mirror of
https://github.com/leafo/moonscript.git
synced 2024-10-05 05:34:19 +00:00
transformers are instanced for for root blocks
This commit is contained in:
leaf corcoran
parent
44167c327a
commit
5f08b2f532
@ -317,7 +317,7 @@ Block = (function()
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return self:value(node)
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end,
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value = function(self, node, ...)
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node = transform.Value(node)
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node = self.root.transform.value(node)
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local action
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if type(node) ~= "table" then
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action = "raw_value"
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@ -353,7 +353,7 @@ Block = (function()
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if not node then
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return
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end
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node = transform.Statement(node)
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node = self.root.transform.statement(node)
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local fn = line_compile[ntype(node)]
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if not fn then
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if has_value(node) then
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@ -403,6 +403,7 @@ Block = (function()
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self._names = { }
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self._state = { }
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if self.parent then
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self.root = self.parent.root
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self.indent = self.parent.indent + 1
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return setmetatable(self._state, {
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__index = self.parent._state
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@ -426,6 +427,9 @@ local RootBlock
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RootBlock = (function()
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local _parent_0 = Block
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local _base_0 = {
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__tostring = function(self)
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return "RootBlock<>"
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end,
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render = function(self)
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self:_insert_breaks()
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return concat(self._lines, "\n")
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@ -437,10 +441,13 @@ RootBlock = (function()
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end
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local _class_0 = setmetatable({
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__init = function(self, ...)
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if _parent_0 then
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self.root = self
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self.transform = {
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value = transform.Value:instance(self),
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statement = transform.Statement:instance(self)
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}
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return _parent_0.__init(self, ...)
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end
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end
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}, {
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__index = _base_0,
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__call = function(cls, ...)
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@ -64,6 +64,7 @@ class Block
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@_state = {}
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if @parent
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@root = @parent.root
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@indent = @parent.indent + 1
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setmetatable @_state, { __index: @parent._state }
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else
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@ -226,7 +227,7 @@ class Block
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-- line wise compile functions
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name: (node) => @value node
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value: (node, ...) =>
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node = transform.Value node
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node = @root.transform.value node
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action = if type(node) != "table"
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"raw_value"
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else
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@ -244,7 +245,7 @@ class Block
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stm: (node, ...) =>
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return if not node -- slip blank statements
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node = transform.Statement node
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node = @root.transform.statement node
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fn = line_compile[ntype(node)]
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if not fn
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-- coerce value into statement
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@ -264,6 +265,16 @@ class Block
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nil
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class RootBlock extends Block
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new: (...) =>
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@root = self
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@transform = {
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value: transform.Value\instance self
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statement: transform.Statement\instance self
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}
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super ...
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__tostring: => "RootBlock<>"
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render: =>
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@_insert_breaks!
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concat @_lines, "\n"
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@ -7,7 +7,7 @@ local ntype, build, smart_node, is_slice = types.ntype, types.build, types.smart
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local insert = table.insert
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local is_value
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is_value = function(stm)
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return moonscript.compile.Block:is_value(stm) or Value.can_transform(stm)
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return moonscript.compile.Block:is_value(stm) or Value:can_transform(stm)
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end
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NameProxy = (function()
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local _parent_0 = nil
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@ -154,43 +154,63 @@ is_singular = function(body)
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end
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local constructor_name = "new"
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local Transformer
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Transformer = function(transformers)
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local seen_nodes = { }
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local tf = {
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transform = function(n, ...)
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if seen_nodes[n] then
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return n
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Transformer = (function()
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local _parent_0 = nil
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local _base_0 = {
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transform = function(self, scope, node, ...)
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if self.seen_nodes[node] then
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return node
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end
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seen_nodes[n] = true
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self.seen_nodes[node] = true
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while true do
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local transformer = transformers[ntype(n)]
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local transformer = self.transformers[ntype(node)]
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local res
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if transformer then
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res = transformer(n, ...) or n
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res = transformer(scope, node, ...) or node
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else
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res = n
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res = node
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end
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if res == n then
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return n
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if res == node then
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return node
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end
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n = res
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node = res
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end
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end,
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can_transform = function(node)
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return transformers[ntype(node)] ~= nil
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__call = function(self, node, ...)
