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Contents
require 'yaml'
module BuildMaster
class PropertyMatchError < StandardError
attr_reader :property, :type, :target
def initialize(property, type, target)
@property = property
@type = type
@target = target
end
end
class TreeToObject
def initialize(tree, object)
@tree = tree
@object = object
end
def TreeToObject.from_yaml(content, object)
tree = {}
if (content.chomp!)
tree = YAML.load(content)
if (not tree.kind_of?(Hash))
raise "Format error for content:\n#{content}"
end
end
return TreeToObject.new(tree, object).convert
end
def convert
@tree.each_pair do |key, value|
if (value.kind_of?(Array))
convert_array(key, value)
elsif (value.kind_of?(Hash))
convert_hash(key, value)
else
convert_property(key, value)
end
end
return @object
end
private
def convert_hash(field, hash)
return TreeToObject.new(hash, property("#{field}", field, 'sub property')).convert
end
def convert_array(field, array)
array.each do |item|
TreeToObject.new(item, property("add_to_#{field}", field, 'array')).convert
end
end
def convert_property(field, value)
method = "#{field}="
check_property(method, field, 'string')
@object.send("#{field}=", value)
end
def property(method, field, type)
check_property(method, field, type)
@object.send(method)
end
def check_property(method, field, type)
if not @object.respond_to? method
message = "#{field} does not exist as #{type} in #{@object}"
raise PropertyMatchError.new(field, type, @object), message, caller
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems