Class: Gobstones::Parser::TreetopParser

Inherits:
Object
  • Object
show all
Defined in:
lib/gobstones/parser/treetop_parser.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ TreetopParser

Returns a new instance of TreetopParser.



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# File 'lib/gobstones/parser/treetop_parser.rb', line 8

def initialize
  Treetop.load grammar_file
  @parser = GobstonesParser.new
end

Instance Method Details

#failure_column ⇒ Object 



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# File 'lib/gobstones/parser/treetop_parser.rb', line 29

def failure_column
  @parser.failure_column
end

#failure_line ⇒ Object 



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# File 'lib/gobstones/parser/treetop_parser.rb', line 25

def failure_line
  @parser.failure_line
end

#failure_reason ⇒ Object 



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# File 'lib/gobstones/parser/treetop_parser.rb', line 21

def failure_reason
  @parser.failure_reason
end

#parse(code) ⇒ Object

Raises:



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# File 'lib/gobstones/parser/treetop_parser.rb', line 13

def parse(code)
  code_without_comments = remove_comments_from(code)
  result = @parser.parse(code_without_comments)
  raise ParseError.new(self, code_without_comments) if result.nil?

  result.value
end

#remove_comments_from(code) ⇒ Object 



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# File 'lib/gobstones/parser/treetop_parser.rb', line 33

def remove_comments_from(code)
  code.
    gsub(single_line_c_style_comments_regex, '').
    gsub(single_line_haskell_style_comments_regex, '').
    gsub(multi_line_c_style_comments_regex, '').
    gsub(multi_line_haskell_style_comments_regex, '')
end