Class: Treetop::Runtime::SyntaxNode

Inherits:
Object
  • Object
show all
Defined in:
lib/parser/edn-util.rb

Instance Method Summary collapse

Instance Method Details

#app_parser_level1_diagnostics(e, node) ⇒ Object 



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# File 'lib/parser/edn-util.rb', line 42

def app_parser_level1_diagnostics(e, node)
  outbytes = 0
  if $options.level                                # do manual level-shifting
    input = node.input
    ol1pos = l1pos = node.interval.begin
    while outbytes <= e.position
      outbytes += 1
      ol1pos = l1pos
      c1 = input[l1pos]
      if c1 == "\\"           # escapable-s
        c2 = input[l1pos += 1]
        if c2 == "u"          # hexchar-s
          c3 = input[l1pos += 1]
          if c3 == "{"
            l1pos = input.index("}", l1pos)
          else
            if (input[l1pos, 4].to_i(16) & 0xFC00) == 0xD800 # high-surrogate
              l1pos += 6                                     # low-surrogate
            end
            l1pos += 3        # non-surrogate
          end
        end
      end
      l1pos += 1
    end
    intv = ol1pos...l1pos
  else
    intv = node.interval.end...(node.interval.end+1) # default: closing '
    node.elements.each_with_index do |el, i|
      outbytes += el.ast.size
      if outbytes > e.position
        intv = el.interval
        break
      end
    end
  end
  failure_index = intv.begin
  failure_line = node.input.line_of(failure_index)
  failure_column = node.input.column_of(failure_index)
  reason = "** Line #{failure_line}, column #{failure_column}:\n"
  if line = node.input.lines.to_a[failure_line - 1]
    reason << line
    reason << "\n#{'~' * (failure_column - 1)}#{'^' * intv.size}"
  end
  warn reason
end

#ast ⇒ Object 



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# File 'lib/parser/edn-util.rb', line 33

def ast
  fail "undefined_ast #{inspect}"
end

#ast1 ⇒ Object

devhack



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# File 'lib/parser/edn-util.rb', line 36

def ast1                      # devhack
  "#{inspect[10..20]}--#{text_value[0..15]}"
end

#hex_value ⇒ Object 



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# File 'lib/parser/edn-util.rb', line 39

def hex_value
  text_value.to_i(16)
end