Module: Odin::Parsing::ValueParser

Defined in:
lib/odin/parsing/value_parser.rb

Constant Summary collapse

RE_DATE = 
/\A(\d{4})-(\d{2})-(\d{2})\z/.freeze
RE_TIMESTAMP_DATE = 
/\A(\d{4})-(\d{2})-(\d{2})T/.freeze
RE_ISO_TS =

Fast ISO 8601 timestamp parser: 2024-01-15T10:30:00Z or with offset

/\A(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(?:\.(\d+))?(Z|([+-]\d{2}):?(\d{2}))?\z/.freeze

Class Method Summary collapse

Class Method Details

.fast_parse_timestamp(raw) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 295

def fast_parse_timestamp(raw)
  m = RE_ISO_TS.match(raw)
  return nil unless m
  y, mo, d = m[1].to_i, m[2].to_i, m[3].to_i
  h, mi, s = m[4].to_i, m[5].to_i, m[6].to_i
  frac = m[7]
  if m[8] == "Z" || m[8].nil?
    offset = "+00:00"
  else
    offset = "#{m[9]}:#{m[10]}"
  end
  sec = frac ? Rational("#{s}.#{frac}".to_r) : s
  DateTime.new(y, mo, d, h, mi, sec, offset)
rescue
  nil
end

.leap_year?(year) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/odin/parsing/value_parser.rb', line 268

def leap_year?(year)
  (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)
end

.needs_raw?(raw, val) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/odin/parsing/value_parser.rb', line 312

def needs_raw?(raw, val)
  # Store raw when float representation differs significantly
  formatted = val == val.to_i && !raw.include?(".") && !raw.include?("e") && !raw.include?("E") ? val.to_i.to_s : val.to_s
  # If the raw string has more precision info than the float
  raw.gsub(/\.?0+\z/, "") != formatted.gsub(/\.?0+\z/, "")
rescue
  true
end

.parse_binary(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 207

def parse_binary(token)
  raw = token.value

  # Handle empty binary
  if raw.nil? || raw.empty?
    return Types::OdinBinary.new("", algorithm: nil)
  end

  algorithm = nil
  base64_data = raw

  # Check for algorithm prefix (identifier:base64)
  if raw =~ /\A([a-zA-Z][a-zA-Z0-9]*):(.*)$/
    algorithm = $1
    base64_data = $2
  end

  # Validate base64 characters
  validate_base64!(base64_data, token) unless base64_data.empty?

  # Decode
  begin
    decoded = Base64.strict_decode64(base64_data) unless base64_data.empty?
  rescue ArgumentError
    # Try lenient decode
    decoded = Base64.decode64(base64_data)
  end

  Types::OdinBinary.new(base64_data, algorithm: algorithm)
end

.parse_boolean(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 137

def parse_boolean(token)
  case token.value
  when "true"  then Types::TRUE_VAL
  when "false" then Types::FALSE_VAL
  else
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::INVALID_TYPE_PREFIX,
      token.line, token.column,
      "Invalid boolean: #{token.value}"
    )
  end
end

.parse_currency(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 79

def parse_currency(token)
  raw = token.value
  if raw.nil? || raw.empty?
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::INVALID_TYPE_PREFIX,
      token.line, token.column,
      "Invalid numeric format"
    )
  end

  currency_code = nil
  numeric_part = raw

  if raw.include?(":")
    parts = raw.split(":", 2)
    numeric_part = parts[0]
    currency_code = parts[1].upcase unless parts[1].empty?
  end

  bd = BigDecimal(numeric_part)
  # Count decimal places
  if numeric_part.include?(".")
    e_pos = numeric_part.downcase.index("e")
    check_part = e_pos ? numeric_part[0...e_pos] : numeric_part
    decimal_str = check_part.split(".")[1] || ""
    dp = [decimal_str.length, 2].max
  else
    dp = 2
  end

  Types::OdinCurrency.new(bd, currency_code: currency_code, decimal_places: dp, raw: numeric_part)
rescue ArgumentError
  raise Errors::ParseError.new(
    Errors::ParseErrorCode::INVALID_TYPE_PREFIX,
    token.line, token.column,
    "Invalid currency format: #{raw}"
  )
end

.parse_date(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 153

def parse_date(token)
  raw = token.value
  validate_date!(raw, token)
  m = RE_DATE.match(raw)
  if m
    d = Date.new(m[1].to_i, m[2].to_i, m[3].to_i)
  else
    d = Date.parse(raw)
  end
  Types::OdinDate.new(d, raw: raw)
rescue Date::Error, ArgumentError => e
  raise Errors::ParseError.new(
    Errors::ParseErrorCode::UNEXPECTED_CHARACTER,
    token.line, token.column,
    "Invalid date: #{raw}"
  )
end

.parse_duration(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 194

def parse_duration(token)
  raw = token.value
  # Basic validation: must start with P
  unless raw.start_with?("P")
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::BARE_STRING_NOT_ALLOWED,
      token.line, token.column,
      "Invalid duration format: #{raw}"
    )
  end
  Types::OdinDuration.new(raw)
end

