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$TESTING = true

require 'minitest/unit'
require 'sexp_processor' # for deep_clone

# key:
# wwtt = what were they thinking?

# TODO: <ko1_> 1.8.7 support {|&b|} syntax

class Examples
attr_reader :reader
attr_writer :writer

def a_method(x); x+1; end
alias an_alias a_method

define_method(:bmethod_noargs) do
x + 1
end

define_method(:unsplatted) do |x|
x + 1
end

define_method :splatted do |*args|
y = args.first
y + 42
end

define_method :dmethod_added, instance_method(:a_method) if
RUBY_VERSION < "1.9"
end

class ParseTreeTestCase < MiniTest::Unit::TestCase
attr_accessor :processor # to be defined by subclass

def setup
super
@processor = nil
end

def after_process_hook klass, node, data, input_name, output_name
end

def before_process_hook klass, node, data, input_name, output_name
end

def self.add_test name, data, klass = self.name[4..-1]
name = name.to_s
klass = klass.to_s

if testcases.has_key? name then
if testcases[name].has_key? klass then
warn "testcase #{klass}##{name} already has data"
else
testcases[name][klass] = data
end
else
warn "testcase #{name} does not exist"
end
end

def self.add_tests name, hash
name = name.to_s

hash.each do |klass, data|
warn "testcase #{klass}##{name} already has data" if
testcases[name].has_key? klass
testcases[name][klass] = data
end
end

def self.clone_same
@@testcases.each do |node, data|
data.each do |key, val|
if val == :same then
prev_key = self.previous(key)
data[key] = data[prev_key].deep_clone
end
end
end
end

def self.copy_test_case nonverbose, klass
verbose = nonverbose + "_mri_verbose_flag"
testcases[verbose][klass] = testcases[nonverbose][klass]
end

def self.generate_test klass, node, data, input_name, output_name
klass.send(:define_method, "test_#{node}".to_sym) do
flunk "Processor is nil" if processor.nil?

assert data.has_key?(input_name), "Unknown input data"
assert data.has_key?(output_name), "Missing test data"

$missing[node] << output_name unless data.has_key? output_name

input = data[input_name].deep_clone
expected = data[output_name].deep_clone

case expected
when :unsupported then
assert_raises(UnsupportedNodeError) do
processor.process(input)
end
else
extra_expected = []
extra_input = []

_, expected, extra_expected = *expected if
Array === expected and expected.first == :defx
_, input, extra_input = *input if
Array === input and input.first == :defx

# OMG... I can't believe I have to do this this way. these
# hooks are here instead of refactoring this define_method
# body into an assertion. It'll allow subclasses to hook in
# and add behavior before or after the processor does it's
# thing. If you go the body refactor route, some of the
# RawParseTree test casese fail for completely bogus reasons.

before_process_hook klass, node, data, input_name, output_name
refute_nil data[input_name], "testcase does not exist?"
@result = processor.process input
assert_equal(expected, @result,
"failed on input: #{data[input_name].inspect}")
after_process_hook klass, node, data, input_name, output_name

extra_input.each do |extra|
processor.process(extra)
end
extra = processor.extra_methods rescue []
assert_equal extra_expected, extra
end
end
end

def self.generate_tests klass
install_missing_reporter
clone_same

output_name = klass.name.to_s.sub(/^Test/, '')

input_name = self.previous(output_name)

@@testcases.each do |node, data|
next if [:skip, :unsupported].include? data[input_name]
next if data[output_name] == :skip

generate_test klass, node, data, input_name, output_name
end
end

def self.inherited klass
super

generate_tests klass unless klass.name =~ /TestCase/
end

def self.install_missing_reporter
unless defined? $missing then
$missing = Hash.new { |h,k| h[k] = [] }
at_exit {
at_exit {
warn ""
$missing.sort.each do |name, klasses|
warn "add_tests(#{name.inspect},"
klasses.map! { |klass| " #{klass.inspect} => :same" }
warn klasses.join("\n") + ")"
end
warn ""
}
}
end
end

def self.previous(key, extra=0) # FIX: remove R2C code
idx = @@testcase_order.index(key)

raise "Unknown class #{key} in @@testcase_order" if idx.nil?

case key
when "RubyToRubyC" then
idx -= 1
end
@@testcase_order[idx - 1 - extra]
end

def self.testcase_order; @@testcase_order; end
def self.testcases; @@testcases; end

def self.unsupported_tests *tests
tests.flatten.each do |name|
add_test name, :unsupported
end
end

############################################################
# Shared TestCases:

@@testcase_order = %w(Ruby RawParseTree ParseTree)

@@testcases = Hash.new { |h,k| h[k] = {} }

add_tests("alias",
"Ruby" => "class X\n alias :y :x\nend",
"RawParseTree" => [:class, :X, nil,
[:scope, [:alias, [:lit, :y], [:lit, :x]]]],
"ParseTree" => s(:class, :X, nil,
s(:scope, s(:alias, s(:lit, :y), s(:lit, :x)))))

add_tests("alias_ugh",
"Ruby" => "class X\n alias y x\nend",
"RawParseTree" => [:class, :X, nil,
[:scope, [:alias, [:lit, :y], [:lit, :x]]]],
"ParseTree" => s(:class, :X, nil,
s(:scope, s(:alias, s(:lit, :y), s(:lit, :x)))),
"Ruby2Ruby" => "class X\n alias :y :x\nend")

add_tests("and",
"Ruby" => "(a and b)",
"RawParseTree" => [:and, [:vcall, :a], [:vcall, :b]],
"ParseTree" => s(:and,
s(:call, nil, :a, s(:arglist)),
s(:call, nil, :b, s(:arglist))))

add_tests("argscat_inside",
"Ruby" => "a = [b, *c]",
"RawParseTree" => [:lasgn, :a,
[:argscat,
[:array, [:vcall, :b]], [:vcall, :c]]],
"ParseTree" => s(:lasgn, :a,
s(:array,
s(:call, nil, :b, s(:arglist)),
s(:splat, s(:call, nil, :c, s(:arglist))))))

add_tests("argscat_svalue",
"Ruby" => "a = b, c, *d",
"RawParseTree" => [:lasgn, :a,
[:svalue,
[:argscat,
[:array, [:vcall, :b], [:vcall, :c]],
[:vcall, :d]]]],
"ParseTree" => s(:lasgn, :a,
s(:svalue,
s(:array,
s(:call, nil, :b, s(:arglist)),
s(:call, nil, :c, s(:arglist)),
s(:splat,
s(:call, nil, :d, s(:arglist)))))))

add_tests("argspush",
"Ruby" => "a[*b] = c",
"RawParseTree" => [:attrasgn,
[:vcall, :a],
:[]=,
[:argspush,
[:splat,
[:vcall, :b]],
[:vcall, :c]]],
"ParseTree" => s(:attrasgn,
s(:call, nil, :a, s(:arglist)),
:[]=,
s(:arglist,
s(:splat,
s(:call, nil, :b, s(:arglist))),
s(:call, nil, :c, s(:arglist)))))

add_tests("array",
"Ruby" => "[1, :b, \"c\"]",
"RawParseTree" => [:array, [:lit, 1], [:lit, :b], [:str, "c"]],
"ParseTree" => s(:array, s(:lit, 1), s(:lit, :b), s(:str, "c")))

add_tests("array_pct_W",
"Ruby" => "%W[a b c]",
"RawParseTree" => [:array, [:str, "a"], [:str, "b"], [:str, "c"]],
"ParseTree" => s(:array,
s(:str, "a"), s(:str, "b"), s(:str, "c")),
"Ruby2Ruby" => "[\"a\", \"b\", \"c\"]")

add_tests("array_pct_W_dstr",
"Ruby" => "%W[a #\{@b} c]",
"RawParseTree" => [:array,
[:str, "a"],
[:dstr, "", [:evstr, [:ivar, :@b]]],
[:str, "c"]],
"ParseTree" => s(:array,
s(:str, "a"),
s(:dstr, "", s(:evstr, s(:ivar, :@b))),
s(:str, "c")),
"Ruby2Ruby" => "[\"a\", \"#\{@b}\", \"c\"]")

add_tests("array_pct_w",
"Ruby" => "%w[a b c]",
"RawParseTree" => [:array, [:str, "a"], [:str, "b"], [:str, "c"]],
"ParseTree" => s(:array,
s(:str, "a"), s(:str, "b"), s(:str, "c")),
"Ruby2Ruby" => "[\"a\", \"b\", \"c\"]")

add_tests("array_pct_w_dstr",
"Ruby" => "%w[a #\{@b} c]",
"RawParseTree" => [:array,
[:str, "a"],
[:str, "#\{@b}"],
[:str, "c"]],
"ParseTree" => s(:array,
s(:str, "a"),
s(:str, "#\{@b}"),
s(:str, "c")),
"Ruby2Ruby" => "[\"a\", \"\\\#{@b}\", \"c\"]") # TODO: huh?

add_tests("attrasgn",
"Ruby" => "y = 0\n42.method = y\n",
"RawParseTree" => [:block,
[:lasgn, :y, [:lit, 0]],
[:attrasgn, [:lit, 42], :method=,
[:array, [:lvar, :y]]]],
"ParseTree" => s(:block,
s(:lasgn, :y, s(:lit, 0)),
s(:attrasgn, s(:lit, 42), :method=,
s(:arglist, s(:lvar, :y)))))

add_tests("attrasgn_index_equals",
"Ruby" => "a[42] = 24",
"RawParseTree" => [:attrasgn, [:vcall, :a], :[]=,
[:array, [:lit, 42], [:lit, 24]]],
"ParseTree" => s(:attrasgn,
s(:call, nil, :a, s(:arglist)),
:[]=,
s(:arglist, s(:lit, 42), s(:lit, 24))))

add_tests("attrasgn_index_equals_space",
"Ruby" => "a = []; a [42] = 24",
"RawParseTree" => [:block,
[:lasgn, :a, [:zarray]],
[:attrasgn, [:lvar, :a], :[]=,
[:array, [:lit, 42], [:lit, 24]]]],
"ParseTree" => s(:block,
s(:lasgn, :a, s(:array)),
s(:attrasgn, s(:lvar, :a), :[]=,
s(:arglist, s(:lit, 42), s(:lit, 24)))),
"Ruby2Ruby" => "a = []\na[42] = 24\n")

add_tests("attrset",
"Ruby" => [Examples, :writer=],
"RawParseTree" => [:defn, :writer=, [:attrset, :@writer]],
"ParseTree" => s(:defn, :writer=,
s(:args, :arg),
s(:attrset, :@writer)),
"Ruby2Ruby" => "attr_writer :writer")

add_tests("back_ref",
"Ruby" => "[$&, $`, $', $+]",
"RawParseTree" => [:array,
[:back_ref, :&],
[:back_ref, :"`"],
[:back_ref, :"'"],
[:back_ref, :+]],
"ParseTree" => s(:array,
s(:back_ref, :&),
s(:back_ref, :"`"),
s(:back_ref, :"'"),
s(:back_ref, :+)))

add_tests("begin",
"Ruby" => "begin\n (1 + 1)\nend",
"RawParseTree" => [:call, [:lit, 1], :+, [:array, [:lit, 1]]],
"ParseTree" => s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))),
"Ruby2Ruby" => "(1 + 1)")

add_tests("begin_def",
"Ruby" => "def m\n begin\n\n end\nend",
"RawParseTree" => [:defn, :m, [:scope, [:block, [:args], [:nil]]]],
"ParseTree" => s(:defn, :m, s(:args),
s(:scope, s(:block, s(:nil)))),
"Ruby2Ruby" => "def m\n # do nothing\nend")

add_tests("begin_rescue_ensure",
"Ruby" => "begin\n a\nrescue\n # do nothing\nensure\n # do nothing\nend",
"RawParseTree" => [:ensure,
[:rescue,
[:vcall, :a],
[:resbody, nil]],
[:nil]],
"ParseTree" => s(:ensure,
s(:rescue,
s(:call, nil, :a, s(:arglist)),
s(:resbody, s(:array), nil)),
s(:nil)))

add_tests("begin_rescue_ensure_all_empty",
"Ruby" => "begin\n # do nothing\nrescue\n # do nothing\nensure\n # do nothing\nend",
"RawParseTree" => [:ensure,
[:rescue,
[:resbody, nil]],
[:nil]],
"ParseTree" => s(:ensure,
s(:rescue,
s(:resbody, s(:array), nil)),
s(:nil)))

add_tests("begin_rescue_twice",
"Ruby" => "begin\n a\nrescue => mes\n # do nothing\nend\nbegin\n b\nrescue => mes\n # do nothing\nend\n",
"RawParseTree" => [:block,
[:rescue,
[:vcall, :a],
[:resbody, nil,
[:lasgn, :mes, [:gvar, :$!]]]],
[:rescue,
[:vcall, :b],
[:resbody, nil,
[:lasgn, :mes, [:gvar, :$!]]]]],
"ParseTree" => s(:block,
s(:rescue,
s(:call, nil, :a, s(:arglist)),
s(:resbody,
s(:array, s(:lasgn, :mes, s(:gvar, :$!))),
nil)),
s(:rescue,
s(:call, nil, :b, s(:arglist)),
s(:resbody,
s(:array,
s(:lasgn, :mes, s(:gvar, :$!))),
nil))))

add_tests("begin_rescue_twice_mri_verbose_flag",
"RawParseTree" => [:block,
[:rescue, # no begin
[:vcall, :a],
[:resbody, nil,
[:lasgn, :mes, [:gvar, :$!]]]],
[:rescue,
[:vcall, :b],
[:resbody, nil,
[:lasgn, :mes, [:gvar, :$!]]]]])

copy_test_case "begin_rescue_twice", "Ruby"
copy_test_case "begin_rescue_twice", "ParseTree"

add_tests("block_attrasgn",
"Ruby" => "def self.setup(ctx)\n bind = allocate\n bind.context = ctx\n return bind\nend",
"RawParseTree" => [:defs, [:self], :setup,
[:scope,
[:block,
[:args, :ctx],
[:lasgn, :bind, [:vcall, :allocate]],
[:attrasgn, [:lvar, :bind], :context=,
[:array, [:lvar, :ctx]]],
[:return, [:lvar, :bind]]]]],
"ParseTree" => s(:defs, s(:self), :setup,
s(:args, :ctx),
s(:scope,
s(:block,
s(:lasgn, :bind,
s(:call, nil, :allocate, s(:arglist))),
s(:attrasgn, s(:lvar, :bind), :context=,
s(:arglist, s(:lvar, :ctx))),
s(:return, s(:lvar, :bind))))))


add_tests("block_lasgn",
"Ruby" => "x = (y = 1\n(y + 2))",
"RawParseTree" => [:lasgn, :x,
[:block,
[:lasgn, :y, [:lit, 1]],
[:call, [:lvar, :y], :+, [:array, [:lit, 2]]]]],
"ParseTree" => s(:lasgn, :x,
s(:block,
s(:lasgn, :y, s(:lit, 1)),
s(:call, s(:lvar, :y), :+,
s(:arglist, s(:lit, 2))))))

add_tests("block_mystery_block",
"Ruby" => "a(b) do\n if b then\n true\n else\n c = false\n d { |x| c = true }\n c\n end\nend",
"RawParseTree" => [:iter,
[:fcall, :a, [:array, [:vcall, :b]]],
nil,
[:if,
[:vcall, :b],
[:true],
[:block,
[:dasgn_curr, :c, [:false]],
[:iter,
[:fcall, :d],
[:dasgn_curr, :x],
[:dasgn, :c, [:true]]],
[:dvar, :c]]]],
"ParseTree" => s(:iter,
s(:call, nil, :a,
s(:arglist, s(:call, nil, :b, s(:arglist)))),
nil,
s(:if,
s(:call, nil, :b, s(:arglist)),
s(:true),
s(:block,
s(:lasgn, :c, s(:false)),
s(:iter,
s(:call, nil, :d, s(:arglist)),
s(:lasgn, :x),
s(:lasgn, :c, s(:true))),
s(:lvar, :c)))))

add_tests("block_pass_args_and_splat",
"Ruby" => "def blah(*args, &block)\n other(42, *args, &block)\nend",
"RawParseTree" => [:defn, :blah,
[:scope,
[:block,
[:args, :"*args"],
[:block_arg, :block],
[:block_pass,
[:lvar, :block],
[:fcall, :other,
[:argscat,
[:array, [:lit, 42]], [:lvar, :args]]]]]]],
"ParseTree" => s(:defn, :blah,
s(:args, :"*args", :"&block"),
s(:scope,
s(:block,
s(:call, nil, :other,
s(:arglist,
s(:lit, 42),
s(:splat, s(:lvar, :args)),
s(:block_pass, s(:lvar, :block))))))))

add_tests("block_pass_call_0",
"Ruby" => "a.b(&c)",
"RawParseTree" => [:block_pass,
[:vcall, :c], [:call, [:vcall, :a], :b]],
"ParseTree" => s(:call,
s(:call, nil, :a, s(:arglist)),
:b,
s(:arglist,
s(:block_pass,
s(:call, nil, :c, s(:arglist))))))

add_tests("block_pass_call_1",
"Ruby" => "a.b(4, &c)",
"RawParseTree" => [:block_pass,
[:vcall, :c],
[:call, [:vcall, :a], :b, [:array, [:lit, 4]]]],
"ParseTree" => s(:call,
s(:call, nil, :a, s(:arglist)),
:b,
s(:arglist,
s(:lit, 4),
s(:block_pass,
s(:call, nil, :c, s(:arglist))))))

add_tests("block_pass_call_n",
"Ruby" => "a.b(1, 2, 3, &c)",
"RawParseTree" => [:block_pass,
[:vcall, :c],
[:call, [:vcall, :a], :b,
[:array, [:lit, 1], [:lit, 2], [:lit, 3]]]],
"ParseTree" => s(:call,
s(:call, nil, :a, s(:arglist)),
:b,
s(:arglist,
s(:lit, 1), s(:lit, 2), s(:lit, 3),
s(:block_pass,
s(:call, nil, :c, s(:arglist))))))

add_tests("block_pass_fcall_0",
"Ruby" => "a(&b)",
"RawParseTree" => [:block_pass, [:vcall, :b], [:fcall, :a]],
"ParseTree" => s(:call, nil, :a,
s(:arglist,
s(:block_pass,
s(:call, nil, :b, s(:arglist))))))

add_tests("block_pass_fcall_1",
"Ruby" => "a(4, &b)",
"RawParseTree" => [:block_pass,
[:vcall, :b],
[:fcall, :a, [:array, [:lit, 4]]]],
"ParseTree" => s(:call, nil, :a,
s(:arglist,
s(:lit, 4),
s(:block_pass,
s(:call, nil, :b, s(:arglist))))))

add_tests("block_pass_fcall_n",
"Ruby" => "a(1, 2, 3, &b)",
"RawParseTree" => [:block_pass,
[:vcall, :b],
[:fcall, :a,
[:array, [:lit, 1], [:lit, 2], [:lit, 3]]]],
"ParseTree" => s(:call, nil, :a,
s(:arglist,
s(:lit, 1), s(:lit, 2), s(:lit, 3),
s(:block_pass,
s(:call, nil, :b, s(:arglist))))))

