remove one more redundant 'do' block from destructuring.

7 files changed, 105 insertions, 167 deletions

diff --git a/spec/outputs/unicode/assign.lua b/spec/outputs/unicode/assign.lua
index 16ece1a..cb53159 100644
--- a/spec/outputs/unicode/assign.lua
+++ b/spec/outputs/unicode/assign.lua
@@ -54,15 +54,11 @@ return __u65e0_u6548_u53d8_u91cf(function()
                 local _u5143_u7d20a, _u5143_u7d20b
                 local _exp_0 = _u5bf9_u8c61c
                 if "a" == _exp_0 then
-                        do
-                                local _obj_0 = _u5b57_u5178
-                                _u5143_u7d20a, _u5143_u7d20b = _obj_0[1], _obj_0[2]
-                        end
+                        local _obj_0 = _u5b57_u5178
+                        _u5143_u7d20a, _u5143_u7d20b = _obj_0[1], _obj_0[2]
                 elseif "b" == _exp_0 then
-                        do
-                                local _obj_0 = _u51fd_u6570()
-                                _u5143_u7d20a, _u5143_u7d20b = _obj_0[1], _obj_0[2]
-                        end
+                        local _obj_0 = _u51fd_u6570()
+                        _u5143_u7d20a, _u5143_u7d20b = _obj_0[1], _obj_0[2]
                 end
         end
         do
diff --git a/spec/outputs/unicode/backcall.lua b/spec/outputs/unicode/backcall.lua
index f4bd5a3..85d7592 100644
--- a/spec/outputs/unicode/backcall.lua
+++ b/spec/outputs/unicode/backcall.lua
@@ -82,15 +82,13 @@ end
 do
         local _u7ed3_u679c, _u6d88_u606f
         do
-                do
-                        local _obj_0 = _u5f02_u6b65_u63a5_u6536("文件名.txt", function(_u6570_u636e)
-                                _u6253_u5370(_u6570_u636e)
-                                return _u5f02_u6b65_u5904_u7406(_u6570_u636e, function(_u4fe1_u606f)
-                                        return _u68c0_u67e5(_u4fe1_u606f)
-                                end)
+                local _obj_0 = _u5f02_u6b65_u63a5_u6536("文件名.txt", function(_u6570_u636e)
+                        _u6253_u5370(_u6570_u636e)
+                        return _u5f02_u6b65_u5904_u7406(_u6570_u636e, function(_u4fe1_u606f)
+                                return _u68c0_u67e5(_u4fe1_u606f)
                         end)
-                        _u7ed3_u679c, _u6d88_u606f = _obj_0["结果"], _obj_0["消息"]
-                end
+                end)
+                _u7ed3_u679c, _u6d88_u606f = _obj_0["结果"], _obj_0["消息"]
         end
         _u6253_u5370(_u7ed3_u679c, _u6d88_u606f)
         local _u603b_u5927_u5c0f = _u5408_u5e76(((function()
diff --git a/spec/outputs/unicode/cond.lua b/spec/outputs/unicode/cond.lua
index 2b5af8a..7229001 100644
--- a/spec/outputs/unicode/cond.lua
+++ b/spec/outputs/unicode/cond.lua
@@ -320,10 +320,8 @@ do
                         __u6a21_u5757 = _des_0
                         local _u4e1c_u897f = __u6a21_u5757["东西"]
                         local a_u529f_u80fd, b_u529f_u80fd
-                        do
-                                local _obj_0 = __u6a21_u5757
-                                a_u529f_u80fd, b_u529f_u80fd = _obj_0["a功能"], _obj_0["b功能"]
-                        end
+                        local _obj_0 = __u6a21_u5757
+                        a_u529f_u80fd, b_u529f_u80fd = _obj_0["a功能"], _obj_0["b功能"]
                 end
         end
 end
diff --git a/spec/outputs/unicode/destructure.lua b/spec/outputs/unicode/destructure.lua
index 7263d49..e1cd6ae 100644
--- a/spec/outputs/unicode/destructure.lua
+++ b/spec/outputs/unicode/destructure.lua
@@ -10,10 +10,8 @@ do
                 _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c = _obj_0[1][1], _obj_0[2], _obj_0[3][1]
         end
         local _u4f60_u597d, _u4e16_u754c
-        do
-                local _obj_0 = _u503c
-                _u4f60_u597d, _u4e16_u754c = _obj_0["你好"], _obj_0["世界"]
-        end
+        local _obj_0 = _u503c
+        _u4f60_u597d, _u4e16_u754c = _obj_0["你好"], _obj_0["世界"]
 end
 do
         local _u5426, _u4e1c_u897f
@@ -50,17 +48,13 @@ do
         end
         do
                 _u53d8_u91cfc = nil
-                do
-                        local _obj_0 = _u8868
-                        _u5b57_u6bb5a, _u5b57_u6bb5b = _obj_0["字段a"], _obj_0["字段b"]
-                end
+                local _obj_0 = _u8868
+                _u5b57_u6bb5a, _u5b57_u6bb5b = _obj_0["字段a"], _obj_0["字段b"]
         end
         do
                 local _u53d8_u91cfa = _u8868
-                do
-                        local _obj_0 = __u65e0_u6548_u53d8_u91cf
-                        _u5b57_u6bb5b, _u5b57_u6bb5c = _obj_0["字段b"], _obj_0["字段c"]
-                end
+                local _obj_0 = __u65e0_u6548_u53d8_u91cf
+                _u5b57_u6bb5b, _u5b57_u6bb5c = _obj_0["字段b"], _obj_0["字段c"]
         end
         do
                 _u53d8_u91cfb = __u65e0_u6548_u53d8_u91cf
@@ -89,17 +83,13 @@ do
 end
 do
         local _u53d8_u91cfc, _u53d8_u91cfe
-        do
-                local _obj_0 = _u5bf9_u8c61tb
-                _u53d8_u91cfc, _u53d8_u91cfe = _obj_0["字段a"]["字段b"], _obj_0["字段a"]["字段d"]
-        end
+        local _obj_0 = _u5bf9_u8c61tb
+        _u53d8_u91cfc, _u53d8_u91cfe = _obj_0["字段a"]["字段b"], _obj_0["字段a"]["字段d"]
 end
 do
         local _u53d8_u91cfc, _u53d8_u91cfe, _u5143_u7d20f
-        do
-                local _obj_0 = _u5bf9_u8c61tb
-                _u53d8_u91cfc, _u53d8_u91cfe, _u5143_u7d20f = _obj_0["字段a"][1]["字段b"], _obj_0["字段a"][2]["字段d"], _obj_0["字段a"][3]
-        end
+        local _obj_0 = _u5bf9_u8c61tb
+        _u53d8_u91cfc, _u53d8_u91cfe, _u5143_u7d20f = _obj_0["字段a"][1]["字段b"], _obj_0["字段a"][2]["字段d"], _obj_0["字段a"][3]
 end
 do
         self["世界"] = _u53d8_u91cfx[1]
@@ -165,10 +155,8 @@ do
 end
 do
         local _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c
-        do
-                local _obj_0 = _u53d8_u91cfz
-                _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c = _obj_0[1], _obj_0[2], _obj_0[3]
-        end
+        local _obj_0 = _u53d8_u91cfz
+        _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c = _obj_0[1], _obj_0[2], _obj_0[3]
 end
 local _
 _ = function(_u53c2_u6570z)
@@ -178,10 +166,8 @@ do
         local _u53d8_u91cfz = "〇〇"
         _ = function(_u53c2_u6570k)
                 local _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c
-                do
-                        local _obj_0 = _u53c2_u6570z
-                        _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c = _obj_0[1], _obj_0[2], _obj_0[3]
-                end
+                local _obj_0 = _u53c2_u6570z
+                _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c = _obj_0[1], _obj_0[2], _obj_0[3]
         end
 end
 do
@@ -189,21 +175,17 @@ do
 end
 do
         local _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c
-        do
-                local _obj_0 = _u4e1c_u897f
-                _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c = _obj_0["如果"][1], _obj_0["如果"][2], _obj_0["如果"][3]
-        end
+        local _obj_0 = _u4e1c_u897f
+        _u5143_u7d20a, _u5143_u7d20b, _u5143_u7d20c = _obj_0["如果"][1], _obj_0["如果"][2], _obj_0["如果"][3]
 end
 do
         local _u5b57_u6bb5a, _u5b57_u6bb5b
         if true then
-                do