.parse_integer(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 58

def parse_integer(token)
  raw = token.value
  if raw.nil? || raw.empty?
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::INVALID_TYPE_PREFIX,
      token.line, token.column,
      "Invalid numeric format"
    )
  end
  val = Integer(Float(raw))
  # Beyond JS safe integer range, store raw
  safe = val.abs <= 9_007_199_254_740_991
  Types::OdinInteger.new(val, raw: safe && raw.length <= 15 ? nil : raw)
rescue ArgumentError
  raise Errors::ParseError.new(
    Errors::ParseErrorCode::INVALID_TYPE_PREFIX,
    token.line, token.column,
    "Invalid integer format: #{raw}"
  )
end

.parse_number(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 37

def parse_number(token)
  raw = token.value
  if raw.nil? || raw.empty?
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::INVALID_TYPE_PREFIX,
      token.line, token.column,
      "Invalid numeric format"
    )
  end
  val = Float(raw)
  # Store raw if high precision (> 15 significant digits)
  store_raw = raw.length > 15 || needs_raw?(raw, val)
  Types::OdinNumber.new(val, raw: store_raw ? raw : nil)
rescue ArgumentError
  raise Errors::ParseError.new(
    Errors::ParseErrorCode::INVALID_TYPE_PREFIX,
    token.line, token.column,
    "Invalid numeric format: #{raw}"
  )
end

.parse_percent(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 118

def parse_percent(token)
  raw = token.value
  if raw.nil? || raw.empty?
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::INVALID_TYPE_PREFIX,
      token.line, token.column,
      "Invalid numeric format"
    )
  end
  val = Float(raw)
  Types::OdinPercent.new(val, raw: raw)
rescue ArgumentError
  raise Errors::ParseError.new(
    Errors::ParseErrorCode::INVALID_TYPE_PREFIX,
    token.line, token.column,
    "Invalid percent format: #{raw}"
  )
end

.parse_time(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 190

def parse_time(token)
  Types::OdinTime.new(token.value)
end

.parse_timestamp(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 171

def parse_timestamp(token)
  raw = token.value
  # Validate the date part
  m = RE_TIMESTAMP_DATE.match(raw)
  if m
    validate_date!("#{m[1]}-#{m[2]}-#{m[3]}", token)
  end
  # DateTime.new is much faster than DateTime.parse
  # Try fast path for ISO 8601 timestamps
  dt = fast_parse_timestamp(raw) || DateTime.parse(raw)
  Types::OdinTimestamp.new(dt, raw: raw)
rescue Date::Error, ArgumentError
  raise Errors::ParseError.new(
    Errors::ParseErrorCode::UNEXPECTED_CHARACTER,
    token.line, token.column,
    "Invalid timestamp: #{raw}"
  )
end

.parse_value(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 12

def parse_value(token)
  case token.type
  when TokenType::STRING    then Types::OdinString.new(token.value)
  when TokenType::NUMBER    then parse_number(token)
  when TokenType::INTEGER   then parse_integer(token)
  when TokenType::CURRENCY  then parse_currency(token)
  when TokenType::PERCENT   then parse_percent(token)
  when TokenType::BOOLEAN   then parse_boolean(token)
  when TokenType::NULL      then Types::NULL
  when TokenType::DATE      then parse_date(token)
  when TokenType::TIMESTAMP then parse_timestamp(token)
  when TokenType::TIME      then parse_time(token)
  when TokenType::DURATION  then parse_duration(token)
  when TokenType::REFERENCE then Types::OdinReference.new(token.value)
  when TokenType::BINARY    then parse_binary(token)
  when TokenType::VERB      then parse_verb_name(token)
  else
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::UNEXPECTED_CHARACTER,
      token.line, token.column,
      "Unexpected token type: #{token.type}"
    )
  end
end

.parse_verb_name(token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 238

def parse_verb_name(token)
  name = token.value
  is_custom = name.start_with?("&")
  verb_name = is_custom ? name[1..] : name
  # Args will be filled in by the parser
  Types::OdinVerbExpression.new(verb_name, is_custom: is_custom, args: [])
end

.validate_base64!(data, token) ⇒ Object 



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# File 'lib/odin/parsing/value_parser.rb', line 272

def validate_base64!(data, token)
  # Check for invalid characters
  unless data.match?(/\A[A-Za-z0-9+\/]*=*\z/)
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::UNEXPECTED_CHARACTER,
      token.line, token.column,
      "Invalid Base64 character"
    )
  end

  # Check padding position - padding only at end
  if data =~ /=/ && data !~ /\A[A-Za-z0-9+\/]*={0,2}\z/
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::UNEXPECTED_CHARACTER,
      token.line, token.column,
      "Invalid Base64 padding"
    )
  end
end

.validate_date!(date_str, token) ⇒ Object

— helpers —



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# File 'lib/odin/parsing/value_parser.rb', line 248

def validate_date!(date_str, token)
  return unless date_str =~ /\A(\d{4})-(\d{2})-(\d{2})\z/
  year, month, day = $1.to_i, $2.to_i, $3.to_i
  return if month < 1 || month > 12

  max_days = case month
             when 1, 3, 5, 7, 8, 10, 12 then 31
             when 4, 6, 9, 11 then 30
             when 2 then leap_year?(year) ? 29 : 28
             end

  if day > max_days || day < 1
    raise Errors::ParseError.new(
      Errors::ParseErrorCode::UNEXPECTED_CHARACTER,
      token.line, token.column,
      "Invalid date: #{date_str}"
    )
  end
end