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compile.lua
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747 lines (747 loc) · 19 KB
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local util = require("moonscript.util")
local dump = require("moonscript.dump")
local transform = require("moonscript.transform")
local NameProxy, LocalName
do
local _obj_0 = require("moonscript.transform.names")
NameProxy, LocalName = _obj_0.NameProxy, _obj_0.LocalName
end
local Set
Set = require("moonscript.data").Set
local ntype, value_can_be_statement
do
local _obj_0 = require("moonscript.types")
ntype, value_can_be_statement = _obj_0.ntype, _obj_0.value_can_be_statement
end
local statement_compilers = require("moonscript.compile.statement")
local value_compilers = require("moonscript.compile.value")
local concat, insert
do
local _obj_0 = table
concat, insert = _obj_0.concat, _obj_0.insert
end
local pos_to_line, get_closest_line, trim, unpack, mtype
pos_to_line, get_closest_line, trim, unpack, mtype = util.pos_to_line, util.get_closest_line, util.trim, util.unpack, util.mtype
local indent_char = " "
local Line, DelayedLine, Lines, Block, RootBlock
do
local _class_0
local _base_0 = {
mark_pos = function(self, pos, line)
if line == nil then
line = #self
end
if not (self.posmap[line]) then
self.posmap[line] = pos
end
end,
add = function(self, item)
local _exp_0 = mtype(item)
if Line == _exp_0 then
item:render(self)
elseif Block == _exp_0 then
item:render(self)
else
self[#self + 1] = item
end
return self
end,
flatten_posmap = function(self, line_no, out)
if line_no == nil then
line_no = 0
end
if out == nil then
out = { }
end
local posmap = self.posmap
for i, l in ipairs(self) do
local _exp_0 = mtype(l)
if "string" == _exp_0 or DelayedLine == _exp_0 then
line_no = line_no + 1
out[line_no] = posmap[i]
for _ in l:gmatch("\n") do
line_no = line_no + 1
end
out[line_no] = posmap[i]
elseif Lines == _exp_0 then
local _
_, line_no = l:flatten_posmap(line_no, out)
else
error("Unknown item in Lines: " .. tostring(l))
end
end
return out, line_no
end,
flatten = function(self, indent, buffer)
if indent == nil then
indent = nil
end
if buffer == nil then
buffer = { }
end
for i = 1, #self do
local l = self[i]
local t = mtype(l)
if t == DelayedLine then
l = l:render()
t = "string"
end
local _exp_0 = t
if "string" == _exp_0 then
if indent then
insert(buffer, indent)
end
insert(buffer, l)
if "string" == type(self[i + 1]) then
if l:sub(-1) ~= ',' and l:sub(-3) ~= 'end' and self[i + 1]:sub(1, 1) == "(" then
insert(buffer, ";")
end
end
insert(buffer, "\n")
elseif Lines == _exp_0 then
l:flatten(indent and indent .. indent_char or indent_char, buffer)
else
error("Unknown item in Lines: " .. tostring(l))
end
end
return buffer
end,
__tostring = function(self)
local strip
strip = function(t)
if "table" == type(t) then
local _accum_0 = { }
local _len_0 = 1
for _index_0 = 1, #t do
local v = t[_index_0]
_accum_0[_len_0] = strip(v)
_len_0 = _len_0 + 1
end
return _accum_0
else
return t
end
end
return "Lines<" .. tostring(util.dump(strip(self)):sub(1, -2)) .. ">"
end
}
_base_0.__index = _base_0
_class_0 = setmetatable({
__init = function(self)
self.posmap = { }
end,
__base = _base_0,
__name = "Lines"
}, {
__index = _base_0,
__call = function(cls, ...)
local _self_0 = setmetatable({}, _base_0)
cls.__init(_self_0, ...)
return _self_0
end
})
_base_0.__class = _class_0
Lines = _class_0
end
do
local _class_0
local _base_0 = {
pos = nil,
append_list = function(self, items, delim)
for i = 1, #items do
self:append(items[i])
if i < #items then
insert(self, delim)
end
end
return nil
end,
append = function(self, first, ...)