-                        local _obj_0 = {
-                                ["字段a"] = "你好",
-                                ["字段b"] = "世界"
-                        }
-                        _u5b57_u6bb5a, _u5b57_u6bb5b = _obj_0["字段a"], _obj_0["字段b"]
-                end
+                local _obj_0 = {
+                        ["字段a"] = "你好",
+                        ["字段b"] = "世界"
+                }
+                _u5b57_u6bb5a, _u5b57_u6bb5b = _obj_0["字段a"], _obj_0["字段b"]
         end
         local _u5929, _u5c0f_u65f6, _u5206_u949f, _u79d2
         do
@@ -311,41 +293,33 @@ do
                         end
                 end
         end
-        do
-                local _tmp_0
-                do
-                        local _obj_0 = getmetatable(_u5bf9_u8c61tb)
-                        _tmp_0 = _obj_0["函数"]
+        local _tmp_0
+        local _obj_0 = getmetatable(_u5bf9_u8c61tb)
+        _tmp_0 = _obj_0["函数"]
+        if _tmp_0 == nil then
+                local _obj_1 = _u9879_u76ee
+                if _obj_1 ~= nil then
+                        _tmp_0 = _obj_1["默认值"]
                 end
-                if _tmp_0 == nil then
-                        local _obj_0 = _u9879_u76ee
-                        if _obj_0 ~= nil then
-                                _tmp_0 = _obj_0["默认值"]
-                        end
-                end
-                a_u5bf9_u8c61["b字段"](function()
-                        return 123
-                end)["字段c"] = _tmp_0
         end
+        a_u5bf9_u8c61["b字段"](function()
+                return 123
+        end)["字段c"] = _tmp_0
 end
 do
         local _u5143_u8868, _u51cf_u51fd_u6570
-        do
-                local _obj_0 = getmetatable(_u5bf9_u8c61tb["字段x"])
-                _u5143_u8868, _u51cf_u51fd_u6570 = _obj_0, _obj_0.__sub
-                if _u5143_u8868 == nil then
-                        _u5143_u8868 = { }
-                end
+        local _obj_0 = getmetatable(_u5bf9_u8c61tb["字段x"])
+        _u5143_u8868, _u51cf_u51fd_u6570 = _obj_0, _obj_0.__sub
+        if _u5143_u8868 == nil then
+                _u5143_u8868 = { }
         end
 end
 do
         local _u5143_u8868, _u51cf_u51fd_u6570
-        do
-                local _obj_0 = _u5bf9_u8c61tb
-                _u5143_u8868, _u51cf_u51fd_u6570 = getmetatable(_obj_0["x字段"]), getmetatable(_obj_0["x字段"]).__sub
-                if _u5143_u8868 == nil then
-                        _u5143_u8868 = { }
-                end
+        local _obj_0 = _u5bf9_u8c61tb
+        _u5143_u8868, _u51cf_u51fd_u6570 = getmetatable(_obj_0["x字段"]), getmetatable(_obj_0["x字段"]).__sub
+        if _u5143_u8868 == nil then
+                _u5143_u8868 = { }
         end
 end
 do
@@ -380,24 +354,20 @@ do
 end
 do
         local a_u5143_u7d20, b_u5143_u7d20
-        do
-                local _obj_0 = _u5bf9_u8c61tb
-                a_u5143_u7d20, b_u5143_u7d20 = _obj_0[2], _obj_0[4]
-        end
+        local _obj_0 = _u5bf9_u8c61tb
+        a_u5143_u7d20, b_u5143_u7d20 = _obj_0[2], _obj_0[4]
 end
 do
-        do
-                local _obj_0 = _u5bf9_u8c61x["字段x"]["字段x"]
-                local _tmp_0, _tmp_1 = _obj_0["字段x"], _obj_0["y字段"]
-                if _tmp_0 == nil then
-                        _tmp_0 = 1
-                end
-                if _tmp_1 == nil then
-                        _tmp_1 = 2
-                end
-                _u5bf9_u8c61a["字段b"] = _tmp_0
-                a_u5bf9_u8c61["c字段"] = _tmp_1
+        local _obj_0 = _u5bf9_u8c61x["字段x"]["字段x"]
+        local _tmp_0, _tmp_1 = _obj_0["字段x"], _obj_0["y字段"]
+        if _tmp_0 == nil then
