Use Primitive.nil? instead of beginless? and endless?

Author: Lillian Zhang

src/main/ruby/truffleruby/core/range.rb

@@ -99,8 +99,8 @@ def bsearch(&block)
   end
 
   private def bsearch_float(&block)
-    normalized_begin = Truffle::RangeOperations.beginless?(self) ? -Float::INFINITY : self.begin.to_f
-    normalized_end = Truffle::RangeOperations.endless?(self) ? Float::INFINITY : self.end.to_f
+    normalized_begin = Primitive.nil?(self.begin) ? -Float::INFINITY : self.begin.to_f
+    normalized_end = Primitive.nil?(self.end) ? Float::INFINITY : self.end.to_f
     normalized_end = normalized_end.prev_float if self.exclude_end?
     min = normalized_begin
     max = normalized_end
@@ -263,12 +263,10 @@ def bsearch(&block)
   end
 
   def count(item = undefined)
-    if Truffle::RangeOperations.beginless?(self) || Truffle::RangeOperations.endless?(self)
+    if Primitive.nil?(self.begin) || Primitive.nil?(self.end)
       return Float::INFINITY unless block_given? || !Primitive.undefined?(item)
     end
 
-    p "count for here"
-
     super
   end
 
@@ -386,15 +384,15 @@ def inspect
   end
 
   def last(n=undefined)
-    raise RangeError, 'cannot get the last element of endless range' if Truffle::RangeOperations.endless?(self)
+    raise RangeError, 'cannot get the last element of endless range' if Primitive.nil? self.end
     return self.end if Primitive.undefined? n
 
     to_a.last(n)
   end
 
   def max
-    raise RangeError, 'cannot get the maximum of endless range' if Truffle::RangeOperations.endless?(self)
-    if Truffle::RangeOperations.beginless?(self)
+    raise RangeError, 'cannot get the maximum of endless range' if Primitive.nil? self.end
+    if Primitive.nil? self.begin
       raise RangeError, 'cannot get the maximum of beginless range with custom comparison method' if block_given?
       return exclude_end? ? self.end - 1 : self.end
     end
@@ -415,8 +413,8 @@ def max
   end
 
   def min
-    raise RangeError, 'cannot get the minimum of beginless range' if Truffle::RangeOperations.beginless?(self)
-    if Truffle::RangeOperations.endless?(self)
+    raise RangeError, 'cannot get the minimum of beginless range' if Primitive.nil? self.begin
+    if Primitive.nil? self.end
       raise RangeError, 'cannot get the minimum of endless range with custom comparison method' if block_given?
       return self.begin
     end
@@ -519,9 +517,9 @@ def cover?(value)
   end
 
   def size
-    return Float::INFINITY if Truffle::RangeOperations.beginless?(self)
+    return Float::INFINITY if Primitive.nil? self.begin
     return nil unless self.begin.kind_of?(Numeric)
-    return Float::INFINITY if Truffle::RangeOperations.endless?(self)
+    return Float::INFINITY if Primitive.nil? self.end
 
     delta = self.end - self.begin
     return 0 if delta < 0

src/main/ruby/truffleruby/core/truffle/range_operations.rb

@@ -113,7 +113,7 @@ def self.cover?(range, value)
       return false unless beg_compare
 
       if Comparable.compare_int(beg_compare) <= 0
-        return true if endless?(range)
+        return true if Primitive.nil? range.end
         end_compare = (value <=> range.end)
 
         if range.exclude_end?
@@ -126,14 +126,6 @@ def self.cover?(range, value)
       false
     end
 
-    def self.beginless?(range)
-      Primitive.nil? range.begin
-    end
-
-    def self.endless?(range)
-      Primitive.nil? range.end
-    end
-
     # MRI: r_less
     def self.range_less(a, b)
       compare = a <=> b