Add support for redis built-ins

Author: mcraq

src/luacheck/builtin_standards/init.lua

@@ -2,6 +2,9 @@ local love = require "luacheck.builtin_standards.love"
 local minetest = require "luacheck.builtin_standards.minetest"
 local playdate = require "luacheck.builtin_standards.playdate"
 local ngx = require "luacheck.builtin_standards.ngx"
+local redis5 = require "luacheck.builtin_standards.redis5"
+local redis6 = require "luacheck.builtin_standards.redis6"
+local redis7 = require "luacheck.builtin_standards.redis7"
 local standards = require "luacheck.standards"
 
 local builtin_standards = {}
@@ -264,6 +267,9 @@ lua_defs.luajit = add_defs(make_min_def("luajit"), {
 })
 lua_defs.ngx_lua = add_defs(lua_defs.luajit, ngx)
 lua_defs.max = add_defs(lua_defs.lua51c, lua_defs.lua52c, lua_defs.lua53c, lua_defs.lua54c, lua_defs.luajit)
+lua_defs.redis5 = add_defs(lua_defs.lua51, redis5)
+lua_defs.redis6 = add_defs(lua_defs.redis5, redis6)
+lua_defs.redis7 = add_defs(lua_defs.redis6, redis7)
 
 for name, def in pairs(lua_defs) do
    builtin_standards[name] = def_to_std(def)

src/luacheck/builtin_standards/redis5.lua

@@ -0,0 +1,68 @@
+local empty = {}
+
+local redis = {
+    fields = {
+        ARGV = {
+            other_fields = true,
+        },
+        KEYS = {
+            other_fields = true,
+        },
+
+        redis = {
+            fields = {
+                call = empty,
+                pcall = empty,
+                error_reply = empty,
+                status_reply = empty,
+                sha1hex = empty,
+                log = empty,
+                set_repl = empty,
+                replicate_commands = empty,
+                breakpoint = empty,
+                debug = empty,
+            },
+        },
+
+        cjson = {
+            fields = {
+                decode = empty,
+                encode = empty,
+            },
+        },
+
+        struct = {
+            fields = {
+                pack = empty,
+                unpack = empty,
+                size = empty,
+            }
+        },
+
+        cmsgpack = {
+            fields = {
+                pack = empty,
+                unpack = empty,
+            }
+        },
+
+        bit = {
+            fields = {
+                tobit = empty,
+                tohex = empty,
+                bnot = empty,
+                bor = empty,
+                band = empty,
+                bxor = empty,
+                lshift = empty,
+                rshift = empty,
+                arshift = empty,
+                rol = empty,
+                ror = empty,
+                bswap = empty,
+            }
+        }
+    }
+}
+
+return redis

src/luacheck/builtin_standards/redis6.lua

@@ -0,0 +1,14 @@
+local empty = {}
+
+local redis = {
+    fields = {
+        redis = {
+            fields = {
+                setresp = empty,
+            }
+
+        }
+    }
+}
+
+return redis

src/luacheck/builtin_standards/redis7.lua

@@ -0,0 +1,14 @@
+local empty = {}
+
+local redis = {
+    fields = {
+        redis = {
+            REDIS_VERSION = {},
+            REDIS_VERSION_NUM = {},
+            acl_check_cmd = empty,
+            register_function = empty,
+        }
+    }
+}
+
+return redis