Class: Synthra::REPL::EnhancedREPL

Inherits:
Object
  • Object
show all
Defined in:
lib/synthra/repl/enhanced_repl.rb

Overview

Enhanced REPL with history, completion, and export

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(registry: nil, verbose: false) ⇒ EnhancedREPL

Initialize the Enhanced REPL

Parameters:

  • registry (Registry) (defaults to: nil) —

    optional pre-loaded registry

  • verbose (Boolean) (defaults to: false) —

    enable verbose output



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# File 'lib/synthra/repl/enhanced_repl.rb', line 59

def initialize(registry: nil, verbose: false)
  @registry = registry || Registry.new
  @current_seed = nil
  @current_mode = :random
  @verbose = verbose
  @history = []
  @running = false
  setup_readline
end

Instance Attribute Details

#current_mode ⇒ Symbol (readonly)

Returns the current generation mode.

Returns:

  • (Symbol) —

    the current generation mode



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# File 'lib/synthra/repl/enhanced_repl.rb', line 49

def current_mode
  @current_mode
end

#current_seed ⇒ Integer? (readonly)

Returns the current seed for deterministic generation.

Returns:

  • (Integer, nil) —

    the current seed for deterministic generation



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# File 'lib/synthra/repl/enhanced_repl.rb', line 46

def current_seed
  @current_seed
end

#history ⇒ Array<String> (readonly)

Returns command history.

Returns:

  • (Array<String>) —

    command history



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# File 'lib/synthra/repl/enhanced_repl.rb', line 52

def history
  @history
end

#registry ⇒ Registry (readonly)

Returns the schema registry.

Returns:



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# File 'lib/synthra/repl/enhanced_repl.rb', line 43

def registry
  @registry
end

Instance Method Details

#build_generation_opts ⇒ Hash (private)

Build generation options hash

Returns:

  • (Hash) —

    generation options



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# File 'lib/synthra/repl/enhanced_repl.rb', line 600

def build_generation_opts
  opts = { registry: @registry, mode: @current_mode }
  opts[:seed] = @current_seed if @current_seed
  opts
end

#capture_output { ... } ⇒ String (private)

Capture stdout output from a block

Yields:

  • block to execute

Returns:

  • (String) —

    captured output



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# File 'lib/synthra/repl/enhanced_repl.rb', line 254

def capture_output
  original_stdout = $stdout
  $stdout = StringIO.new
  yield
  $stdout.string
ensure
  $stdout = original_stdout
end

#cmd_debug(name) ⇒ void (private)

This method returns an undefined value.

Debug generation

:nocov:

Parameters:

  • name (String) —

    schema name



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# File 'lib/synthra/repl/enhanced_repl.rb', line 433

def cmd_debug(name)
  schema = find_schema(name)
  return unless schema

  puts "šŸ› Debug Mode: Generating #{schema.name}"
  puts "=" * 60
  puts "Press Enter to continue after each field, 'q' to quit, 'c' to continue without pausing"
  puts

  field_index = 0
  generated_fields = {}
  auto_continue = false

  original_callback = Synthra.configuration.on_field_generated

  Synthra.configuration.on_field_generated = lambda do |schema_name, field_name, value, duration|
    field_index += 1
    generated_fields[field_name] = value

    puts "\n[Field #{field_index}] #{field_name}"
    puts "ā”€" * 60
    puts "Value: #{Formatter.format_value(value, 80)}"
    puts "Duration: #{duration}ms" if duration
    puts "Schema: #{schema_name}"

    # Show context state - all previously generated fields
    if generated_fields.size > 1
      puts "\nšŸ“‹ Context (#{generated_fields.size - 1} prior fields):"
      generated_fields.each do |k, v|
        next if k == field_name
        puts "    #{k.to_s.ljust(20)} = #{Formatter.format_value(v, 50)}"
      end
    end
    puts

    return if auto_continue

    loop do
      print "Press Enter to continue, 'q' to quit, 'c' to continue without pausing: "
      response = $stdin.gets&.strip&.downcase

      case response
      when "q", "quit"
        Synthra.configuration.on_field_generated = original_callback
        puts "Debug cancelled."
        throw :debug_cancelled
      when "c", "continue"
        auto_continue = true
        puts "Continuing without pausing..."
        break
      when "", nil
        break
      else
        puts "Invalid input. Press Enter, 'q', or 'c'."
      end
    end
  end

  begin
    catch(:debug_cancelled) do
      opts = build_generation_opts
      result = schema.generate(**opts)

      puts
      puts "=" * 60
      puts "āœ… Generation Complete!"
      puts "=" * 60
      puts
      puts "Final Record:"
      puts Formatter.table(result)
    end
  ensure
    Synthra.configuration.on_field_generated = original_callback
  end
end

#cmd_gen(name, count) ⇒ void (private)

This method returns an undefined value.

Generate records

Parameters:

  • name (String) —

    schema name

  • count (Integer) —

    number of records



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# File 'lib/synthra/repl/enhanced_repl.rb', line 391

def cmd_gen(name, count)
  schema = find_schema(name)
  return unless schema

  opts = build_generation_opts

  if count == 1
    record = schema.generate(**opts)
    puts JSON.pretty_generate(record)
  else
    records = schema.generate_many(count, **opts)
    puts JSON.pretty_generate(records)
  end
end

#cmd_help ⇒ void (private)

This method returns an undefined value.

Show help



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# File 'lib/synthra/repl/enhanced_repl.rb', line 568

def cmd_help
  puts "Commands: load, list (l), info, gen (g), table (t), debug (d), inspect (i), seed, mode, help (h), quit (q)"
  puts "Export: Use '> filename' to export output (e.g., 'gen User 100 > users.json')"
end

#cmd_info(name) ⇒ void (private)

This method returns an undefined value.

Show schema info

Parameters:

  • name (String) —

    schema name



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# File 'lib/synthra/repl/enhanced_repl.rb', line 371

def cmd_info(name)
  schema = find_schema(name)
  return unless schema

  puts "Schema: #{name}"
  puts "  Version: #{schema.version || 'not specified'}"
  puts "  Fields: #{schema.fields.length}"
  schema.fields.each do |f|
    optional = f.optional? ? "?" : ""
    nullable = f.nullable? ? " (nullable)" : ""
    puts "    - #{f.name}#{optional}: #{f.type_name}#{nullable}"
  end
end

#cmd_inspect(name) ⇒ void (private)

This method returns an undefined value.

Inspect generation

Parameters:

  • name (String) —

    schema name



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# File 'lib/synthra/repl/enhanced_repl.rb', line 515

def cmd_inspect(name)
  schema = find_schema(name)
  return unless schema

  opts = build_generation_opts
  record = schema.generate(**opts)

  puts "šŸ“Š Generated Record:"
  puts "=" * 60
  puts Formatter.table(record)
  puts
  puts "šŸ“‹ JSON Format:"
  puts JSON.pretty_generate(record)
  puts
  puts "šŸ“ Statistics:"
  puts "  Fields: #{record.keys.length}"
  puts "  Total size: #{JSON.generate(record).bytesize} bytes"
  record.each do |key, value|
    type = value.class.name
    size = case value
           when String then "#{value.bytesize} bytes"
           when Hash then "#{value.keys.length} keys"
           when Array then "#{value.length} items"
           else value.inspect.length.to_s + " chars"
           end
    puts "    #{key}: #{type} (#{size})"
  end
end

#cmd_list ⇒ void (private)

This method returns an undefined value.

List loaded schemas



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# File 'lib/synthra/repl/enhanced_repl.rb', line 353

def cmd_list
  if @registry.size == 0
    puts "No schemas loaded. Use 'load <path>' first."
  else
    puts "Loaded schemas:"
    @registry.schemas.each do |name, schema|
      version = schema.version ? " v#{schema.version}" : ""
      deprecated = schema.deprecated? ? " [DEPRECATED]" : ""
      puts "  - #{name}#{version}#{deprecated}"
    end
  end
end

#cmd_load(path) ⇒ void (private)

This method returns an undefined value.

Load schemas from path

Parameters:

  • path (String) —

    file or directory path



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# File 'lib/synthra/repl/enhanced_repl.rb', line 336

def cmd_load(path)
  if File.directory?(path)
    Dir.glob(File.join(path, "*.dsl")).each do |f|
      @registry.load_file(f, validate: false)
    end
  else
    @registry.load_file(path, validate: false)
  end
  puts "āœ… Loaded #{@registry.size} schema(s)"
rescue => e
  puts "āŒ Error: #{e.message}"
end

#cmd_mode(mode) ⇒ void (private)

This method returns an undefined value.

Set mode

Parameters:

  • mode (Symbol) —

    generation mode



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# File 'lib/synthra/repl/enhanced_repl.rb', line 559

def cmd_mode(mode)
  @current_mode = mode
  puts "āœ… Mode set to #{@current_mode}"
end

#cmd_quit ⇒ void (private)

This method returns an undefined value.

Quit REPL



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# File 'lib/synthra/repl/enhanced_repl.rb', line 577

def cmd_quit
  puts "Goodbye!"
  stop
end

#cmd_seed(seed) ⇒ void (private)

This method returns an undefined value.

Set seed

Parameters:

  • seed (Integer) —

    seed value



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# File 'lib/synthra/repl/enhanced_repl.rb', line 549

def cmd_seed(seed)
  @current_seed = seed
  puts "āœ… Seed set to #{@current_seed}"
end

#cmd_table(name, count) ⇒ void (private)

This method returns an undefined value.

Generate table output

Parameters:

  • name (String) —

    schema name

  • count (Integer) —

    number of records



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# File 'lib/synthra/repl/enhanced_repl.rb', line 412

def cmd_table(name, count)
  schema = find_schema(name)
  return unless schema

  opts = build_generation_opts

  if count == 1
    record = schema.generate(**opts)
    puts Formatter.table(record)
  else
    records = schema.generate_many(count, **opts)
    puts Formatter.table(records)
  end
end

#completions_for(input) ⇒ Array<String> (private)

Get completions for the current input

Parameters:

  • input (String) —

    partial input

Returns:

  • (Array<String>) —

    matching completions



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# File 'lib/synthra/repl/enhanced_repl.rb', line 161

def completions_for(input)
  # Get the line buffer to understand context
  line = Readline.line_buffer rescue input

  if line.nil? || line.strip.empty? || !line.include?(" ")
    # Complete commands
    all_commands = COMMANDS + COMMAND_ALIASES.keys
    all_commands.select { |c| c.start_with?(input.downcase) }
  else
    # Complete schema names for commands that take them
    command = line.split.first&.downcase
    if %w[gen table debug inspect info g t d i].include?(command)
      @registry.names.select { |name| name.downcase.start_with?(input.downcase) }
    else
      []
    end
  end
end

#execute_command(input) ⇒ void (private)

This method returns an undefined value.

Execute a single command

Parameters:

  • input (String) —

    command input



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# File 'lib/synthra/repl/enhanced_repl.rb', line 268

def execute_command(input)
  return if input.nil? || input.strip.empty?

  # Expand aliases
  parts = input.split(/\s+/, 2)
  command = parts[0]&.downcase
  rest = parts[1]

  return if command.nil? || command.empty?

  # Check for alias
  if COMMAND_ALIASES.key?(command)
    command = COMMAND_ALIASES[command]
  end

  # Reconstruct full input
  full_input = rest ? "#{command} #{rest}" : command

  case full_input
  when /^load\s+(.+)$/
    cmd_load($1.strip)
  when "list", "l"
    cmd_list
  when /^info\s+(\w+)$/
    cmd_info($1)
  when /^gen\s+(\w+)(?:\s+(\d+))?$/
    cmd_gen($1, ($2 || "1").to_i)
  when /^table\s+(\w+)(?:\s+(\d+))?$/
    cmd_table($1, ($2 || "1").to_i)
  when /^debug\s+(\w+)$/
    cmd_debug($1)
  when /^inspect\s+(\w+)$/
    cmd_inspect($1)
  when /^seed\s+(\d+)$/
    cmd_seed($1.to_i)
  when /^mode\s+(random|edge|invalid|hostile|mixed)$/
    cmd_mode($1.to_sym)
  when "help", "h"
    cmd_help
  when "quit", "exit", "q"
    cmd_quit
  else
    suggest_command(command)
  end
end

#execute_with_export(command, filename) ⇒ void (private)

This method returns an undefined value.

Execute command with export to file

Parameters:

  • command (String) —

    the command to execute

  • filename (String) —

    the file to export to



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# File 'lib/synthra/repl/enhanced_repl.rb', line 237

def execute_with_export(command, filename)
  # Capture output
  output = capture_output { execute_command(command) }

  if output && !output.strip.empty?
    File.write(filename, output)
    puts "āœ… Exported to #{filename} (#{output.bytesize} bytes)"
  else
    puts "āŒ No output to export"
  end
end

#find_schema(name) ⇒ Schema? (private)

Find schema by name with suggestions

Parameters:

  • name (String) —

    schema name

Returns:

  • (Schema, nil) —

    schema or nil if not found



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# File 'lib/synthra/repl/enhanced_repl.rb', line 587

def find_schema(name)
  @registry.schema(name)
rescue KeyError
  suggestions = Utils::StringDistance.similar_strings(name, @registry.names, max_distance: 3)
  puts "āŒ Schema '#{name}' not found"
  puts Utils::StringDistance.format_suggestions(suggestions) if suggestions.any?
  nil
end

#print_welcome ⇒ void (private)

This method returns an undefined value.

