Misc changes, including text indented interpolations are now indented
relative to the text, not the opening '("', code objects can now remove
all free vars, the REPL uses global vars. Error API is changing a bit.
This commit is contained in:
parent
0760d4fb64
commit
b6d3cbd61c
21
code_obj.lua
21
code_obj.lua
@ -320,6 +320,10 @@ do
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return self:dirty()
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end,
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remove_free_vars = function(self, vars)
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if vars == nil then
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vars = nil
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end
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vars = vars or self:get_free_vars()
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if not (#vars > 0) then
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return
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end
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@ -351,13 +355,8 @@ do
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end
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return self:dirty()
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end,
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declare_locals = function(self, to_declare)
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if to_declare == nil then
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to_declare = nil
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end
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if to_declare == nil then
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local seen
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to_declare, seen = { }, { }
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get_free_vars = function(self)
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local vars, seen = { }, { }
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local gather_from
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gather_from = function(self)
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local _list_0 = self.free_vars
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@ -365,7 +364,7 @@ do
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local var = _list_0[_index_0]
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if not (seen[var]) then
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seen[var] = true
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to_declare[#to_declare + 1] = var
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vars[#vars + 1] = var
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end
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end
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local _list_1 = self.bits
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@ -377,7 +376,13 @@ do
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end
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end
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gather_from(self)
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return vars
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end,
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declare_locals = function(self, to_declare)
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if to_declare == nil then
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to_declare = nil
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end
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to_declare = to_declare or self:get_free_vars()
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if #to_declare > 0 then
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self:remove_free_vars(to_declare)
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self:prepend("local " .. tostring(concat(to_declare, ", ")) .. ";\n")
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@ -179,7 +179,8 @@ class LuaCode extends Code
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seen[var] = true
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@dirty!
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remove_free_vars: (vars)=>
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remove_free_vars: (vars=nil)=>
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vars or= @get_free_vars!
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return unless #vars > 0
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removals = {}
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for var in *vars
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@ -198,18 +199,21 @@ class LuaCode extends Code
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stack[#stack+1] = b
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@dirty!
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declare_locals: (to_declare=nil)=>
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if to_declare == nil
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to_declare, seen = {}, {}
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get_free_vars: =>
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vars, seen = {}, {}
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gather_from = =>
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for var in *@free_vars
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unless seen[var]
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seen[var] = true
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to_declare[#to_declare+1] = var
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vars[#vars+1] = var
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for bit in *@bits
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unless type(bit) == 'string'
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gather_from bit
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gather_from self
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return vars
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declare_locals: (to_declare=nil)=>
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to_declare or= @get_free_vars!
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if #to_declare > 0
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@remove_free_vars to_declare
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@prepend "local #{concat to_declare, ", "};\n"
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@ -251,18 +251,6 @@ List = function(t)
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return error("Unsupported List type: " .. type(t))
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end
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end
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local walk_items
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walk_items = function(self, i)
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i = i + 1
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local k, v = next(self.table, self.key)
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if k ~= nil then
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self.key = k
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return i, Dict({
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key = k,
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value = v
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})
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end
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end
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local _dict_mt = {
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__type = "Dict",
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__eq = function(self, other)
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@ -321,12 +309,6 @@ local _dict_mt = {
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return _accum_0
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end)(), ", ") .. "}"
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end,
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__ipairs = function(self)
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return walk_items, {
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table = self,
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key = nil
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}, 0
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end,
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__band = function(self, other)
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return Dict((function()
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local _tbl_0 = { }
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@ -339,30 +321,28 @@ local _dict_mt = {
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end)())
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end,
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__bor = function(self, other)
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local ret
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do
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local ret = Dict((function()
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local _tbl_0 = { }
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for k, v in pairs(self) do
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_tbl_0[k] = v