+                _tmp_0 = 1
         end
+        if _tmp_1 == nil then
+                _tmp_1 = 2
+        end
+        _u5bf9_u8c61a["字段b"] = _tmp_0
+        a_u5bf9_u8c61["c字段"] = _tmp_1
 end
 do
         local _u5bbd, _u9ad8
@@ -406,15 +376,13 @@ do
                 _u5bbd, _u9ad8 = _obj_0["宽"], _obj_0["高"]
         end
         local x_u5750_u6807, y_u5750_u6807
-        do
-                local _obj_0 = _u70b9
-                x_u5750_u6807, y_u5750_u6807 = _obj_0["x坐标"], _obj_0["y坐标"]
-                if x_u5750_u6807 == nil then
-                        x_u5750_u6807 = 0.0
-                end
-                if y_u5750_u6807 == nil then
-                        y_u5750_u6807 = 0.0
-                end
+        local _obj_0 = _u70b9
+        x_u5750_u6807, y_u5750_u6807 = _obj_0["x坐标"], _obj_0["y坐标"]
+        if x_u5750_u6807 == nil then
+                x_u5750_u6807 = 0.0
+        end
+        if y_u5750_u6807 == nil then
+                y_u5750_u6807 = 0.0
         end
 end
 do
@@ -438,29 +406,25 @@ do
 end
 do
         local _u53d8_u91cfv1, _u53d8_u91cfv2, _u53d8_u91cfv3, _u53d8_u91cfv4
-        do
-                local _obj_0 = _u5bf9_u8c61tb
-                local _tmp_0, _tmp_1 = 1 + 1, self.x
-                _u53d8_u91cfv1, _u53d8_u91cfv2, _u53d8_u91cfv3, _u53d8_u91cfv4 = _obj_0[ [["abc"]]], _obj_0[_tmp_0][1], _obj_0[_tmp_0][2], _obj_0[_tmp_1]
-                if _u53d8_u91cfv1 == nil then
-                        _u53d8_u91cfv1 = 111
-                end
-                if _u53d8_u91cfv2 == nil then
-                        _u53d8_u91cfv2 = 222
-                end
-                if _u53d8_u91cfv3 == nil then
-                        _u53d8_u91cfv3 = 333
-                end
-                if _u53d8_u91cfv4 == nil then
-                        _u53d8_u91cfv4 = 444
-                end
+        local _obj_0 = _u5bf9_u8c61tb
+        local _tmp_0, _tmp_1 = 1 + 1, self.x
+        _u53d8_u91cfv1, _u53d8_u91cfv2, _u53d8_u91cfv3, _u53d8_u91cfv4 = _obj_0[ [["abc"]]], _obj_0[_tmp_0][1], _obj_0[_tmp_0][2], _obj_0[_tmp_1]
+        if _u53d8_u91cfv1 == nil then
+                _u53d8_u91cfv1 = 111
         end
-        local _u53d8_u91cfv5, _u53d8_u91cfv6, _u53d8_u91cfv7
-        do
-                local _obj_0 = _u5bf9_u8c61tb2
-                local _tmp_2, _tmp_3 = _u51fd_u6570(), _u51fd_u65702()
-                _u53d8_u91cfv5, _u53d8_u91cfv6, _u53d8_u91cfv7 = _obj_0['x-y-z'], _obj_0[_tmp_2][_tmp_3], _obj_0[_tmp_2][1]
+        if _u53d8_u91cfv2 == nil then
+                _u53d8_u91cfv2 = 222
+        end
+        if _u53d8_u91cfv3 == nil then
+                _u53d8_u91cfv3 = 333
+        end
+        if _u53d8_u91cfv4 == nil then
+                _u53d8_u91cfv4 = 444
         end
+        local _u53d8_u91cfv5, _u53d8_u91cfv6, _u53d8_u91cfv7
+        local _obj_1 = _u5bf9_u8c61tb2
+        local _tmp_2, _tmp_3 = _u51fd_u6570(), _u51fd_u65702()
+        _u53d8_u91cfv5, _u53d8_u91cfv6, _u53d8_u91cfv7 = _obj_1['x-y-z'], _obj_1[_tmp_2][_tmp_3], _obj_1[_tmp_2][1]
 end
 do
         local _u503c, _u5143_u503c
@@ -499,16 +463,12 @@ do
 end
 do
         local _u5bf9_u8c61tb = { }
-        do
-                local _tmp_0 = _u51fd_u6570c()
-                local _u53d8_u91cfv2 = _u5bf9_u8c61tb[_tmp_0]
-        end
+        local _tmp_0 = _u51fd_u6570c()
+        local _u53d8_u91cfv2 = _u5bf9_u8c61tb[_tmp_0]
         local _u53d8_u91cfv1
-        do
-                local _obj_0 = getmetatable(_u5bf9_u8c61tb)
-                local _tmp_1 = _u53d8_u91cfa + _u53d8_u91cfb
-                _u53d8_u91cfv1 = _obj_0[_tmp_1]
-        end
+        local _obj_0 = getmetatable(_u5bf9_u8c61tb)
