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Versions: 9
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Contents
require 'treetop'
require 'treetop/runtime'
require 'treetop/ruby_extensions'
module Cucumber
module Parser
module TreetopExt
FILE_LINE_PATTERN = /^([\w\W]*?):([\d:]+)$/
# Parses a file and returns a Cucumber::Ast
def parse_file(file)
_, path, lines = *FILE_LINE_PATTERN.match(file)
if path
lines = lines.split(':').map { |line| line.to_i }
else
path = file
lines = []
end
loader = lambda { |io| parse_or_fail(io.read, path) }
feature = if path =~ /^http/
require 'open-uri'
open(path, &loader)
else
File.open(path, Cucumber.file_mode('r'), &loader)
end
feature.lines = lines
feature
end
end
class SyntaxError < StandardError
def initialize(parser, file, line_offset)
tf = parser.terminal_failures
expected = tf.size == 1 ? tf[0].expected_string.inspect : "one of #{tf.map{|f| f.expected_string}.uniq*', '}"
line = parser.failure_line + line_offset
message = "#{file}:#{line}:#{parser.failure_column}: Parse error, expected #{expected}."
super(message)
end
end
end
end
module Treetop
module Runtime
class SyntaxNode
def line
input.line_of(interval.first)
end
end
class CompiledParser
include Cucumber::Parser::TreetopExt
def parse_or_fail(s, file=nil, line=0)
parse_tree = parse(s)
if parse_tree.nil?
raise Cucumber::Parser::SyntaxError.new(self, file, line)
else
ast = parse_tree.build
ast.file = file
ast
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems