Finish 3.1.2

VERSION

@@ -1 +1 @@
-3.1.1
+3.1.2

lib/sparql/algebra/expression.rb

@@ -289,7 +289,7 @@ def constant?
     # @return [Expression] a copy of `self`
     # @see    RDF::Query#optimize
     def optimize(**options)
-      self.dup.optimize!(**options)
+      self.deep_dup.optimize!(**options)
     end
 
     ##

lib/sparql/algebra/extensions.rb

@@ -34,7 +34,14 @@ def to_sse
   # @return [Object] a copy of `self`
   # @see SPARQL::Algebra::Expression#optimize
   def optimize(**options)
-    self.dup
+    self.deep_dup
+  end
+
+  ##
+  # Default for deep_dup is shallow dup
+  # @return [Object]
+  def deep_dup
+    dup
   end
 end
 
@@ -201,8 +208,8 @@ def validate!
 
   ##
   # Deep duplicate
-  def dup
-    map(&:dup)
+  def deep_dup
+    map(&:deep_dup)
   end
 end
 
@@ -224,7 +231,13 @@ def to_sxp; to_sxp_bin; end
   # @return [Hash] a copy of `self`
   # @see SPARQL::Algebra::Expression#optimize
   def optimize(**options)
-    self.dup
+    self.deep_dup
+  end
+
+  ##
+  # Deep duplicate
+  def deep_dup
+    inject({}) {|memo, (k, v)| memo.merge(k => v.deep_dup)}
   end
 end
 
@@ -264,7 +277,7 @@ def vars
   # @return [RDF::Term] a copy of `self`
   # @see SPARQL::Algebra::Expression#optimize
   def optimize(**options)
-    optimized = self.dup
+    optimized = self.deep_dup
     optimized.lexical = nil if optimized.respond_to?(:lexical=)
     optimized
   end

lib/sparql/algebra/operator.rb

@@ -357,8 +357,8 @@ def initialize(*operands)
 
     ##
     # Deep duplicate operands
-    def dup
-      self.class.new(*operands.map(&:dup))
+    def deep_dup
+      self.class.new(*operands.map(&:deep_dup))
     end
 
     ##

sparql.gemspec

@@ -26,7 +26,7 @@ Gem::Specification.new do |gem|
   gem.requirements               = []
   gem.add_runtime_dependency     'rdf',                '~> 3.1', '>= 3.1.2'
   gem.add_runtime_dependency     'rdf-aggregate-repo', '~> 3.1'
-  gem.add_runtime_dependency     'ebnf',               '~> 1.2'
+  gem.add_runtime_dependency     'ebnf',               '>= 1.1' #'~> 2.0'
   gem.add_runtime_dependency     'builder',            '~> 3.2'
   gem.add_runtime_dependency     'sxp',                '~> 1.1'
   gem.add_runtime_dependency     'sparql-client',      '~> 3.1'