',
  'src/core/bytecode.c',
  'src/core/capi.c',
  'src/core/cfuns.c',
  'src/core/compile.c',
  'src/core/corelib.c',
  'src/core/debug.c',
  'src/core/emit.c',
  'src/core/fiber.c',
  'src/core/gc.c',
  'src/core/inttypes.c',
  'src/core/io.c',
  'src/core/marsh.c',
  'src/core/math.c',
  'src/core/os.c',
  'src/core/parse.c',
  'src/core/peg.c',
  'src/core/pp.c',
  'src/core/regalloc.c',
  'src/core/run.c',
  'src/core/specials.c',
  'src/core/string.c',
  'src/core/strtod.c',
  'src/core/struct.c',
  'src/core/symcache.c',
  'src/core/table.c',
  'src/core/tuple.c',
  'src/core/typedarray.c',
  'src/core/util.c',
  'src/core/value.c',
  'src/core/vector.c',
  'src/core/vm.c',
  'src/core/wrap.c'
]

boot_src = [
  'src/boot/array_test.c',
  'src/boot/boot.c',
  'src/boot/buffer_test.c',
  'src/boot/number_test.c',
  'src/boot/system_test.c',
  'src/boot/table_test.c',
]

mainclient_src = [
  'src/mainclient/line.c',
  'src/mainclient/main.c'
]

# Build boot binary
janet_boot = executable('janet-boot', core_src, boot_src, boot_gen,
  include_directories : incdir,
  c_args : '-DJANET_BOOTSTRAP',
  dependencies : [m_dep, dl_dep],
  native : true)

# Build core image
core_image = custom_target('core_image',
  input : [janet_boot],
  output : 'core_image.gen.c',
  command : [janet_boot, '@OUTPUT@', 'JANET_PATH', janet_path, 'JANET_HEADERPATH', header_path])

libjanet = library('janet', core_src, core_image,
  include_directories : incdir,
  dependencies : [m_dep, dl_dep],
  install : true)

janet_mainclient = executable('janet', core_src, core_image, init_gen, mainclient_src,
  include_directories : incdir,
  dependencies : [m_dep, dl_dep],
  install : true)

if meson.is_cross_build()
  janet_nativeclient = executable('janet-native', core_src, core_image, init_gen, mainclient_src,
    include_directories : incdir,
    dependencies : [m_dep, dl_dep],
    native : true)
else
  janet_nativeclient = janet_mainclient
endif

# Documentation
docs = custom_target('docs',
  input : ['tools/gendoc.janet'],
  output : ['doc.html'],
  capture : true,
  command : [janet_nativeclient, '@INPUT@'])

# Amalgamated source
amalg = custom_target('amalg',
  input : ['tools/amalg.janet', core_headers, core_src, core_image],
  output : ['janet.c'],
  capture : true,
  command : [janet_nativeclient, '@INPUT@'])

# Amalgamated client
janet_amalgclient = executable('janet-amalg', amalg, init_gen, mainclient_src,
  include_directories : incdir,
  dependencies : [m_dep, dl_dep],
  build_by_default : false)

# Tests
test_files = [
  'test/suite0.janet',
  'test/suite1.janet',
  'test/suite2.janet',
  'test/suite3.janet',
  'test/suite4.janet',
  'test/suite5.janet',
  'test/suite6.janet'
]
foreach t : test_files
  test(t, janet_nativeclient, args : files([t]), workdir : meson.current_source_dir())
endforeach

# Repl
run_target('repl', command : [janet_nativeclient])

# For use as meson subproject (wrap)
janet_dep = declare_dependency(include_directories : incdir,
  link_with : libjanet)

# Installation
install_man('janet.1')
install_headers(['src/include/janet.h', jconf], subdir: 'janet')
janet_libs = [
  'auxlib/cook.janet',
  'auxlib/path.janet'
]
janet_binscripts = [
  'auxbin/jpm'
]
install_data(sources : janet_libs, install_dir : janet_path)
install_data(sources : janet_binscripts, install_dir : 'bin')