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# The example from the readme. With this, I am making sure that the readme
# 'works'. Is this too messy?
$:.unshift '../lib'
require 'pp'
require 'parslet'
include Parslet
require 'parslet'
include Parslet
# Constructs a parser using a Parser Expression Grammar like DSL:
parser = str('"') >>
(
str('\\') >> any |
str('"').absnt? >> any
).repeat.as(:string) >>
str('"')
# Parse the string and capture parts of the interpretation (:string above)
tree = parser.parse(%Q{
"This is a \\"String\\" in which you can escape stuff"
}.strip)
tree # => {:string=>"This is a \\\"String\\\" in which you can escape stuff"}
# Here's how you can grab results from that tree, two methods:
# 1)
Pattern.new(:string => simple(:x)).each_match(tree) do |dictionary|
puts "String contents (method 1): #{dictionary[:x]}"
end
# 2)
transform = Parslet::Transform.new do
rule(:string => simple(:x)) {
puts "String contents (method 2): #{x}" }
end
transform.apply(tree)
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