Print welcome message

:nocov:



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# File 'lib/synthra/repl/enhanced_repl.rb', line 200

def print_welcome
  puts "=" * 60
  puts "Synthra Interactive REPL (Enhanced)"
  puts "=" * 60
  puts
  puts "Commands (aliases in parentheses):"
  puts "  load <path>           - Load schemas from file/directory"
  puts "  list (l)              - List loaded schemas"
  puts "  info <Schema>         - Show schema details"
  puts "  gen <Schema> [N] (g)  - Generate records (JSON)"
  puts "  table <Schema> [N] (t)- Generate records (table view)"
  puts "  debug <Schema> (d)    - Step-through debug generation"
  puts "  inspect <Schema> (i)  - Generate and show detailed inspection"
  puts "  seed <number>         - Set seed for deterministic output"
  puts "  mode <mode>           - Set mode (random/edge/invalid/hostile/mixed)"
  puts "  help (h)              - Show this help"
  puts "  quit/exit (q)         - Exit REPL"
  puts
  puts "Export to file:"
  puts "  gen User 100 > users.json    - Export to JSON file"
  puts "  table User 10 > users.txt    - Export table to text file"
  puts
  if @readline_available
    puts "Tab completion and command history enabled!"
  else
    puts "Install 'readline' gem for history and tab completion"
  end
  puts
end

#process_command(input) ⇒ void

This method returns an undefined value.

Process a single command

Parameters:

  • input (String) —

    the command input



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# File 'lib/synthra/repl/enhanced_repl.rb', line 106

def process_command(input)
  # Check for export redirect syntax: command > filename
  if input.include?(" > ")
    command_part, filename = input.split(" > ", 2)
    execute_with_export(command_part.strip, filename.strip)
  else
    execute_command(input)
  end
rescue => e
  puts "āŒ Error: #{e.message}"
  puts e.backtrace.first(3).join("\n") if @verbose
end

#read_input ⇒ String? (private)

Read input from user

:nocov:

Returns:

  • (String, nil) —

    user input or nil on EOF



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# File 'lib/synthra/repl/enhanced_repl.rb', line 185

def read_input
  if @readline_available
    Readline.readline("synthra> ", true)
  else
    print "synthra> "
    $stdin.gets
  end
end

#readline_available? ⇒ Boolean

Check if readline is available

Returns:

  • (Boolean) —

    true if readline is available



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# File 'lib/synthra/repl/enhanced_repl.rb', line 73

def readline_available?
  @readline_available
end

#run ⇒ Integer

Run the REPL

:nocov:

Returns:

  • (Integer) —

    exit code



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# File 'lib/synthra/repl/enhanced_repl.rb', line 82

def run
  @running = true
  print_welcome

  while @running
    input = read_input
    break if input.nil?

    input = input.strip
    next if input.empty?

    @history << input
    process_command(input)
  end

  CLI::EXIT_SUCCESS
end

#setup_completion ⇒ void (private)

This method returns an undefined value.

Set up tab completion



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# File 'lib/synthra/repl/enhanced_repl.rb', line 147

def setup_completion
  return unless @readline_available

  Readline.completion_proc = proc do |input|
    completions_for(input)
  end
  Readline.completion_append_character = " "
end

#setup_readline ⇒ void (private)

This method returns an undefined value.

Set up readline if available



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# File 'lib/synthra/repl/enhanced_repl.rb', line 133

def setup_readline
  begin
    require "readline"
    @readline_available = true
    setup_completion
  rescue LoadError
    @readline_available = false
  end
end

#stop ⇒ void

This method returns an undefined value.

Stop the REPL



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# File 'lib/synthra/repl/enhanced_repl.rb', line 123

def stop
  @running = false
end

#suggest_command(unknown) ⇒ void (private)

This method returns an undefined value.

Suggest similar command for typos

Parameters:

  • unknown (String) —

    unknown command



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# File 'lib/synthra/repl/enhanced_repl.rb', line 319

def suggest_command(unknown)
  all_commands = COMMANDS + COMMAND_ALIASES.keys
  suggestions = Utils::StringDistance.similar_strings(unknown, all_commands, max_distance: 2)

  if suggestions.any?
    puts "Unknown command: #{unknown}"
    puts Utils::StringDistance.format_suggestions(suggestions)
  else
    puts "Unknown command: #{unknown}. Type 'help' for available commands."
  end
end