Class: Canon::DiffFormatter::ByObject::JsonFormatter

Inherits:
BaseFormatter
  • Object
show all
Defined in:
lib/canon/diff_formatter/by_object/json_formatter.rb

Overview

JSON tree formatter for by-object diffs Handles Ruby object differences (hashes and arrays)

Direct Known Subclasses

YamlFormatter

Instance Attribute Summary

Attributes inherited from BaseFormatter

#use_color, #visualization_map

Instance Method Summary collapse

Methods inherited from BaseFormatter

for_format, #format, #initialize

Constructor Details

This class inherits a constructor from Canon::DiffFormatter::ByObject::BaseFormatter

Instance Method Details

#render_diff_node(key, diff, prefix, connector) ⇒ String

Render a diff node for JSON/Ruby object differences

Parameters:

  • key (String) —

    Hash key or array index

  • diff (Hash) —

    Difference information

  • prefix (String) —

    Tree prefix for indentation

  • connector (String) —

    Box-drawing connector character

Returns:

  • (String) —

    Formatted diff node



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# File 'lib/canon/diff_formatter/by_object/json_formatter.rb', line 18

def render_diff_node(key, diff, prefix, connector)
  output = []

  # Show full path if available (path in cyan, no color on tree structure)
  path_display = if diff[:path] && !diff[:path].empty?
                   colorize(diff[:path].to_s,
                            theme_color(:informative, :content) || :cyan, :bold)
                 else
                   colorize(key.to_s,
                            theme_color(:informative,
                                        :content) || :cyan)
                 end

  output << "#{prefix}#{connector}#{path_display}:"

  # Determine continuation for nested values
  continuation = connector.start_with?("├") ? "│   " : "    "
  value_prefix = prefix + continuation

  diff_code = diff[:diff_code] || diff[:diff1]

  case diff_code
  when Comparison::MISSING_HASH_KEY
    render_missing_key(diff, value_prefix, output)
  when Comparison::UNEQUAL_PRIMITIVES
    render_unequal_primitives(diff, value_prefix, output)
  when Comparison::UNEQUAL_HASH_VALUES
    render_unequal_hash_values(diff, value_prefix, output)
  when Comparison::UNEQUAL_ARRAY_ELEMENTS
    render_unequal_array_elements(diff, value_prefix, output)
  when Comparison::UNEQUAL_ARRAY_LENGTHS
    render_unequal_array_lengths(diff, value_prefix, output)
  when Comparison::UNEQUAL_TYPES
    render_unequal_types(diff, value_prefix, output)
  else
    # Fallback for unknown diff types
    render_fallback(diff, value_prefix, output)
  end

  output.join("\n")
end