add_tests("block_pass_omgwtf",
"Ruby" => "define_attr_method(:x, :sequence_name, &Proc.new { |*args| nil })",
"RawParseTree" => [:block_pass,
[:iter,
[:call, [:const, :Proc], :new],
[:masgn, nil, [:dasgn_curr, :args], nil],
[:nil]],
[:fcall, :define_attr_method,
[:array, [:lit, :x], [:lit, :sequence_name]]]],
"ParseTree" => s(:call, nil, :define_attr_method,
s(:arglist,
s(:lit, :x),
s(:lit, :sequence_name),
s(:block_pass,
s(:iter,
s(:call, s(:const, :Proc), :new,
s(:arglist)),
s(:masgn,
s(:array, s(:splat, s(:lasgn, :args)))),
s(:nil))))))

add_tests("block_pass_splat",
"Ruby" => "def blah(*args, &block)\n other(*args, &block)\nend",
"RawParseTree" => [:defn, :blah,
[:scope,
[:block,
[:args, :"*args"],
[:block_arg, :block],
[:block_pass,
[:lvar, :block],
[:fcall, :other,
[:splat, [:lvar, :args]]]]]]],
"ParseTree" => s(:defn, :blah,
s(:args, :"*args", :"&block"),
s(:scope,
s(:block,
s(:call, nil, :other,
s(:arglist,
s(:splat, s(:lvar, :args)),
s(:block_pass, s(:lvar, :block))))))))

add_tests("block_pass_thingy",
"Ruby" => "r.read_body(dest, &block)",
"RawParseTree" => [:block_pass,
[:vcall, :block],
[:call, [:vcall, :r], :read_body,
[:array, [:vcall, :dest]]]],
"ParseTree" => s(:call,
s(:call, nil, :r, s(:arglist)),
:read_body,
s(:arglist,
s(:call, nil, :dest, s(:arglist)),
s(:block_pass,
s(:call, nil, :block, s(:arglist))))))

add_tests("block_stmt_after",
"Ruby" => "def f\n begin\n b\n rescue\n c\n end\n\n d\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args],
[:rescue,
[:vcall, :b],
[:resbody, nil, [:vcall, :c]]],
[:vcall, :d]]]],
"ParseTree" => s(:defn, :f,
s(:args),
s(:scope,
s(:block,
s(:rescue,
s(:call, nil, :b, s(:arglist)),
s(:resbody,
s(:array),
s(:call, nil, :c, s(:arglist)))),
s(:call, nil, :d, s(:arglist))))),
"Ruby2Ruby" => "def f\n b rescue c\n d\nend")

add_tests("block_stmt_after_mri_verbose_flag",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args],
[:rescue, # no begin
[:vcall, :b],
[:resbody, nil, [:vcall, :c]]],
[:vcall, :d]]]])

copy_test_case "block_stmt_after", "Ruby"
copy_test_case "block_stmt_after", "ParseTree"
copy_test_case "block_stmt_after", "Ruby2Ruby"

add_tests("block_stmt_before",
"Ruby" => "def f\n a\n begin\n b\n rescue\n c\n end\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args],
[:vcall, :a],
[:rescue, [:vcall, :b],
[:resbody, nil, [:vcall, :c]]]]]],
"ParseTree" => s(:defn, :f,
s(:args),
s(:scope,
s(:block,
s(:call, nil, :a, s(:arglist)),
s(:rescue, s(:call, nil, :b, s(:arglist)),
s(:resbody,
s(:array),
s(:call, nil, :c, s(:arglist))))))),
"Ruby2Ruby" => "def f\n a\n b rescue c\nend")

# oddly... this one doesn't HAVE any differences when verbose... new?
copy_test_case "block_stmt_before", "Ruby"
copy_test_case "block_stmt_before", "ParseTree"
copy_test_case "block_stmt_before", "RawParseTree"
copy_test_case "block_stmt_before", "Ruby2Ruby"

add_tests("block_stmt_both",
"Ruby" => "def f\n a\n begin\n b\n rescue\n c\n end\n d\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args],
[:vcall, :a],
[:rescue,
[:vcall, :b],
[:resbody,
nil,
[:vcall, :c]]],
[:vcall, :d]]]],
"ParseTree" => s(:defn, :f, s(:args),
s(:scope,
s(:block,
s(:call, nil, :a, s(:arglist)),
s(:rescue,
s(:call, nil, :b, s(:arglist)),
s(:resbody,
s(:array),
s(:call, nil, :c, s(:arglist)))),
s(:call, nil, :d, s(:arglist))))),
"Ruby2Ruby" => "def f\n a\n b rescue c\n d\nend")

add_tests("block_stmt_both_mri_verbose_flag",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args],
[:vcall, :a],
[:rescue, # no begin
[:vcall, :b],
[:resbody,
nil,
[:vcall, :c]]],
[:vcall, :d]]]])

copy_test_case "block_stmt_both", "Ruby"
copy_test_case "block_stmt_both", "ParseTree"
copy_test_case "block_stmt_both", "Ruby2Ruby"

add_tests("bmethod",
"Ruby" => [Examples, :unsplatted],
"RawParseTree" => [:defn, :unsplatted,
[:bmethod,
[:dasgn_curr, :x],
[:call, [:dvar, :x], :+, [:array, [:lit, 1]]]]],
"ParseTree" => s(:defn, :unsplatted,
s(:args, :x),
s(:scope,
s(:block,
s(:call,
s(:lvar, :x),
:+,
s(:arglist, s(:lit, 1)))))),
"Ruby2Ruby" => "def unsplatted(x)\n (x + 1)\nend")

add_tests("bmethod_noargs",
"Ruby" => [Examples, :bmethod_noargs],
"RawParseTree" => [:defn, :bmethod_noargs,
[:bmethod,
nil,
[:call,
[:vcall, :x], :"+", [:array, [:lit, 1]]]]],
"ParseTree" => s(:defn, :bmethod_noargs,
s(:args),
s(:scope,
s(:block,
s(:call,
s(:call, nil, :x, s(:arglist)),
:"+",
s(:arglist, s(:lit, 1)))))),
"Ruby2Ruby" => "def bmethod_noargs\n (x + 1)\nend")

add_tests("bmethod_splat",
"Ruby" => [Examples, :splatted],
"RawParseTree" => [:defn, :splatted,
[:bmethod,
[:masgn, nil, [:dasgn_curr, :args], nil],
[:block,
[:dasgn_curr, :y,
[:call, [:dvar, :args], :first]],
[:call, [:dvar, :y], :+,
[:array, [:lit, 42]]]]]],
"ParseTree" => s(:defn, :splatted,
s(:args, :"*args"),
s(:scope,
s(:block,
s(:lasgn, :y,
s(:call, s(:lvar, :args), :first,
s(:arglist))),
s(:call, s(:lvar, :y), :+,
s(:arglist, s(:lit, 42)))))),
"Ruby2Ruby" => "def splatted(*args)\n y = args.first\n (y + 42)\nend")

add_tests("break",
"Ruby" => "loop { break if true }",
"RawParseTree" => [:iter,
[:fcall, :loop], nil,
[:if, [:true], [:break], nil]],
"ParseTree" => s(:iter,
s(:call, nil, :loop, s(:arglist)), nil,
s(:if, s(:true), s(:break), nil)))

add_tests("break_arg",
"Ruby" => "loop { break 42 if true }",
"RawParseTree" => [:iter,
[:fcall, :loop], nil,
[:if, [:true], [:break, [:lit, 42]], nil]],
"ParseTree" => s(:iter,
s(:call, nil, :loop, s(:arglist)), nil,
s(:if, s(:true), s(:break, s(:lit, 42)), nil)))

add_tests("call",
"Ruby" => "self.method",
"RawParseTree" => [:call, [:self], :method],
"ParseTree" => s(:call, s(:self), :method, s(:arglist)))

add_tests("call_arglist",
"Ruby" => "o.puts(42)",
"RawParseTree" => [:call, [:vcall, :o], :puts,
[:array, [:lit, 42]]],
"ParseTree" => s(:call, s(:call, nil, :o, s(:arglist)), :puts,
s(:arglist, s(:lit, 42))))

add_tests("call_arglist_hash",
"Ruby" => "o.m(:a => 1, :b => 2)",
"RawParseTree" => [:call,
[:vcall, :o], :m,
[:array,
[:hash,
[:lit, :a], [:lit, 1],
[:lit, :b], [:lit, 2]]]],
"ParseTree" => s(:call,
s(:call, nil, :o, s(:arglist)), :m,
s(:arglist,
s(:hash,
s(:lit, :a), s(:lit, 1),
s(:lit, :b), s(:lit, 2)))))

add_tests("call_arglist_norm_hash",
"Ruby" => "o.m(42, :a => 1, :b => 2)",
"RawParseTree" => [:call,
[:vcall, :o], :m,
[:array,
[:lit, 42],
[:hash,
[:lit, :a], [:lit, 1],
[:lit, :b], [:lit, 2]]]],
"ParseTree" => s(:call,
s(:call, nil, :o, s(:arglist)), :m,
s(:arglist,
s(:lit, 42),
s(:hash,
s(:lit, :a), s(:lit, 1),
s(:lit, :b), s(:lit, 2)))))

add_tests("call_arglist_norm_hash_splat",
"Ruby" => "o.m(42, :a => 1, :b => 2, *c)",
"RawParseTree" => [:call,
[:vcall, :o], :m,
[:argscat,
[:array,
[:lit, 42],
[:hash,
[:lit, :a], [:lit, 1],
[:lit, :b], [:lit, 2]]],
[:vcall, :c]]],
"ParseTree" => s(:call,
s(:call, nil, :o, s(:arglist)), :m,
s(:arglist,
s(:lit, 42),
s(:hash,
s(:lit, :a), s(:lit, 1),
s(:lit, :b), s(:lit, 2)),
s(:splat, s(:call, nil, :c, s(:arglist))))))

add_tests("call_arglist_space",
"Ruby" => "a (1,2,3)",
"RawParseTree" => [:fcall, :a,
[:array, [:lit, 1], [:lit, 2], [:lit, 3]]],
"ParseTree" => s(:call, nil, :a,
s(:arglist,
s(:lit, 1), s(:lit, 2), s(:lit, 3))),
"Ruby2Ruby" => "a(1, 2, 3)")

add_tests("call_command",
"Ruby" => "1.b(c)",
"RawParseTree" => [:call, [:lit, 1], :b, [:array, [:vcall, :c]]],
"ParseTree" => s(:call,
s(:lit, 1),
:b,
s(:arglist, s(:call, nil, :c, s(:arglist)))))

add_tests("call_expr",
"Ruby" => "(v = (1 + 1)).zero?",
"RawParseTree" => [:call,
[:lasgn, :v,
[:call, [:lit, 1], :+, [:array, [:lit, 1]]]],
:zero?],
"ParseTree" => s(:call,
s(:lasgn, :v,
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1)))),
:zero?, s(:arglist)))

add_tests("call_index",
"Ruby" => "a = []\na[42]\n",
"RawParseTree" => [:block,
[:lasgn, :a, [:zarray]],
[:call, [:lvar, :a], :[], [:array, [:lit, 42]]]],
"ParseTree" => s(:block,
s(:lasgn, :a, s(:array)),
s(:call, s(:lvar, :a), :[],
s(:arglist, s(:lit, 42)))))

add_tests("call_index_no_args",
"Ruby" => "a[]",
"RawParseTree" => [:call, [:vcall, :a], :[]],
"ParseTree" => s(:call, s(:call, nil, :a, s(:arglist)),
:[], s(:arglist)))

add_tests("call_index_space",
"Ruby" => "a = []\na [42]\n",
"RawParseTree" => [:block,
[:lasgn, :a, [:zarray]],
[:call, [:lvar, :a], :[], [:array, [:lit, 42]]]],
"ParseTree" => s(:block,
s(:lasgn, :a, s(:array)),
s(:call, s(:lvar, :a), :[],
s(:arglist, s(:lit, 42)))),
"Ruby2Ruby" => "a = []\na[42]\n")

add_tests("call_unary_neg",
"Ruby" => "-2**31",
"RawParseTree" => [:call,
[:call, [:lit, 2], :**, [:array, [:lit, 31]]],
:-@],
"ParseTree" => s(:call,
s(:call,
s(:lit, 2),
:**,
s(:arglist, s(:lit, 31))),
:-@, s(:arglist)),
"Ruby2Ruby" => "-(2 ** 31)")

add_tests("case",
"Ruby" => "var = 2\nresult = \"\"\ncase var\nwhen 1 then\n puts(\"something\")\n result = \"red\"\nwhen 2, 3 then\n result = \"yellow\"\nwhen 4 then\n # do nothing\nelse\n result = \"green\"\nend\ncase result\nwhen \"red\" then\n var = 1\nwhen \"yellow\" then\n var = 2\nwhen \"green\" then\n var = 3\nelse\n # do nothing\nend\n",
"RawParseTree" => [:block,
[:lasgn, :var, [:lit, 2]],
[:lasgn, :result, [:str, ""]],
[:case,
[:lvar, :var],
[:when,
[:array, [:lit, 1]],
[:block,
[:fcall, :puts,
[:array, [:str, "something"]]],
[:lasgn, :result, [:str, "red"]]]],
[:when,
[:array, [:lit, 2], [:lit, 3]],
[:lasgn, :result, [:str, "yellow"]]],
[:when, [:array, [:lit, 4]], nil],
[:lasgn, :result, [:str, "green"]]],
[:case,
[:lvar, :result],
[:when, [:array, [:str, "red"]],
[:lasgn, :var, [:lit, 1]]],
[:when, [:array, [:str, "yellow"]],
[:lasgn, :var, [:lit, 2]]],
[:when, [:array, [:str, "green"]],
[:lasgn, :var, [:lit, 3]]],
nil]],
"ParseTree" => s(:block,
s(:lasgn, :var, s(:lit, 2)),
s(:lasgn, :result, s(:str, "")),
s(:case,
s(:lvar, :var),
s(:when,
s(:array, s(:lit, 1)),
s(:block,
s(:call, nil, :puts,
s(:arglist, s(:str, "something"))),
s(:lasgn, :result, s(:str, "red")))),
s(:when,
s(:array, s(:lit, 2), s(:lit, 3)),
s(:lasgn, :result, s(:str, "yellow"))),
s(:when, s(:array, s(:lit, 4)), nil),
s(:lasgn, :result, s(:str, "green"))),
s(:case,
s(:lvar, :result),
s(:when, s(:array, s(:str, "red")),
s(:lasgn, :var, s(:lit, 1))),
s(:when, s(:array, s(:str, "yellow")),
s(:lasgn, :var, s(:lit, 2))),
s(:when, s(:array, s(:str, "green")),
s(:lasgn, :var, s(:lit, 3))),
nil)))

add_tests("case_nested",
"Ruby" => "var1 = 1\nvar2 = 2\nresult = nil\ncase var1\nwhen 1 then\n case var2\n when 1 then\n result = 1\n when 2 then\n result = 2\n else\n result = 3\n end\nwhen 2 then\n case var2\n when 1 then\n result = 4\n when 2 then\n result = 5\n else\n result = 6\n end\nelse\n result = 7\nend\n",
"RawParseTree" => [:block,
[:lasgn, :var1, [:lit, 1]],
[:lasgn, :var2, [:lit, 2]],
[:lasgn, :result, [:nil]],
[:case,
[:lvar, :var1],
[:when, [:array, [:lit, 1]],
[:case,
[:lvar, :var2],
[:when, [:array, [:lit, 1]],
[:lasgn, :result, [:lit, 1]]],
[:when, [:array, [:lit, 2]],
[:lasgn, :result, [:lit, 2]]],
[:lasgn, :result, [:lit, 3]]]],
[:when, [:array, [:lit, 2]],
[:case,
[:lvar, :var2],
[:when, [:array, [:lit, 1]],
[:lasgn, :result, [:lit, 4]]],
[:when, [:array, [:lit, 2]],
[:lasgn, :result, [:lit, 5]]],
[:lasgn, :result, [:lit, 6]]]],
[:lasgn, :result, [:lit, 7]]]],
"ParseTree" => s(:block,
s(:lasgn, :var1, s(:lit, 1)),
s(:lasgn, :var2, s(:lit, 2)),
s(:lasgn, :result, s(:nil)),
s(:case,
s(:lvar, :var1),
s(:when, s(:array, s(:lit, 1)),
s(:case,
s(:lvar, :var2),
s(:when, s(:array, s(:lit, 1)),
s(:lasgn, :result, s(:lit, 1))),
s(:when, s(:array, s(:lit, 2)),
s(:lasgn, :result, s(:lit, 2))),
s(:lasgn, :result, s(:lit, 3)))),
s(:when, s(:array, s(:lit, 2)),
s(:case,
s(:lvar, :var2),
s(:when, s(:array, s(:lit, 1)),
s(:lasgn, :result, s(:lit, 4))),
s(:when, s(:array, s(:lit, 2)),
s(:lasgn, :result, s(:lit, 5))),
s(:lasgn, :result, s(:lit, 6)))),
s(:lasgn, :result, s(:lit, 7)))))

add_tests("case_nested_inner_no_expr",
"Ruby" => "case a\nwhen b then\n case\n when (d and e) then\n f\n else\n # do nothing\n end\nelse\n # do nothing\nend",
"RawParseTree" => [:case, [:vcall, :a],
[:when, [:array, [:vcall, :b]],
[:case, nil,
[:when,
[:array, [:and, [:vcall, :d], [:vcall, :e]]],
[:vcall, :f]],
nil]],
nil],
"ParseTree" => s(:case, s(:call, nil, :a, s(:arglist)),
s(:when,
s(:array, s(:call, nil, :b, s(:arglist))),
s(:case, nil,
s(:when,
s(:array,
s(:and,
s(:call, nil, :d, s(:arglist)),
s(:call, nil, :e, s(:arglist)))),
s(:call, nil, :f, s(:arglist))),
nil)),
nil))

add_tests("case_no_expr",
"Ruby" => "case\nwhen (a == 1) then\n :a\nwhen (a == 2) then\n :b\nelse\n :c\nend",
"RawParseTree" => [:case, nil,
[:when,
[:array,
[:call, [:vcall, :a], :==,
[:array, [:lit, 1]]]],
[:lit, :a]],
[:when,
[:array,
[:call, [:vcall, :a], :==,
[:array, [:lit, 2]]]],
[:lit, :b]],
[:lit, :c]],
"ParseTree" => s(:case, nil,
s(:when,
s(:array,
s(:call,
s(:call, nil, :a, s(:arglist)),
:==,
s(:arglist, s(:lit, 1)))),
s(:lit, :a)),
s(:when,
s(:array,
s(:call,
s(:call, nil, :a, s(:arglist)),
:==,
s(:arglist, s(:lit, 2)))),
s(:lit, :b)),
s(:lit, :c)))

