Fix issue #188

lib/span.nelua

@@ -103,7 +103,7 @@ require 'iterators'
       self.size = values.size
     ## else
       if #values > 0 then
-        self.data = (@*[0]T)(&values[#[values.type.subtype.is_sequence and 1 or 0]#])
+        self.data = (@*[0]T)(&values[#[values.type:implicit_deref_type().is_oneindexing and 1 or 0]#])
         self.size = (@usize)(#values)
       end
     ## end

src/README.md

@@ -3,14 +3,12 @@
 This is the Lua 5.4.4 interpreter used by Nelua, with the following changes:
 
 * Uses rpmalloc as the default memory allocator (usually much faster than the system's default memory allocator).
-* Libraries "hasher", "sys" and "lfs" are built-in (they are required by Nelua compiler).
+* Libraries "hasher", "lpeglabel", "sys" and "lfs" are bundled (they are required by Nelua compiler).
 * Use a distribution friendly LUA_ROOT in luaconf.h
 * Use -fno-crossjumping -fno-gcse in lua VM for a faster instruction execution.
 * C compilation flags are tuned to squeeze more performance from the Lua interpreter.
 * Execute `luainit.lua` code on startup, used to adjust `package.path`
 to make Nelua compiler files available with `require`.
 
-Patch for the changes are available in `lua-changes.patch` file.
-
 It is recommended to use this interpreter to have the same behavior
 and because it can be ~30% faster than the standard Lua.

tests/span_test.nelua

@@ -98,7 +98,8 @@ do -- vector to span
 end
 
 require 'sequence'
-do -- sequence to span
+
+do -- sequence to span (by pointer)
   local seq: sequence(integer) = {1,2,3,4}
   local s: span(integer) = &seq
   assert(s.size == 4 and s.data == &seq[1])
@@ -110,6 +111,18 @@ do -- sequence to span
   seq:destroy()
 end
 
+do -- sequence to span (by value)
+  local seq: sequence(integer) = {1,2,3,4}
+  local s: span(integer) = seq
+  assert(s.size == 4 and s.data == &seq[1])
+  assert(#s == 4 and s[0] == 1 and s[1] == 2 and s[2] == 3 and s[3] == 4)
+  s[0] = 5
+  assert(seq[1] == 5)
+  s = {}
+  assert(#s == 0 and s.data == nilptr)
+  seq:destroy()
+end
+
 do
   local Node = @record{
     tag: string,