if Line == mtype(first) then
if not (self.pos) then
self.pos = first.pos
end
for _index_0 = 1, #first do
local value = first[_index_0]
self:append(value)
end
else
insert(self, first)
end
if ... then
return self:append(...)
end
end,
render = function(self, buffer)
local current = { }
local add_current
add_current = function()
buffer:add(concat(current))
return buffer:mark_pos(self.pos)
end
for _index_0 = 1, #self do
local chunk = self[_index_0]
local _exp_0 = mtype(chunk)
if Block == _exp_0 then
local _list_0 = chunk:render(Lines())
for _index_1 = 1, #_list_0 do
local block_chunk = _list_0[_index_1]
if "string" == type(block_chunk) then
insert(current, block_chunk)
else
add_current()
buffer:add(block_chunk)
current = { }
end
end
else
insert(current, chunk)
end
end
if current[1] then
add_current()
end
return buffer
end,
__tostring = function(self)
return "Line<" .. tostring(util.dump(self):sub(1, -2)) .. ">"
end
}
_base_0.__index = _base_0
_class_0 = setmetatable({
__init = function() end,
__base = _base_0,
__name = "Line"
}, {
__index = _base_0,
__call = function(cls, ...)
local _self_0 = setmetatable({}, _base_0)
cls.__init(_self_0, ...)
return _self_0
end
})
_base_0.__class = _class_0
Line = _class_0
end
do
local _class_0
local _base_0 = {
prepare = function() end,
render = function(self)
self:prepare()
return concat(self)
end
}
_base_0.__index = _base_0
_class_0 = setmetatable({
__init = function(self, fn)
self.prepare = fn
end,
__base = _base_0,
__name = "DelayedLine"
}, {
__index = _base_0,
__call = function(cls, ...)
local _self_0 = setmetatable({}, _base_0)
cls.__init(_self_0, ...)
return _self_0
end
})
_base_0.__class = _class_0
DelayedLine = _class_0
end
do
local _class_0
local _base_0 = {
header = "do",
footer = "end",
export_all = false,
export_proper = false,
value_compilers = value_compilers,
statement_compilers = statement_compilers,
__tostring = function(self)
local h
if "string" == type(self.header) then
h = self.header
else
h = unpack(self.header:render({ }))
end
return "Block<" .. tostring(h) .. "> <- " .. tostring(self.parent)
end,
set = function(self, name, value)
self._state[name] = value
end,
get = function(self, name)
return self._state[name]
end,
get_current = function(self, name)
return rawget(self._state, name)
end,
listen = function(self, name, fn)
self._listeners[name] = fn
end,
unlisten = function(self, name)
self._listeners[name] = nil
end,
send = function(self, name, ...)
do
local fn = self._listeners[name]
if fn then
return fn(self, ...)
end
end
end,
extract_assign_name = function(self, node)
local is_local = false
local real_name
local _exp_0 = mtype(node)
if LocalName == _exp_0 then
is_local = true
real_name = node:get_name(self)
elseif NameProxy == _exp_0 then
real_name = node:get_name(self)
elseif "table" == _exp_0 then
real_name = node[1] == "ref" and node[2]
elseif "string" == _exp_0 then
real_name = node
end
return real_name, is_local
end,
declare = function(self, names)
local undeclared
do
local _accum_0 = { }
local _len_0 = 1
for _index_0 = 1, #names do
local _continue_0 = false
repeat
local name = names[_index_0]
local real_name, is_local = self:extract_assign_name(name)
if not (is_local or real_name and not self:has_name(real_name, true)) then
_continue_0 = true
break
end
self:put_name(real_name)
if self:name_exported(real_name) then
_continue_0 = true
break
end
local _value_0 = real_name
_accum_0[_len_0] = _value_0
_len_0 = _len_0 + 1
_continue_0 = true
until true
if not _continue_0 then
break
end
end
undeclared = _accum_0
end
return undeclared
end,
whitelist_names = function(self, names)
self._name_whitelist = Set(names)
end,
name_exported = function(self, name)
if self.export_all then
return true
end
if self.export_proper and name:match("^%u") then
return true
end
end,
put_name = function(self, name, ...)
local value = ...
