Revert UVL optimizations

2 files changed, 77 insertions, 61 deletions

diff --git a/libs/uvl/luasrc/uvl.lua b/libs/uvl/luasrc/uvl.lua
index acbdccde68..98e7dfba6a 100644
--- a/libs/uvl/luasrc/uvl.lua
+++ b/libs/uvl/luasrc/uvl.lua
@@ -23,13 +23,12 @@ module( "luci.uvl", package.seeall )
 
 require("luci.fs")
 require("luci.util")
-local uci = require("luci.model.uci")
+require("luci.model.uci")
 require("luci.uvl.errors")
 require("luci.uvl.datatypes")
 require("luci.uvl.validation")
 require("luci.uvl.dependencies")
 
-local cursor = uci.cursor()
 
 TYPE_SCHEME   = 0x00
 TYPE_CONFIG   = 0x01
@@ -832,37 +831,48 @@ function uvlitem.sid(self)
 end
 
 function uvlitem.scheme(self, opt)
-	local s = self._scheme
-
-	if not s then
-		s = self.s and self.s.packages and self.s.packages[self.sref[1]]
-		if #self.sref == 2 then
-			s = s and s.sections and s.sections[self.sref[2]]
-		elseif #self.sref > 2 then
-			s = s and s.variables and s.variables[self.sref[2]]
-				and s.variables[self.sref[2]][self.sref[3]]
-		end
-		self._scheme = s
+	local s
+
+	if #self.sref == 4 or #self.sref == 3 then
+		s = self.s and self.s.packages
+		s = s      and s[self.sref[1]]
+		s = s      and s.variables
+		s = s      and s[self.sref[2]]
+		s = s      and s[self.sref[3]]
+	elseif #self.sref == 2 then
+		s = self.s and self.s.packages
+		s = s      and s[self.sref[1]]
+		s = s      and s.sections
+		s = s      and s[self.sref[2]]
+	else
+		s = self.s and self.s.packages
+		s = s      and s[self.sref[1]]
 	end
 
-	return opt and (s and s[opt]) or s
+	if s and opt then
+		return s[opt]
+	elseif s then
+		return s
+	end
 end
 
 function uvlitem.config(self, opt)
-	local c = self._config
+	local c
 
-	if not c then
+	if #self.cref == 4 or #self.cref == 3 then
+		c = self.c and self.c[self.cref[2]] or nil
+		c = c      and c[self.cref[3]]      or nil
+	elseif #self.cref == 2 then
+		c = self.c and self.c[self.cref[2]] or nil
+	else
 		c = self.c
-		if #self.cref > 1 then
-			c = c and self.c[self.cref[2]]
-		end
-		if #self.cref > 2 then
-			c = c and c[self.cref[3]]
-		end		
-		self._config = c
 	end
 
-	return opt and (c and c[opt]) or c
+	if c and opt then
+		return c[opt]
+	elseif c then
+		return c
+	end
 end
 
 function uvlitem.title(self)
@@ -871,14 +881,15 @@ function uvlitem.title(self)
 end
 
 function uvlitem.type(self)
-	local _t = {
-		[TYPE_CONFIG] = 'config',
-		[TYPE_SECTION] = 'section',
-		[TYPE_OPTION] = 'option',
-		[TYPE_ENUM] = 'enum'
-	}
-
-	return _t[self.t]
+	if self.t == luci.uvl.TYPE_CONFIG then
+		return 'config'
+	elseif self.t == luci.uvl.TYPE_SECTION then
+		return 'section'
+	elseif self.t == luci.uvl.TYPE_OPTION then
+		return 'option'
+	elseif self.t == luci.uvl.TYPE_ENUM then
+		return 'enum'
+	end
 end
 
 function uvlitem.error(self, ...)
@@ -902,28 +913,22 @@ function uvlitem.parent(self)
 	if self.p then
 		return self.p
 	elseif #self.cref == 3 or #self.cref == 4 then
-		return section( self.s, self.c, self.cref[1], self.cref[2] )
+		return luci.uvl.section( self.s, self.c, self.cref[1], self.cref[2] )
 	elseif #self.cref == 2 then
-		return config( self.s, self.c, self.cref[1] )
+		return luci.uvl.config( self.s, self.c, self.cref[1] )
 	else
 		return nil
 	end
 end
 