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return self:transform(self.scope, node, ...)
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end,
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instance = function(self, scope)
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return Transformer(self.transformers, scope)
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end,
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can_transform = function(self, node)
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return self.transformers[ntype(node)] ~= nil
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end
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}
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return setmetatable(tf, {
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__call = function(self, ...)
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return self.transform(...)
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_base_0.__index = _base_0
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if _parent_0 then
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setmetatable(_base_0, getmetatable(_parent_0).__index)
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end
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local _class_0 = setmetatable({
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__init = function(self, transformers, scope)
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self.transformers, self.scope = transformers, scope
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self.seen_nodes = { }
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end
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}, {
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__index = _base_0,
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__call = function(cls, ...)
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local _self_0 = setmetatable({}, _base_0)
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cls.__init(_self_0, ...)
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return _self_0
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end
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})
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end
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_base_0.__class = _class_0
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return _class_0
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end)()
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Statement = Transformer({
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assign = function(node)
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assign = function(self, node)
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local _, names, values = unpack(node)
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if #values == 1 and types.cascading[ntype(values[1])] then
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values[1] = Statement(values[1], function(stm)
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values[1] = self.transform.statement(values[1], function(stm)
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local t = ntype(stm)
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if is_value(stm) then
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return {
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@ -215,7 +235,7 @@ Statement = Transformer({
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return node
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end
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end,
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export = function(node)
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export = function(self, node)
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if #node > 2 then
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if node[2] == "class" then
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local cls = smart_node(node[3])
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@ -241,7 +261,7 @@ Statement = Transformer({
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return nil
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end
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end,
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update = function(node)
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update = function(self, node)
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local _, name, op, exp = unpack(node)
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local op_final = op:match("^(.+)=$")
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if not op_final then
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@ -254,7 +274,7 @@ Statement = Transformer({
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exp
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})
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end,
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import = function(node)
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import = function(self, node)
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local _, names, source = unpack(node)
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local stubs = (function()
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local _accum_0 = { }
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@ -340,7 +360,7 @@ Statement = Transformer({
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})
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end
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end,
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comprehension = function(node, action)
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comprehension = function(self, node, action)
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local _, exp, clauses = unpack(node)
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action = action or function(exp)
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return {
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@ -376,7 +396,7 @@ Statement = Transformer({
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end
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return current_stms[1]
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end,
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["if"] = function(node, ret)
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["if"] = function(self, node, ret)
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if ret then
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smart_node(node)
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node['then'] = apply_to_last(node['then'], ret)
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@ -388,7 +408,7 @@ Statement = Transformer({
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end
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return node
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end,
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with = function(node, ret)
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with = function(self, node, ret)
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local _, exp, block = unpack(node)
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local scope_name = NameProxy("with")
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return build["do"]({
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@ -404,7 +424,7 @@ Statement = Transformer({
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end)()
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})
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end,
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foreach = function(node)
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foreach = function(self, node)
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smart_node(node)
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if ntype(node.iter) == "unpack" then
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local list = node.iter[2]
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@ -470,7 +490,7 @@ Statement = Transformer({
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})
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end
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end,
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class = function(node)
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class = function(self, node)
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local _, name, parent_val, tbl = unpack(node)
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local constructor = nil
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local properties = (function()
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@ -766,16 +786,18 @@ Accumulator = (function()
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return _class_0
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end)()
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local default_accumulator
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default_accumulator = function(node)
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default_accumulator = function(self, node)
