Module: Sloprb::Typoeater

Defined in:
lib/sloprb/typoeater.rb

Constant Summary collapse

SYSTEM_PROMPT = 
<<~PROMPT
  You are a Ruby syntax error fixer. You will be given a Ruby source file that has a syntax error, along with the error message.
  Your job is to fix the syntax error and return the corrected source file.

  Rules:
  - Return ONLY the complete corrected Ruby source file
  - Do not include any explanation, comments about the fix, or markdown formatting
  - Do not change any logic or behavior — only fix the syntax error
  - Preserve all existing comments, whitespace style, and formatting
PROMPT

Class Method Summary collapse

Class Method Details

.call(path, error_context, chat: nil) ⇒ Object 



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# File 'lib/sloprb/typoeater.rb', line 19

def call(path, error_context, chat: nil)
  chat ||= default_chat

  source = File.read(path)

  user_prompt = <<~PROMPT
    Here is the Ruby source file with a syntax error:

    ```ruby
    #{source}
    ```

    Syntax error:
    #{error_context}

    Return the complete corrected Ruby source file.
  PROMPT

  response = chat.with_instructions(SYSTEM_PROMPT).ask(user_prompt)
  corrected = strip_fences(response.content)
  corrected << "\n" unless corrected.end_with?("\n")

  result = Prism.parse(corrected)
  return if result.errors.any?

  corrected
rescue => e
  warn "[sloprb] failed to autocorrect #{path}: #{e.message}" if ENV["SLOPRB_DEBUG"]
  nil
end

.register_hook ⇒ Object 



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# File 'lib/sloprb/typoeater.rb', line 50

def register_hook
  require "require-hooks/setup"

  RequireHooks.source_transform do |path, source|
    result = Prism.parse_file(path)
    next unless result.errors.any?

    warn "[sloprb] invalid syntax in #{path}, fixing..."

    corrected = Typoeater.call(path, result.errors_format)
    # Let it fail through
    next unless corrected

    File.write(path, corrected)

    warn "[sloprb] auto-corrected syntax error in #{path}"

    corrected
  end
end