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end
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ret = _tbl_0
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end
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return _tbl_0
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end)())
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for k, v in pairs(other) do
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if ret[k] == nil then
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ret[k] = v
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end
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end
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return Dict(ret)
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return ret
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end,
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__bxor = function(self, other)
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local ret
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do
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local ret = Dict((function()
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local _tbl_0 = { }
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for k, v in pairs(self) do
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_tbl_0[k] = v
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end
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ret = _tbl_0
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end
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return _tbl_0
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end)())
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for k, v in pairs(other) do
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if ret[k] == nil then
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ret[k] = v
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@ -370,17 +350,16 @@ local _dict_mt = {
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ret[k] = nil
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end
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end
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return Dict(ret)
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return ret
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end,
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__add = function(self, other)
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local ret
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do
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local ret = Dict((function()
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local _tbl_0 = { }
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for k, v in pairs(self) do
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_tbl_0[k] = v
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end
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ret = _tbl_0
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end
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return _tbl_0
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end)())
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for k, v in pairs(other) do
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if ret[k] == nil then
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ret[k] = v
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@ -388,17 +367,16 @@ local _dict_mt = {
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ret[k] = ret[k] + v
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end
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end
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return Dict(ret)
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return ret
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end,
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__sub = function(self, other)
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local ret
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do
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local ret = Dict((function()
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local _tbl_0 = { }
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for k, v in pairs(self) do
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_tbl_0[k] = v
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end
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ret = _tbl_0
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end
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return _tbl_0
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end)())
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for k, v in pairs(other) do
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if ret[k] == nil then
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ret[k] = -v
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@ -406,7 +384,7 @@ local _dict_mt = {
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ret[k] = ret[k] - v
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end
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end
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return Dict(ret)
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return ret
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end
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}
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Dict = function(t)
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@ -430,11 +408,6 @@ Dict = function(t)
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return error("Unsupported Dict type: " .. type(t))
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end
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end
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for i, entry in ipairs(Dict({
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x = 99
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})) do
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assert(i == 1 and entry.key == "x" and entry.value == 99, "ipairs compatibility issue")
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end
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do
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local reverse, upper, lower, find, byte, match, gmatch, gsub, sub, format, rep
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do
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@ -502,9 +475,9 @@ do
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return (match(self, patt))
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end,
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matching_groups = function(self, patt)
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return {
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return List({
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match(self, patt)
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}
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})
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end,
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[as_lua_id("* 1")] = function(self, n)
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return rep(self, n)
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@ -106,13 +106,6 @@ List = (t)->
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return l
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else error("Unsupported List type: "..type(t))
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walk_items = (i)=>
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i = i + 1
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k, v = next(@table, @key)
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if k != nil
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@key = k
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return i, Dict{key:k, value:v}
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_dict_mt =
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__type: "Dict"
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__eq: (other)=>
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@ -133,32 +126,31 @@ _dict_mt =
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"{"..concat(["#{as_nomsu(k)}: #{as_nomsu(v)}" for k,v in pairs @], ", ").."}"
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as_lua: =>
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"Dict{"..concat(["[ #{as_lua(k)}]= #{as_lua(v)}" for k,v in pairs @], ", ").."}"
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__ipairs: => walk_items, {table:@, key:nil}, 0
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__band: (other)=>
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Dict{k,v for k,v in pairs(@) when other[k] != nil}
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__bor: (other)=>
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ret = {k,v for k,v in pairs(@)}
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ret = Dict{k,v for k,v in pairs(@)}
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for k,v in pairs(other)
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if ret[k] == nil then ret[k] = v
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return Dict(ret)
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return ret
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__bxor: (other)=>
