Change types to lowercase; add todos

3 files changed, 25 insertions, 11 deletions

@@ -10,7 +10,7 @@ local types = require("types")
 if not table.unpack then table.unpack = unpack end
 
 local function Env(inner, outer)
-        return setmetatable(inner, { __type = "Environment", __index = outer, })
+        return setmetatable(inner, { __type = "environment", __index = outer, })
 end
 
 local function Proc(params, body, env)
@@ -20,7 +20,7 @@ local function Proc(params, body, env)
                 env = env,
         }
         local mt = {
-                __type = "Procedure",
+                __type = "procedure",
                 __call =
                         function (self, ...)
                                 local inner = {}
@@ -37,7 +37,7 @@ end
 
 function eval.eval (x, e)
         e = e or global
-        if types.lamtype(x) == "Symbol" then
+        if types.lamtype(x) == "symbol" then
                 return e[x]
         elseif types.luatype(x) ~= "table" then
                 return x
@@ -20,8 +20,8 @@ you can set up a repl of lam to test it out:
 
 all of lua's math.* functions are available, as well as
 
-- +
-- *             (more math functions to come!)
+- +, *, /, -
+- =, <, >, <=, >=
 - null?
 - number?
 - symbol?
@@ -38,11 +38,24 @@ and special forms
 - define
 - lambda
 
+plus, some special lam functions:
+
+- luatype (the lua types of a value)
+- type (the lam type of the value)
+
 lam limitations
 ---------------
 
 - lam just has numbers and operations on them
 - uh, and symbols. and lists. and lambdas and environments.
 
+todo
+----
+
+- move schemestr from repl into pp and expand (lua/lam pp, etc)
+- add more datatypes (strings, anyone?!)
+- numeric tower (oof) (at least exact/inexact numbers)
+- ....
+
 ---------------------------
 contributions/help WELCOME!
@@ -6,21 +6,22 @@ types.luatype = type
 
 function types.lamtype (x)
         if types.luatype(x) == "string" then
-                return "Symbol"
+                return "symbol"
         elseif types.luatype(x) == "number" then
-                return "Number"
+                return "number"
         elseif getmetatable(x) and getmetatable(x).__type then
                 return getmetatable(x).__type
         elseif types.luatype(x) == "table" then
-                return "List"
+                return "list"
         else
                 return types.luatype(x)
         end
 end
 
-types["number?"] = function (x) return types.lamtype(x) == "Number" end
-types["symbol?"] = function (x) return types.lamtype(x) == "Symbol" end
-types["list?"] = function (x) return types.lamtype(x) == "List" end
+types["number?"] = function (x) return types.lamtype(x) == "number" end
+types["symbol?"] = function (x) return types.lamtype(x) == "symbol" end
+types["list?"] = function (x) return types.lamtype(x) == "list" end
+types["procedure?"] = function (x) return types.lamtype(x) == "procedure" end
 types["null?"] = function (x) return x == {} end
 
 ---