User assertion for required condition check.

1 files changed, 3 insertions, 3 deletions

diff --git a/install.bat b/install.bat
index 79b71645..ab8618b9 100644
--- a/install.bat
+++ b/install.bat
@@ -431,8 +431,8 @@ local function get_registry(key, value)
         return nil

 end

 

--- requires vars.LUA_RUNTIME to be set before calling this function.

 local function get_visual_studio_directory()

+        assert(type(vars.LUA_RUNTIME)=="string", "requires vars.LUA_RUNTIME to be set before calling this function.")

         local major, minor = vars.LUA_RUNTIME:match('VCR%u*(%d+)(%d)$') -- MSVCR<x><y> or VCRUNTIME<x><y>

         if not major then return nil end

         local keys = {

@@ -446,8 +446,8 @@ local function get_visual_studio_directory()
         return nil

 end

 

--- requires vars.LUA_RUNTIME to be set before calling this function.

 local function get_windows_sdk_directory()

+        assert(type(vars.LUA_RUNTIME) == "string", "requires vars.LUA_RUNTIME to be set before calling this function.")

         -- Only v7.1 and v6.1 shipped with compilers

         -- Other versions requires a separate  installation of Visual Studio.

         -- see https://github.com/keplerproject/luarocks/pull/443#issuecomment-152792516

@@ -464,8 +464,8 @@ local function get_windows_sdk_directory()
         return get_registry(key, "InstallationFolder")

 end

 -- returns the batch command to setup msvc compiler path.

--- requires vars.LUA_RUNTIME and vars.UNAME_M to be set before calling this function.

 local function get_msvc_env_setup_cmd()

+        assert(type(vars.UNAME_M) == "string", "requires vars.UNAME_M to be set before calling this function.")

         local x64 = vars.UNAME_M=="x86_64"

 

         -- 1. try visual studio command line tools