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return Accumulator():convert(node)
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end
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local implicitly_return
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implicitly_return = function(stm)
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implicitly_return = function(scope)
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local fn
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fn = function(stm)
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local t = ntype(stm)
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if types.manual_return[t] or not is_value(stm) then
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return stm
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elseif types.cascading[t] then
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return Statement(stm, implicitly_return)
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return scope.transform.statement(stm, fn)
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else
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return {
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"return",
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@ -783,41 +805,43 @@ implicitly_return = function(stm)
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}
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end
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end
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return fn
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end
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Value = Transformer({
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["for"] = default_accumulator,
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["while"] = default_accumulator,
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foreach = default_accumulator,
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comprehension = function(node)
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comprehension = function(self, node)
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local a = Accumulator()
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node = Statement(node, function(exp)
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node = self.transform.statement(node, function(exp)
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return a:mutate_body({
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exp
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}, false)
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end)
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return a:wrap(node)
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end,
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fndef = function(node)
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fndef = function(self, node)
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smart_node(node)
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node.body = apply_to_last(node.body, implicitly_return)
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node.body = apply_to_last(node.body, implicitly_return(self))
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return node
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end,
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["if"] = function(node)
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["if"] = function(self, node)
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return build.block_exp({
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node
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})
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end,
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with = function(node)
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with = function(self, node)
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return build.block_exp({
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node
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})
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end,
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chain = function(node)
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chain = function(self, node)
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local stub = node[#node]
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if type(stub) == "table" and stub[1] == "colon_stub" then
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table.remove(node, #node)
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local base_name = NameProxy("base")
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local fn_name = NameProxy("fn")
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return Value(build.block_exp({
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return self.transform.value(build.block_exp({
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build.assign({
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names = {
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base_name
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@ -862,7 +886,7 @@ Value = Transformer({
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}))
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end
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end,
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block_exp = function(node)
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block_exp = function(self, node)
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local _, body = unpack(node)
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local fn = nil
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local arg_list = { }
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@ -13,7 +13,7 @@ export Statement, Value, NameProxy, Run
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-- TODO refactor
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is_value = (stm) ->
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moonscript.compile.Block\is_value(stm) or Value.can_transform stm
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moonscript.compile.Block\is_value(stm) or Value\can_transform stm
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class NameProxy
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new: (@prefix) =>
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@ -82,35 +82,38 @@ is_singular = (body) ->
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constructor_name = "new"
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Transformer = (transformers) ->
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-- this is bad, instance it for compiler
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seen_nodes = {}
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tf = {
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transform: (n, ...) ->
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return n if seen_nodes[n]
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seen_nodes[n] = true
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while true
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transformer = transformers[ntype n]
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res = if transformer
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transformer(n, ...) or n
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else
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n
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return n if res == n
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n = res
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can_transform: (node) ->
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transformers[ntype node] != nil
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}
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class Transformer
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new: (@transformers, @scope) =>
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@seen_nodes = {}
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setmetatable tf, {
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__call: (...) => self.transform ...
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}
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transform: (scope, node, ...) =>
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-- print scope, node, ...
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return node if @seen_nodes[node]
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@seen_nodes[node] = true
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while true
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transformer = @transformers[ntype node]
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res = if transformer
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transformer(scope, node, ...) or node
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else
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node
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return node if res == node
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node = res
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__call: (node, ...) =>
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@transform @scope, node, ...