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ret = {k,v for k,v in pairs(@)}
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ret = Dict{k,v for k,v in pairs(@)}
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for k,v in pairs(other)
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if ret[k] == nil then ret[k] = v
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else ret[k] = nil
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return Dict(ret)
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return ret
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__add: (other)=>
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ret = {k,v for k,v in pairs(@)}
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ret = Dict{k,v for k,v in pairs(@)}
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for k,v in pairs(other)
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if ret[k] == nil then ret[k] = v
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else ret[k] += v
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return Dict(ret)
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return ret
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__sub: (other)=>
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ret = {k,v for k,v in pairs(@)}
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ret = Dict{k,v for k,v in pairs(@)}
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for k,v in pairs(other)
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if ret[k] == nil then ret[k] = -v
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else ret[k] -= v
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return Dict(ret)
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return ret
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Dict = (t)->
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if type(t) == 'table'
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return setmetatable(t, _dict_mt)
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@ -171,8 +163,6 @@ Dict = (t)->
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return d
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else error("Unsupported Dict type: "..type(t))
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for i,entry in ipairs(Dict({x:99}))
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assert(i == 1 and entry.key == "x" and entry.value == 99, "ipairs compatibility issue")
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do
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{:reverse, :upper, :lower, :find, :byte, :match, :gmatch, :gsub, :sub, :format, :rep} = string
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@ -204,7 +194,7 @@ do
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line_position_at: (i)=> select(3, line_at(@, i))
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matches: (patt)=> match(@, patt) and true or false
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matching: (patt)=> (match(@, patt))
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matching_groups: (patt)=> {match(@, patt)}
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matching_groups: (patt)=> List{match(@, patt)}
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[as_lua_id "* 1"]: (n)=> rep(@, n)
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all_matches_of: (patt)=>
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result = {}
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@ -37,7 +37,6 @@ test:
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test:
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$dict = {.x = 1, .y = 2, .z = 3}
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assume (size of $dict) == 3
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assume [: for $ in {.x = 1}: add $] == [{.key = "x", .value = 1}]
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assume [: for $k = $v in {.x = 1}: add {.key = $k, .value = $v}] ==
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[{.key = "x", .value = 1}]
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assume ({.x = 1, .y = 1} + {.y = 10, .z = 10}) == {.x = 1, .y = 11, .z = 10}
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@ -5,7 +5,6 @@
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use "core/metaprogramming.nom"
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use "core/operators.nom"
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use "core/errors.nom"
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -448,32 +447,6 @@ test:
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end -- do
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")
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test:
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$d = {}
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try:
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do:
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$d.x = "bad"
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barf
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..then always:
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$d.x = "good"
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assume ($d.x == "good")
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(do $action then always $final_action) compiles to:
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define mangler
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return
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Lua ("
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do
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local \(mangle "fell_through") = false
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local \(mangle "ok"), \(mangle "ret") = pcall(function()
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\($action as lua)
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\(mangle "fell_through") = true
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end)
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\($final_action as lua)
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if not \(mangle "ok") then error(ret, 0) end
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if not \(mangle "fell_through") then return ret end
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end
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")
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test:
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assume ((result of: return 99) == 99)
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115
core/errors.nom
115
core/errors.nom
@ -3,11 +3,12 @@
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This file contains basic error reporting code
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use "core/metaprogramming.nom"
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use "core/operators.nom"
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(barf $msg) compiles to
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"error(\(=lua "\$msg and \($msg as lua expr) or 'nil'"), 0);"
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(fail $msg) compiles to
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"error(\(($msg as lua expr) if $msg else "nil"), 0);"
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(assume $condition) compiles to:
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lua> ("
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@ -37,62 +38,86 @@ use "core/metaprogramming.nom"
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end
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")
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(assume $condition or barf $message) compiles to ("
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if not \($condition as lua expr) then
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error(\($message as lua expr), 0)
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end
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")
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test:
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try (barf) and if it succeeds:
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barf "try failed."
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try: fail
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$worked = (no)
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try (barf) and if it barfs:
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try: fail
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..if it fails:
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$worked = (yes)
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assume $worked or barf "try/catch failed"
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$x = 1
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try:
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$x = 2
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do (barf) then always: $x = 3
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..and if it barfs:
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do nothing
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assume ($x == 3) or barf "do/then always failed"
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..if it succeeds:
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fail "'try' incorrectly ran success case."
