Class: LydownParser

Inherits:
Object
  • Object
show all
Defined in:
lib/lydown/parsing.rb

Overview

Treetop.load ‘lydown/parsing/lydown’

Class Method Summary collapse

Class Method Details

.format_parser_error(source, parser, opts) ⇒ Object 



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# File 'lib/lydown/parsing.rb', line 22

def self.format_parser_error(source, parser, opts)
  msg = opts[:source_filename] ? "#{opts[:source_filename]}: " : ""
  if opts[:nice_error]
    msg << "Unexpected character at line #{parser.failure_line} column #{parser.failure_column}:\n"
  else
    msg << "#{parser.failure_reason}:\n"
  end
  msg << "  #{source.lines[parser.failure_line - 1].chomp}\n #{' ' * parser.failure_column}^"

  msg
end

.parse(source, opts = {}) ⇒ Object 



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# File 'lib/lydown/parsing.rb', line 10

def self.parse(source, opts = {})
  parser = self.new
  ast = parser.parse(source)
  unless ast
    error_msg = format_parser_error(source, parser, opts)
    STDERR.puts error_msg
    raise LydownError, error_msg
  else
    ast.to_stream
  end
end