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instance: (scope) =>
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Transformer @transformers, scope
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can_transform: (node) =>
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@transformers[ntype node] != nil
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Statement = Transformer {
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assign: (node) ->
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assign: (node) =>
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_, names, values = unpack node
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-- bubble cascading assigns
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if #values == 1 and types.cascading[ntype values[1]]
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values[1] = Statement values[1], (stm) ->
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values[1] = @transform.statement values[1], (stm) ->
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t = ntype stm
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if is_value stm
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{"assign", names, {stm}}
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@ -124,7 +127,7 @@ Statement = Transformer {
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else
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node
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export: (node) ->
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export: (node) =>
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-- assign values if they are included
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if #node > 2
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if node[2] == "class"
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@ -144,13 +147,13 @@ Statement = Transformer {
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else
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nil
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update: (node) ->
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update: (node) =>
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_, name, op, exp = unpack node
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op_final = op\match "^(.+)=$"
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error "Unknown op: "..op if not op_final
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build.assign_one name, {"exp", name, op_final, exp}
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import: (node) ->
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import: (node) =>
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_, names, source = unpack node
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stubs = for name in *names
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@ -180,7 +183,7 @@ Statement = Transformer {
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}
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}
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comprehension: (node, action) ->
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comprehension: (node, action) =>
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_, exp, clauses = unpack node
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action = action or (exp) -> {exp}
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@ -201,7 +204,7 @@ Statement = Transformer {
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current_stms[1]
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-- handle cascading return decorator
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if: (node, ret) ->
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if: (node, ret) =>
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if ret
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smart_node node
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-- mutate all the bodies
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@ -212,7 +215,7 @@ Statement = Transformer {
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case[body_idx] = apply_to_last case[body_idx], ret
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node
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with: (node, ret) ->
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with: (node, ret) =>
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_, exp, block = unpack node
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scope_name = NameProxy "with"
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build["do"] {
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@ -223,7 +226,7 @@ Statement = Transformer {
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ret scope_name
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}
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foreach: (node) ->
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foreach: (node) =>
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smart_node node
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if ntype(node.iter) == "unpack"
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list = node.iter[2]
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@ -263,7 +266,7 @@ Statement = Transformer {
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}
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}
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class: (node) ->
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class: (node) =>
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_, name, parent_val, tbl = unpack node
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constructor = nil
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@ -422,39 +425,42 @@ class Accumulator
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body
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default_accumulator = (node) ->
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default_accumulator = (node) =>
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Accumulator!\convert node
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implicitly_return = (stm) ->
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implicitly_return = (scope) ->
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fn = (stm) ->
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t = ntype stm
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if types.manual_return[t] or not is_value stm
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stm
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elseif types.cascading[t]
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Statement stm, implicitly_return
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scope.transform.statement stm, fn
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else
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{"return", stm}
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fn
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Value = Transformer {
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for: default_accumulator
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while: default_accumulator
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foreach: default_accumulator
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comprehension: (node) ->
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comprehension: (node) =>
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a = Accumulator!
|
||||
node = Statement node, (exp) ->
|
||||
node = @transform.statement node, (exp) ->
|
||||
a\mutate_body {exp}, false
|
||||
a\wrap node
|
||||
|
||||
fndef: (node) ->
|
||||
fndef: (node) =>
|
||||
smart_node node
|
||||
node.body = apply_to_last node.body, implicitly_return
|
||||
node.body = apply_to_last node.body, implicitly_return self
|
||||
node
|
||||
|
||||
if: (node) -> build.block_exp { node }
|
||||
with: (node) -> build.block_exp { node }
|
||||
if: (node) => build.block_exp { node }
|
||||
with: (node) => build.block_exp { node }
|
||||
|
||||
-- pull out colon chain
|
||||
chain: (node) ->
|
||||
chain: (node) =>
|
||||
stub = node[#node]
|
||||
if type(stub) == "table" and stub[1] == "colon_stub"
|
||||
table.remove node, #node
|
||||
@ -462,7 +468,7 @@ Value = Transformer {
|
||||
base_name = NameProxy "base"
|
||||
fn_name = NameProxy "fn"
|
||||
|
||||
Value build.block_exp {
|
||||
@transform.value build.block_exp {
|
||||
build.assign {
|
||||
names: {base_name}
|
||||
values: {node}
|
||||
@ -485,7 +491,7 @@ Value = Transformer {
|
||||
}
|
||||
}
|
||||
|
||||
block_exp: (node) ->
|
||||
block_exp: (node) =>
|
||||
_, body = unpack node
|
||||
|
||||
fn = nil
|
||||
|
||||
Loading…
Reference in New Issue
Block a user