add_tests("case_splat",
"Ruby" => "case a\nwhen :b, *c then\n d\nelse\n e\nend",
"RawParseTree" => [:case, [:vcall, :a],
[:when,
[:array,
[:lit, :b], [:when, [:vcall, :c], nil]], # wtf?
[:vcall, :d]],
[:vcall, :e]],
"ParseTree" => s(:case, s(:call, nil, :a, s(:arglist)),
s(:when,
s(:array,
s(:lit, :b),
s(:when,
s(:call, nil, :c, s(:arglist)),
nil)), # wtf?
s(:call, nil, :d, s(:arglist))),
s(:call, nil, :e, s(:arglist))))

add_tests("cdecl",
"Ruby" => "X = 42",
"RawParseTree" => [:cdecl, :X, [:lit, 42]],
"ParseTree" => s(:cdecl, :X, s(:lit, 42)))

add_tests("class_plain",
"Ruby" => "class X\n puts((1 + 1))\n def blah\n puts(\"hello\")\n end\nend",
"RawParseTree" => [:class,
:X,
nil,
[:scope,
[:block,
[:fcall, :puts,
[:array,
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]]]],
[:defn, :blah,
[:scope,
[:block,
[:args],
[:fcall, :puts,
[:array, [:str, "hello"]]]]]]]]],
"ParseTree" => s(:class,
:X,
nil,
s(:scope,
s(:block,
s(:call, nil, :puts,
s(:arglist,
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))))),
s(:defn, :blah,
s(:args),
s(:scope,
s(:block,
s(:call, nil, :puts,
s(:arglist,
s(:str, "hello"))))))))))

add_tests("class_scoped",
"Ruby" => "class X::Y\n c\nend",
"RawParseTree" => [:class, [:colon2, [:const, :X], :Y], nil,
[:scope, [:vcall, :c]]],
"ParseTree" => s(:class, s(:colon2, s(:const, :X), :Y), nil,
s(:scope, s(:call, nil, :c, s(:arglist)))))

add_tests("class_scoped3",
"Ruby" => "class ::Y\n c\nend",
"RawParseTree" => [:class, [:colon3, :Y], nil,
[:scope, [:vcall, :c]]],
"ParseTree" => s(:class, s(:colon3, :Y), nil,
s(:scope, s(:call, nil, :c, s(:arglist)))))

add_tests("class_super_array",
"Ruby" => "class X < Array\nend",
"RawParseTree" => [:class,
:X,
[:const, :Array],
[:scope]],
"ParseTree" => s(:class,
:X,
s(:const, :Array),
s(:scope)))

add_tests("class_super_expr",
"Ruby" => "class X < expr\nend",
"RawParseTree" => [:class,
:X,
[:vcall, :expr],
[:scope]],
"ParseTree" => s(:class,
:X,
s(:call, nil, :expr, s(:arglist)),
s(:scope)))

add_tests("class_super_object",
"Ruby" => "class X < Object\nend",
"RawParseTree" => [:class,
:X,
[:const, :Object],
[:scope]],
"ParseTree" => s(:class,
:X,
s(:const, :Object),
s(:scope)))

add_tests("colon2",
"Ruby" => "X::Y",
"RawParseTree" => [:colon2, [:const, :X], :Y],
"ParseTree" => s(:colon2, s(:const, :X), :Y))

add_tests("colon3",
"Ruby" => "::X",
"RawParseTree" => [:colon3, :X],
"ParseTree" => s(:colon3, :X))

add_tests("const",
"Ruby" => "X",
"RawParseTree" => [:const, :X],
"ParseTree" => s(:const, :X))

add_tests("constX",
"Ruby" => "X = 1",
"RawParseTree" => [:cdecl, :X, [:lit, 1]],
"ParseTree" => s(:cdecl, :X, s(:lit, 1)))

add_tests("constY",
"Ruby" => "::X = 1",
"RawParseTree" => [:cdecl, [:colon3, :X], [:lit, 1]],
"ParseTree" => s(:cdecl, s(:colon3, :X), s(:lit, 1)))

add_tests("constZ",
"Ruby" => "X::Y = 1",
"RawParseTree" => [:cdecl, [:colon2, [:const, :X], :Y], [:lit, 1]],
"ParseTree" => s(:cdecl,
s(:colon2, s(:const, :X), :Y),
s(:lit, 1)))

add_tests("cvar",
"Ruby" => "@@x",
"RawParseTree" => [:cvar, :@@x],
"ParseTree" => s(:cvar, :@@x))

add_tests("cvasgn",
"Ruby" => "def x\n @@blah = 1\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block, [:args],
[:cvasgn, :@@blah, [:lit, 1]]]]],
"ParseTree" => s(:defn, :x,
s(:args),
s(:scope,
s(:block,
s(:cvasgn, :@@blah, s(:lit, 1))))))

add_tests("cvasgn_cls_method",
"Ruby" => "def self.quiet_mode=(boolean)\n @@quiet_mode = boolean\nend",
"RawParseTree" => [:defs, [:self], :quiet_mode=,
[:scope,
[:block,
[:args, :boolean],
[:cvasgn, :@@quiet_mode, [:lvar, :boolean]]]]],
"ParseTree" => s(:defs, s(:self), :quiet_mode=,
s(:args, :boolean),
s(:scope,
s(:block,
s(:cvasgn, :@@quiet_mode,
s(:lvar, :boolean))))))

add_tests("cvdecl",
"Ruby" => "class X\n @@blah = 1\nend",
"RawParseTree" => [:class, :X, nil,
[:scope, [:cvdecl, :@@blah, [:lit, 1]]]],
"ParseTree" => s(:class, :X, nil,
s(:scope, s(:cvdecl, :@@blah, s(:lit, 1)))))

add_tests("dasgn_0",
"Ruby" => "a.each { |x| b.each { |y| x = (x + 1) } if true }",
"RawParseTree" => [:iter,
[:call, [:vcall, :a], :each],
[:dasgn_curr, :x],
[:if, [:true],
[:iter,
[:call, [:vcall, :b], :each],
[:dasgn_curr, :y],
[:dasgn, :x,
[:call, [:dvar, :x], :+,
[:array, [:lit, 1]]]]],
nil]],
"ParseTree" => s(:iter,
s(:call, s(:call, nil, :a, s(:arglist)), :each,
s(:arglist)),
s(:lasgn, :x),
s(:if, s(:true),
s(:iter,
s(:call, s(:call, nil, :b, s(:arglist)),
:each,
s(:arglist)),
s(:lasgn, :y),
s(:lasgn, :x,
s(:call, s(:lvar, :x), :+,
s(:arglist, s(:lit, 1))))),
nil)))

add_tests("dasgn_1",
"Ruby" => "a.each { |x| b.each { |y| c = (c + 1) } if true }",
"RawParseTree" => [:iter,
[:call, [:vcall, :a], :each],
[:dasgn_curr, :x],
[:if, [:true],
[:iter,
[:call, [:vcall, :b], :each],
[:dasgn_curr, :y],
[:dasgn_curr, :c,
[:call, [:dvar, :c], :+,
[:array, [:lit, 1]]]]],
nil]],
"ParseTree" => s(:iter,
s(:call, s(:call, nil, :a, s(:arglist)), :each,
s(:arglist)),
s(:lasgn, :x),
s(:if, s(:true),
s(:iter,
s(:call, s(:call, nil, :b, s(:arglist)),
:each,
s(:arglist)),
s(:lasgn, :y),
s(:lasgn, :c,
s(:call, s(:lvar, :c), :+,
s(:arglist, s(:lit, 1))))),
nil)))

add_tests("dasgn_2",
"Ruby" => "a.each do |x|\n if true then\n c = 0\n b.each { |y| c = (c + 1) }\n end\nend", # FIX: hate that extra newline!
"RawParseTree" => [:iter,
[:call, [:vcall, :a], :each],
[:dasgn_curr, :x],
[:if, [:true],
[:block,
[:dasgn_curr, :c, [:lit, 0]],
[:iter,
[:call, [:vcall, :b], :each],
[:dasgn_curr, :y],
[:dasgn, :c,
[:call, [:dvar, :c], :+,
[:array, [:lit, 1]]]]]],
nil]],
"ParseTree" => s(:iter,
s(:call, s(:call, nil, :a, s(:arglist)), :each,
s(:arglist)),
s(:lasgn, :x),
s(:if, s(:true),
s(:block,
s(:lasgn, :c, s(:lit, 0)),
s(:iter,
s(:call, s(:call, nil, :b, s(:arglist)),
:each,
s(:arglist)),
s(:lasgn, :y),
s(:lasgn, :c,
s(:call, s(:lvar, :c), :+,
s(:arglist, s(:lit, 1)))))),
nil)))

add_tests("dasgn_curr",
"Ruby" => "data.each do |x, y|\n a = 1\n b = a\n b = a = x\nend",
"RawParseTree" => [:iter,
[:call, [:vcall, :data], :each],
[:masgn,
[:array, [:dasgn_curr, :x], [:dasgn_curr, :y]],
nil, nil],
[:block,
[:dasgn_curr, :a, [:lit, 1]],
[:dasgn_curr, :b, [:dvar, :a]],
[:dasgn_curr, :b,
[:dasgn_curr, :a, [:dvar, :x]]]]],
"ParseTree" => s(:iter,
s(:call, s(:call, nil, :data,
s(:arglist)), :each, s(:arglist)),
s(:masgn,
s(:array, s(:lasgn, :x), s(:lasgn, :y))),
s(:block,
s(:lasgn, :a, s(:lit, 1)),
s(:lasgn, :b, s(:lvar, :a)),
s(:lasgn, :b, s(:lasgn, :a, s(:lvar, :x))))))

add_tests("dasgn_icky",
"Ruby" => "a do\n v = nil\n assert_block(full_message) do\n begin\n yield\n rescue Exception => v\n break\n end\n end\nend",
"RawParseTree" => [:iter,
[:fcall, :a],
nil,
[:block,
[:dasgn_curr, :v, [:nil]],
[:iter,
[:fcall, :assert_block,
[:array, [:vcall, :full_message]]],
nil,
[:rescue,
[:yield],
[:resbody,
[:array, [:const, :Exception]],
[:block,
[:dasgn, :v,
[:gvar, :$!]], [:break]]]]]]],
"ParseTree" => s(:iter,
s(:call, nil, :a, s(:arglist)),
nil,
s(:block,
s(:lasgn, :v, s(:nil)),
s(:iter,
s(:call, nil, :assert_block,
s(:arglist,
s(:call, nil, :full_message,
s(:arglist)))),
nil,
s(:rescue,
s(:yield),
s(:resbody,
s(:array,
s(:const, :Exception),
s(:lasgn, :v, s(:gvar, :$!))),
s(:break)))))))

add_tests("dasgn_mixed",
"Ruby" => "t = 0\nns.each { |n| t += n }\n",
"RawParseTree" => [:block,
[:lasgn, :t, [:lit, 0]],
[:iter,
[:call, [:vcall, :ns], :each],
[:dasgn_curr, :n],
[:lasgn, :t,
[:call, [:lvar, :t], :+,
[:array, [:dvar, :n]]]]]],
"ParseTree" => s(:block,
s(:lasgn, :t, s(:lit, 0)),
s(:iter,
s(:call, s(:call, nil, :ns,
s(:arglist)), :each, s(:arglist)),
s(:lasgn, :n),
s(:lasgn, :t,
s(:call, s(:lvar, :t), :+,
s(:arglist, s(:lvar, :n)))))),
"Ruby2Ruby" => "t = 0\nns.each { |n| t = (t + n) }\n")

add_tests("defined",
"Ruby" => "defined? $x",
"RawParseTree" => [:defined, [:gvar, :$x]],
"ParseTree" => s(:defined, s(:gvar, :$x)))

# TODO: make all the defn_args* p their arglist
add_tests("defn_args_block",
"Ruby" => "def f(&block)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args],
[:block_arg, :block],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :"&block"),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_mand",
"Ruby" => "def f(mand)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :mand],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :mand),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_mand_block",
"Ruby" => "def f(mand, &block)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :mand],
[:block_arg, :block],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :mand, :"&block"),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_mand_opt",
"Ruby" => "def f(mand, opt = 42)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :mand, :opt,
[:block,
[:lasgn, :opt, [:lit, 42]]]],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :mand, :opt,
s(:block,
s(:lasgn, :opt, s(:lit, 42)))),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_mand_opt_block",
"Ruby" => "def f(mand, opt = 42, &block)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :mand, :opt,
[:block,
[:lasgn, :opt, [:lit, 42]]]],
[:block_arg, :block],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :mand, :opt, :"&block",
s(:block,
s(:lasgn, :opt, s(:lit, 42)))),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_mand_opt_splat",
"Ruby" => "def f(mand, opt = 42, *rest)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :mand, :opt, :"*rest",
[:block,
[:lasgn, :opt, [:lit, 42]]]],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :mand, :opt, :"*rest",
s(:block,
s(:lasgn, :opt, s(:lit, 42)))),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_mand_opt_splat_block",
"Ruby" => "def f(mand, opt = 42, *rest, &block)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :mand, :opt, :"*rest",
[:block,
[:lasgn, :opt, [:lit, 42]]]],
[:block_arg, :block],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :mand, :opt, :"*rest", :"&block",
s(:block,
s(:lasgn, :opt, s(:lit, 42)))),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_mand_opt_splat_no_name",
"Ruby" => "def x(a, b = 42, *)\n # do nothing\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args, :a, :b, :"*",
[:block, [:lasgn, :b, [:lit, 42]]]],
[:nil]]]],
"ParseTree" => s(:defn, :x,
s(:args, :a, :b, :"*",
s(:block, s(:lasgn, :b, s(:lit, 42)))),
s(:scope,
s(:block,
s(:nil)))))

add_tests("defn_args_mand_splat",
"Ruby" => "def f(mand, *rest)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :mand, :"*rest"],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :mand, :"*rest"),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_mand_splat_block",
"Ruby" => "def f(mand, *rest, &block)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :mand, :"*rest"],
[:block_arg, :block],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :mand, :"*rest", :"&block"),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_mand_splat_no_name",
"Ruby" => "def x(a, *args)\n p(a, args)\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args, :a, :"*args"],
[:fcall, :p,
[:array, [:lvar, :a], [:lvar, :args]]]]]],
"ParseTree" => s(:defn, :x,
s(:args, :a, :"*args"),
s(:scope,
s(:block,
s(:call, nil, :p,
s(:arglist, s(:lvar, :a), s(:lvar, :args)))))))

add_tests("defn_args_none",
"Ruby" => "def empty\n # do nothing\nend",
"RawParseTree" => [:defn, :empty,
[:scope, [:block, [:args], [:nil]]]],
"ParseTree" => s(:defn, :empty,
s(:args),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_opt",
"Ruby" => "def f(opt = 42)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :opt,
[:block,
[:lasgn, :opt, [:lit, 42]]]],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :opt,
s(:block,
s(:lasgn, :opt, s(:lit, 42)))),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_opt_block",
"Ruby" => "def f(opt = 42, &block)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :opt,
[:block,
[:lasgn, :opt, [:lit, 42]]]],
[:block_arg, :block],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :opt, :"&block",
s(:block,
s(:lasgn, :opt, s(:lit, 42)))),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_opt_splat",
"Ruby" => "def f(opt = 42, *rest)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :opt, :"*rest",
[:block,
[:lasgn, :opt, [:lit, 42]]]],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :opt, :"*rest",
s(:block,
s(:lasgn, :opt, s(:lit, 42)))),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_opt_splat_block",
"Ruby" => "def f(opt = 42, *rest, &block)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :opt, :"*rest",
[:block,
[:lasgn, :opt, [:lit, 42]]]],
[:block_arg, :block],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :opt, :"*rest", :"&block",
s(:block,
s(:lasgn, :opt, s(:lit, 42)))),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_opt_splat_no_name",
"Ruby" => "def x(b = 42, *)\n # do nothing\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args, :b, :"*",
[:block, [:lasgn, :b, [:lit, 42]]]],
[:nil]]]],
"ParseTree" => s(:defn, :x,
s(:args, :b, :"*",
s(:block, s(:lasgn, :b, s(:lit, 42)))),
s(:scope,
s(:block,
s(:nil)))))

add_tests("defn_args_splat",
"Ruby" => "def f(*rest)\n # do nothing\nend",
"RawParseTree" => [:defn, :f,
[:scope,
[:block,
[:args, :"*rest"],
[:nil]]]],
"ParseTree" => s(:defn, :f,
s(:args, :"*rest"),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_args_splat_no_name",
"Ruby" => "def x(*)\n # do nothing\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args, :"*"],
[:nil]]]],
"ParseTree" => s(:defn, :x,
s(:args, :"*"),
s(:scope,
s(:block,
s(:nil)))))

add_tests("defn_or",
"Ruby" => "def |(o)\n # do nothing\nend",
"RawParseTree" => [:defn, :|,
[:scope, [:block, [:args, :o], [:nil]]]],
"ParseTree" => s(:defn, :|,
s(:args, :o),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_rescue",
"Ruby" => "def eql?(resource)\n (self.uuid == resource.uuid)\nrescue\n false\nend",
"RawParseTree" => [:defn, :eql?,
[:scope,
[:block,
[:args, :resource],
[:rescue,
[:call,
[:call, [:self], :uuid],
:==,
[:array,
[:call, [:lvar, :resource], :uuid]]],
[:resbody, nil, [:false]]]]]],
"ParseTree" => s(:defn, :eql?,
s(:args, :resource),
s(:scope,
s(:block,
s(:rescue,
s(:call,
s(:call, s(:self), :uuid, s(:arglist)),
:==,
s(:arglist,
s(:call, s(:lvar, :resource),
:uuid, s(:arglist)))),
s(:resbody, s(:array), s(:false)))))),
"Ruby2Ruby" => "def eql?(resource)\n (self.uuid == resource.uuid) rescue false\nend")

add_tests("defn_rescue_mri_verbose_flag",
"Ruby" => "def eql?(resource)\n (self.uuid == resource.uuid)\nrescue\n false\nend",
"RawParseTree" => [:defn, :eql?,
[:scope,
[:block,
[:args, :resource],
[:rescue,
[:call,
[:call, [:self], :uuid],
:==,
[:array,
[:call, [:lvar, :resource], :uuid]]],
[:resbody, nil, [:false]]]]]],
"ParseTree" => s(:defn, :eql?,
s(:args, :resource),
s(:scope,
s(:block,
s(:rescue,
s(:call,
s(:call, s(:self), :uuid, s(:arglist)),
:==,
s(:arglist,
s(:call, s(:lvar, :resource),
:uuid, s(:arglist)))),
s(:resbody, s(:array), s(:false)))))),
"Ruby2Ruby" => "def eql?(resource)\n (self.uuid == resource.uuid) rescue false\nend")

add_tests("defn_something_eh",
"Ruby" => "def something?\n # do nothing\nend",
"RawParseTree" => [:defn, :something?,
[:scope, [:block, [:args], [:nil]]]],
"ParseTree" => s(:defn, :something?,
s(:args),
s(:scope, s(:block, s(:nil)))))

add_tests("defn_splat_no_name",
"Ruby" => "def x(a, *)\n p(a)\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args, :a, :"*"],
[:fcall, :p,
[:array, [:lvar, :a]]]]]],
"ParseTree" => s(:defn, :x,
s(:args, :a, :"*"),
s(:scope,
s(:block,
s(:call, nil, :p,
s(:arglist, s(:lvar, :a)))))))

