Incremental progress towards working.

core/metaprogramming.nom

@@ -26,7 +26,7 @@ immediately:
             end
             local body_lua = nomsu:tree_to_lua(\%lua):as_statements();
             body_lua:declare_locals(args);
-            lua:append("\\n    ", body_lua, "\\nend);")
+            lua:append(")\\n    ", body_lua, "\\nend);")
             return lua;
         end);
 

lua_obj.moon

@@ -56,6 +56,7 @@ class Lua
     declare_locals: (skip={})=>
         if next(skip) == 1
             skip = {[s]:true for s in *skip}
+        if #@free_vars > 0
             @prepend "local #{concat @free_vars, ", "};\n"
         for var in *@free_vars do skip[var] = true
         for bit in *@bits
@@ -66,7 +67,9 @@ class Lua
         buff = {}
         for b in *@bits
             buff[#buff+1] = tostring(b)
-        return concat(buff, "")
+        ret = concat(buff, "")
+        assert(not ret\match(".*table: 0x.*"))
+        return ret
 
     __len: =>
         len = 0
@@ -96,7 +99,6 @@ class Lua
             lua_filename:lua_chunkname, lua_file:lua_str
             lua_to_nomsu: {}, nomsu_to_lua: {}
         }
-        metadata, lua_offset = {}, 1
         lua_offset = 1
         walk = (lua)->
             if type(lua) == 'string'
@@ -106,7 +108,7 @@ class Lua
                 for b in *lua.bits
                     walk b
                 lua_stop = lua_offset
-                nomsu_src, lua_src = lua.souce, Location(lua_chunkname, lua_str, lua_start, lua_stop)
+                nomsu_src, lua_src = lua.source, Location(lua_chunkname, lua_str, lua_start, lua_stop)
                 metadata.lua_to_nomsu[lua_src] = nomsu_src
                 metadata.nomsu_to_lua[nomsu_src] = lua_src
         walk self
@@ -119,6 +121,14 @@ class LuaValue extends Lua
     new: (@source, ...)=>
         @bits = {...}
 
+    __tostring: =>
+        buff = {}
+        for b in *@bits
+            buff[#buff+1] = tostring(b)
+        ret = concat(buff, "")
+        assert(not ret\match(".*table: 0x.*"))
+        return ret
+
     as_statements: =>
         bits = {unpack @bits}
         bits[#bits+1] = ";"

nomsu.lua

@@ -916,8 +916,8 @@ do
       elseif "FunctionCall" == _exp_0 then
         insert(self.compilestack, tree)
         local stub = self:tree_to_stub(tree)
-        local fn = rawget(self.environment.ACTIONS, stub)
+        local action = rawget(self.environment.ACTIONS, stub)
-        local metadata = self.action_metadata[fn]
+        local metadata = self.action_metadata[action]
         if metadata and metadata.compile_time then
           local args
           do
@@ -948,7 +948,7 @@ do
             end
             args = new_args
           end
-          local lua = fn(unpack(args))
+          local lua = action(unpack(args))
           remove(self.compilestack)
           return lua
         elseif not metadata and self.__class.math_patt:match(stub) then
@@ -1419,9 +1419,7 @@ do
       end)
       self:define_compile_action("!! code location !!", get_line_no(), function()
         local tree = nomsu.compilestack[#nomsu.compilestack - 1]
-        return LuaValue(tree.source, {
+        return LuaValue(tree.source, repr(tostring(tree.source)))
-          repr(tostring(tree.source))
-        })
       end)
       self:define_action("run file %filename", get_line_no(), function(_filename)
         return nomsu:run_file(_filename)
@@ -1430,9 +1428,7 @@ do
         local tree = nomsu.compilestack[#nomsu.compilestack - 1]
         local filename = nomsu:tree_to_value(_filename)
         nomsu:use_file(filename)
-        return LuaValue(tree.source, {
+        return LuaValue(tree.source, "nomsu:use_file(" .. tostring(repr(filename)) .. ")")
-          "nomsu:use_file(" .. tostring(repr(filename)) .. ")"
-        })
       end)
     end
   }
@@ -1510,6 +1506,9 @@ do
         self.environment[k] = v
       end
       self.environment.Tuple = Tuple
+      self.environment.Lua = Lua
+      self.environment.LuaValue = LuaValue
+      self.environment.Location = Location
       self.environment.ACTIONS = setmetatable({ }, {
         __index = function(self, key)
           return error("Attempt to run undefined action: " .. tostring(key), 0)
@@ -1597,21 +1596,37 @@ if arg and debug_getinfo(2).func ~= require then
       return line_table
     end
   })
-  debug.getinfo = function(...)
+  debug.getinfo = function(thread, f, what)
-    local info = debug_getinfo(...)
+    if what == nil then
+      f, what, thread = thread, f, nil
+    end
+    if type(f) == 'number' then
+      f = f + 1
+    end
+    local info
+    if thread == nil then
+      info = debug_getinfo(f, what)
+    else
+      info = debug_getinfo(thread, f, what)
+    end
     if not info or not info.func then
       return info
     end
-    if info.source and info.source:sub(1, 1) ~= "@" and LINE_STARTS[info.source] then
     do
       local metadata = nomsu.action_metadata[info.func]
       if metadata then
         info.name = metadata.aliases[1]
       end
     end
+    local is_nomsu, nomsu_line = pcall(lua_line_to_nomsu_line, info.short_src, info.linedefined)
+    if is_nomsu then
       if info.source:sub(1, 1) == "@" then
         error("Not-yet-loaded source: " .. tostring(info.source))
       end
+      info.linedefined = nomsu_line
+      info.currentline = lua_line_to_nomsu_line(info.short_src, info.currentline)
+      info.short_src = metadata.source.text_name
+      info.source = metadata.source.text
     else
       if info.short_src and info.short_src:match("^.*%.moon$") then
         local line_table = moonscript_line_tables[info.short_src]

