CFG: add samples of all syntactical constructs to cfg.rb

ql/test/library-tests/controlflow/graph/cfg.rb

@@ -8,7 +8,6 @@ b = 42
 
 %W(one#{ b } another) # bare string
 
-
 begin 
   puts 4
 end
@@ -20,3 +19,176 @@ BEGIN {
 END {
   puts "world"
 }
+
+41 + 1
+
+2.times { |x| puts x }
+
+puts &:puts
+
+Proc.new { |&x| x.call }
+
+while true
+  break 1
+end
+
+if false
+  puts "impossible"
+end
+
+self.puts 42
+
+case 10
+  when 1 then puts "one"
+  when 2, 3, 4 then puts "some"
+  else puts "many"
+end
+
+case
+  when b == 1 then puts "one"
+  when b == 0, b > 1 then puts "some"
+end
+
+chained = "a" "#{chained}" "string"
+
+character = ?\x40
+
+
+# this is a class
+class Silly < Object
+  complex = 10-2i
+  conditional = b < 10 ? "hello" : "bye"
+  C = "constant"
+  (x, (y, z)) = [1, [2, 3]]
+  def pattern( (a,b) )
+    puts a
+    puts b
+  end
+  items = [1, 2, 3]
+  puts items[2]
+  def print() 
+    puts "silly"
+  end
+end
+
+x = 42
+if x < 0 then 0 elsif x > 10 then 10 else x end
+
+begin
+  ; # empty statement
+rescue Exception, Exception2 => e
+  puts "oops"
+  retry
+else
+  puts "ok"
+ensure
+  puts "end"
+end
+
+escape = "\u1234#{x}\n"
+
+for x in [1.4, 2.5, 3.4e5] do
+  if x > 3 then next end
+  puts x
+end
+
+$global = 42
+
+map1 = { 'a' => 'b', 'c': 'd', }
+map2 = { **map1, 'x' => 'y', **map1}
+
+
+def parameters(value = 42, key:, **kwargs)
+  puts value
+  return kwargs[key]
+end
+
+type  = "healthy"
+table = "food"
+puts (<<SQL)
+SELECT * FROM #{table} \n
+WHERE #{type} = true \n
+SQL
+
+puts "hi" if b > 10
+
+class C 
+  @field = 42
+  @@static_field = 10
+end
+
+swap = ->((x, y)) { [y, x] }
+
+module M
+ nothing = nil
+ some = 2
+ some += 10
+ last = (2; 4; 7)
+ range = 0..9
+ half = 1/3r + 1/6r
+ regex = /hello\s+[#{range}]/
+ Constant = 5
+end
+
+1/0 rescue puts "div by zero"
+
+(*init, last) = 1, 2, 3
+
+M::Constant
+M.itself::Constant
+
+class << Silly.itself
+  def setter=() end
+  def print()
+    puts "singleton"
+    puts super.print()
+  end
+end
+
+silly = Silly.new
+def silly.method(*x) 
+  puts x
+end
+
+def two_parameters (a,b) end
+
+two_parameters(*[1,2])
+
+scriptfile = `cat "#{__FILE__}"`
+
+symbol = :hello
+
+x = true
+x = ! true
+x = - 42
+
+undef two_parameters
+
+unless x == 10 then puts "hi" else puts "bye" end
+  
+puts "hi" unless x == 0
+
+until x > 10 do x += 10; puts "hello" end
+
+i = 0
+(puts "hello"; i += 1) until i == 10
+
+x = 0
+while x < 10 do
+  x += 1
+  if x == 5 then redo end
+  puts x
+end
+
+(puts "hello"; i -= 1) while i != 0
+
+def run_block
+  yield 42
+end
+
+run_block { |x|puts x }
+
+__END__
+
+Some ignored nonsense
+