add_tests("defn_zarray",
"Ruby" => "def zarray\n a = []\n return a\nend",
"RawParseTree" => [:defn, :zarray,
[:scope,
[:block, [:args],
[:lasgn, :a, [:zarray]],
[:return, [:lvar, :a]]]]],
"ParseTree" => s(:defn, :zarray,
s(:args),
s(:scope,
s(:block,
s(:lasgn, :a, s(:array)),
s(:return, s(:lvar, :a))))))

add_tests("defs",
"Ruby" => "def self.x(y)\n (y + 1)\nend",
"RawParseTree" => [:defs, [:self], :x,
[:scope,
[:block,
[:args, :y],
[:call, [:lvar, :y], :+,
[:array, [:lit, 1]]]]]],
"ParseTree" => s(:defs, s(:self), :x,
s(:args, :y),
s(:scope,
s(:block,
s(:call, s(:lvar, :y), :+,
s(:arglist, s(:lit, 1)))))))

add_tests("defs_empty",
"Ruby" => "def self.empty\n # do nothing\nend",
"RawParseTree" => [:defs, [:self], :empty,
[:scope, [:args]]],
"ParseTree" => s(:defs, s(:self), :empty,
s(:args),
s(:scope, s(:block))))

add_tests("defs_empty_args",
"Ruby" => "def self.empty(*)\n # do nothing\nend",
"RawParseTree" => [:defs, [:self], :empty,
[:scope, [:args, :*]]],
"ParseTree" => s(:defs, s(:self), :empty,
s(:args, :*),
s(:scope, s(:block))))

add_tests("defs_expr_wtf",
"Ruby" => "def (a.b).empty(*)\n # do nothing\nend",
"RawParseTree" => [:defs,
[:call, [:vcall, :a], :b],
:empty,
[:scope, [:args, :*]]],
"ParseTree" => s(:defs,
s(:call,
s(:call, nil, :a, s(:arglist)),
:b, s(:arglist)),
:empty,
s(:args, :*),
s(:scope, s(:block))))

add_tests("dmethod",
"Ruby" => [Examples, :dmethod_added],
"RawParseTree" => [:defn, :dmethod_added,
[:dmethod,
:a_method,
[:scope,
[:block,
[:args, :x],
[:call, [:lvar, :x], :+,
[:array, [:lit, 1]]]]]]],
"ParseTree" => s(:defn, :dmethod_added,
s(:args, :x),
s(:scope,
s(:block,
s(:call, s(:lvar, :x), :+,
s(:arglist, s(:lit, 1)))))),
"Ruby2Ruby" => "def dmethod_added(x)\n (x + 1)\nend")

add_tests("dot2",
"Ruby" => "(a..b)",
"RawParseTree" => [:dot2, [:vcall, :a], [:vcall, :b]],
"ParseTree" => s(:dot2,
s(:call, nil, :a, s(:arglist)),
s(:call, nil, :b, s(:arglist))))

add_tests("dot3",
"Ruby" => "(a...b)",
"RawParseTree" => [:dot3, [:vcall, :a], [:vcall, :b]],
"ParseTree" => s(:dot3,
s(:call, nil, :a, s(:arglist)),
s(:call, nil, :b, s(:arglist))))

add_tests("dregx",
"Ruby" => "/x#\{(1 + 1)}y/",
"RawParseTree" => [:dregx, "x",
[:evstr,
[:call, [:lit, 1], :+, [:array, [:lit, 1]]]],
[:str, "y"]],
"ParseTree" => s(:dregx, "x",
s(:evstr,
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1)))),
s(:str, "y")))

add_tests("dregx_interp",
"Ruby" => "/#\{@rakefile}/",
"RawParseTree" => [:dregx, '', [:evstr, [:ivar, :@rakefile]]],
"ParseTree" => s(:dregx, '', s(:evstr, s(:ivar, :@rakefile))))

add_tests("dregx_interp_empty",
"Ruby" => "/a#\{}b/",
"RawParseTree" => [:dregx, 'a', [:evstr], [:str, "b"]],
"ParseTree" => s(:dregx, 'a', s(:evstr), s(:str, "b")))

add_tests("dregx_n",
"Ruby" => '/#{1}/n',
"RawParseTree" => [:dregx, '', [:evstr, [:lit, 1]], /x/n.options],
"ParseTree" => s(:dregx, '',
s(:evstr, s(:lit, 1)), /x/n.options),
"Ruby2Ruby" => "/#\{1}/") # HACK - need to support regexp flag

add_tests("dregx_once",
"Ruby" => "/x#\{(1 + 1)}y/o",
"RawParseTree" => [:dregx_once, "x",
[:evstr,
[:call, [:lit, 1], :+, [:array, [:lit, 1]]]],
[:str, "y"]],
"ParseTree" => s(:dregx_once, "x",
s(:evstr,
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1)))),
s(:str, "y")))

add_tests("dregx_once_n_interp",
"Ruby" => "/#\{IAC}#\{SB}/no",
"RawParseTree" => [:dregx_once, '',
[:evstr, [:const, :IAC]],
[:evstr, [:const, :SB]], /x/n.options],
"ParseTree" => s(:dregx_once, '',
s(:evstr, s(:const, :IAC)),
s(:evstr, s(:const, :SB)), /x/n.options),
"Ruby2Ruby" => "/#\{IAC}#\{SB}/o") # HACK

add_tests("dstr",
"Ruby" => "argl = 1\n\"x#\{argl}y\"\n",
"RawParseTree" => [:block,
[:lasgn, :argl, [:lit, 1]],
[:dstr, "x", [:evstr, [:lvar, :argl]],
[:str, "y"]]],
"ParseTree" => s(:block,
s(:lasgn, :argl, s(:lit, 1)),
s(:dstr, "x", s(:evstr, s(:lvar, :argl)),
s(:str, "y"))))

add_tests("dstr_2",
"Ruby" => "argl = 1\n\"x#\{(\"%.2f\" % 3.14159)}y\"\n",
"RawParseTree" => [:block,
[:lasgn, :argl, [:lit, 1]],
[:dstr,
"x",
[:evstr,
[:call, [:str, "%.2f"], :%,
[:array, [:lit, 3.14159]]]],
[:str, "y"]]],
"ParseTree" => s(:block,
s(:lasgn, :argl, s(:lit, 1)),
s(:dstr,
"x",
s(:evstr,
s(:call, s(:str, "%.2f"), :%,
s(:arglist, s(:lit, 3.14159)))),
s(:str, "y"))))

add_tests("dstr_3",
"Ruby" => "max = 2\nargl = 1\n\"x#\{(\"%.#\{max}f\" % 3.14159)}y\"\n",
"RawParseTree" => [:block,
[:lasgn, :max, [:lit, 2]],
[:lasgn, :argl, [:lit, 1]],
[:dstr, "x",
[:evstr,
[:call,
[:dstr, "%.",
[:evstr, [:lvar, :max]],
[:str, "f"]],
:%,
[:array, [:lit, 3.14159]]]],
[:str, "y"]]],
"ParseTree" => s(:block,
s(:lasgn, :max, s(:lit, 2)),
s(:lasgn, :argl, s(:lit, 1)),
s(:dstr, "x",
s(:evstr,
s(:call,
s(:dstr, "%.",
s(:evstr, s(:lvar, :max)),
s(:str, "f")),
:%,
s(:arglist, s(:lit, 3.14159)))),
s(:str, "y"))))

add_tests("dstr_concat",
"Ruby" => '"#{22}aa" "cd#{44}" "55" "#{66}"',
"RawParseTree" => [:dstr,
"",
[:evstr, [:lit, 22]],
[:str, "aa"],
[:str, "cd"],
[:evstr, [:lit, 44]],
[:str, "55"],
[:evstr, [:lit, 66]]],
"ParseTree" => s(:dstr,
"",
s(:evstr, s(:lit, 22)),
s(:str, "aa"),
s(:str, "cd"),
s(:evstr, s(:lit, 44)),
s(:str, "55"),
s(:evstr, s(:lit, 66))),
"Ruby2Ruby" => '"#{22}aacd#{44}55#{66}"')

add_tests("dstr_gross",
"Ruby" => '"a #$global b #@ivar c #@@cvar d"',
"RawParseTree" => [:dstr, "a ",
[:evstr, [:gvar, :$global]],
[:str, " b "],
[:evstr, [:ivar, :@ivar]],
[:str, " c "],
[:evstr, [:cvar, :@@cvar]],
[:str, " d"]],
"ParseTree" => s(:dstr, "a ",
s(:evstr, s(:gvar, :$global)),
s(:str, " b "),
s(:evstr, s(:ivar, :@ivar)),
s(:str, " c "),
s(:evstr, s(:cvar, :@@cvar)),
s(:str, " d")),
"Ruby2Ruby" => '"a #{$global} b #{@ivar} c #{@@cvar} d"')

add_tests("dstr_heredoc_expand",
"Ruby" => "<<EOM\n blah\n#\{1 + 1}blah\nEOM\n",
"RawParseTree" => [:dstr, " blah\n",
[:evstr, [:call, [:lit, 1], :+,
[:array, [:lit, 1]]]],
[:str, "blah\n"]],
"ParseTree" => s(:dstr, " blah\n",
s(:evstr, s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1)))),
s(:str, "blah\n")),
"Ruby2Ruby" => "\" blah\\n#\{(1 + 1)}blah\\n\"")

add_tests("dstr_heredoc_windoze_sucks",
"Ruby" => "<<-EOF\r\ndef test_#\{action}_valid_feed\r\n EOF\r\n",
"RawParseTree" => [:dstr,
'def test_',
[:evstr, [:vcall, :action]],
[:str, "_valid_feed\n"]],
"ParseTree" => s(:dstr,
'def test_',
s(:evstr, s(:call, nil, :action, s(:arglist))),
s(:str, "_valid_feed\n")),
"Ruby2Ruby" => "\"def test_#\{action}_valid_feed\\n\"")

add_tests("dstr_heredoc_yet_again",
"Ruby" => "<<-EOF\ns1 '#\{RUBY_PLATFORM}' s2\n#\{__FILE__}\n EOF\n",
"RawParseTree" => [:dstr, "s1 '",
[:evstr, [:const, :RUBY_PLATFORM]],
[:str, "' s2\n"],
[:str, "(string)"],
[:str, "\n"]],
"ParseTree" => s(:dstr, "s1 '",
s(:evstr, s(:const, :RUBY_PLATFORM)),
s(:str, "' s2\n"),
s(:str, "(string)"),
s(:str, "\n")),
"Ruby2Ruby" => "\"s1 '#\{RUBY_PLATFORM}' s2\\n(string)\\n\"")

add_tests("dstr_nest",
"Ruby" => "%Q[before [#\{nest}] after]",
"RawParseTree" => [:dstr, "before [",
[:evstr, [:vcall, :nest]], [:str, "] after"]],
"ParseTree" => s(:dstr, "before [",
s(:evstr, s(:call, nil, :nest, s(:arglist))),
s(:str, "] after")),
"Ruby2Ruby" => "\"before [#\{nest}] after\"")

add_tests("dstr_str_lit_start",
"Ruby" => '"#{"blah"}#{__FILE__}:#{__LINE__}: warning: #{$!.message} (#{$!.class})"',
"RawParseTree" => [:dstr,
"blah(string):",
[:evstr, [:lit, 1]],
[:str, ": warning: "],
[:evstr, [:call, [:gvar, :$!], :message]],
[:str, " ("],
[:evstr, [:call, [:gvar, :$!], :class]],
[:str, ")"]],
"ParseTree" => s(:dstr,
"blah(string):",
s(:evstr, s(:lit, 1)),
s(:str, ": warning: "),
s(:evstr, s(:call, s(:gvar, :$!), :message,
s(:arglist))),
s(:str, " ("),
s(:evstr, s(:call, s(:gvar, :$!), :class,
s(:arglist))),
s(:str, ")")),
"Ruby2Ruby" => '"blah(string):#{1}: warning: #{$!.message} (#{$!.class})"')

add_tests("dstr_the_revenge",
"Ruby" => '"before #{from} middle #{to} (#{__FILE__}:#{__LINE__})"',
"RawParseTree" => [:dstr,
"before ",
[:evstr, [:vcall, :from]],
[:str, " middle "],
[:evstr, [:vcall, :to]],
[:str, " ("],
[:str, "(string)"],
[:str, ":"],
[:evstr, [:lit, 1]],
[:str, ")"]],
"ParseTree" => s(:dstr,
"before ",
s(:evstr, s(:call, nil, :from, s(:arglist))),
s(:str, " middle "),
s(:evstr, s(:call, nil, :to, s(:arglist))),
s(:str, " ("),
s(:str, "(string)"),
s(:str, ":"),
s(:evstr, s(:lit, 1)),
s(:str, ")")),
"Ruby2Ruby" => '"before #{from} middle #{to} ((string):#{1})"')

add_tests("dsym",
"Ruby" => ":\"x#\{(1 + 1)}y\"",
"RawParseTree" => [:dsym, "x",
[:evstr, [:call, [:lit, 1], :+,
[:array, [:lit, 1]]]], [:str, "y"]],
"ParseTree" => s(:dsym, "x",
s(:evstr, s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1)))), s(:str, "y")))

add_tests("dxstr",
"Ruby" => "t = 5\n`touch #\{t}`\n",
"RawParseTree" => [:block,
[:lasgn, :t, [:lit, 5]],
[:dxstr, 'touch ', [:evstr, [:lvar, :t]]]],
"ParseTree" => s(:block,
s(:lasgn, :t, s(:lit, 5)),
s(:dxstr, 'touch ', s(:evstr, s(:lvar, :t)))))

add_tests("ensure",
"Ruby" => "begin\n (1 + 1)\nrescue SyntaxError => e1\n 2\nrescue Exception => e2\n 3\nelse\n 4\nensure\n 5\nend",
"RawParseTree" => [:ensure,
[:rescue,
[:call, [:lit, 1], :+, [:array, [:lit, 1]]],
[:resbody,
[:array, [:const, :SyntaxError]],
[:block,
[:lasgn, :e1, [:gvar, :$!]], [:lit, 2]],
[:resbody,
[:array, [:const, :Exception]],
[:block,
[:lasgn, :e2, [:gvar, :$!]], [:lit, 3]]]],
[:lit, 4]],
[:lit, 5]],
"ParseTree" => s(:ensure,
s(:rescue,
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))),
s(:resbody,
s(:array,
s(:const, :SyntaxError),
s(:lasgn, :e1, s(:gvar, :$!))),
s(:lit, 2)),
s(:resbody,
s(:array,
s(:const, :Exception),
s(:lasgn, :e2, s(:gvar, :$!))),
s(:lit, 3)),
s(:lit, 4)),
s(:lit, 5)))

add_tests("false",
"Ruby" => "false",
"RawParseTree" => [:false],
"ParseTree" => s(:false))

add_tests("fbody",
"Ruby" => [Examples, :an_alias],
"RawParseTree" => [:defn, :an_alias,
[:fbody,
[:scope,
[:block,
[:args, :x],
[:call, [:lvar, :x], :+,
[:array, [:lit, 1]]]]]]],
"ParseTree" => s(:defn, :an_alias,
s(:args, :x),
s(:scope,
s(:block,
s(:call, s(:lvar, :x), :+,
s(:arglist, s(:lit, 1)))))),
"Ruby2Ruby" => "def an_alias(x)\n (x + 1)\nend")

add_tests("fcall_arglist",
"Ruby" => "m(42)",
"RawParseTree" => [:fcall, :m, [:array, [:lit, 42]]],
"ParseTree" => s(:call, nil, :m, s(:arglist, s(:lit, 42))))

add_tests("fcall_arglist_hash",
"Ruby" => "m(:a => 1, :b => 2)",
"RawParseTree" => [:fcall, :m,
[:array,
[:hash,
[:lit, :a], [:lit, 1],
[:lit, :b], [:lit, 2]]]],
"ParseTree" => s(:call, nil, :m,
s(:arglist,
s(:hash,
s(:lit, :a), s(:lit, 1),
s(:lit, :b), s(:lit, 2)))))

add_tests("fcall_arglist_norm_hash",
"Ruby" => "m(42, :a => 1, :b => 2)",
"RawParseTree" => [:fcall, :m,
[:array,
[:lit, 42],
[:hash,
[:lit, :a], [:lit, 1],
[:lit, :b], [:lit, 2]]]],
"ParseTree" => s(:call, nil, :m,
s(:arglist,
s(:lit, 42),
s(:hash,
s(:lit, :a), s(:lit, 1),
s(:lit, :b), s(:lit, 2)))))

add_tests("fcall_arglist_norm_hash_splat",
"Ruby" => "m(42, :a => 1, :b => 2, *c)",
"RawParseTree" => [:fcall, :m,
[:argscat,
[:array,
[:lit, 42],
[:hash,
[:lit, :a], [:lit, 1],
[:lit, :b], [:lit, 2]]],
[:vcall, :c]]],
"ParseTree" => s(:call, nil, :m,
s(:arglist,
s(:lit, 42),
s(:hash,
s(:lit, :a), s(:lit, 1),
s(:lit, :b), s(:lit, 2)),
s(:splat, s(:call, nil, :c, s(:arglist))))))

add_tests("fcall_block",
"Ruby" => "a(:b) { :c }",
"RawParseTree" => [:iter,
[:fcall, :a, [:array, [:lit, :b]]], nil,
[:lit, :c]],
"ParseTree" => s(:iter,
s(:call, nil, :a,
s(:arglist, s(:lit, :b))), nil,
s(:lit, :c)))

add_tests("fcall_index_space",
"Ruby" => "a [42]",
"RawParseTree" => [:fcall, :a, [:array, [:array, [:lit, 42]]]],
"ParseTree" => s(:call, nil, :a,
s(:arglist, s(:array, s(:lit, 42)))),
"Ruby2Ruby" => "a([42])")

add_tests("fcall_keyword",
"Ruby" => "42 if block_given?",
"RawParseTree" => [:if, [:fcall, :block_given?], [:lit, 42], nil],
"ParseTree" => s(:if,
s(:call, nil, :block_given?, s(:arglist)),
s(:lit, 42), nil))

add_tests("flip2",
"Ruby" => "x = if ((i % 4) == 0)..((i % 3) == 0) then\n i\nelse\n nil\nend",
"RawParseTree" => [:lasgn,
:x,
[:if,
[:flip2,
[:call,
[:call, [:vcall, :i], :%,
[:array, [:lit, 4]]],
:==,
[:array, [:lit, 0]]],
[:call,
[:call, [:vcall, :i], :%,
[:array, [:lit, 3]]],
:==,
[:array, [:lit, 0]]]],
[:vcall, :i],
[:nil]]],
"ParseTree" => s(:lasgn,
:x,
s(:if,
s(:flip2,
s(:call,
s(:call, s(:call, nil, :i, s(:arglist)),
:%,
s(:arglist, s(:lit, 4))),
:==,
s(:arglist, s(:lit, 0))),
s(:call,
s(:call, s(:call, nil, :i, s(:arglist)),
:%,
s(:arglist, s(:lit, 3))),
:==,
s(:arglist, s(:lit, 0)))),
s(:call, nil, :i, s(:arglist)),
s(:nil))))

