Class: ZOMG::IDL::Parser

Inherits:
Lexer
  • Object
show all
Defined in:
lib/zomg/idl/parser.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/zomg/idl/parser.rb', line 14

def initialize
  @scanner = Scanner.new
  @yydebug = false
end

Class Method Details

.parse(string) ⇒ Object 



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# File 'lib/zomg/idl/parser.rb', line 9

def parse(string)
  new.parse(string)
end

.parse_file(filename) ⇒ Object 



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# File 'lib/zomg/idl/parser.rb', line 5

def parse_file(filename)
  new.parse_file(filename)
end

Instance Method Details

#next_token ⇒ Object 



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# File 'lib/zomg/idl/parser.rb', line 38

def next_token
  token = @scanner.next_token
  return [false, false] unless token
  token = next_token() if token[0] == :T_COMMENT
  token = next_token() if token[0] == :T_PREPROCESSOR
  token = next_token() if token[0] == :T_PRAGMA
  token
end

#on_error(error_token_id, error_value, value_stack) ⇒ Object 



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# File 'lib/zomg/idl/parser.rb', line 47

def on_error(error_token_id, error_value, value_stack)
  puts token_to_str(error_token_id)
  puts error_value
  p value_stack.last
end

#parse(contents) ⇒ Object

Parse an IDL string



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# File 'lib/zomg/idl/parser.rb', line 20

def parse(contents)
  @scanner.scan_evaluate(contents)
  do_parse
end

#parse_file(filename) ⇒ Object 



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# File 'lib/zomg/idl/parser.rb', line 25

def parse_file(filename)
  contents = File.read(filename)
  if contents =~ /^\s*#/
    dir = File.dirname(File.expand_path(filename))
    contents = IO.popen("gcc -E -I #{dir} -I . -", 'w+') { |io|
      io.write(contents)
      io.close_write
      io.read
    }
  end
  parse(contents)
end