Class: MVinl::Parser

Inherits:
Program
  • Object
show all
Defined in:
lib/mvinl/parser.rb

Overview

Generated parser class

Instance Method Summary collapse

Constructor Details

#initialize(lexer, context, debug: false) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/mvinl/parser.rb', line 13

def initialize(lexer, context, debug: false)
  @lexer = lexer
  @context = context
  @yydebug = debug
  @tokens = []
  @done = false
  super()
end

Instance Method Details

#enqueue_token(token) ⇒ Object 



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# File 'lib/mvinl/parser.rb', line 41

def enqueue_token(token)
  @tokens << token
end

#feed(input) ⇒ Object 



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# File 'lib/mvinl/parser.rb', line 29

def feed(input)
  @lexer.feed input
end

#finalize! ⇒ Object 



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# File 'lib/mvinl/parser.rb', line 45

def finalize!
  @done = true
end

#next_token ⇒ Object 



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# File 'lib/mvinl/parser.rb', line 33

def next_token
  if @tokens.empty?
    @lexer.next_token
  else
    @tokens.shift
  end
end

#parse ⇒ Object 



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# File 'lib/mvinl/parser.rb', line 22

def parse
  do_parse
rescue Racc::ParseError => e
  puts "Parsing error at #{@context.state[:lines]}: #{e.message}"
  nil
end

#parsing_done? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mvinl/parser.rb', line 49

def parsing_done?
  @done && @tokens.empty?
end