--- Shared cache
-uvlitem._ucicache = {}
-
 function uvlitem._loadconf(self, co, c)
-	co = co or self._ucicache[c]
 	if not co then
-		local err
-		co, err = cursor:get_all(c)
+		local uci, err = luci.model.uci.cursor(), nil
+		co, err = uci:get_all(c)
 
 		if err then
 			self:error(ERR.UCILOAD(self, err))
 		end
-		
-		self._ucicache[c] = co
 	end
 	return co
 end
@@ -952,7 +957,7 @@ function scheme.__init__(self, scheme, co, c)
 	self.sref = { c }
 	self.c    = self:_loadconf(co, c)
 	self.s    = scheme
-	self.t    = TYPE_SCHEME
+	self.t    = luci.uvl.TYPE_SCHEME
 end
 
 --- Add an error to scheme.
@@ -965,7 +970,7 @@ end
 --- Get an associated config object.
 -- @return	Config instance
 function scheme.config(self)
-	local co = config( self.s, self.cref[1] )
+	local co = luci.uvl.config( self.s, self.cref[1] )
 	      co.p = self
 
 	return co
@@ -977,7 +982,7 @@ function scheme.sections(self)
 	local v = { }
 	if self.s.packages[self.sref[1]].sections then
 		for o, _ in pairs( self.s.packages[self.sref[1]].sections ) do
-			table.insert( v, option(
+			table.insert( v, luci.uvl.option(
 				self.s, self.c, self.cref[1], self.cref[2], o
 			) )
 		end
@@ -989,7 +994,7 @@ end
 -- @param s	Section to select
 -- @return	Section instance
 function scheme.section(self, s)
-	local so = section( self.s, self.c, self.cref[1], s )
+	local so = luci.uvl.section( self.s, self.c, self.cref[1], s )
 	      so.p = self
 
 	return so
@@ -1019,7 +1024,7 @@ function config.__init__(self, scheme, co, c)
 	self.sref = { c }
 	self.c    = self:_loadconf(co, c)
 	self.s    = scheme
-	self.t    = TYPE_CONFIG
+	self.t    = luci.uvl.TYPE_CONFIG
 end
 
 --- Get all section objects associated with this config.
@@ -1067,7 +1072,7 @@ function section.__init__(self, scheme, co, c, s)
 	self.sref = { c, co and co[s] and co[s]['.type'] or s }
 	self.c    = self:_loadconf(co, c)
 	self.s    = scheme
-	self.t    = TYPE_SECTION
+	self.t    = luci.uvl.TYPE_SECTION
 end
 
 --- Get all option objects associated with this section.
@@ -1118,7 +1123,7 @@ function option.__init__(self, scheme, co, c, s, o)
 	self.sref = { c, co and co[s] and co[s]['.type'] or s, o }
 	self.c    = self:_loadconf(co, c)
 	self.s    = scheme
-	self.t    = TYPE_OPTION
+	self.t    = luci.uvl.TYPE_OPTION
 end
 
 --- Get the value of this option.
@@ -1171,5 +1176,5 @@ function enum.__init__(self, scheme, co, c, s, o, v)
 	self.sref = { c, co and co[s] and co[s]['.type'] or s, o, v }
 	self.c    = self:_loadconf(co, c)
 	self.s    = scheme
-	self.t    = TYPE_ENUM
+	self.t    = luci.uvl.TYPE_ENUM
 end
diff --git a/libs/uvl/luasrc/uvl/dependencies.lua b/libs/uvl/luasrc/uvl/dependencies.lua
index ed5770f235..3aa3c73fa0 100644
--- a/libs/uvl/luasrc/uvl/dependencies.lua
+++ b/libs/uvl/luasrc/uvl/dependencies.lua
@@ -21,20 +21,31 @@ local ERR = luci.uvl.errors
 function _parse_reference( r, c, s, o )
 	local ref  = { }
 	local vars = {
-		config  = c,
-		section = s,
-		option  = o
+		config  = ( c or '$config'  ),
+		section = ( s or '$section' ),
+		option  = ( o or '$option'  )
 	}
 
-	for v in r:gmatch("[^.]+") do
-		table.insert(ref, (v:gsub( "%$(.+)", vars )))
+	for i, v in ipairs(luci.util.split(r,".")) do
+		table.insert(ref, (v:gsub( "%$(.+)", function(n) return vars[n] end )))
 	end
-	
-	if #ref < 2 then
-		table.insert(ref, 1, s or '$section')
-	end
-	if #ref < 3 then
-		table.insert(ref, 1, c or '$config')
+
+	if c or s then
+		if #ref == 1 and c and s then
+			ref = { c, s, ref[1] }
+		elseif #ref == 2 and c then
+			ref = { c, unpack(ref) }
+		elseif #ref ~= 3 then
+			ref = nil
+		end
+	else
+		if #ref == 1 then
+			ref = { '$config', '$section', ref[1] }
+		elseif #ref == 2 then
+			ref = { '$config', unpack(ref) }
+		elseif #ref ~= 3 then
+			ref = nil
+		end
 	end
 
 	return ref