class ESRuby::Build

Attributes

build[R]

Public Class Methods

new(*args) click to toggle source
Calls superclass method
# File lib/esruby/build.rb, line 9
def self.new(*args)
  raise 'can only build one project at a time' if @build
  new_build = super
  @build = new_build
  new_build
end
new(&block) click to toggle source
# File lib/esruby/build.rb, line 19
def initialize(&block)
  @configuration = Configuration.new
  @configuration.instance_eval(&block)
end

Public Instance Methods

appended_js_sources() click to toggle source
# File lib/esruby/build.rb, line 69
def appended_js_sources
  js_files = []
  Gem::Specification.specifications.each do |specification|
    js_files += specification.appended_js_sources
  end
  js_files += @configuration.appended_js_sources
  js_files
end
build() click to toggle source
# File lib/esruby/build.rb, line 24
def build
  FileUtils.mkdir_p(build_directory)
  build_mruby_config
  build_mruby
  load_gems
  build_app
end
build_app() click to toggle source
# File lib/esruby/build.rb, line 138
def build_app
  mrbc = "#{build_directory}/host/bin/mrbc"
  js_arguments = prepended_js_sources.map { |path| "--pre-js #{path}" }.join(" ")
  js_arguments += " "
  js_arguments += appended_js_sources.map { |path| "--post-js #{path}" }.join(" ")
  RakeFileUtils.sh "#{mrbc} -B app -o #{build_directory}/app.c #{ruby_sources.join(" ")}"
  RakeFileUtils.sh "emcc --bind #{cxx_include_argument} #{build_directory}/app.c -o #{build_directory}/app.o #{build_directory}/emscripten/lib/libmruby.a -lm #{js_arguments} #{optimization_argument} #{closure_argument} #{debug_argument} #{flags} -s ALLOW_MEMORY_GROWTH=1"
  RakeFileUtils.sh "emcc -std=c++11 --bind #{cxx_include_argument} #{gem_directory}/resources/cpp/main.cpp -o #{build_directory}/main.o #{build_directory}/emscripten/lib/libmruby.a -lm #{js_arguments} #{optimization_argument} #{closure_argument} #{debug_argument} #{flags} -s ALLOW_MEMORY_GROWTH=1"
  RakeFileUtils.sh "emcc --bind #{cxx_include_argument} -o #{build_directory}/output.js #{build_directory}/app.o #{build_directory}/main.o #{build_directory}/emscripten/lib/libmruby.a -lm #{js_arguments} #{optimization_argument} #{closure_argument} #{debug_argument} #{flags} -s ALLOW_MEMORY_GROWTH=1 -s WASM=0 -s DISABLE_EXCEPTION_CATCHING=0"
  #if build.build_mode == 'production'
  # ENV["EMCC_CLOSURE_ARGS"] = "--language_in=ECMASCRIPT6" #possibly allow setting output: --language_out=ECMASCRIPT6
  #  sh "java -jar #{PROJECT_DIRECTORY}/emsdk/emscripten/incoming/third_party/closure-compiler/compiler.jar --js #{build.absolute_build_directory}/output.js --js_output_file #{build.absolute_output}"
  #else
    FileUtils.cp("#{build_directory}/output.js", "#{output}")
  #end
  #--language_in=ECMASCRIPT6
end
build_mruby() click to toggle source
# File lib/esruby/build.rb, line 132
def build_mruby
  Dir.chdir(mruby_directory) do
    RakeFileUtils.sh "rake"
  end
end
build_mruby_config() click to toggle source
# File lib/esruby/build.rb, line 86
def build_mruby_config
  template = File.read("#{gem_directory}/resources/build_config.eruby")
  eruby = Erubis::Eruby.new(template)
  config = {}
  config[:optimization_argument] = optimization_argument
  config[:closure_argument] = closure_argument
  config[:debug_argument] = debug_argument
  config[:build_directory] = build_directory
  config[:project_directory] = project_directory
  config[:gems] = gems
  config[:gem_paths_file] = gem_paths_file
  config[:flags] = @configuration.flags
  new_output = eruby.result(config)
  output_path = "#{build_directory}/build_config.rb"
  old_output = File.read(output_path) if File.exists?(output_path)
  File.write(output_path, new_output) if (old_output != new_output) # only write if updated
  ENV["MRUBY_CONFIG"] = output_path # used by the mruby build process
end
closure_argument() click to toggle source
# File lib/esruby/build.rb, line 127
def closure_argument
  #"--closure 0"
  ""
end
cxx_include_argument() click to toggle source
# File lib/esruby/build.rb, line 52
def cxx_include_argument
  paths = []
  paths << "#{mruby_directory}/include"
  paths += gem_paths.map { |gem_path| "#{gem_path}/include" }
  arguments = paths.map { |path| "-I #{path}" }
  argument = arguments.join(" ")
end
debug_argument() click to toggle source
# File lib/esruby/build.rb, line 116
def debug_argument
  case build_mode
  when 'production'
    "-g0"
  when 'development'
    ""
  else
    raise
  end
end
flags() click to toggle source
# File lib/esruby/build.rb, line 82
def flags
  @configuration.flags.join(" ")
end
gem_directory() click to toggle source
# File lib/esruby/build.rb, line 32
def gem_directory
  ESRuby.gem_directory
end
gem_paths() click to toggle source
# File lib/esruby/build.rb, line 44
def gem_paths
  JSON.parse(File.read(gem_paths_file))
end
gem_paths_file() click to toggle source
# File lib/esruby/build.rb, line 48
def gem_paths_file
  "#{build_directory}/gem_paths.json"
end
load_gems() click to toggle source
# File lib/esruby/build.rb, line 36
def load_gems
  gem_paths.each do |gem_path|
    esruby_spec_path = "#{gem_path}/esruby_gem"
    load(esruby_spec_path) if File.file?(esruby_spec_path)
  end
  nil
end
optimization_argument() click to toggle source
# File lib/esruby/build.rb, line 105
def optimization_argument
  case build_mode
  when 'production'
    "-O2"
  when 'development'
    "-O0"
  else
    raise
  end
end
prepended_js_sources() click to toggle source
# File lib/esruby/build.rb, line 60
def prepended_js_sources
  js_files = []
  Gem::Specification.specifications.each do |specification|
    js_files += specification.prepended_js_sources
  end
  js_files += @configuration.prepended_js_sources
  js_files
end
ruby_sources() click to toggle source
# File lib/esruby/build.rb, line 78
def ruby_sources
  @configuration.ruby_sources
end