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MRuby::Gem::Specification.new 'mruby-compiler' do |spec|
spec.license = 'MIT'
spec.author = 'mruby developers'
spec.summary = 'mruby compiler library'
as_cxx_srcs = %w[codegen y.tab].map{|name| "#{dir}/core/#{name}.c"}
objs = Dir.glob("#{dir}/core/*.c").map do |src|
dst = src.pathmap("#{build_dir}/core/%n")
if build.cxx_exception_enabled? && as_cxx_srcs.include?(src)
build.compile_as_cxx(src, "#{dst}.cxx")
else
objfile(dst)
end
end
build.libmruby_core_objs << objs
lex_def = "#{dir}/core/lex.def"
# Parser
file "#{dir}/core/y.tab.c" => ["#{dir}/core/parse.y", lex_def] do |t|
yacc.run t.name, t.prerequisites.first
replace_line_directive(t.name)
end
# Lexical analyzer
file lex_def => "#{dir}/core/keywords" do |t|
gperf.run t.name, t.prerequisites.first
replace_line_directive(t.name)
end
def replace_line_directive(path)
content = File.read(path).gsub(%r{
^\#line\s+\d+\s+"\K.*$ | # #line directive
^/\*\s+Command-line:.*\s\K\S+(?=\s+\*/$) # header comment in lex.def
}x, &:relative_path)
File.write(path, content)
end
end
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