added table syntax for var, closes #19

Build.moon

@@ -1,17 +1,17 @@
-public var 'MOONC', 'moonc'
-public var 'AMALG', 'amalg.lua'
-public var 'RM', 'rm', '-f', '--'
-public var 'LUA', 'lua5.3'
+public var MOONC: 'moonc'
+public var AMALG: 'amalg.lua'
+public var RM: 'rm', '-f', '--'
+public var LUA: 'lua5.3'
 
-var 'LIB_SRC', _.wildcard 'moonbuild/**.moon'
-var 'BIN_SRC', _.wildcard 'bin/*.moon'
+var LIB_SRC: _.wildcard 'moonbuild/**.moon'
+var BIN_SRC: _.wildcard 'bin/*.moon'
 
-var 'LIB_LUA', _.patsubst LIB_SRC, '%.moon', '%.lua'
-var 'BIN_LUA', _.patsubst BIN_SRC, '%.moon', '%.lua'
-var 'BIN', _.patsubst BIN_LUA, 'bin/%.lua', 'out/%'
-var 'LIB', 'out/moonbuild.lua'
+var LIB_LUA: _.patsubst LIB_SRC, '%.moon', '%.lua'
+var BIN_LUA: _.patsubst BIN_SRC, '%.moon', '%.lua'
+var BIN: _.patsubst BIN_LUA, 'bin/%.lua', 'out/%'
+var LIB: 'out/moonbuild.lua'
 
-var 'MODULES', _.foreach (_.patsubst LIB_LUA, '%.lua', '%'), => @gsub '/', '.'
+var MODULES: _.foreach (_.patsubst LIB_LUA, '%.lua', '%'), => @gsub '/', '.'
 
 with public default target 'all'
 	\after 'bin'

moonbuild/core/Variable.moon

@@ -4,7 +4,17 @@ class Variable
 
 	new: (@name, ...) =>
 		@public = false
-		if (select '#', ...) !=1 or (type ...) == 'table'
+		if (type @name) == 'table'
+			error "not a valid var table: #{next @name}" unless (type next @name) == 'string'
+			error "more than one var at once: #{next @name}, #{next @name, (next @name)}" if next @name, (next @name)
+			name = next @name
+			@name, param = name, @name
+			val = param[name]
+			if (select '#', ...) !=0 or (type val) == 'table'
+				@value = flatten val, ...
+			else
+				@value = val
+		elseif (select '#', ...) !=1 or (type ...) == 'table'
 			@value = flatten ...
 		else
 			@value = ...

moonbuild/env/init.moon

@@ -21,7 +21,7 @@ import flatten from _
 	rawset env, 'var', (name, ...) ->
 		var = Variable name, ...
 		ctx\addvar var
-		rawset varlayer, name, var.value
+		rawset varlayer, var.name, var.value
 		var
 
 	rawset env, 'target', (name, opts) ->

out/moonbuild.lua

@@ -2227,7 +2227,23 @@ do
     __init = function(self, name, ...)
       self.name = name
       self.public = false
-      if (select('#', ...)) ~= 1 or (type(...)) == 'table' then
+      if (type(self.name)) == 'table' then
+        if not ((type(next(self.name))) == 'string') then
+          error("not a valid var table: " .. tostring(next(self.name)))
+        end
+        if next(self.name, (next(self.name))) then
+          error("more than one var at once: " .. tostring(next(self.name)) .. ", " .. tostring(next(self.name, (next(self.name)))))
+        end
+        name = next(self.name)
+        local param
+        self.name, param = name, self.name
+        local val = param[name]
+        if (select('#', ...)) ~= 0 or (type(val)) == 'table' then
+          self.value = flatten(val, ...)
+        else
+          self.value = val
+        end
+      elseif (select('#', ...)) ~= 1 or (type(...)) == 'table' then
         self.value = flatten(...)
       else
         self.value = ...
@@ -2545,7 +2561,7 @@ return function(ctx)
   rawset(env, 'var', function(name, ...)
     local var = Variable(name, ...)
     ctx:addvar(var)
-    rawset(varlayer, name, var.value)
+    rawset(varlayer, var.name, var.value)
     return var
   end)
   rawset(env, 'target', function(name, opts)