Class: Solidity::Parser

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(txt) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/solidity/parser.rb', line 12

def initialize( txt )
  @txt = txt
end

Class Method Details

.read(path) ⇒ Object 



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# File 'lib/solidity/parser.rb', line 5

def self.read( path )
   txt = read_text( path )
   new( txt )
end

Instance Method Details

#_quick_pass_one ⇒ Object 



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# File 'lib/solidity/parser.rb', line 20

def _quick_pass_one
  tree = []

  lex = Lexer.new( @txt )

  until lex.eos?
    case lex.peek
    when :comment  ## single or multi-line comment
        tree << [:comment, lex.next]
        ## note:  if next token is newline - slurp / ignore
        lex.next    if lex.peek == :nl
    when :pragma
         code = lex.scan_until( :';',
                                include: true )
          ## print "pragma:"
          ## pp code
          tree << [:pragma, code]
    when :contract
          code = lex.scan_until( :'{' )
          ## print "contract:"
          ## pp code
          tree << [:contract, code]
    when :abstract
          code = lex.scan_until( :'{' )
          ## print "abstract contract:"
          ## pp code
          tree << [:abstract_contract, code]
    when :library
          code = lex.scan_until( :'{' )
          ## print "library:"
          ## pp code
          tree << [:library, code]
    when :interface
          code = lex.scan_until( :'{' )
          ## print "interface:"
          ## pp code
          tree << [:interface, code]
    else
         ## slurp chunk ,that is, until newline or comment or tracked keyword
         last = tree[-1]
         if last.is_a?( String )
            last <<  lex.next   ## append lexeme to last chunk
         else
            tree << lex.next    ## start a new chunk
         end
    end
  end

  tree
end

#outline ⇒ Object 



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# File 'lib/solidity/parser.rb', line 73

def outline
   buf = String.new( '' )
   tree = _quick_pass_one

   tree.each do |node|
      if node.is_a?( Array )
         case node[0]
         when :contract           then  buf << node[1] << "\n"
         when :abstract_contract  then  buf << node[1] << "\n"
         when :interface          then  buf << node[1] << "\n"
         when :library            then  buf << node[1] << "\n"
         else
         end
      end
   end

   buf
end

#pragmas ⇒ Object 



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# File 'lib/solidity/parser.rb', line 92

def pragmas
   buf = String.new( '' )
   tree = _quick_pass_one

   tree.each do |node|
      if node.is_a?( Array )
         case node[0]
         when :pragma             then  buf << node[1] << "\n"
         end
      end
   end

   buf
end