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Contents
# frozen_string_literal: true
require "parslet"
module Lutaml
module Uml
module Parsers
class Attribute < Parslet::Parser
class Transform < Parslet::Transform
rule(integer: simple(:x)) { Integer(x) }
rule(float: simple(:x)) { Float(x) }
rule(string: simple(:x)) { String(x) }
end
def self.parse(io, options = {})
new.parse(io, options)
end
def parse(io, options = {})
tree = Transform.new.apply(super)
tree = tree[:assignments].each_with_object({}) do |assignment, memo|
memo[assignment[:name].to_s] = assignment[:value]
end
tree
end
rule(:spaces) { match("\s").repeat(1) }
rule(:spaces?) { spaces.maybe }
rule(:digits) { match["0-9"].repeat(1) }
rule(:integer) do
(str("-").maybe >> digits >> str(".").absent?).as(:integer)
end
rule(:float) do
(str("-").maybe >> digits >> str(".") >> digits).as(:float)
end
rule(:string_single_quoted) do
str("'") >>
(str("'").absent? >> any).repeat.as(:string) >>
str("'")
end
rule(:string_double_quoted) do
str('"') >>
(str('"').absent? >> any).repeat.as(:string) >>
str('"')
end
rule(:string) { string_single_quoted | string_double_quoted }
rule(:assignment_name) do
(match["=\s"].absent? >> any).repeat.as(:name)
end
rule(:assignment_value) { (integer | float | string).as(:value) }
rule(:assignment) do
assignment_name >> spaces? >> str("=") >> spaces? >> assignment_value
end
rule(:attribute) { spaces? >> assignment >> spaces? }
rule(:attributes) do
(attribute >> (str(",") >> attribute).repeat).repeat.as(:assignments)
end
root(:attributes)
end
end
end
end
Version data entries
47 entries across 47 versions & 2 rubygems