Class: Opal::Vite::Compiler

Inherits:
Object
  • Object
show all
Defined in:
lib/opal/vite/compiler.rb

Defined Under Namespace

Classes: CompilationError

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Compiler

Returns a new instance of Compiler.



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# File 'lib/opal/vite/compiler.rb', line 10

def initialize(options = {})
  @options = options
  @config = options[:config] || Opal::Vite.config
  @include_concerns = options.fetch(:include_concerns, true)
end

Class Method Details

.runtime_code ⇒ Object

Get the Opal runtime code



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# File 'lib/opal/vite/compiler.rb', line 70

def self.runtime_code
  builder = Opal::Builder.new
  builder.build('opal')
  builder.to_s
end

Instance Method Details

#compile(source, file_path) ⇒ Object

Compile Ruby source code to JavaScript Returns a hash with :code, :map, and :dependencies



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# File 'lib/opal/vite/compiler.rb', line 18

def compile(source, file_path)
  begin
    # Use Opal::Builder and add the file's directory to load paths
    builder = Opal::Builder.new

    # Add the directory containing the file to load paths
    # This allows require statements to work relative to the file
    file_dir = File.dirname(File.expand_path(file_path))
    builder.append_paths(file_dir)

    # Also add parent directories for common patterns like 'lib/foo'
    parent_dir = File.dirname(file_dir)
    builder.append_paths(parent_dir)

    # Add gem paths from $LOAD_PATH so Opal can find gems
    add_gem_paths(builder)

    builder.build_str(source, file_path)

    result = {
      code: builder.to_s,
      dependencies: extract_dependencies(builder)
    }

    # Extract source map if enabled
    if @config.source_map_enabled
      begin
        source_map = extract_source_map(builder, file_path)
        result[:map] = source_map if source_map
      rescue => e
        # Source map extraction failed, log but don't fail compilation
        warn "Warning: Failed to extract source map for #{file_path}: #{e.message}" if ENV['DEBUG']
      end
    end

    result
  rescue StandardError => e
    raise CompilationError, "Failed to compile #{file_path}: #{e.message}\n#{e.backtrace.first(5).join("\n")}"
  end
end

#compile_file(file_path) ⇒ Object

Compile a Ruby file to JavaScript



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# File 'lib/opal/vite/compiler.rb', line 60

def compile_file(file_path)
  unless File.exist?(file_path)
    raise CompilationError, "File not found: #{file_path}"
  end

  source = File.read(file_path)
  compile(source, file_path)
end