Class: StrongJSON::ErrorReporter

Inherits:
Object
  • Object
show all
Defined in:
lib/strong_json/error_reporter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path:) ⇒ ErrorReporter

Returns a new instance of ErrorReporter.



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# File 'lib/strong_json/error_reporter.rb', line 6

def initialize(path:)
  @path = path
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/strong_json/error_reporter.rb', line 4

def path
  @path
end

Instance Method Details

#format ⇒ Object 



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# File 'lib/strong_json/error_reporter.rb', line 15

def format
  @string = ""

  format_trace(path: path)
  where = format_aliases(path: path, where: [])

  # @type var ty: Type::Enum<any>
  if (ty = _ = path.type).is_a?(Type::Enum)
    ty.types.each do |t|
      if (a = t.alias)
        where.push format_single_alias(a, t)
      end
    end
  end

  unless where.empty?
    @string << "\nWhere:\n"
    @string << where.map {|x| x.gsub(/^/, "  ") }.join("\n")
  end
end

#format_aliases(path:, where:) ⇒ Object 



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# File 'lib/strong_json/error_reporter.rb', line 55

def format_aliases(path:, where:)
  ty = path.type

  if (a = ty.alias)
    where << format_single_alias(a, ty)
  end

  if parent = path.parent
    format_aliases(path: parent[1], where: where)
  end

  where
end

#format_single_alias(name, type) ⇒ Object 



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# File 'lib/strong_json/error_reporter.rb', line 69

def format_single_alias(name, type)
  # @type const PrettyPrint: any
  PrettyPrint.format do |pp|
    pp.text(name.to_s)
    pp.text(" = ")
    pp.group do
      pretty(type, pp, expand_alias: true)
    end
  end
end

#format_trace(path:, index: 1) ⇒ Object 



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# File 'lib/strong_json/error_reporter.rb', line 36

def format_trace(path:, index: 1)
  @string << (" " * index)
  type_string = pretty_str(path.type)
  if parent = path.parent
    case parent[0]
    when Symbol
      @string << "\"#{parent[0]}\" expected to be #{type_string}\n"
    when Integer
      @string << "#{parent[0]} expected to be #{type_string}\n"
    else
      @string << "Expected to be #{type_string}\n"
    end

    format_trace(path: parent[1], index: index + 1)
  else
    @string << "$ expected to be #{type_string}\n"
  end
end

#pretty(type, pp, expand_alias: false) ⇒ Object 



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# File 'lib/strong_json/error_reporter.rb', line 87

def pretty(type, pp, expand_alias: false)
  if !expand_alias && type.alias
    pp.text type.alias.to_s
  else
    case type
    when Type::Object
      pp.group 0, "{", "}" do
        pp.nest(2) do
          pp.breakable(" ")
          type.fields.each.with_index do |pair, index|
            key, ty = pair
            pp.text "#{key.to_s.inspect}: "
            pretty(ty, pp)
            if index < type.fields.size-1
              pp.text ","
              pp.breakable(" ")
            end
          end
        end
        pp.breakable(" ")
      end
    when Type::Enum
      pp.group 0, "enum(", ")" do
        pp.nest(2) do
          pp.breakable("")
          type.types.each.with_index do |ty, index|
            pretty(ty, pp)
            if index < type.types.size - 1
              pp.text ","
              pp.breakable " "
            end
          end
        end
        pp.breakable("")
      end
    when Type::Optional
      pp.group 0, "optional(", ")" do
        pp.nest(2) do
          pp.breakable ""
          pretty(type.type, pp)
        end
        pp.breakable ""
      end
    when Type::Array
      pp.group 0, "array(", ")" do
        pp.nest(2) do
          pp.breakable ""
          pretty(type.type, pp)
        end
        pp.breakable ""
      end
    when Type::Base
      pp.text type.type.to_s
    else
      pp.text type.to_s
    end
  end
end

#pretty_str(type, expand_alias: false) ⇒ Object 



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# File 'lib/strong_json/error_reporter.rb', line 80

def pretty_str(type, expand_alias: false)
  # @type const PrettyPrint: any
  PrettyPrint.singleline_format do |pp|
    pretty(type, pp, expand_alias: expand_alias)
  end
end

#to_s ⇒ Object 



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# File 'lib/strong_json/error_reporter.rb', line 10

def to_s
  format() unless @string
  @string
end