nomsu.moon

@@ -34,6 +34,7 @@ debug_getinfo = debug.getinfo
 -- Do a pass on all actions to enforce parameters-are-nouns heuristic
 -- Maybe do some sort of lazy definitions of actions that defer until they're used in code
 -- Add a ((%x foo %y) where {x:"asdf", y:"fdsa"}) compile-time action for substitution
+-- Allow plain text backslash like: "\n" in longstrings without requiring "\\n"
 
 FILE_CACHE = setmetatable {}, {
     __index: (filename)=>
@@ -215,6 +216,9 @@ class NomsuCompiler
         }
         for k,v in pairs(Types) do @environment[k] = v
         @environment.Tuple = Tuple
+        @environment.Lua = Lua
+        @environment.LuaValue = LuaValue
+        @environment.Location = Location
         @environment.ACTIONS = setmetatable({}, {__index:(key)=>
             error("Attempt to run undefined action: #{key}", 0)
         })
@@ -677,16 +681,16 @@ class NomsuCompiler
                 insert @compilestack, tree
 
                 stub = @tree_to_stub tree
-                fn = rawget(@environment.ACTIONS, stub)
+                action = rawget(@environment.ACTIONS, stub)
 
-                metadata = @action_metadata[fn]
+                metadata = @action_metadata[action]
                 if metadata and metadata.compile_time
                     args = [arg for arg in *tree.value when arg.type != "Word"]
                     -- Force all compile-time actions to take a tree location
                     if metadata and metadata.arg_orders
                         new_args = [args[p] for p in *metadata.arg_orders[stub]]
                         args = new_args
-                    lua = fn(unpack(args))
+                    lua = action(unpack(args))
                     remove @compilestack
                     return lua
                 elseif not metadata and @@math_patt\match(stub)
@@ -1005,13 +1009,13 @@ class NomsuCompiler
             lua = nomsu\tree_to_lua(_block)\as_statements!
             lua\declare_locals!
             nomsu\run_lua(lua)
-            return Lua _block.source, "if IMMEDIATE then\n", lua, "\nend"
+            return Lua(_block.source, "if IMMEDIATE then\n", lua, "\nend")
 
         @define_compile_action "lua> %code", get_line_no!, (_code)->
             if _code.type != "Text"
                 return LuaValue(_code.source, "nomsu:run_lua(",nomsu\tree_to_lua(_code),")")
 
-            lua = Lua _code.source
+            lua = Lua(_code.source)
             for bit in *_code.value
                 if type(bit) == "string"
                     lua\append bit
@@ -1041,7 +1045,7 @@ class NomsuCompiler
 
         @define_compile_action "!! code location !!", get_line_no!, ->
             tree = nomsu.compilestack[#nomsu.compilestack-1]
-            return LuaValue(tree.source, {repr(tostring(tree.source))})
+            return LuaValue(tree.source, repr(tostring(tree.source)))
 
         @define_action "run file %filename", get_line_no!, (_filename)->
             return nomsu\run_file(_filename)
@@ -1050,7 +1054,7 @@ class NomsuCompiler
             tree = nomsu.compilestack[#nomsu.compilestack-1]
             filename = nomsu\tree_to_value(_filename)
             nomsu\use_file(filename)
-            return LuaValue(tree.source, {"nomsu:use_file(#{repr filename})"})
+            return LuaValue(tree.source, "nomsu:use_file(#{repr filename})")
 
 -- Only run this code if this file was run directly with command line arguments, and not require()'d:
 if arg and debug_getinfo(2).func != require
@@ -1081,17 +1085,23 @@ if arg and debug_getinfo(2).func != require
             return line_table
     }
 
-    debug.getinfo = (...)->
+    debug.getinfo = (thread,f,what)->
-        info = debug_getinfo(...)
+        if what == nil
+            f,what,thread = thread,f,nil
+        if type(f) == 'number' then f += 1 -- Account for this wrapper function
+        info = if thread == nil
+            debug_getinfo(f,what)
+        else debug_getinfo(thread,f,what)
         if not info or not info.func then return info
-        if info.source and info.source\sub(1,1) != "@" and LINE_STARTS[info.source]
         if metadata = nomsu.action_metadata[info.func]
             info.name = metadata.aliases[1]
+        is_nomsu, nomsu_line = pcall(lua_line_to_nomsu_line, info.short_src, info.linedefined)
+        if is_nomsu
             if info.source\sub(1,1) == "@" then error("Not-yet-loaded source: #{info.source}")
-            --info.linedefined = lua_line_to_nomsu_line(info.short_src, info.linedefined)
+            info.linedefined = nomsu_line
-            --info.currentline = lua_line_to_nomsu_line(info.short_src, info.currentline)
+            info.currentline = lua_line_to_nomsu_line(info.short_src, info.currentline)
-            --info.short_src = metadata.source.text_name
+            info.short_src = metadata.source.text_name
-            --info.source = metadata.source.text
+            info.source = metadata.source.text
         else
             if info.short_src and info.short_src\match("^.*%.moon$")
                 line_table = moonscript_line_tables[info.short_src]