Class: Rouge::Reader

Inherits:
Object
  • Object
show all
Defined in:
lib/rouge/reader.rb

Defined Under Namespace

Classes: EOFError, EndOfDataError, NumberFormatError, UnexpectedCharacterError

Constant Summary collapse

@@gensym_counter = 
0

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ns, input) ⇒ Reader

Returns a new instance of Reader.



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# File 'lib/rouge/reader.rb', line 14

def initialize(ns, input)
  @ns = ns
  @src = input
  @n = 0
  @gensyms = []
end

Instance Attribute Details

#ns ⇒ Object

Returns the value of attribute ns.



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# File 'lib/rouge/reader.rb', line 10

def ns
  @ns
end

Instance Method Details

#lex ⇒ Object 



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# File 'lib/rouge/reader.rb', line 21

def lex
  case peek
  when MAYBE_NUMBER
    number
  when /:/
    keyword
  when /"/
    string
  when /\(/
    Rouge::Seq::Cons[*list(')')]
  when /\[/
    list ']'
  when /#/
    dispatch
  when SYMBOL
    # SYMBOL after \[ and #, because it includes both
    symbol_or_number
  when /{/
    map
  when /'/
    quotation
  when /`/
    syntaxquotation
  when /~/
    dequotation
  when /\^/
    metadata
  when /@/
    deref
  when nil
    reader_raise EOFError, "in #lex"
  else
    reader_raise UnexpectedCharacterError, "#{peek.inspect} in #lex"
  end
end