Generating valid c code, more work on null values

test3.kl

@@ -1,7 +1,5 @@
-
 /*
-
-Player :: struct 
+Player :: struct
   id  : int
   name: String
 
@@ -12,7 +10,7 @@ compound_of_struct: Player = {
 
 second_compound_syntax := :Player{...}
 
-max :: (a: int, b: int) { if a > b then return a; return b; }
+max_folding :: (a: int, b: int) { if a > b { return a; } return b; }
 
 max :: (a: int, b: int)
   if a > b then return a
@@ -22,22 +20,34 @@ max :: (a: int, b: int)
 { and } - treated as new line scope and end of new line scope
 */
 
+//-----------------------------------------------------------------------------
+// Function types
+//-----------------------------------------------------------------------------
 test_function :: (thing: int): ^int
+function_type: (thing: int): ^int = test_function
+const_function_alias :: test_function
+null_function: (t: int): ^int = null
 
 //-----------------------------------------------------------------------------
 // Booleans
 //-----------------------------------------------------------------------------
 boolean: bool      = true
 value_of_bool: int = cast(boolean: int)
-base              := null
+
+//-----------------------------------------------------------------------------
+// Nulls
+//-----------------------------------------------------------------------------
+int_null: int = null
+str_null: String = null
+bool_null: bool = null
 
 //-----------------------------------------------------------------------------
 // Compound expressions
 //-----------------------------------------------------------------------------
-array1: [4]int = {1,2,3,4}
+array1: [4]int  = {1,2,3,4}
 array2: [32]int = {1,2,3,4}
-array3: [32]int   = {
-  [0] = 0,
+array3: [32]int = {
+  [0] = null,
   [1] = 1,
   [31] = 31,
 }
@@ -61,8 +71,8 @@ implicit_str :: "Hello world"
 //-----------------------------------------------------------------------------
 // Pointers
 //-----------------------------------------------------------------------------
-pointer:     ^int = cast(null: ^int)
-pointer2:    ^int = null
+pointer1:    ^int = null
+pointer2:    ^int = pointer1
 pointer3:   ^^int = null
 
 //-----------------------------------------------------------------------------