+        local _tmp_1 = _u53d8_u91cfa + _u53d8_u91cfb
+        _u53d8_u91cfv1 = _obj_0[_tmp_1]
 end
 do
         local add, _u5b57_u6bb5
diff --git a/spec/outputs/unicode/import.lua b/spec/outputs/unicode/import.lua
index e4aec89..7c31ceb 100644
--- a/spec/outputs/unicode/import.lua
+++ b/spec/outputs/unicode/import.lua
@@ -87,10 +87,8 @@ do
 end
 do
         local _u51fd_u6570, _u5982_u679c_u53d8_u91cf
-        do
-                local _obj_1 = require("组织.包.模块")
-                _u51fd_u6570, _u5982_u679c_u53d8_u91cf = _obj_1["函数体"], _obj_1["如果"]
-        end
+        local _obj_1 = require("组织.包.模块")
+        _u51fd_u6570, _u5982_u679c_u53d8_u91cf = _obj_1["函数体"], _obj_1["如果"]
 end
 do
         local _u53d8_u91cfb = getmetatable(require("块")).__gc
@@ -103,8 +101,6 @@ do
         end
         local _u53d8_u91cfd = require("块")["字段c"]
         local _u5143_u7d20g, _u53d8_u91cfi
-        do
-                local _obj_1 = require("块")
-                _u5143_u7d20g, _u53d8_u91cfi = _obj_1[1], getmetatable(_obj_1[2]).__close
-        end
+        local _obj_1 = require("块")
+        _u5143_u7d20g, _u53d8_u91cfi = _obj_1[1], getmetatable(_obj_1[2]).__close
 end
diff --git a/spec/outputs/unicode/local.lua b/spec/outputs/unicode/local.lua
index 4b4b366..194fd06 100644
--- a/spec/outputs/unicode/local.lua
+++ b/spec/outputs/unicode/local.lua
@@ -55,10 +55,8 @@ do
                 _u53d8_u91cfk = 10
         end
         _u53d8_u91cfx = 100
-        do
-                local _obj_0 = _u53d8_u91cfy
-                _u53d8_u91cfa, _u53d8_u91cfb, _u53d8_u91cfc = _obj_0[1], _obj_0[2], _obj_0[3]
-        end
+        local _obj_0 = _u53d8_u91cfy
+        _u53d8_u91cfa, _u53d8_u91cfb, _u53d8_u91cfc = _obj_0[1], _obj_0[2], _obj_0[3]
 end
 do
         local _u53d8_u91cfa, _u53d8_u91cfb, _u53d8_u91cfc, _u53d8_u91cfd
diff --git a/spec/outputs/unicode/metatable.lua b/spec/outputs/unicode/metatable.lua
index c7c8730..ca48d0d 100644
--- a/spec/outputs/unicode/metatable.lua
+++ b/spec/outputs/unicode/metatable.lua
@@ -51,15 +51,11 @@ do
         local _obj_0, _obj_1
         _u53d8_u91cfx, _obj_0, _obj_1 = 123, _u53d8_u91cfa["变量b"]["变量c"], _u51fd_u6570()
         _u65b0, _u53d8_u91cf = _obj_0["新"], _obj_0["变量"]
-        do
-                local _obj_2 = getmetatable(_obj_0)
-                close, _u5173_u95edA = _obj_2.__close, _obj_2.__close
-        end
+        local _obj_2 = getmetatable(_obj_0)
+        close, _u5173_u95edA = _obj_2.__close, _obj_2.__close
         num = _obj_1.num
-        do
-                local _obj_2 = getmetatable(_obj_1)
-                add, sub = _obj_2.__add, _obj_2.__sub
-        end
+        local _obj_3 = getmetatable(_obj_1)
+        add, sub = _obj_3.__add, _obj_3.__sub
 end
 setmetatable(_u53d8_u91cfa["变量b"], { })
 _u53d8_u91cfx.abc = 123
@@ -108,17 +104,13 @@ local _u7d22_u5f15 = getmetatable(_u53d8_u91cfa).__index
 index = getmetatable(_u53d8_u91cfa).__index
 do
         local _u6784_u9020, _u66f4_u65b0
-        do
-                local _obj_0 = getmetatable(_u53d8_u91cfa)
-                _u6784_u9020, _u66f4_u65b0 = _obj_0["新"], _obj_0["更新"]
-        end
+        local _obj_0 = getmetatable(_u53d8_u91cfa)
+        _u6784_u9020, _u66f4_u65b0 = _obj_0["新"], _obj_0["更新"]
 end
 do
         local _u6784_u9020, _u66f4_u65b0
-        do
-                local _obj_0 = getmetatable(_u53d8_u91cfa)
-                _u6784_u9020, _u66f4_u65b0 = _obj_0["新"], _obj_0["更新"]
-        end
+        local _obj_0 = getmetatable(_u53d8_u91cfa)
+        _u6784_u9020, _u66f4_u65b0 = _obj_0["新"], _obj_0["更新"]
 end
 local _u8868 = { }
 do