abstract class CSV2::Lexer

• CSV2::Lexer
• Reference
• Object

Overview

A CSV lexer lets you consume a CSV token by token. You can use this to efficiently parse a CSV without the need to allocate intermediate arrays.

require "csv"

lexer = CSV2::Lexer.new "one,two\nthree"
lexer.next_token # => CSV2::Token(@kind=Cell, @value="one")
lexer.next_token # => CSV2::Token(@kind=Cell, @value="two")
lexer.next_token # => CSV2::Token(@kind=Newline, @value="two")
lexer.next_token # => CSV2::Token(@kind=Cell, @value="three")
lexer.next_token # => CSV2::Token(@kind=Eof, @value="three")

Defined in:

csv/lexer.cr

Constructors

• .new(string : String, separator = DEFAULT_SEPARATOR, quote_char = DEFAULT_QUOTE_CHAR)

  Creates a CSV lexer from a String.

• .new(io : IO, separator = DEFAULT_SEPARATOR, quote_char = DEFAULT_QUOTE_CHAR)

  Creates a CSV lexer from an IO.

Instance Method Summary

• #next_token

  Returns the next Token in this CSV.

• #quote_char : Char
• #rewind

  Rewinds this lexer to its beginning.

• #separator : Char
• #token : Token

  Returns the current Token.

Constructor Detail

Instance Method Detail