Class: SorbetView::Compiler::RubyGenerator

Inherits:
Object
  • Object
show all
Extended by:
T::Sig
Defined in:
lib/sorbet_view/compiler/ruby_generator.rb

Constant Summary collapse

LOCALS_PREFIX = 
'locals:'
LOCALS_SIG_PREFIX = 
'locals_sig:'

Instance Method Summary collapse

Instance Method Details

#_generate(segments:, context:, config:, component_mode: false) ⇒ Object 



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# File 'lib/sorbet_view/compiler/ruby_generator.rb', line 41

def _generate(segments:, context:, config:, component_mode: false)
  locals = T.let(nil, T.nilable(String))
  locals_sig = T.let(nil, T.nilable(String))
  code_segments = T.let([], T::Array[RubySegment])

  # Extract locals declarations from comments, collect code segments
  segments.each do |seg|
    if seg.type == :comment
      text = seg.code.strip
      if text.start_with?(LOCALS_PREFIX)
        locals = text.delete_prefix(LOCALS_PREFIX).strip
      elsif text.start_with?(LOCALS_SIG_PREFIX)
        locals_sig = text.delete_prefix(LOCALS_SIG_PREFIX).strip
      end
    else
      code_segments << seg
    end
  end

  lines = T.let([], T::Array[String])
  mapping_entries = T.let([], T::Array[SourceMap::MappingEntry])

  # Boilerplate header
  lines << "# typed: #{config.typed_level}"
  lines << '# generated by sorbet_view - do not edit'
  lines << "# source: #{context.template_path}"
  lines << ''
  lines << "class #{context.class_name}#{context.superclass_clause}"

  unless component_mode
    lines << '  extend T::Sig'
    context.includes.each { |inc| lines << "  include #{inc}" }
    lines << ''

    if config.extra_body.length > 0
      config.extra_body.each_line { |l| lines << "  #{l.chomp}" }
      lines << ''
    end

    lines << '  sig { returns(T::Hash[Symbol, T.untyped]) }'
    lines << '  def local_assigns = {}'
    lines << ''

    if locals_sig
      lines << "  #{locals_sig}"
    end
  end

  # Declare instance variables in initialize (avoids Sorbet 5005)
  resolved_ivars = resolve_ivar_types(code_segments, context, config, component_mode)
  unless resolved_ivars.empty? || component_mode
    lines << '  def initialize'
    resolved_ivars.each do |ivar, type|
      if type == 'NilClass'
        lines << "    #{ivar} = T.let(nil, NilClass)"
      else
        lines << "    #{ivar} = T.let(T.unsafe(nil), #{type})"
      end
    end
    lines << '  end'
    lines << ''
  end

  method_args = component_mode ? '' : (locals || '()')
  lines << "  def __sorbet_view_render#{method_args}"

  # Body: extracted Ruby code
  code_segments.each do |seg|
    seg_lines = seg.code.split("\n", -1)
    seg_lines = [seg.code] if seg_lines.empty?

    seg_lines.each_with_index do |code_line, i|
      ruby_line = lines.length
      stripped = code_line.strip

      next if stripped.empty? && i > 0 # skip trailing empty from split

      lines << "    #{stripped}"

      # Build mapping entry — for the first line we already advanced past
      # leading whitespace in the adapter; for subsequent lines, use the
      # actual indent of the source line so the template column matches.
      template_start_col = if i == 0
        seg.column
      else
        code_line.length - code_line.lstrip.length
      end

      mapping_entries << SourceMap::MappingEntry.new(
        template_range: SourceMap::Range.new(
          start: SourceMap::Position.new(line: seg.line + i, column: template_start_col),
          end_: SourceMap::Position.new(line: seg.line + i, column: template_start_col + stripped.length)
        ),
        ruby_range: SourceMap::Range.new(
          start: SourceMap::Position.new(line: ruby_line, column: 4),
          end_: SourceMap::Position.new(line: ruby_line, column: 4 + stripped.length)
        ),
        type: seg.type == :expression ? :expression : :code
      )
    end
  end

  lines << '  end'
  lines << 'end'
  lines << '' # trailing newline

  CompileResult.new(
    ruby_source: lines.join("\n"),
    source_map: SourceMap::SourceMap.new(
      template_path: context.template_path,
      ruby_path: context.ruby_path,
      entries: mapping_entries
    ),
    locals: locals,
    locals_sig: locals_sig
  )
end

#generate(segments:, context:, config:, component_mode: false) ⇒ Object 



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# File 'lib/sorbet_view/compiler/ruby_generator.rb', line 29

def generate(segments:, context:, config:, component_mode: false)
  return Perf.measure('generator.generate') { _generate(segments: segments, context: context, config: config, component_mode: component_mode) }
end

#invalidate_ivar_cache! ⇒ Object 



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# File 'lib/sorbet_view/compiler/ruby_generator.rb', line 160

def invalidate_ivar_cache!
  @ivar_mapping = nil
end