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unless $worked:
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fail "'try' failed to recover from failure"
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# Try/except
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[
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try $action and if it succeeds $success or if it barfs $msg $fallback
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try $action and if it barfs $msg $fallback or if it succeeds $success
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] all compile to ("
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try $action if it succeeds $success if it fails $fallback
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try $action if it fails $fallback if it succeeds $success
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] all compile to:
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$success_lua = ($success as lua)
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if ((#"\$success_lua") > 0): $success_lua, add "\n"
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$success_lua, prepend "-- Success:\n"
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$success_lua, add "if not _fell_through then return table.unpack(_result, 2) end"
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$fallback_lua = ($fallback as lua)
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if ((#"\$fallback_lua") > 0):
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$fallback_lua, prepend "\nlocal function failure() return _result[2] end\n"
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$fallback_lua, prepend "-- Failure:"
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return
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Lua ("
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do
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local fell_through = false
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local err, erred = nil, false
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local ok, ret = xpcall(function()
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local _fell_through = false
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local _result = {pcall(function()
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\($action as lua)
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fell_through = true
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end, function(\(=lua "\$fallback and \($msg as lua expr) or ''"))
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local ok, ret = pcall(function()
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\((=lua "\$fallback or \$msg") as lua)
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end)
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if not ok then err, erred = ret, true end
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end)
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if ok then
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\($success as lua)
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if not fell_through then
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return ret
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end
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elseif erred then
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error(err, 0)
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_fell_through = true
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end)}
|
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if _result[1] then
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\$success_lua
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else
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\$fallback_lua
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end
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end
|
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")
|
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")
|
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|
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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|
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(try $action) parses as
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try $action and if it succeeds (do nothing) or if it barfs (do nothing)
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try $action if it succeeds (do nothing) if it fails (do nothing)
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(try $action and if it barfs $msg $fallback) parses as
|
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try $action and if it succeeds (do nothing) or if it barfs $msg $fallback
|
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(try $action if it fails $msg $fallback) parses as
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try $action if it succeeds (do nothing) if it fails $msg $fallback
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|
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(try $action and if it succeeds $success) parses as
|
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try $action and if it succeeds $success or if it barfs (do nothing)
|
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(try $action if it succeeds $success) parses as
|
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try $action if it succeeds $success if it fails (do nothing)
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|
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(try $action if it fails $fallback if it succeeds $success) parses as
|
