Module: Ruby2CExtension::Parser

Defined in:
lib/ruby2cext/parser.rb

Overview

not really a parser, uses rubynode

Class Method Summary collapse

Class Method Details

.parse_string(str, file_name = "(parse)") ⇒ Object 



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# File 'lib/ruby2cext/parser.rb', line 8

def self.parse_string(str, file_name = "(parse)")
  res = {}
  # for the first parsing use original str, because it doesn't matter
  # for BEGIN stuff and we get better exceptions this way.
  if (tmp = str.parse_begin_to_nodes(file_name, 1))
    res[:begin] = tmp
  end
  # now wrap str in a class scope and strip the class node of
  # afterwards, to get a clean scope in the result. src should
  # not have syntax errors if str didn't.
  src = "class Object\n#{str}\nend"
  begin
    old_verb = $VERBOSE
    # turn warnings of here to avoid the repetition of parse warnings
    $VERBOSE = nil
    if (tmp = src.parse_to_nodes(file_name, 0))
      tmp = tmp.nd_next.nd_body
      if tmp.type == :scope && tmp.nd_next
        res[:tree] = tmp
      end
    end
  ensure
    $VERBOSE = old_verb
  end
  res
end