if select("#", ...) == 0 then
value = true
end
if NameProxy == mtype(name) then
name = name:get_name(self)
end
self._names[name] = value
end,
has_name = function(self, name, skip_exports)
if not skip_exports and self:name_exported(name) then
return true
end
local yes = self._names[name]
if yes == nil and self.parent then
if not self._name_whitelist or self._name_whitelist[name] then
return self.parent:has_name(name, true)
end
else
return yes
end
end,
is_local = function(self, node)
local t = mtype(node)
if t == "string" then
return self:has_name(node, false)
end
if t == NameProxy or t == LocalName then
return true
end
if t == "table" then
if node[1] == "ref" or (node[1] == "chain" and #node == 2) then
return self:is_local(node[2])
end
end
return false
end,
free_name = function(self, prefix, dont_put)
prefix = prefix or "moon"
local searching = true
local name, i = nil, 0
while searching do
name = concat({
"",
prefix,
i
}, "_")
i = i + 1
searching = self:has_name(name, true)
end
if not dont_put then
self:put_name(name)
end
return name
end,
init_free_var = function(self, prefix, value)
local name = self:free_name(prefix, true)
self:stm({
"assign",
{
name
},
{
value
}
})
return name
end,
add = function(self, item, pos)
do
local _with_0 = self._lines
_with_0:add(item)
if pos then
_with_0:mark_pos(pos)
end
end
return item
end,
render = function(self, buffer)
buffer:add(self.header)
buffer:mark_pos(self.pos)
if self.next then
buffer:add(self._lines)
self.next:render(buffer)
else
if #self._lines == 0 and "string" == type(buffer[#buffer]) then
local _update_0 = #buffer
buffer[_update_0] = buffer[_update_0] .. (" " .. (unpack(Lines():add(self.footer))))
else
buffer:add(self._lines)
buffer:add(self.footer)
buffer:mark_pos(self.pos)
end
end
return buffer
end,
block = function(self, header, footer)
return Block(self, header, footer)
end,
line = function(self, ...)
do
local _with_0 = Line()
_with_0:append(...)
return _with_0
end
end,
is_stm = function(self, node)
return self.statement_compilers[ntype(node)] ~= nil
end,
is_value = function(self, node)
local t = ntype(node)
return self.value_compilers[t] ~= nil or t == "value"
end,
name = function(self, node, ...)
if type(node) == "string" then
return node
else
return self:value(node, ...)
end
end,
value = function(self, node, ...)
node = self.transform.value(node)
local action
if type(node) ~= "table" then
action = "raw_value"
else
action = node[1]
end
local fn = self.value_compilers[action]
if not (fn) then
error({
"compile-error",
"Failed to find value compiler for: " .. dump.value(node),
node[-1]
})
end
local out = fn(self, node, ...)
if type(node) == "table" and node[-1] then
if type(out) == "string" then
do
local _with_0 = Line()
_with_0:append(out)
out = _with_0
end
end
out.pos = node[-1]
end
return out
end,
values = function(self, values, delim)
delim = delim or ', '
do
local _with_0 = Line()
_with_0:append_list((function()
local _accum_0 = { }
local _len_0 = 1
for _index_0 = 1, #values do
local v = values[_index_0]
_accum_0[_len_0] = self:value(v)
_len_0 = _len_0 + 1
end
return _accum_0
end)(), delim)
return _with_0
end
end,
stm = function(self, node, ...)
if not node then
return
end
node = self.transform.statement(node)
local result
do
local fn = self.statement_compilers[ntype(node)]
if fn then
result = fn(self, node, ...)