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try $action if it succeeds $success if it fails $fallback
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|
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test:
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$success = (no)
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try:
|
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do: fail
|
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..then always:
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$success = (yes)
|
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..if it succeeds:
|
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fail "'try ... then always ...' didn't propagate failure"
|
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|
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unless $success:
|
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fail "'try ... then always ...' didn't execute the 'always' code"
|
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|
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(do $action then always $final_action) compiles to ("
|
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do -- do/then always
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local _fell_through = false
|
||||
local _results = {pcall(function()
|
||||
\($action as lua)
|
||||
_fell_through = true
|
||||
end)}
|
||||
\($final_action as lua)
|
||||
if not _results[1] then error(_results[2], 0) end
|
||||
if not _fell_through then return table.unpack(_results, 2) end
|
||||
end
|
||||
")
|
||||
|
||||
~~~
|
||||
|
||||
(barf $) parses as (fail $)
|
||||
(assume $1 or barf $2) parses as (unless $1: fail $2)
|
||||
|
||||
@ -3,7 +3,6 @@
|
||||
This file contains definitions of operators like "+" and "and".
|
||||
|
||||
use "core/metaprogramming.nom"
|
||||
use "core/errors.nom"
|
||||
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
|
||||
@ -168,7 +168,11 @@ blank_text_lines <-
|
||||
{~ (%nl ((ws* -> '') (&%nl / !.) / (=curr_indent -> '') &[^%nl]))+ ~}
|
||||
|
||||
text_interpolation <-
|
||||
("\" (indented_block (blank_lines =curr_indent "..")? / indented_expression))
|
||||
({|
|
||||
-- %indentation will backtrack and match the actual indentation of the current line
|
||||
"\" {:curr_indent: %indentation :}
|
||||
(indented_block (blank_lines =curr_indent "..")? / indented_expression)
|
||||
|} -> unpack)
|
||||
/ inline_text_interpolation
|
||||
|
||||
|
||||
|
||||
@ -304,7 +304,7 @@ local compile = setmetatable({
|
||||
lua:add(",")
|
||||
end
|
||||
if lua:trailing_line_len() + #(entry_lua:text():match("^[\n]*")) > MAX_LINE then
|
||||
lua:add("\n")
|
||||
lua:add("\n ")
|
||||
elseif needs_comma then
|
||||
lua:add(" ")
|
||||
end
|
||||
@ -417,6 +417,8 @@ local compile = setmetatable({
|
||||
if tree[i].type == "Comment" then
|
||||
items_lua:add("\n")
|
||||
sep = ''
|
||||
elseif items_lua:trailing_line_len() > MAX_LINE then
|
||||
sep = ',\n '
|
||||
else
|
||||
sep = ', '
|
||||
end
|
||||
|
||||
@ -234,7 +234,7 @@ compile = setmetatable({
|
||||
entry_lua\add as_lua(v)
|
||||
if needs_comma then lua\add ","
|
||||
if lua\trailing_line_len! + #(entry_lua\text!\match("^[\n]*")) > MAX_LINE
|
||||
lua\add "\n"
|
||||
lua\add "\n "
|
||||
elseif needs_comma
|
||||
lua\add " "
|
||||
lua\add entry_lua
|
||||
@ -322,6 +322,8 @@ compile = setmetatable({
|
||||
if tree[i].type == "Comment"
|
||||
items_lua\add "\n"
|
||||
sep = ''
|
||||
elseif items_lua\trailing_line_len! > MAX_LINE
|
||||
sep = ',\n '
|
||||
else
|
||||
sep = ', '
|
||||
i += 1
|
||||
|
||||
@ -26,6 +26,13 @@ do
|
||||
_with_0.unpack = unpack or table.unpack
|
||||
_with_0["nil"] = Cc(nil)
|
||||
_with_0.userdata = Carg(1)
|
||||
_with_0.indentation = lpeg.Cmt(P(0), function(s, i)
|
||||
local sub = string.sub
|
||||
while i > 1 and sub(s, i - 1, i - 1) ~= '\n' do
|
||||
i = i - 1
|
||||
end
|
||||
return true, (s:match("^ *", i))
|
||||
end)
|
||||
_with_0.utf8_char = (R("\194\223") * R("\128\191") + R("\224\239") * R("\128\191") * R("\128\191") + R("\240\244") * R("\128\191") * R("\128\191") * R("\128\191"))
|
||||
_with_0.Tree = function(t, userdata)
|
||||
return userdata.make_tree(t, userdata)
|
||||
|
||||
@ -25,6 +25,13 @@ DEFS = with {}
|
||||
.unpack = unpack or table.unpack
|
||||
.nil = Cc(nil)
|
||||
.userdata = Carg(1)
|
||||
-- Always match and capture the indentation (spaces only) of the current line
|
||||
-- i.e. the leading space of the chunk of non-newline characters leading up to s[i]
|
||||
.indentation = lpeg.Cmt P(0),
|
||||
(s, i)->
|
||||
sub = string.sub
|
||||
while i > 1 and sub(s,i-1,i-1) != '\n' do i -= 1
|
||||
return true, (s\match("^ *", i))
|
||||
.utf8_char = (
|
||||
R("\194\223")*R("\128\191") +
|
||||
R("\224\239")*R("\128\191")*R("\128\191") +
|
||||
|
||||
@ -42,11 +42,30 @@ repeat:
|
||||
|
||||
if ((size of $buff) == 0): stop
|
||||
$buff = ($buff, joined)
|
||||
|
||||
# TODO: support local variables
|
||||
spoof file $buff
|
||||
try:
|
||||
$ret = (run $buff)
|
||||
$tree = ($buff parsed)
|
||||
..and if it barfs $err:
|
||||
say $err
|
||||
do next
|
||||
|
||||
unless $tree:
|
||||
do next
|
||||
|
||||
for $chunk in $tree:
|
||||
try:
|
||||
$lua = ($chunk as lua)
|
||||
..and if it barfs $err: say $err
|
||||
|
||||
unless $lua:
|
||||
do next
|
||||
|
||||
# TODO: this is a bit hacky, it just defaults variables to global
|
||||
so that stuff mostly works across multiple lines. It would be
|
||||
nicer if local variables actually worked.
|
||||
$lua, remove free vars
|
||||
try:
|
||||
$ret = (run $lua)
|
||||
..and if it barfs $err: say $err
|
||||
..or if it succeeds:
|
||||
if (type of $ret) is:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user