switch tests, parse switch non-cascade expression

Author: leafo

moonscript/parse.lua

@@ -340,6 +340,7 @@ local build_grammar = wrap_env(function()
 
 		SimpleValue =
 			If +
+			Switch +
 			With +
 			ForEach + For + While +
 			sym"-" * -SomeSpace * Exp / mark"minus" +

moonscript/transform.lua

@@ -494,7 +494,6 @@ Statement = Transformer({
   end,
   switch = function(self, node, ret)
     local _, exp, conds = unpack(node)
-    print("compiling switch", ret)
     local exp_name = NameProxy("exp")
     local convert_cond
     convert_cond = function(cond)

moonscript/transform.moon

@@ -269,8 +269,6 @@ Statement = Transformer {
 
   switch: (node, ret) =>
     _, exp, conds = unpack node
-    print "compiling switch", ret
-
     exp_name = NameProxy "exp"
 
     -- convert switch conds into if statment conds

tests/inputs/switch.moon

@@ -0,0 +1,44 @@
+
+switch value
+  when "cool"
+    print "hello world"
+
+
+switch value
+  when "cool"
+    print "hello world"
+  else
+    print "okay rad"
+
+
+switch value
+  when "cool"
+    print "hello world"
+  when "yeah"
+    [[FFFF]] + [[MMMM]]
+  when 2323 + 32434
+    print "okay"
+  else
+    print "okay rad"
+
+out = switch value
+  when "cool" then print "hello world"
+  else print "okay rad"
+
+out = switch value
+  when "cool" then xxxx
+  when "umm" then 34340
+  else error "this failed big time"
+
+with something
+  switch \value!
+    when .okay
+      "world"
+    else
+      "yesh"
+
+fix this
+call_func switch something
+  when 1 then "yes"
+  else "no"
+

tests/outputs/switch.lua

@@ -0,0 +1,53 @@
+local _exp_0 = value
+if "cool" == _exp_0 then
+  print("hello world")
+end
+local _exp_1 = value
+if "cool" == _exp_1 then
+  print("hello world")
+else
+  print("okay rad")
+end
+local _exp_2 = value
+if "cool" == _exp_2 then
+  print("hello world")
+elseif "yeah" == _exp_2 then
+  local _ = [[FFFF]] + [[MMMM]]
+elseif 2323 + 32434 == _exp_2 then
+  print("okay")
+else
+  print("okay rad")
+end
+local out
+local _exp_3 = value
+if "cool" == _exp_3 then
+  out = print("hello world")
+else
+  out = print("okay rad")
+end
+local _exp_4 = value
+if "cool" == _exp_4 then
+  out = xxxx
+elseif "umm" == _exp_4 then
+  out = 34340
+else
+  out = error("this failed big time")
+end
+do
+  local _with_0 = something
+  local _exp_5 = _with_0:value()
+  if _with_0.okay == _exp_5 then
+    local _ = "world"
+  else
+    local _ = "yesh"
+  end
+end
+fix(this)
+call_func((function()
+  local _exp_5 = something
+  if 1 == _exp_5 then
+    return "yes"
+  else
+    return "no"
+  end
+end)())

todo

@@ -2,6 +2,7 @@
 
 - don't reuse _, put a local on it, so we don't keep around trash
 
+-- swithc X with Func
 
 - or= and=