Module: FastCov::Compiler

Defined in:
lib/fast_cov/compiler.rb

Constant Summary collapse

EXT_DIR = 
File.expand_path("../../ext/fast_cov", __dir__)
LIB_DIR =

lib/

File.expand_path("..", __dir__)
FAST_COV_DIR =

lib/fast_cov/

File.expand_path(".", __dir__)

Class Method Summary collapse

Class Method Details

.clean_ext_dir! ⇒ Object 



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# File 'lib/fast_cov/compiler.rb', line 25

def self.clean_ext_dir!
  # Clean stale build artifacts to prevent issues when switching Ruby versions
  FileUtils.rm_f(Dir.glob(File.join(EXT_DIR, "*.o")))
  FileUtils.rm_f(Dir.glob(File.join(EXT_DIR, "*.bundle")))
  FileUtils.rm_f(Dir.glob(File.join(EXT_DIR, "*.so")))
  FileUtils.rm_f(File.join(EXT_DIR, "Makefile"))
  FileUtils.rm_f(File.join(EXT_DIR, "mkmf.log"))
  FileUtils.rm_rf(Dir.glob(File.join(EXT_DIR, "*.dSYM")))
end

.compile! ⇒ Object 



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# File 'lib/fast_cov/compiler.rb', line 13

def self.compile!
  clean_ext_dir!

  Dir.chdir(EXT_DIR) do
    system(RbConfig.ruby, "extconf.rb") || raise("FastCov: extconf.rb failed")
    system("make") || raise("FastCov: make failed")
    system("make install sitearchdir=#{LIB_DIR} sitelibdir=#{LIB_DIR}") || raise("FastCov: make install failed")
  end

  write_digest
end

.digest_path ⇒ Object 



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# File 'lib/fast_cov/compiler.rb', line 54

def self.digest_path
  # Keep version-specific so we recompile when switching Ruby versions
  File.join(FAST_COV_DIR, ".source_digest.#{RUBY_VERSION}")
end

.extension_exists? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fast_cov/compiler.rb', line 44

def self.extension_exists?
  Dir.glob(File.join(FAST_COV_DIR, "fast_cov.#{RUBY_VERSION}.{bundle,so}")).any?
end

.read_digest ⇒ Object 



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# File 'lib/fast_cov/compiler.rb', line 63

def self.read_digest
  File.read(digest_path).strip
rescue Errno::ENOENT
  nil
end

.source_digest ⇒ Object 



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# File 'lib/fast_cov/compiler.rb', line 48

def self.source_digest
  files = Dir.glob(File.join(EXT_DIR, "*.{c,h,rb}")).sort
  combined = files.map { |f| Digest::MD5.file(f).hexdigest }.join
  Digest::MD5.hexdigest(combined)
end

.stale? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fast_cov/compiler.rb', line 35

def self.stale?
  return true unless extension_exists?

  stored = read_digest
  return true unless stored

  stored != source_digest
end

.write_digest ⇒ Object 



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# File 'lib/fast_cov/compiler.rb', line 59

def self.write_digest
  File.write(digest_path, source_digest)
end