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authorJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-16 18:49:26 +0900
committerJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-30 00:39:06 +0900
commitfcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch)
tree64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/lib/rake/task_arguments.rb
Fresh start
Diffstat (limited to 'jni/ruby/lib/rake/task_arguments.rb')
-rw-r--r--jni/ruby/lib/rake/task_arguments.rb98
1 files changed, 98 insertions, 0 deletions
diff --git a/jni/ruby/lib/rake/task_arguments.rb b/jni/ruby/lib/rake/task_arguments.rb
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+++ b/jni/ruby/lib/rake/task_arguments.rb
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+module Rake
+
+ ##
+ # TaskArguments manage the arguments passed to a task.
+ #
+ class TaskArguments
+ include Enumerable
+
+ # Argument names
+ attr_reader :names
+
+ # Create a TaskArgument object with a list of argument +names+ and a set
+ # of associated +values+. +parent+ is the parent argument object.
+ def initialize(names, values, parent=nil)
+ @names = names
+ @parent = parent
+ @hash = {}
+ @values = values
+ names.each_with_index { |name, i|
+ @hash[name.to_sym] = values[i] unless values[i].nil?
+ }
+ end
+
+ # Retrieve the complete array of sequential values
+ def to_a
+ @values.dup
+ end
+
+ # Retrieve the list of values not associated with named arguments
+ def extras
+ @values[@names.length..-1] || []
+ end
+
+ # Create a new argument scope using the prerequisite argument
+ # names.
+ def new_scope(names)
+ values = names.map { |n| self[n] }
+ self.class.new(names, values + extras, self)
+ end
+
+ # Find an argument value by name or index.
+ def [](index)
+ lookup(index.to_sym)
+ end
+
+ # Specify a hash of default values for task arguments. Use the
+ # defaults only if there is no specific value for the given
+ # argument.
+ def with_defaults(defaults)
+ @hash = defaults.merge(@hash)
+ end
+
+ # Enumerates the arguments and their values
+ def each(&block)
+ @hash.each(&block)
+ end
+
+ # Extracts the argument values at +keys+
+ def values_at(*keys)
+ keys.map { |k| lookup(k) }
+ end
+
+ # Returns the value of the given argument via method_missing
+ def method_missing(sym, *args)
+ lookup(sym.to_sym)
+ end
+
+ # Returns a Hash of arguments and their values
+ def to_hash
+ @hash
+ end
+
+ def to_s # :nodoc:
+ @hash.inspect
+ end
+
+ def inspect # :nodoc:
+ to_s
+ end
+
+ # Returns true if +key+ is one of the arguments
+ def has_key?(key)
+ @hash.has_key?(key)
+ end
+
+ protected
+
+ def lookup(name) # :nodoc:
+ if @hash.has_key?(name)
+ @hash[name]
+ elsif @parent
+ @parent.lookup(name)
+ end
+ end
+ end
+
+ EMPTY_TASK_ARGS = TaskArguments.new([], []) # :nodoc:
+end