luzer: hide private functions

The patch puts private functions to the `_internal` table.

Needed for the following commit.

Author: ligurio

luzer/init.lua

@@ -52,10 +52,12 @@ return {
     Fuzz = Fuzz,
     FuzzedDataProvider = luzer_impl.FuzzedDataProvider,
 
-    _LLVM_VERSION = luzer_impl._LLVM_VERSION,
-    _LUA_VERSION = luzer_impl._LUA_VERSION,
-    _LUZER_VERSION = luzer_impl._LUZER_VERSION,
-
-    _set_custom_mutator = luzer_impl._set_custom_mutator,
-    _mutate = luzer_impl._mutate,
+    _internal = {
+        LLVM_VERSION = luzer_impl._LLVM_VERSION,
+        LUA_VERSION = luzer_impl._LUA_VERSION,
+        LUZER_VERSION = luzer_impl._LUZER_VERSION,
+
+        set_custom_mutator = luzer_impl._set_custom_mutator,
+        mutate = luzer_impl._mutate,
+    }
 }

luzer/tests/test_unit.lua

@@ -7,10 +7,9 @@ end
 
 debug.sethook(trace, "l")
 
--- luzer._LUZER_VERSION
-assert(type(luzer._LUZER_VERSION) == "string")
-assert(type(luzer._LLVM_VERSION) == "string")
-assert(type(luzer._LUA_VERSION) == "string")
+assert(type(luzer._internal.LUZER_VERSION) == "string")
+assert(type(luzer._internal.LLVM_VERSION) == "string")
+assert(type(luzer._internal.LUA_VERSION) == "string")
 
 local ok
 local err
@@ -185,19 +184,19 @@ local function custom_mutator(data, size, max_size, seed)
     return data
 end
 
--- luzer._set_custom_mutator()
+-- luzer._internal.set_custom_mutator()
 assert(luzer_custom_mutator == nil)
-luzer._set_custom_mutator(custom_mutator)
+luzer._internal.set_custom_mutator(custom_mutator)
 assert(luzer_custom_mutator ~= nil)
 assert(type(luzer_custom_mutator) == "function")
 local buf = "data"
 assert(luzer_custom_mutator(buf, #buf, #buf, math.random(1, 10)) == buf)
 luzer_custom_mutator = nil -- Clean up.
 
--- luzer._mutate()
-luzer._set_custom_mutator(custom_mutator)
+-- luzer._internal.mutate()
+luzer._internal.set_custom_mutator(custom_mutator)
 assert(luzer_custom_mutator ~= nil)
--- luzer._mutate(buf, #buf, #buf, math.random(1, 10)) -- TODO
+-- luzer._internal.mutate(buf, #buf, #buf, math.random(1, 10)) -- TODO
 luzer_custom_mutator = nil -- Clean up.
 
 print("Success!")