add_tests("flip2_method",
"Ruby" => "if 1..2.a?(b) then\n nil\nend",
"RawParseTree" => [:if,
[:flip2,
[:call, [:lit, 1], :==,
[:array, [:gvar, :$.]]],
[:call, [:lit, 2], :a?,
[:array, [:vcall, :b]]]],
[:nil],
nil],
"ParseTree" => s(:if,
s(:flip2,
s(:lit, 1),
s(:call, s(:lit, 2), :a?,
s(:arglist,
s(:call, nil, :b, s(:arglist))))),
s(:nil),
nil))

add_tests("flip3",
"Ruby" => "x = if ((i % 4) == 0)...((i % 3) == 0) then\n i\nelse\n nil\nend",
"RawParseTree" => [:lasgn,
:x,
[:if,
[:flip3,
[:call,
[:call, [:vcall, :i], :%,
[:array, [:lit, 4]]],
:==,
[:array, [:lit, 0]]],
[:call,
[:call, [:vcall, :i], :%,
[:array, [:lit, 3]]],
:==,
[:array, [:lit, 0]]]],
[:vcall, :i],
[:nil]]],
"ParseTree" => s(:lasgn,
:x,
s(:if,
s(:flip3,
s(:call,
s(:call, s(:call, nil, :i, s(:arglist)),
:%,
s(:arglist, s(:lit, 4))),
:==,
s(:arglist, s(:lit, 0))),
s(:call,
s(:call, s(:call, nil, :i, s(:arglist)),
:%,
s(:arglist, s(:lit, 3))),
:==,
s(:arglist, s(:lit, 0)))),
s(:call, nil, :i, s(:arglist)),
s(:nil))))

add_tests("for",
"Ruby" => "for o in ary do\n puts(o)\nend",
"RawParseTree" => [:for,
[:vcall, :ary],
[:lasgn, :o],
[:fcall, :puts, [:array, [:lvar, :o]]]],
"ParseTree" => s(:for,
s(:call, nil, :ary, s(:arglist)),
s(:lasgn, :o),
s(:call, nil, :puts,
s(:arglist, s(:lvar, :o)))))

add_tests("for_no_body",
"Ruby" => "for i in (0..max) do\n # do nothing\nend",
"RawParseTree" => [:for,
[:dot2, [:lit, 0], [:vcall, :max]],
[:lasgn, :i]],
"ParseTree" => s(:for,
s(:dot2,
s(:lit, 0),
s(:call, nil, :max, s(:arglist))),
s(:lasgn, :i)))

add_tests("gasgn",
"Ruby" => "$x = 42",
"RawParseTree" => [:gasgn, :$x, [:lit, 42]],
"ParseTree" => s(:gasgn, :$x, s(:lit, 42)))

add_tests("global",
"Ruby" => "$stderr",
"RawParseTree" => [:gvar, :$stderr],
"ParseTree" => s(:gvar, :$stderr))

add_tests("gvar",
"Ruby" => "$x",
"RawParseTree" => [:gvar, :$x],
"ParseTree" => s(:gvar, :$x))

add_tests("gvar_underscore",
"Ruby" => "$_",
"RawParseTree" => [:gvar, :$_],
"ParseTree" => s(:gvar, :$_))

add_tests("gvar_underscore_blah",
"Ruby" => "$__blah",
"RawParseTree" => [:gvar, :$__blah],
"ParseTree" => s(:gvar, :$__blah))

add_tests("hash",
"Ruby" => "{ 1 => 2, 3 => 4 }",
"RawParseTree" => [:hash,
[:lit, 1], [:lit, 2],
[:lit, 3], [:lit, 4]],
"ParseTree" => s(:hash,
s(:lit, 1), s(:lit, 2),
s(:lit, 3), s(:lit, 4)))

add_tests("hash_rescue",
"Ruby" => "{ 1 => (2 rescue 3) }",
"RawParseTree" => [:hash,
[:lit, 1],
[:rescue,
[:lit, 2],
[:resbody, nil, [:lit, 3]]]],
"ParseTree" => s(:hash,
s(:lit, 1),
s(:rescue,
s(:lit, 2),
s(:resbody, s(:array), s(:lit, 3)))))

add_tests("iasgn",
"Ruby" => "@a = 4",
"RawParseTree" => [:iasgn, :@a, [:lit, 4]],
"ParseTree" => s(:iasgn, :@a, s(:lit, 4)))

add_tests("if_block_condition",
"Ruby" => "if (x = 5\n(x + 1)) then\n nil\nend",
"RawParseTree" => [:if,
[:block,
[:lasgn, :x, [:lit, 5]],
[:call,
[:lvar, :x],
:+,
[:array, [:lit, 1]]]],
[:nil],
nil],
"ParseTree" => s(:if,
s(:block,
s(:lasgn, :x, s(:lit, 5)),
s(:call,
s(:lvar, :x),
:+,
s(:arglist, s(:lit, 1)))),
s(:nil),
nil))

add_tests("if_lasgn_short",
"Ruby" => "if x = obj.x then\n x.do_it\nend",
"RawParseTree" => [:if,
[:lasgn, :x,
[:call, [:vcall, :obj], :x]],
[:call,
[:lvar, :x], :do_it],
nil],
"ParseTree" => s(:if,
s(:lasgn, :x,
s(:call,
s(:call, nil, :obj, s(:arglist)),
:x, s(:arglist))),
s(:call, s(:lvar, :x), :do_it, s(:arglist)),
nil))

add_tests("if_nested",
"Ruby" => "return if false unless true",
"RawParseTree" => [:if, [:true], nil,
[:if, [:false], [:return], nil]],
"ParseTree" => s(:if, s(:true), nil,
s(:if, s(:false), s(:return), nil)))

add_tests("if_post",
"Ruby" => "a if b",
"RawParseTree" => [:if, [:vcall, :b], [:vcall, :a], nil],
"ParseTree" => s(:if, s(:call, nil, :b, s(:arglist)),
s(:call, nil, :a, s(:arglist)), nil))

add_tests("if_post_not",
"Ruby" => "a if not b",
"RawParseTree" => [:if, [:vcall, :b], nil, [:vcall, :a]],
"ParseTree" => s(:if, s(:call, nil, :b, s(:arglist)), nil,
s(:call, nil, :a, s(:arglist))),
"Ruby2Ruby" => "a unless b")

add_tests("if_pre",
"Ruby" => "if b then a end",
"RawParseTree" => [:if, [:vcall, :b], [:vcall, :a], nil],
"ParseTree" => s(:if, s(:call, nil, :b, s(:arglist)),
s(:call, nil, :a, s(:arglist)), nil),
"Ruby2Ruby" => "a if b")

add_tests("if_pre_not",
"Ruby" => "if not b then a end",
"RawParseTree" => [:if, [:vcall, :b], nil, [:vcall, :a]],
"ParseTree" => s(:if, s(:call, nil, :b, s(:arglist)), nil,
s(:call, nil, :a, s(:arglist))),
"Ruby2Ruby" => "a unless b")

add_tests("iter_call_arglist_space",
"Ruby" => "a (1) {|c|d}",
"RawParseTree" => [:iter,
[:fcall, :a, [:array, [:lit, 1]]],
[:dasgn_curr, :c],
[:vcall, :d]],
"ParseTree" => s(:iter,
s(:call, nil, :a, s(:arglist, s(:lit, 1))),
s(:lasgn, :c),
s(:call, nil, :d, s(:arglist))),
"Ruby2Ruby" => "a(1) { |c| d }")

add_tests("iter_dasgn_curr_dasgn_madness",
"Ruby" => "as.each { |a|\n b += a.b(false) }",
"RawParseTree" => [:iter,
[:call, [:vcall, :as], :each],
[:dasgn_curr, :a],
[:dasgn_curr,
:b,
[:call,
[:dvar, :b],
:+,
[:array,
[:call, [:dvar, :a], :b,
[:array, [:false]]]]]]],
"ParseTree" => s(:iter,
s(:call,
s(:call, nil, :as, s(:arglist)),
:each, s(:arglist)),
s(:lasgn, :a),
s(:lasgn, :b,
s(:call,
s(:lvar, :b),
:+,
s(:arglist,
s(:call, s(:lvar, :a), :b,
s(:arglist, s(:false))))))),
"Ruby2Ruby" => "as.each { |a| b = (b + a.b(false)) }")

add_tests("iter_downto",
"Ruby" => "3.downto(1) { |n| puts(n.to_s) }",
"RawParseTree" => [:iter,
[:call, [:lit, 3], :downto, [:array, [:lit, 1]]],
[:dasgn_curr, :n],
[:fcall, :puts,
[:array, [:call, [:dvar, :n], :to_s]]]],
"ParseTree" => s(:iter,
s(:call, s(:lit, 3), :downto,
s(:arglist, s(:lit, 1))),
s(:lasgn, :n),
s(:call, nil, :puts,
s(:arglist,
s(:call, s(:lvar, :n),
:to_s, s(:arglist))))))

add_tests("iter_each_lvar",
"Ruby" => "array = [1, 2, 3]\narray.each { |x| puts(x.to_s) }\n",
"RawParseTree" => [:block,
[:lasgn, :array,
[:array, [:lit, 1], [:lit, 2], [:lit, 3]]],
[:iter,
[:call, [:lvar, :array], :each],
[:dasgn_curr, :x],
[:fcall, :puts,
[:array, [:call, [:dvar, :x], :to_s]]]]],
"ParseTree" => s(:block,
s(:lasgn, :array,
s(:array,
s(:lit, 1), s(:lit, 2), s(:lit, 3))),
s(:iter,
s(:call, s(:lvar, :array), :each,
s(:arglist)),
s(:lasgn, :x),
s(:call, nil, :puts,
s(:arglist, s(:call, s(:lvar, :x),
:to_s, s(:arglist)))))))

add_tests("iter_each_nested",
"Ruby" => "array1 = [1, 2, 3]\narray2 = [4, 5, 6, 7]\narray1.each do |x|\n array2.each do |y|\n puts(x.to_s)\n puts(y.to_s)\n end\nend\n",
"RawParseTree" => [:block,
[:lasgn, :array1,
[:array, [:lit, 1], [:lit, 2], [:lit, 3]]],
[:lasgn, :array2,
[:array,
[:lit, 4], [:lit, 5], [:lit, 6], [:lit, 7]]],
[:iter,
[:call,
[:lvar, :array1], :each],
[:dasgn_curr, :x],
[:iter,
[:call,
[:lvar, :array2], :each],
[:dasgn_curr, :y],
[:block,
[:fcall, :puts,
[:array, [:call, [:dvar, :x], :to_s]]],
[:fcall, :puts,
[:array, [:call, [:dvar, :y], :to_s]]]]]]],
"ParseTree" => s(:block,
s(:lasgn, :array1,
s(:array,
s(:lit, 1), s(:lit, 2), s(:lit, 3))),
s(:lasgn, :array2,
s(:array,
s(:lit, 4), s(:lit, 5),
s(:lit, 6), s(:lit, 7))),
s(:iter,
s(:call,
s(:lvar, :array1), :each, s(:arglist)),
s(:lasgn, :x),
s(:iter,
s(:call,
s(:lvar, :array2), :each, s(:arglist)),
s(:lasgn, :y),
s(:block,
s(:call, nil, :puts,
s(:arglist,
s(:call, s(:lvar, :x),
:to_s, s(:arglist)))),
s(:call, nil, :puts,
s(:arglist,
s(:call, s(:lvar, :y),
:to_s, s(:arglist)))))))))

add_tests("iter_loop_empty",
"Ruby" => "loop { }",
"RawParseTree" => [:iter, [:fcall, :loop], nil],
"ParseTree" => s(:iter, s(:call, nil, :loop, s(:arglist)), nil))

add_tests("iter_masgn_2",
"Ruby" => "a { |b, c| p(c) }",
"RawParseTree" => [:iter,
[:fcall, :a],
[:masgn,
[:array, [:dasgn_curr, :b], [:dasgn_curr, :c]],
nil, nil],
[:fcall, :p, [:array, [:dvar, :c]]]],
"ParseTree" => s(:iter,
s(:call, nil, :a, s(:arglist)),
s(:masgn,
s(:array, s(:lasgn, :b), s(:lasgn, :c))),
s(:call, nil, :p, s(:arglist, s(:lvar, :c)))))

add_tests("iter_masgn_args_splat",
"Ruby" => "a { |b, c, *d| p(c) }",
"RawParseTree" => [:iter,
[:fcall, :a],
[:masgn,
[:array, [:dasgn_curr, :b], [:dasgn_curr, :c]],
[:dasgn_curr, :d], nil],
[:fcall, :p, [:array, [:dvar, :c]]]],
"ParseTree" => s(:iter,
s(:call, nil, :a, s(:arglist)),
s(:masgn,
s(:array,
s(:lasgn, :b),
s(:lasgn, :c),
s(:splat, s(:lasgn, :d)))),
s(:call, nil, :p, s(:arglist, s(:lvar, :c)))))

add_tests("iter_masgn_args_splat_no_name",
"Ruby" => "a { |b, c, *| p(c) }",
"RawParseTree" => [:iter,
[:fcall, :a],
[:masgn,
[:array, [:dasgn_curr, :b], [:dasgn_curr, :c]],
[:splat], nil],
[:fcall, :p, [:array, [:dvar, :c]]]],
"ParseTree" => s(:iter,
s(:call, nil, :a, s(:arglist)),
s(:masgn,
s(:array,
s(:lasgn, :b),
s(:lasgn, :c),
s(:splat))),
s(:call, nil, :p, s(:arglist, s(:lvar, :c)))))

add_tests("iter_masgn_splat",
"Ruby" => "a { |*c| p(c) }",
"RawParseTree" => [:iter,
[:fcall, :a],
[:masgn, nil, [:dasgn_curr, :c], nil],
[:fcall, :p, [:array, [:dvar, :c]]]],
"ParseTree" => s(:iter,
s(:call, nil, :a, s(:arglist)),
s(:masgn, s(:array, s(:splat, s(:lasgn, :c)))),
s(:call, nil, :p, s(:arglist, s(:lvar, :c)))))

add_tests("iter_masgn_splat_no_name",
"Ruby" => "a { |*| p(c) }",
"RawParseTree" => [:iter,
[:fcall, :a],
[:masgn, nil, [:splat], nil],
[:fcall, :p, [:array, [:vcall, :c]]]],
"ParseTree" => s(:iter,
s(:call, nil, :a, s(:arglist)),
s(:masgn, s(:array, s(:splat))),
s(:call, nil, :p,
s(:arglist, s(:call, nil, :c, s(:arglist))))))

add_tests("iter_shadowed_var",
"Ruby" => "a do |x|\n b do |x|\n puts x\n end\nend",
"RawParseTree" => [:iter,
[:fcall, :a],
[:dasgn_curr, :x],
[:iter,
[:fcall, :b],
[:dasgn, :x],
[:fcall, :puts, [:array, [:dvar, :x]]]]],
"ParseTree" => s(:iter,
s(:call, nil, :a, s(:arglist)),
s(:lasgn, :x),
s(:iter,
s(:call, nil, :b, s(:arglist)),
s(:lasgn, :x),
s(:call, nil, :puts,
s(:arglist, s(:lvar, :x))))),
"Ruby2Ruby" => "a { |x| b { |x| puts(x) } }")

add_tests("iter_upto",
"Ruby" => "1.upto(3) { |n| puts(n.to_s) }",
"RawParseTree" => [:iter,
[:call, [:lit, 1], :upto, [:array, [:lit, 3]]],
[:dasgn_curr, :n],
[:fcall, :puts,
[:array, [:call, [:dvar, :n], :to_s]]]],
"ParseTree" => s(:iter,
s(:call, s(:lit, 1), :upto,
s(:arglist, s(:lit, 3))),
s(:lasgn, :n),
s(:call, nil, :puts,
s(:arglist,
s(:call, s(:lvar, :n), :to_s,
s(:arglist))))))

add_tests("iter_while",
"Ruby" => "argl = 10\nwhile (argl >= 1) do\n puts(\"hello\")\n argl = (argl - 1)\nend\n",
"RawParseTree" => [:block,
[:lasgn, :argl, [:lit, 10]],
[:while,
[:call, [:lvar, :argl], :">=",
[:array, [:lit, 1]]],
[:block,
[:fcall, :puts, [:array, [:str, "hello"]]],
[:lasgn,
:argl,
[:call, [:lvar, :argl],
:"-", [:array, [:lit, 1]]]]], true]],
"ParseTree" => s(:block,
s(:lasgn, :argl, s(:lit, 10)),
s(:while,
s(:call, s(:lvar, :argl), :">=",
s(:arglist, s(:lit, 1))),
s(:block,
s(:call, nil, :puts,
s(:arglist, s(:str, "hello"))),
s(:lasgn,
:argl,
s(:call, s(:lvar, :argl), :"-",
s(:arglist, s(:lit, 1))))), true)))

add_tests("ivar",
"Ruby" => [Examples, :reader],
"RawParseTree" => [:defn, :reader, [:ivar, :@reader]],
"ParseTree" => s(:defn, :reader, # FIX should be unified?
s(:args),
s(:ivar, :@reader)),
"Ruby2Ruby" => "attr_reader :reader")

add_tests("lasgn_array",
"Ruby" => "var = [\"foo\", \"bar\"]",
"RawParseTree" => [:lasgn, :var,
[:array,
[:str, "foo"],
[:str, "bar"]]],
"ParseTree" => s(:lasgn, :var,
s(:array,
s(:str, "foo"),
s(:str, "bar"))))

add_tests("lasgn_call",
"Ruby" => "c = (2 + 3)",
"RawParseTree" => [:lasgn, :c, [:call, [:lit, 2], :+,
[:array, [:lit, 3]]]],
"ParseTree" => s(:lasgn, :c, s(:call, s(:lit, 2), :+,
s(:arglist, s(:lit, 3)))))

add_tests("lit_bool_false",
"Ruby" => "false",
"RawParseTree" => [:false],
"ParseTree" => s(:false))

add_tests("lit_bool_true",
"Ruby" => "true",
"RawParseTree" => [:true],
"ParseTree" => s(:true))

add_tests("lit_float",
"Ruby" => "1.1",
"RawParseTree" => [:lit, 1.1],
"ParseTree" => s(:lit, 1.1))

add_tests("lit_long",
"Ruby" => "1",
"RawParseTree" => [:lit, 1],
"ParseTree" => s(:lit, 1))

add_tests("lit_long_negative",
"Ruby" => "-1",
"RawParseTree" => [:lit, -1],
"ParseTree" => s(:lit, -1))

add_tests("lit_range2",
"Ruby" => "(1..10)",
"RawParseTree" => [:lit, 1..10],
"ParseTree" => s(:lit, 1..10))

add_tests("lit_range3",
"Ruby" => "(1...10)",
"RawParseTree" => [:lit, 1...10],
"ParseTree" => s(:lit, 1...10))