else
if value_can_be_statement(node) then
result = self:value(node)
else
result = self:stm({
"assign",
{
"_"
},
{
node
}
})
end
end
end
if result then
if type(node) == "table" and type(result) == "table" and node[-1] then
result.pos = node[-1]
end
self:add(result)
end
return nil
end,
stms = function(self, stms, ret)
if ret then
error("deprecated stms call, use transformer")
end
local current_stms, current_stm_i
current_stms, current_stm_i = self.current_stms, self.current_stm_i
self.current_stms = stms
for i = 1, #stms do
self.current_stm_i = i
self:stm(stms[i])
end
self.current_stms = current_stms
self.current_stm_i = current_stm_i
return nil
end,
splice = function(self, fn)
local lines = {
"lines",
self._lines
}
self._lines = Lines()
return self:stms(fn(lines))
end
}
_base_0.__index = _base_0
_class_0 = setmetatable({
__init = function(self, parent, header, footer)
self.parent, self.header, self.footer = parent, header, footer
self._lines = Lines()
self._names = { }
self._state = { }
self._listeners = { }
do
self.transform = {
value = transform.Value:bind(self),
statement = transform.Statement:bind(self)
}
end
if self.parent then
self.root = self.parent.root
self.indent = self.parent.indent + 1
setmetatable(self._state, {
__index = self.parent._state
})
return setmetatable(self._listeners, {
__index = self.parent._listeners
})
else
self.indent = 0
end
end,
__base = _base_0,
__name = "Block"
}, {
__index = _base_0,
__call = function(cls, ...)
local _self_0 = setmetatable({}, _base_0)
cls.__init(_self_0, ...)
return _self_0
end
})
_base_0.__class = _class_0
Block = _class_0
end
do
local _class_0
local _parent_0 = Block
local _base_0 = {
__tostring = function(self)
return "RootBlock<>"
end,
root_stms = function(self, stms)
if not (self.options.implicitly_return_root == false) then
stms = transform.Statement.transformers.root_stms(self, stms)
end
return self:stms(stms)
end,
render = function(self)
local buffer = self._lines:flatten()
if buffer[#buffer] == "\n" then
buffer[#buffer] = nil
end
return table.concat(buffer)
end
}
_base_0.__index = _base_0
setmetatable(_base_0, _parent_0.__base)
_class_0 = setmetatable({
__init = function(self, options)
self.options = options
self.root = self
return _class_0.__parent.__init(self)
end,
__base = _base_0,
__name = "RootBlock",
__parent = _parent_0
}, {
__index = function(cls, name)
local val = rawget(_base_0, name)
if val == nil then
local parent = rawget(cls, "__parent")
if parent then
return parent[name]
end
else
return val
end
end,
__call = function(cls, ...)
local _self_0 = setmetatable({}, _base_0)
cls.__init(_self_0, ...)
return _self_0
end
})
_base_0.__class = _class_0
if _parent_0.__inherited then
_parent_0.__inherited(_parent_0, _class_0)
end
RootBlock = _class_0
end
local format_error
format_error = function(msg, pos, file_str)
local line_message
if pos then
local line = pos_to_line(file_str, pos)
local line_str
line_str, line = get_closest_line(file_str, line)
line_str = line_str or ""
line_message = (" [%d] >> %s"):format(line, trim(line_str))
end
return concat({
"Compile error: " .. msg,
line_message
}, "\n")
end
local value
value = function(value)
local out = nil
do
local _with_0 = RootBlock()
_with_0:add(_with_0:value(value))
out = _with_0:render()
end
return out
end
local tree
tree = function(tree, options)
if options == nil then
options = { }
end
assert(tree, "missing tree")
local scope = (options.scope or RootBlock)(options)
local runner = coroutine.create(function()
return scope:root_stms(tree)
end)
local success, err = coroutine.resume(runner)
if not (success) then
local error_msg, error_pos
if type(err) == "table" then
local _exp_0 = err[1]
if "user-error" == _exp_0 or "compile-error" == _exp_0 then
error_msg, error_pos = unpack(err, 2)
else
error_msg, error_pos = error("Unknown error thrown", util.dump(error_msg))
end
else
error_msg, error_pos = concat({
err,
debug.traceback(runner)
}, "\n")
end
return nil, error_msg, error_pos or scope.last_pos
end
local lua_code = scope:render()
local posmap = scope._lines:flatten_posmap()
return lua_code, posmap
end
do
local data = require("moonscript.data")
for name, cls in pairs({
Line = Line,
Lines = Lines,
DelayedLine = DelayedLine
}) do
data[name] = cls
end
end
return {
tree = tree,
value = value,
format_error = format_error,
Block = Block,
RootBlock = RootBlock
}