# TODO: discuss and decide which lit we like
# it "converts a regexp to an sexp" do
# "/blah/".to_sexp.should == s(:regex, "blah", 0)
# "/blah/i".to_sexp.should == s(:regex, "blah", 1)
# "/blah/u".to_sexp.should == s(:regex, "blah", 64)
# end

add_tests("lit_regexp",
"Ruby" => "/x/",
"RawParseTree" => [:lit, /x/],
"ParseTree" => s(:lit, /x/))

add_tests("lit_regexp_i_wwtt",
"Ruby" => 'str.split(//i)',
"RawParseTree" => [:call, [:vcall, :str], :split,
[:array, [:lit, //i]]],
"ParseTree" => s(:call, s(:call, nil, :str, s(:arglist)), :split,
s(:arglist, s(:lit, //i))))

add_tests("lit_regexp_n",
"Ruby" => "/x/n", # HACK differs on 1.9 - this is easiest
"RawParseTree" => [:lit, /x/n],
"ParseTree" => s(:lit, /x/n),
"Ruby2Ruby" => /x/n.inspect)

add_tests("lit_regexp_once",
"Ruby" => "/x/o",
"RawParseTree" => [:lit, /x/],
"ParseTree" => s(:lit, /x/),
"Ruby2Ruby" => "/x/")

add_tests("lit_sym",
"Ruby" => ":x",
"RawParseTree" => [:lit, :x],
"ParseTree" => s(:lit, :x))

add_tests("lit_sym_splat",
"Ruby" => ":\"*args\"",
"RawParseTree" => [:lit, :"*args"],
"ParseTree" => s(:lit, :"*args"))

add_tests("lvar_def_boundary",
"Ruby" => "b = 42\ndef a\n c do\n begin\n do_stuff\n rescue RuntimeError => b\n puts(b)\n end\n end\nend\n",
"RawParseTree" => [:block,
[:lasgn, :b, [:lit, 42]],
[:defn, :a,
[:scope,
[:block,
[:args],
[:iter,
[:fcall, :c],
nil,
[:rescue,
[:vcall, :do_stuff],
[:resbody,
[:array, [:const, :RuntimeError]],
[:block,
[:dasgn_curr, :b, [:gvar, :$!]],
[:fcall, :puts,
[:array, [:dvar, :b]]]]]]]]]]],
"ParseTree" => s(:block,
s(:lasgn, :b, s(:lit, 42)),
s(:defn, :a,
s(:args),
s(:scope,
s(:block,
s(:iter,
s(:call, nil, :c, s(:arglist)),
nil,
s(:rescue,
s(:call, nil, :do_stuff, s(:arglist)),
s(:resbody,
s(:array,
s(:const, :RuntimeError),
s(:lasgn, :b, s(:gvar, :$!))),
s(:call, nil, :puts,
s(:arglist,
s(:lvar, :b)))))))))))

add_tests("masgn",
"Ruby" => "a, b = c, d",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]], nil,
[:array, [:vcall, :c], [:vcall, :d]]],
"ParseTree" => s(:masgn,
s(:array, s(:lasgn, :a), s(:lasgn, :b)),
s(:array, s(:call, nil, :c, s(:arglist)),
s(:call, nil, :d, s(:arglist)))))

add_tests("masgn_argscat",
"Ruby" => "a, b, *c = 1, 2, *[3, 4]",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]],
[:lasgn, :c],
[:argscat,
[:array, [:lit, 1], [:lit, 2]],
[:array, [:lit, 3], [:lit, 4]]]],
"ParseTree" => s(:masgn,
s(:array,
s(:lasgn, :a),
s(:lasgn, :b),
s(:splat, s(:lasgn, :c))),
s(:array,
s(:lit, 1), s(:lit, 2),
s(:splat,
s(:array, s(:lit, 3), s(:lit, 4))))))

add_tests("masgn_attrasgn",
"Ruby" => "a, b.c = d, e",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a],
[:attrasgn, [:vcall, :b], :c=]], nil,
[:array, [:vcall, :d], [:vcall, :e]]],
"ParseTree" => s(:masgn,
s(:array,
s(:lasgn, :a),
s(:attrasgn,
s(:call, nil, :b, s(:arglist)),
:c=, s(:arglist))),
s(:array,
s(:call, nil, :d, s(:arglist)),
s(:call, nil, :e, s(:arglist)))))

add_tests("masgn_attrasgn_array_rhs",
"Ruby" => "a.b, a.c, _ = q",
"RawParseTree" => [:masgn,
[:array,
[:attrasgn, [:vcall, :a], :b=],
[:attrasgn, [:vcall, :a], :c=],
[:lasgn, :_]], nil,
[:to_ary, [:vcall, :q]]],
"ParseTree" => s(:masgn,
s(:array,
s(:attrasgn,
s(:call, nil, :a, s(:arglist)),
:b=, s(:arglist)),
s(:attrasgn,
s(:call, nil, :a, s(:arglist)),
:c=, s(:arglist)),
s(:lasgn, :_)),
s(:to_ary,
s(:call, nil, :q, s(:arglist)))))

add_tests("masgn_attrasgn_idx",
"Ruby" => "a, i, j = [], 1, 2\na[i], a[j] = a[j], a[i]\n",
"RawParseTree" => [:block,
[:masgn,
[:array,
[:lasgn, :a], [:lasgn, :i], [:lasgn, :j]], nil,
[:array, [:zarray], [:lit, 1], [:lit, 2]]],
[:masgn,
[:array,
[:attrasgn,
[:lvar, :a], :[]=, [:array, [:lvar, :i]]],
[:attrasgn,
[:lvar, :a], :[]=, [:array, [:lvar, :j]]]],
nil,
[:array,
[:call, [:lvar, :a], :[],
[:array, [:lvar, :j]]],
[:call, [:lvar, :a], :[],
[:array, [:lvar, :i]]]]]],
"ParseTree" => s(:block,
s(:masgn,
s(:array,
s(:lasgn, :a),
s(:lasgn, :i), s(:lasgn, :j)),
s(:array, s(:array), s(:lit, 1), s(:lit, 2))),
s(:masgn,
s(:array,
s(:attrasgn, s(:lvar, :a), :[]=,
s(:arglist, s(:lvar, :i))),
s(:attrasgn, s(:lvar, :a), :[]=,
s(:arglist, s(:lvar, :j)))),
s(:array,
s(:call, s(:lvar, :a), :[],
s(:arglist, s(:lvar, :j))),
s(:call, s(:lvar, :a), :[],
s(:arglist, s(:lvar, :i)))))))

add_tests("masgn_cdecl",
"Ruby" => "A, B, C = 1, 2, 3",
"RawParseTree" => [:masgn,
[:array, [:cdecl, :A], [:cdecl, :B],
[:cdecl, :C]], nil,
[:array, [:lit, 1], [:lit, 2], [:lit, 3]]],
"ParseTree" => s(:masgn,
s(:array, s(:cdecl, :A), s(:cdecl, :B),
s(:cdecl, :C)),
s(:array, s(:lit, 1), s(:lit, 2), s(:lit, 3))))


add_tests("masgn_iasgn",
"Ruby" => "a, @b = c, d",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:iasgn, :"@b"]], nil,
[:array, [:vcall, :c], [:vcall, :d]]],
"ParseTree" => s(:masgn,
s(:array, s(:lasgn, :a), s(:iasgn, :"@b")),
s(:array,
s(:call, nil, :c, s(:arglist)),
s(:call, nil, :d, s(:arglist)))))

add_tests("masgn_masgn",
"Ruby" => "a, (b, c) = [1, [2, 3]]",
"RawParseTree" => [:masgn,
[:array,
[:lasgn, :a],
[:masgn,
[:array,
[:lasgn, :b],
[:lasgn, :c]], nil, nil]],
nil,
[:to_ary,
[:array,
[:lit, 1],
[:array,
[:lit, 2],
[:lit, 3]]]]],
"ParseTree" => s(:masgn,
s(:array,
s(:lasgn, :a),
s(:masgn,
s(:array,
s(:lasgn, :b),
s(:lasgn, :c)))),
s(:to_ary,
s(:array,
s(:lit, 1),
s(:array,
s(:lit, 2),
s(:lit, 3))))))

add_tests("masgn_splat_lhs",
"Ruby" => "a, b, *c = d, e, f, g",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]],
[:lasgn, :c],
[:array,
[:vcall, :d], [:vcall, :e],
[:vcall, :f], [:vcall, :g]]],
"ParseTree" => s(:masgn,
s(:array,
s(:lasgn, :a),
s(:lasgn, :b),
s(:splat, s(:lasgn, :c))),
s(:array,
s(:call, nil, :d, s(:arglist)),
s(:call, nil, :e, s(:arglist)),
s(:call, nil, :f, s(:arglist)),
s(:call, nil, :g, s(:arglist)))))

add_tests("masgn_splat_rhs_1",
"Ruby" => "a, b = *c",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]],
nil,
[:splat, [:vcall, :c]]],
"ParseTree" => s(:masgn,
s(:array,
s(:lasgn, :a),
s(:lasgn, :b)),
s(:splat, s(:call, nil, :c, s(:arglist)))))

add_tests("masgn_splat_rhs_n",
"Ruby" => "a, b = c, d, *e",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]],
nil,
[:argscat,
[:array, [:vcall, :c], [:vcall, :d]],
[:vcall, :e]]],
"ParseTree" => s(:masgn,
s(:array,
s(:lasgn, :a),
s(:lasgn, :b)),
s(:array,
s(:call, nil, :c, s(:arglist)),
s(:call, nil, :d, s(:arglist)),
s(:splat, s(:call, nil, :e, s(:arglist))))))

add_tests("masgn_splat_no_name_to_ary",
"Ruby" => "a, b, * = c",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]],
[:splat],
[:to_ary, [:vcall, :c]]],
"ParseTree" => s(:masgn,
s(:array,
s(:lasgn, :a),
s(:lasgn, :b),
s(:splat)),
s(:to_ary, s(:call, nil, :c, s(:arglist)))))

add_tests("masgn_splat_no_name_trailing",
"Ruby" => "a, b, = c",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]], nil,
[:to_ary, [:vcall, :c]]],
"ParseTree" => s(:masgn,
s(:array, s(:lasgn, :a), s(:lasgn, :b)),
s(:to_ary, s(:call, nil, :c, s(:arglist)))),
"Ruby2Ruby" => "a, b = c") # TODO: check this is right

add_tests("masgn_splat_to_ary",
"Ruby" => "a, b, *c = d",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]],
[:lasgn, :c],
[:to_ary, [:vcall, :d]]],
"ParseTree" => s(:masgn,
s(:array,
s(:lasgn, :a),
s(:lasgn, :b),
s(:splat, s(:lasgn, :c))),
s(:to_ary, s(:call, nil, :d, s(:arglist)))))

add_tests("masgn_splat_to_ary2",
"Ruby" => "a, b, *c = d.e(\"f\")",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]],
[:lasgn, :c],
[:to_ary,
[:call, [:vcall, :d], :e,
[:array, [:str, 'f']]]]],
"ParseTree" => s(:masgn,
s(:array,
s(:lasgn, :a),
s(:lasgn, :b),
s(:splat, s(:lasgn, :c))),
s(:to_ary,
s(:call,
s(:call, nil, :d, s(:arglist)),
:e,
s(:arglist, s(:str, 'f'))))))

add_tests("match",
"Ruby" => "1 if /x/",
"RawParseTree" => [:if, [:match, [:lit, /x/]], [:lit, 1], nil],
"ParseTree" => s(:if, s(:match, s(:lit, /x/)), s(:lit, 1), nil))

add_tests("match2",
"Ruby" => "/x/ =~ \"blah\"",
"RawParseTree" => [:match2, [:lit, /x/], [:str, "blah"]],
"ParseTree" => s(:match2, s(:lit, /x/), s(:str, "blah")))

add_tests("match3",
"Ruby" => "\"blah\" =~ /x/",
"RawParseTree" => [:match3, [:lit, /x/], [:str, "blah"]],
"ParseTree" => s(:match3, s(:lit, /x/), s(:str, "blah")))

add_tests("module",
"Ruby" => "module X\n def y\n # do nothing\n end\nend",
"RawParseTree" => [:module, :X,
[:scope,
[:defn, :y,
[:scope, [:block, [:args], [:nil]]]]]],
"ParseTree" => s(:module, :X,
s(:scope,
s(:defn, :y,
s(:args),
s(:scope, s(:block, s(:nil)))))))

add_tests("module_scoped",
"Ruby" => "module X::Y\n c\nend",
"RawParseTree" => [:module, [:colon2, [:const, :X], :Y],
[:scope, [:vcall, :c]]],
"ParseTree" => s(:module, s(:colon2, s(:const, :X), :Y),
s(:scope, s(:call, nil, :c, s(:arglist)))))

add_tests("module_scoped3",
"Ruby" => "module ::Y\n c\nend",
"RawParseTree" => [:module, [:colon3, :Y], [:scope, [:vcall, :c]]],
"ParseTree" => s(:module,
s(:colon3, :Y),
s(:scope, s(:call, nil, :c, s(:arglist)))))

add_tests("next",
"Ruby" => "loop { next if false }",
"RawParseTree" => [:iter,
[:fcall, :loop],
nil,
[:if, [:false], [:next], nil]],
"ParseTree" => s(:iter,
s(:call, nil, :loop, s(:arglist)),
nil,
s(:if, s(:false), s(:next), nil)))

add_tests("next_arg",
"Ruby" => "loop { next 42 if false }",
"RawParseTree" => [:iter,
[:fcall, :loop],
nil,
[:if, [:false], [:next, [:lit, 42]], nil]],
"ParseTree" => s(:iter,
s(:call, nil, :loop, s(:arglist)),
nil,
s(:if, s(:false), s(:next, s(:lit, 42)), nil)))

add_tests("not",
"Ruby" => "(not true)",
"RawParseTree" => [:not, [:true]],
"ParseTree" => s(:not, s(:true)))

add_tests("nth_ref",
"Ruby" => "$1",
"RawParseTree" => [:nth_ref, 1],
"ParseTree" => s(:nth_ref, 1))

add_tests("op_asgn1",
"Ruby" => "b = []\nb[1] ||= 10\nb[2] &&= 11\nb[3] += 12\n",
"RawParseTree" => [:block,
[:lasgn, :b, [:zarray]],
[:op_asgn1, [:lvar, :b],
[:array, [:lit, 1]], :"||", [:lit, 10]],
[:op_asgn1, [:lvar, :b],
[:array, [:lit, 2]], :"&&", [:lit, 11]],
[:op_asgn1, [:lvar, :b],
[:array, [:lit, 3]], :+, [:lit, 12]]],
"ParseTree" => s(:block,
s(:lasgn, :b, s(:array)),
s(:op_asgn1, s(:lvar, :b),
s(:arglist, s(:lit, 1)), :"||", s(:lit, 10)),
s(:op_asgn1, s(:lvar, :b),
s(:arglist, s(:lit, 2)), :"&&", s(:lit, 11)),
s(:op_asgn1, s(:lvar, :b),
s(:arglist, s(:lit, 3)), :+, s(:lit, 12))))

add_tests("op_asgn1_ivar",
"Ruby" => "@b = []\n@b[1] ||= 10\n@b[2] &&= 11\n@b[3] += 12\n",
"RawParseTree" => [:block,
[:iasgn, :@b, [:zarray]],
[:op_asgn1, [:ivar, :@b],
[:array, [:lit, 1]], :"||", [:lit, 10]],
[:op_asgn1, [:ivar, :@b],
[:array, [:lit, 2]], :"&&", [:lit, 11]],
[:op_asgn1, [:ivar, :@b],
[:array, [:lit, 3]], :+, [:lit, 12]]],
"ParseTree" => s(:block,
s(:iasgn, :@b, s(:array)),
s(:op_asgn1, s(:ivar, :@b),
s(:arglist, s(:lit, 1)), :"||", s(:lit, 10)),
s(:op_asgn1, s(:ivar, :@b),
s(:arglist, s(:lit, 2)), :"&&", s(:lit, 11)),
s(:op_asgn1, s(:ivar, :@b),
s(:arglist, s(:lit, 3)), :+, s(:lit, 12))))

add_tests("op_asgn2",
"Ruby" => "s = Struct.new(:var)\nc = s.new(nil)\nc.var ||= 20\nc.var &&= 21\nc.var += 22\nc.d.e.f ||= 42\n",
"RawParseTree" => [:block,
[:lasgn, :s,
[:call, [:const, :Struct],
:new, [:array, [:lit, :var]]]],
[:lasgn, :c,
[:call, [:lvar, :s], :new, [:array, [:nil]]]],

[:op_asgn2, [:lvar, :c], :var=, :"||",
[:lit, 20]],
[:op_asgn2, [:lvar, :c], :var=, :"&&",
[:lit, 21]],
[:op_asgn2, [:lvar, :c], :var=, :+, [:lit, 22]],

[:op_asgn2,
[:call,
[:call, [:lvar, :c], :d], :e], :f=, :"||",
[:lit, 42]]],
"ParseTree" => s(:block,
s(:lasgn, :s,
s(:call, s(:const, :Struct),
:new, s(:arglist, s(:lit, :var)))),
s(:lasgn, :c,
s(:call, s(:lvar, :s),
:new, s(:arglist, s(:nil)))),
s(:op_asgn2, s(:lvar, :c),
:var=, :"||", s(:lit, 20)),
s(:op_asgn2, s(:lvar, :c),
:var=, :"&&", s(:lit, 21)),
s(:op_asgn2, s(:lvar, :c),
:var=, :+, s(:lit, 22)),
s(:op_asgn2,
s(:call,
s(:call, s(:lvar, :c), :d, s(:arglist)),
:e, s(:arglist)),
:f=, :"||", s(:lit, 42))))

add_tests("op_asgn2_self",
"Ruby" => "self.Bag ||= Bag.new",
"RawParseTree" => [:op_asgn2, [:self], :"Bag=", :"||",
[:call, [:const, :Bag], :new]],
"ParseTree" => s(:op_asgn2, s(:self), :"Bag=", :"||",
s(:call, s(:const, :Bag), :new, s(:arglist))))

add_tests("op_asgn_and",
"Ruby" => "a = 0\na &&= 2\n",
"RawParseTree" => [:block,
[:lasgn, :a, [:lit, 0]],
[:op_asgn_and,
[:lvar, :a], [:lasgn, :a, [:lit, 2]]]],
"ParseTree" => s(:block,
s(:lasgn, :a, s(:lit, 0)),
s(:op_asgn_and,
s(:lvar, :a), s(:lasgn, :a, s(:lit, 2)))))

add_tests("op_asgn_and_ivar2",
"Ruby" => "@fetcher &&= new(Gem.configuration[:http_proxy])",
"RawParseTree" => [:op_asgn_and,
[:ivar, :@fetcher],
[:iasgn,
:@fetcher,
[:fcall,
:new,
[:array,
[:call,
[:call, [:const, :Gem], :configuration],
:[],
[:array, [:lit, :http_proxy]]]]]]],
"ParseTree" => s(:op_asgn_and,
s(:ivar, :@fetcher),
s(:iasgn,
:@fetcher,
s(:call, nil,
:new,
s(:arglist,
s(:call,
s(:call, s(:const, :Gem),
:configuration,
s(:arglist)),
:[],
s(:arglist, s(:lit, :http_proxy))))))))

add_tests("op_asgn_or",
"Ruby" => "a = 0\na ||= 1\n",
"RawParseTree" => [:block,
[:lasgn, :a, [:lit, 0]],
[:op_asgn_or,
[:lvar, :a], [:lasgn, :a, [:lit, 1]]]],
"ParseTree" => s(:block,
s(:lasgn, :a, s(:lit, 0)),
s(:op_asgn_or,
s(:lvar, :a), s(:lasgn, :a, s(:lit, 1)))))

add_tests("op_asgn_or_block",
"Ruby" => "a ||= begin\n b\n rescue\n c\n end",
"RawParseTree" => [:op_asgn_or,
[:lvar, :a],
[:lasgn, :a,
[:rescue,
[:vcall, :b],
[:resbody, nil, [:vcall, :c]]]]],
"ParseTree" => s(:op_asgn_or,
s(:lvar, :a),
s(:lasgn, :a,
s(:rescue,
s(:call, nil, :b, s(:arglist)),
s(:resbody, s(:array),
s(:call, nil, :c, s(:arglist)))))),
"Ruby2Ruby" => "a ||= b rescue c")

add_tests("op_asgn_or_ivar",
"Ruby" => "@v ||= { }",
"RawParseTree" => [:op_asgn_or,
[:ivar, :@v],
[:iasgn, :@v, [:hash]]],
"ParseTree" => s(:op_asgn_or,
s(:ivar, :@v),
s(:iasgn, :@v, s(:hash))))

add_tests("op_asgn_or_ivar2",
"Ruby" => "@fetcher ||= new(Gem.configuration[:http_proxy])",
"RawParseTree" => [:op_asgn_or,
[:ivar, :@fetcher],
[:iasgn,
:@fetcher,
[:fcall,
:new,
[:array,
[:call,
[:call, [:const, :Gem], :configuration],
:[],
[:array, [:lit, :http_proxy]]]]]]],
"ParseTree" => s(:op_asgn_or,
s(:ivar, :@fetcher),
s(:iasgn,
:@fetcher,
s(:call, nil, :new,
s(:arglist,
s(:call,
s(:call, s(:const, :Gem),
:configuration,
s(:arglist)),
:[],
s(:arglist, s(:lit, :http_proxy))))))))

add_tests("or",
"Ruby" => "(a or b)",
"RawParseTree" => [:or, [:vcall, :a], [:vcall, :b]],
"ParseTree" => s(:or,
s(:call, nil, :a, s(:arglist)),
s(:call, nil, :b, s(:arglist))))

add_tests("or_big",
"Ruby" => "((a or b) or (c and d))",
"RawParseTree" => [:or,
[:or, [:vcall, :a], [:vcall, :b]],
[:and, [:vcall, :c], [:vcall, :d]]],
"ParseTree" => s(:or,
s(:or,
s(:call, nil, :a, s(:arglist)),
s(:call, nil, :b, s(:arglist))),
s(:and,
s(:call, nil, :c, s(:arglist)),
s(:call, nil, :d, s(:arglist)))))

add_tests("or_big2",
"Ruby" => "((a || b) || (c && d))",
"RawParseTree" => [:or,
[:or, [:vcall, :a], [:vcall, :b]],
[:and, [:vcall, :c], [:vcall, :d]]],
"ParseTree" => s(:or,
s(:or,
s(:call, nil, :a, s(:arglist)),
s(:call, nil, :b, s(:arglist))),
s(:and,
s(:call, nil, :c, s(:arglist)),
s(:call, nil, :d, s(:arglist)))),
"Ruby2Ruby" => "((a or b) or (c and d))")

add_tests("parse_floats_as_args",
"Ruby" => "def x(a=0.0,b=0.0)\n a+b\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args, :a, :b,
[:block,
[:lasgn, :a, [:lit, 0.0]],
[:lasgn, :b, [:lit, 0.0]]]],
[:call, [:lvar, :a], :+,
[:array, [:lvar, :b]]]]]],
"ParseTree" => s(:defn, :x,
s(:args, :a, :b,
s(:block,
s(:lasgn, :a, s(:lit, 0.0)),
s(:lasgn, :b, s(:lit, 0.0)))),
s(:scope,
s(:block,
s(:call, s(:lvar, :a), :+,
s(:arglist, s(:lvar, :b)))))),
"Ruby2Ruby" => "def x(a = 0.0, b = 0.0)\n (a + b)\nend")

add_tests("postexe",
"Ruby" => "END { 1 }",
"RawParseTree" => [:iter, [:postexe], nil, [:lit, 1]],
"ParseTree" => s(:iter, s(:postexe), nil, s(:lit, 1)))

add_tests("proc_args_0",
"Ruby" => "proc { || (x + 1) }",
"RawParseTree" => [:iter,
[:fcall, :proc],
0,
[:call, [:vcall, :x], :+, [:array, [:lit, 1]]]],
"ParseTree" => s(:iter,
s(:call, nil, :proc, s(:arglist)),
0,
s(:call,
s(:call, nil, :x, s(:arglist)),
:+,
s(:arglist, s(:lit, 1)))))

add_tests("proc_args_1",
"Ruby" => "proc { |x| (x + 1) }",
"RawParseTree" => [:iter,
[:fcall, :proc],
[:dasgn_curr, :x],
[:call, [:dvar, :x], :+, [:array, [:lit, 1]]]],
"ParseTree" => s(:iter,
s(:call, nil, :proc, s(:arglist)),
s(:lasgn, :x),
s(:call, s(:lvar, :x), :+,
s(:arglist, s(:lit, 1)))))

add_tests("proc_args_2",
"Ruby" => "proc { |x, y| (x + y) }",
"RawParseTree" => [:iter,
[:fcall, :proc],
[:masgn, [:array,
[:dasgn_curr, :x],
[:dasgn_curr, :y]], nil, nil],
[:call, [:dvar, :x], :+, [:array, [:dvar, :y]]]],
"ParseTree" => s(:iter,
s(:call, nil, :proc, s(:arglist)),
s(:masgn,
s(:array,
s(:lasgn, :x),
s(:lasgn, :y))),
s(:call, s(:lvar, :x), :+,
s(:arglist, s(:lvar, :y)))))

add_tests("proc_args_no",
"Ruby" => "proc { (x + 1) }",
"RawParseTree" => [:iter,
[:fcall, :proc],
nil,
[:call, [:vcall, :x], :+, [:array, [:lit, 1]]]],
"ParseTree" => s(:iter,
s(:call, nil, :proc, s(:arglist)),
nil,
s(:call, s(:call, nil, :x, s(:arglist)),
:+, s(:arglist, s(:lit, 1)))))

add_tests("redo",
"Ruby" => "loop { redo if false }",
"RawParseTree" => [:iter,
[:fcall, :loop], nil,
[:if, [:false], [:redo], nil]],
"ParseTree" => s(:iter,
s(:call, nil, :loop, s(:arglist)),
nil,
s(:if, s(:false), s(:redo), nil)))

# TODO: need a resbody w/ multiple classes and a splat

add_tests("rescue",
"Ruby" => "blah rescue nil",
"RawParseTree" => [:rescue,
[:vcall, :blah], [:resbody, nil, [:nil]]],
"ParseTree" => s(:rescue,
s(:call, nil, :blah, s(:arglist)),
s(:resbody, s(:array), s(:nil))))

add_tests("rescue_block_body",
"Ruby" => "begin\n a\nrescue => e\n c\n d\nend",
"RawParseTree" => [:rescue,
[:vcall, :a],
[:resbody, nil,
[:block,
[:lasgn, :e, [:gvar, :$!]],
[:vcall, :c],
[:vcall, :d]]]],
"ParseTree" => s(:rescue,
s(:call, nil, :a, s(:arglist)),
s(:resbody,
s(:array, s(:lasgn, :e, s(:gvar, :$!))),
s(:block,
s(:call, nil, :c, s(:arglist)),
s(:call, nil, :d, s(:arglist))))))

add_tests("rescue_block_body_3",
"Ruby" => "begin\n a\nrescue A\n b\nrescue B\n c\nrescue C\n d\nend",
"RawParseTree" => [:rescue,
[:vcall, :a],
[:resbody, [:array, [:const, :A]],
[:vcall, :b],
[:resbody, [:array, [:const, :B]],
[:vcall, :c],
[:resbody, [:array, [:const, :C]],
[:vcall, :d]]]]],
"ParseTree" => s(:rescue,
s(:call, nil, :a, s(:arglist)),
s(:resbody, s(:array, s(:const, :A)),
s(:call, nil, :b, s(:arglist))),
s(:resbody, s(:array, s(:const, :B)),
s(:call, nil, :c, s(:arglist))),
s(:resbody, s(:array, s(:const, :C)),
s(:call, nil, :d, s(:arglist)))))

add_tests("rescue_block_body_ivar",
"Ruby" => "begin\n a\nrescue => @e\n c\n d\nend",
"RawParseTree" => [:rescue,
[:vcall, :a],
[:resbody, nil,
[:block,
[:iasgn, :@e, [:gvar, :$!]],
[:vcall, :c],
[:vcall, :d]]]],
"ParseTree" => s(:rescue,
s(:call, nil, :a, s(:arglist)),
s(:resbody,
s(:array, s(:iasgn, :@e, s(:gvar, :$!))),
s(:block,
s(:call, nil, :c, s(:arglist)),
s(:call, nil, :d, s(:arglist))))))

add_tests("rescue_block_nada",
"Ruby" => "begin\n blah\nrescue\n # do nothing\nend",
"RawParseTree" => [:rescue, [:vcall, :blah], [:resbody, nil]],
"ParseTree" => s(:rescue,
s(:call, nil, :blah, s(:arglist)),
s(:resbody, s(:array), nil)))

add_tests("rescue_exceptions",
"Ruby" => "begin\n blah\nrescue RuntimeError => r\n # do nothing\nend",
"RawParseTree" => [:rescue,
[:vcall, :blah],
[:resbody,
[:array, [:const, :RuntimeError]],
[:lasgn, :r, [:gvar, :$!]]]],
"ParseTree" => s(:rescue,
s(:call, nil, :blah, s(:arglist)),
s(:resbody,
s(:array,
s(:const, :RuntimeError),
s(:lasgn, :r, s(:gvar, :$!))),
nil)))


add_tests("rescue_iasgn_var_empty",
"Ruby" => "begin\n 1\nrescue => @e\n # do nothing\nend",
"RawParseTree" => [:rescue,
[:lit, 1],
[:resbody, nil, [:iasgn, :@e, [:gvar, :$!]]]],
"ParseTree" => s(:rescue,
s(:lit, 1),
s(:resbody,
s(:array, s(:iasgn, :@e, s(:gvar, :$!))),
nil)))

add_tests("rescue_lasgn",
"Ruby" => "begin\n 1\nrescue\n var = 2\nend",
"RawParseTree" => [:rescue,
[:lit, 1],
[:resbody, nil, [:lasgn, :var, [:lit, 2]]]],
"ParseTree" => s(:rescue,
s(:lit, 1),
s(:resbody,
s(:array),
s(:lasgn, :var, s(:lit, 2)))),
"Ruby2Ruby" => "1 rescue var = 2")

add_tests("rescue_lasgn_var",
"Ruby" => "begin\n 1\nrescue => e\n var = 2\nend",
"RawParseTree" => [:rescue,
[:lit, 1],
[:resbody, nil,
[:block,
[:lasgn, :e, [:gvar, :$!]],
[:lasgn, :var, [:lit, 2]]]]],
"ParseTree" => s(:rescue,
s(:lit, 1),
s(:resbody,
s(:array, s(:lasgn, :e, s(:gvar, :$!))),
s(:lasgn, :var, s(:lit, 2)))))

add_tests("rescue_lasgn_var_empty",
"Ruby" => "begin\n 1\nrescue => e\n # do nothing\nend",
"RawParseTree" => [:rescue,
[:lit, 1],
[:resbody, nil, [:lasgn, :e, [:gvar, :$!]]]],
"ParseTree" => s(:rescue,
s(:lit, 1),
s(:resbody,
s(:array, s(:lasgn, :e, s(:gvar, :$!))),
nil)))

add_tests("retry",
"Ruby" => "retry",
"RawParseTree" => [:retry],
"ParseTree" => s(:retry))

add_tests("return_0",
"Ruby" => "return",
"RawParseTree" => [:return],
"ParseTree" => s(:return))

add_tests("return_1",
"Ruby" => "return 1",
"RawParseTree" => [:return, [:lit, 1]],
"ParseTree" => s(:return, s(:lit, 1)))

add_tests("return_1_splatted",
"Ruby" => "return *1",
"RawParseTree" => [:return, [:svalue, [:splat, [:lit, 1]]]],
"ParseTree" => s(:return, s(:svalue, s(:splat, s(:lit, 1)))))

add_tests("return_n",
"Ruby" => "return 1, 2, 3",
"RawParseTree" => [:return, [:array,
[:lit, 1], [:lit, 2], [:lit, 3]]],
"ParseTree" => s(:return, s(:array,
s(:lit, 1), s(:lit, 2), s(:lit, 3))),
"Ruby2Ruby" => "return [1, 2, 3]")

add_tests("sclass",
"Ruby" => "class << self\n 42\nend",
"RawParseTree" => [:sclass, [:self], [:scope, [:lit, 42]]],
"ParseTree" => s(:sclass, s(:self), s(:scope, s(:lit, 42))))

add_tests("sclass_trailing_class",
"Ruby" => "class A\n class << self\n a\n end\n class B\n end\nend",
"RawParseTree" => [:class, :A, nil,
[:scope,
[:block,
[:sclass, [:self], [:scope, [:vcall, :a]]],
[:class, :B, nil, [:scope]]]]],
"ParseTree" => s(:class, :A, nil,
s(:scope,
s(:block,
s(:sclass, s(:self),
s(:scope,
s(:call, nil, :a, s(:arglist)))),
s(:class, :B, nil, s(:scope))))))

add_tests("splat",
"Ruby" => "def x(*b)\n a(*b)\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args, :"*b"],
[:fcall, :a, [:splat, [:lvar, :b]]]]]],
"ParseTree" => s(:defn, :x,
s(:args, :"*b"),
s(:scope,
s(:block,
s(:call, nil, :a,
s(:arglist, s(:splat, s(:lvar, :b))))))))

add_tests("splat_array",
"Ruby" => "[*[1]]",
"RawParseTree" => [:splat, [:array, [:lit, 1]]],
"ParseTree" => s(:array, s(:splat, s(:array, s(:lit, 1)))))

add_tests("splat_break",
"Ruby" => "break *[1]",
"RawParseTree" => [:break, [:svalue, [:splat, [:array, [:lit, 1]]]]],
"ParseTree" => s(:break, s(:svalue, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_break_array",
"Ruby" => "break [*[1]]",
"RawParseTree" => [:break, [:splat, [:array, [:lit, 1]]]],
"ParseTree" => s(:break, s(:array, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_fcall",
"Ruby" => "meth(*[1])",
"RawParseTree" => [:fcall, :meth,
[:splat, [:array, [:lit, 1]]]],
"ParseTree" => s(:call, nil, :meth,
s(:arglist, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_fcall_array",
"Ruby" => "meth([*[1]])",
"RawParseTree" => [:fcall, :meth,
[:array, [:splat, [:array, [:lit, 1]]]]],
"ParseTree" => s(:call, nil, :meth,
s(:arglist,
s(:array, s(:splat, s(:array, s(:lit, 1)))))))

add_tests("splat_lasgn",
"Ruby" => "x = *[1]",
"RawParseTree" => [:lasgn, :x, [:svalue, [:splat, [:array, [:lit, 1]]]]],
"ParseTree" => s(:lasgn, :x, s(:svalue, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_lasgn_array",
"Ruby" => "x = [*[1]]",
"RawParseTree" => [:lasgn, :x, [:splat, [:array, [:lit, 1]]]],
"ParseTree" => s(:lasgn, :x, s(:array, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_lit_1",
"Ruby" => "[*1]",
"RawParseTree" => [:splat, [:lit, 1]], # UGH - damn MRI
"ParseTree" => s(:array, s(:splat, s(:lit, 1))))

add_tests("splat_lit_n",
"Ruby" => "[1, *2]",
"RawParseTree" => [:argscat, [:array, [:lit, 1]], [:lit, 2]],
"ParseTree" => s(:array, s(:lit, 1), s(:splat, s(:lit, 2))))

add_tests("splat_next",
"Ruby" => "next *[1]",
"RawParseTree" => [:next, [:svalue, [:splat, [:array, [:lit, 1]]]]],
"ParseTree" => s(:next, s(:svalue, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_next_array",
"Ruby" => "next [*[1]]",
"RawParseTree" => [:next, [:splat, [:array, [:lit, 1]]]],
"ParseTree" => s(:next, s(:array, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_return",
"Ruby" => "return *[1]",
"RawParseTree" => [:return, [:svalue, [:splat, [:array, [:lit, 1]]]]],
"ParseTree" => s(:return, s(:svalue, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_return_array",
"Ruby" => "return [*[1]]",
"RawParseTree" => [:return, [:splat, [:array, [:lit, 1]]]],
"ParseTree" => s(:return, s(:array, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_super",
"Ruby" => "super(*[1])",
"RawParseTree" => [:super, [:splat, [:array, [:lit, 1]]]],
"ParseTree" => s(:super, s(:splat, s(:array, s(:lit, 1)))))

add_tests("splat_super_array",
"Ruby" => "super([*[1]])",
"RawParseTree" => [:super, [:array, [:splat, [:array, [:lit, 1]]]]],
"ParseTree" => s(:super, s(:array, s(:splat, s(:array, s(:lit, 1))))))

add_tests("splat_yield",
"Ruby" => "yield(*[1])",
"RawParseTree" => [:yield, [:splat, [:array, [:lit, 1]]]],
"ParseTree" => s(:yield, s(:splat, s(:array, s(:lit, 1)))))

add_tests("splat_yield_array",
"Ruby" => "yield([*[1]])",
"RawParseTree" => [:yield, [:splat, [:array, [:lit, 1]]], true],
"ParseTree" => s(:yield, s(:array, s(:splat, s(:array, s(:lit, 1))))))

add_tests("str",
"Ruby" => '"x"',
"RawParseTree" => [:str, "x"],
"ParseTree" => s(:str, "x"))

add_tests("str_concat_newline", # FIX? make prettier? possible?
"Ruby" => '"before" \\
" after"',
"RawParseTree" => [:str, "before after"],
"ParseTree" => s(:str, "before after"),
"Ruby2Ruby" => '"before after"')

add_tests("str_concat_space",
"Ruby" => '"before" " after"',
"RawParseTree" => [:str, "before after"],
"ParseTree" => s(:str, "before after"),
"Ruby2Ruby" => '"before after"')

add_tests("str_heredoc",
"Ruby" => "<<'EOM'\n blah\nblah\nEOM",
"RawParseTree" => [:str, " blah\nblah\n"],
"ParseTree" => s(:str, " blah\nblah\n"),
"Ruby2Ruby" => "\" blah\\nblah\\n\"")

add_tests("str_heredoc_call",
"Ruby" => "<<'EOM'.strip\n blah\nblah\nEOM",
"RawParseTree" => [:call, [:str, " blah\nblah\n"], :strip],
"ParseTree" => s(:call, s(:str, " blah\nblah\n"),
:strip, s(:arglist)),
"Ruby2Ruby" => "\" blah\\nblah\\n\".strip")

add_tests("str_heredoc_double",
"Ruby" => "a += <<-H1 + b + <<-H2\n first\nH1\n second\nH2",
"RawParseTree" => [:lasgn, :a,
[:call,
[:lvar, :a],
:+,
[:array,
[:call,
[:call, [:str, " first\n"], :+,
[:array, [:vcall, :b]]],
:+,
[:array, [:str, " second\n"]]]]]],
"ParseTree" => s(:lasgn, :a,
s(:call,
s(:lvar, :a),
:+,
s(:arglist,
s(:call,
s(:call, s(:str, " first\n"), :+,
s(:arglist,
s(:call, nil, :b, s(:arglist)))),
:+,
s(:arglist, s(:str, " second\n")))))),
"Ruby2Ruby" => "a = (a + ((\" first\\n\" + b) + \" second\\n\"))")

add_tests("str_heredoc_empty", # yes... tarded
"Ruby" => "<<'EOM'\nEOM",
"RawParseTree" => [:str, ""],
"ParseTree" => s(:str, ""),
"Ruby2Ruby" => '""')

add_tests("str_heredoc_indent",
"Ruby" => "<<-EOM\n blah\nblah\n\n EOM",
"RawParseTree" => [:str, " blah\nblah\n\n"],
"ParseTree" => s(:str, " blah\nblah\n\n"),
"Ruby2Ruby" => "\" blah\\nblah\\n\\n\"")

add_tests("str_interp_file",
"Ruby" => '"file = #{__FILE__}\n"',
"RawParseTree" => [:str, "file = (string)\n"],
"ParseTree" => s(:str, "file = (string)\n"),
"Ruby2Ruby" => '"file = (string)\\n"')

add_tests("structure_extra_block_for_dvar_scoping",
"Ruby" => "a.b do |c, d|\n unless e.f(c) then\n g = false\n d.h { |x, i| g = true }\n end\nend",
"RawParseTree" => [:iter,
[:call, [:vcall, :a], :b],
[:masgn, [:array,
[:dasgn_curr, :c],
[:dasgn_curr, :d]], nil, nil],
[:if,
[:call, [:vcall, :e], :f,
[:array, [:dvar, :c]]],
nil,
[:block,
[:dasgn_curr, :g, [:false]],
[:iter,
[:call, [:dvar, :d], :h],
[:masgn, [:array,
[:dasgn_curr, :x],
[:dasgn_curr, :i]], nil, nil],
[:dasgn, :g, [:true]]]]]],
"ParseTree" => s(:iter,
s(:call,
s(:call, nil, :a, s(:arglist)),
:b, s(:arglist)),
s(:masgn, s(:array,
s(:lasgn, :c),
s(:lasgn, :d))),
s(:if,
s(:call, s(:call, nil, :e, s(:arglist)), :f,
s(:arglist, s(:lvar, :c))),
nil,
s(:block,
s(:lasgn, :g, s(:false)),
s(:iter,
s(:call, s(:lvar, :d), :h, s(:arglist)),
s(:masgn, s(:array,
s(:lasgn, :x),
s(:lasgn, :i))),
s(:lasgn, :g, s(:true)))))))

add_tests("structure_remove_begin_1",
"Ruby" => "a << begin\n b\n rescue\n c\n end",
"RawParseTree" => [:call, [:vcall, :a], :<<,
[:array, [:rescue, [:vcall, :b],
[:resbody, nil, [:vcall, :c]]]]],
"ParseTree" => s(:call, s(:call, nil, :a, s(:arglist)), :<<,
s(:arglist,
s(:rescue,
s(:call, nil, :b, s(:arglist)),
s(:resbody, s(:array),
s(:call, nil, :c, s(:arglist)))))),
"Ruby2Ruby" => "(a << b rescue c)")

add_tests("structure_remove_begin_2",
"Ruby" => "a = if c\n begin\n b\n rescue\n nil\n end\n end\na",
"RawParseTree" => [:block,
[:lasgn,
:a,
[:if, [:vcall, :c],
[:rescue,
[:vcall, :b],
[:resbody, nil, [:nil]]],
nil]],
[:lvar, :a]],
"ParseTree" => s(:block,
s(:lasgn,
:a,
s(:if, s(:call, nil, :c, s(:arglist)),
s(:rescue, s(:call, nil, :b, s(:arglist)),
s(:resbody,
s(:array), s(:nil))),
nil)),
s(:lvar, :a)),
"Ruby2Ruby" => "a = b rescue nil if c\na\n") # OMG that's awesome

add_tests("structure_unused_literal_wwtt",
"Ruby" => "\"prevent the above from infecting rdoc\"\n\nmodule Graffle\nend",
"RawParseTree" => [:module, :Graffle, [:scope]],
"ParseTree" => s(:module, :Graffle, s(:scope)),
"Ruby2Ruby" => "module Graffle\nend")

add_tests("super_0",
"Ruby" => "def x\n super()\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block, [:args], [:super]]]],
"ParseTree" => s(:defn, :x,
s(:args),
s(:scope, s(:block, s(:super)))))

add_tests("super_1",
"Ruby" => "def x\n super(4)\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args],
[:super, [:array, [:lit, 4]]]]]],
"ParseTree" => s(:defn, :x,
s(:args),
s(:scope,
s(:block,
s(:super, s(:lit, 4))))))

add_tests("super_1_array",
"Ruby" => "def x\n super([24, 42])\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args],
[:super,
[:array,
[:array, [:lit, 24], [:lit, 42]]]]]]],
"ParseTree" => s(:defn, :x,
s(:args),
s(:scope,
s(:block,
s(:super, s(:array,
s(:lit, 24),
s(:lit, 42)))))))

add_tests("super_block_pass",
"Ruby" => "super(a, &b)",
"RawParseTree" => [:block_pass,
[:vcall, :b], [:super, [:array, [:vcall, :a]]]],
"ParseTree" => s(:super,
s(:call, nil, :a, s(:arglist)),
s(:block_pass,
s(:call, nil, :b, s(:arglist)))))

add_tests("super_block_splat",
"Ruby" => "super(a, *b)",
"RawParseTree" => [:super,
[:argscat,
[:array, [:vcall, :a]],
[:vcall, :b]]],
"ParseTree" => s(:super,
s(:call, nil, :a, s(:arglist)),
s(:splat, s(:call, nil, :b, s(:arglist)))))

add_tests("super_n",
"Ruby" => "def x\n super(24, 42)\nend",
"RawParseTree" => [:defn, :x,
[:scope,
[:block,
[:args],
[:super, [:array, [:lit, 24], [:lit, 42]]]]]],
"ParseTree" => s(:defn, :x,
s(:args),
s(:scope,
s(:block,
s(:super, s(:lit, 24), s(:lit, 42))))))

add_tests("svalue",
"Ruby" => "a = *b",
"RawParseTree" => [:lasgn, :a, [:svalue, [:splat, [:vcall, :b]]]],
"ParseTree" => s(:lasgn, :a,
s(:svalue,
s(:splat, s(:call, nil, :b, s(:arglist))))))

add_tests("to_ary",
"Ruby" => "a, b = c",
"RawParseTree" => [:masgn,
[:array, [:lasgn, :a], [:lasgn, :b]], nil,
[:to_ary, [:vcall, :c]]],
"ParseTree" => s(:masgn,
s(:array, s(:lasgn, :a), s(:lasgn, :b)),
s(:to_ary, s(:call, nil, :c, s(:arglist)))))

add_tests("true",
"Ruby" => "true",
"RawParseTree" => [:true],
"ParseTree" => s(:true))

add_tests("undef",
"Ruby" => "undef :x",
"RawParseTree" => [:undef, [:lit, :x]],
"ParseTree" => s(:undef, s(:lit, :x)))

add_tests("undef_2",
"Ruby" => "undef :x, :y",
"RawParseTree" => [:block,
[:undef, [:lit, :x]],
[:undef, [:lit, :y]]],
"ParseTree" => s(:block,
s(:undef, s(:lit, :x)),
s(:undef, s(:lit, :y))),
"Ruby2Ruby" => "undef :x\nundef :y\n")

add_tests("undef_3",
"Ruby" => "undef :x, :y, :z",
"RawParseTree" => [:block,
[:undef, [:lit, :x]],
[:undef, [:lit, :y]],
[:undef, [:lit, :z]]],
"ParseTree" => s(:block,
s(:undef, s(:lit, :x)),
s(:undef, s(:lit, :y)),
s(:undef, s(:lit, :z))),
"Ruby2Ruby" => "undef :x\nundef :y\nundef :z\n")

add_tests("undef_block_1",
"Ruby" => "f1\nundef :x\n", # TODO: don't like the extra return
"RawParseTree" => [:block,
[:vcall, :f1],
[:undef, [:lit, :x]]],
"ParseTree" => s(:block,
s(:call, nil, :f1, s(:arglist)),
s(:undef, s(:lit, :x))))

add_tests("undef_block_2",
"Ruby" => "f1\nundef :x, :y",
"RawParseTree" => [:block,
[:vcall, :f1],
[:block,
[:undef, [:lit, :x]],
[:undef, [:lit, :y]],
]],
"ParseTree" => s(:block,
s(:call, nil, :f1, s(:arglist)),
s(:block,
s(:undef, s(:lit, :x)),
s(:undef, s(:lit, :y)))),
"Ruby2Ruby" => "f1\n(undef :x\nundef :y)\n")

add_tests("undef_block_3",
"Ruby" => "f1\nundef :x, :y, :z",
"RawParseTree" => [:block,
[:vcall, :f1],
[:block,
[:undef, [:lit, :x]],
[:undef, [:lit, :y]],
[:undef, [:lit, :z]],
]],
"ParseTree" => s(:block,
s(:call, nil, :f1, s(:arglist)),
s(:block,
s(:undef, s(:lit, :x)),
s(:undef, s(:lit, :y)),
s(:undef, s(:lit, :z)))),
"Ruby2Ruby" => "f1\n(undef :x\nundef :y\nundef :z)\n")

add_tests("undef_block_3_post",
"Ruby" => "undef :x, :y, :z\nf2",
"RawParseTree" => [:block,
[:undef, [:lit, :x]],
[:undef, [:lit, :y]],
[:undef, [:lit, :z]],
[:vcall, :f2]],
"ParseTree" => s(:block,
s(:undef, s(:lit, :x)),
s(:undef, s(:lit, :y)),
s(:undef, s(:lit, :z)),
s(:call, nil, :f2, s(:arglist))),
"Ruby2Ruby" => "undef :x\nundef :y\nundef :z\nf2\n")

add_tests("undef_block_wtf",
"Ruby" => "f1\nundef :x, :y, :z\nf2",
"RawParseTree" => [:block,
[:vcall, :f1],
[:block,
[:undef, [:lit, :x]],
[:undef, [:lit, :y]],
[:undef, [:lit, :z]]],
[:vcall, :f2]],
"ParseTree" => s(:block,
s(:call, nil, :f1, s(:arglist)),
s(:block,
s(:undef, s(:lit, :x)),
s(:undef, s(:lit, :y)),
s(:undef, s(:lit, :z))),
s(:call, nil, :f2, s(:arglist))),
"Ruby2Ruby" => "f1\n(undef :x\nundef :y\nundef :z)\nf2\n")


add_tests("unless_post",
"Ruby" => "a unless b",
"RawParseTree" => [:if, [:vcall, :b], nil, [:vcall, :a]],
"ParseTree" => s(:if, s(:call, nil, :b, s(:arglist)), nil,
s(:call, nil, :a, s(:arglist))))

add_tests("unless_post_not",
"Ruby" => "a unless not b",
"RawParseTree" => [:if, [:vcall, :b], [:vcall, :a], nil],
"ParseTree" => s(:if, s(:call, nil, :b, s(:arglist)),
s(:call, nil, :a, s(:arglist)), nil),
"Ruby2Ruby" => "a if b")

add_tests("unless_pre",
"Ruby" => "unless b then a end",
"RawParseTree" => [:if, [:vcall, :b], nil, [:vcall, :a]],
"ParseTree" => s(:if, s(:call, nil, :b, s(:arglist)), nil,
s(:call, nil, :a, s(:arglist))),
"Ruby2Ruby" => "a unless b")

add_tests("unless_pre_not",
"Ruby" => "unless not b then a end",
"RawParseTree" => [:if, [:vcall, :b], [:vcall, :a], nil],
"ParseTree" => s(:if, s(:call, nil, :b, s(:arglist)),
s(:call, nil, :a, s(:arglist)), nil),
"Ruby2Ruby" => "a if b")

add_tests("until_post",
"Ruby" => "begin\n (1 + 1)\nend until false",
"RawParseTree" => [:until, [:false],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], false],
"ParseTree" => s(:until, s(:false),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), false))

add_tests("until_post_not",
"Ruby" => "begin\n (1 + 1)\nend until not true",
"RawParseTree" => [:while, [:true],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], false],
"ParseTree" => s(:while, s(:true),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), false),
"Ruby2Ruby" => "begin\n (1 + 1)\nend while true")

add_tests("until_pre",
"Ruby" => "until false do\n (1 + 1)\nend",
"RawParseTree" => [:until, [:false],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], true],
"ParseTree" => s(:until, s(:false),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), true))

add_tests("until_pre_mod",
"Ruby" => "(1 + 1) until false",
"RawParseTree" => [:until, [:false],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], true],
"ParseTree" => s(:until, s(:false),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), true),
"Ruby2Ruby" => "until false do\n (1 + 1)\nend")

add_tests("until_pre_not",
"Ruby" => "until not true do\n (1 + 1)\nend",
"RawParseTree" => [:while, [:true],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], true],
"ParseTree" => s(:while, s(:true),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), true),
"Ruby2Ruby" => "while true do\n (1 + 1)\nend")

add_tests("until_pre_not_mod",
"Ruby" => "(1 + 1) until not true",
"RawParseTree" => [:while, [:true],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], true],
"ParseTree" => s(:while, s(:true),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), true),
"Ruby2Ruby" => "while true do\n (1 + 1)\nend")

add_tests("valias",
"Ruby" => "alias $y $x",
"RawParseTree" => [:valias, :$y, :$x],
"ParseTree" => s(:valias, :$y, :$x))

add_tests("vcall",
"Ruby" => "method",
"RawParseTree" => [:vcall, :method],
"ParseTree" => s(:call, nil, :method, s(:arglist)))

add_tests("while_post",
"Ruby" => "begin\n (1 + 1)\nend while false",
"RawParseTree" => [:while, [:false],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], false],
"ParseTree" => s(:while, s(:false),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), false))

add_tests("while_post2",
"Ruby" => "begin\n (1 + 2)\n (3 + 4)\nend while false",
"RawParseTree" => [:while, [:false],
[:block,
[:call, [:lit, 1], :+, [:array, [:lit, 2]]],
[:call, [:lit, 3], :+, [:array, [:lit, 4]]]],
false],
"ParseTree" => s(:while, s(:false),
s(:block,
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 2))),
s(:call, s(:lit, 3), :+,
s(:arglist, s(:lit, 4)))),
false))

add_tests("while_post_not",
"Ruby" => "begin\n (1 + 1)\nend while not true",
"RawParseTree" => [:until, [:true],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], false],
"ParseTree" => s(:until, s(:true),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), false),
"Ruby2Ruby" => "begin\n (1 + 1)\nend until true")

add_tests("while_pre",
"Ruby" => "while false do\n (1 + 1)\nend",
"RawParseTree" => [:while, [:false],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], true],
"ParseTree" => s(:while, s(:false),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), true))

add_tests("while_pre_mod",
"Ruby" => "(1 + 1) while false",
"RawParseTree" => [:while, [:false],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], true],
"ParseTree" => s(:while, s(:false),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), true),
"Ruby2Ruby" => "while false do\n (1 + 1)\nend") # FIX can be one liner

add_tests("while_pre_nil",
"Ruby" => "while false do\nend",
"RawParseTree" => [:while, [:false], nil, true],
"ParseTree" => s(:while, s(:false), nil, true))

add_tests("while_pre_not",
"Ruby" => "while not true do\n (1 + 1)\nend",
"RawParseTree" => [:until, [:true],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], true],
"ParseTree" => s(:until, s(:true),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), true),
"Ruby2Ruby" => "until true do\n (1 + 1)\nend")

add_tests("while_pre_not_mod",
"Ruby" => "(1 + 1) while not true",
"RawParseTree" => [:until, [:true],
[:call, [:lit, 1], :+,
[:array, [:lit, 1]]], true],
"ParseTree" => s(:until, s(:true),
s(:call, s(:lit, 1), :+,
s(:arglist, s(:lit, 1))), true),
"Ruby2Ruby" => "until true do\n (1 + 1)\nend") # FIX

add_tests("xstr",
"Ruby" => "`touch 5`",
"RawParseTree" => [:xstr, 'touch 5'],
"ParseTree" => s(:xstr, 'touch 5'))

add_tests("yield_0",
"Ruby" => "yield",
"RawParseTree" => [:yield],
"ParseTree" => s(:yield))

add_tests("yield_1",
"Ruby" => "yield(42)",
"RawParseTree" => [:yield, [:lit, 42]],
"ParseTree" => s(:yield, s(:lit, 42)))

add_tests("yield_array_0",
"Ruby" => "yield([])",
"RawParseTree" => [:yield, [:zarray], true],
"ParseTree" => s(:yield, s(:array)))

add_tests("yield_array_1",
"Ruby" => "yield([42])",
"RawParseTree" => [:yield, [:array, [:lit, 42]], true],
"ParseTree" => s(:yield, s(:array, s(:lit, 42))))

add_tests("yield_array_n",
"Ruby" => "yield([42, 24])",
"RawParseTree" => [:yield, [:array, [:lit, 42], [:lit, 24]], true],
"ParseTree" => s(:yield, s(:array, s(:lit, 42), s(:lit, 24))))

add_tests("yield_n",
"Ruby" => "yield(42, 24)",
"RawParseTree" => [:yield, [:array, [:lit, 42], [:lit, 24]]],
"ParseTree" => s(:yield, s(:lit, 42), s(:lit, 24)))

add_tests("zarray",
"Ruby" => "a = []",
"RawParseTree" => [:lasgn, :a, [:zarray]],
"ParseTree" => s(:lasgn, :a, s(:array)))

add_tests("zsuper",
"Ruby" => "def x\n super\nend",
"RawParseTree" => [:defn, :x,
[:scope, [:block, [:args], [:zsuper]]]],
"ParseTree" => s(:defn, :x, s(:args),
s(:scope, s(:block, s(:zsuper)))))
end
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