Allow filters to specify field value aliases in the conditions

CHANGES.txt

@@ -4,3 +4,7 @@
 
 See https://bitbucket.org/premake/premake-dev/wiki/What's_New_in_5.0
 for the complete list of changes from the Premake 4.x series.
+
+Since 5.0-alpha1:
+
+* filter() now accepts field value aliases in the conditions

src/base/criteria.lua

@@ -5,11 +5,13 @@
 -- and wildcard matches. Provides functions match match these criteria
 -- against various contexts.
 --
--- Copyright (c) 2012-2014 Jason Perkins and the Premake project
+-- Copyright (c) 2012-2015 Jason Perkins and the Premake project
 --
 
-	premake.criteria = criteria
-	local criteria = premake.criteria
+	local p = premake
+
+	p.criteria = criteria  -- criteria namespace is defined in C host
+	local criteria = p.criteria
 
 
 --
@@ -69,6 +71,15 @@
 				if prefix and not criteria._validPrefixes[prefix] then
 					return nil, string.format("Invalid field prefix '%s'", prefix)
 				end
+
+				-- check for field value aliases
+				if prefix then
+					local fld = p.field.get(prefix)
+					if fld and fld.aliases then
+						word[1] = fld.aliases[word[1]] or word[1]
+					end
+				end
+
 				table.insert(pattern, word)
 			end
 

src/base/field.lua

@@ -19,6 +19,7 @@
 -- Lists to hold all of the registered fields and data kinds
 
 	field._list = {}
+	field._loweredList = {}
 	field._kinds = {}
 
 	-- For historical reasons
@@ -94,6 +95,8 @@
 		end
 
 		field._list[f.name] = f
+		field._loweredList[f.name:lower()] = f
+
 		return f
 	end
 
@@ -105,6 +108,7 @@
 
 	function field.unregister(f)
 		field._list[f.name] = nil
+		field._loweredList[f.name:lower()] = nil
 	end
 
 
@@ -253,7 +257,7 @@
 ---
 
 	function field.get(name)
-		return field._list[name]
+		return field._list[name] or field._loweredList[name:lower()]
 	end
 
 

tests/base/test_criteria.lua

@@ -1,7 +1,7 @@
 --
 -- tests/base/test_criteria.lua
 -- Test suite for the criteria matching API.
--- Copyright (c) 2012-2014 Jason Perkins and the Premake project
+-- Copyright (c) 2012-2015 Jason Perkins and the Premake project
 --
 
 	local suite = test.declare("criteria")
@@ -308,3 +308,21 @@
 		test.isnil(crit)
 		test.isnotnil(err)
 	end
+
+
+--
+-- Should respect field value aliases, if present.
+--
+
+	function suite.passes_onAliasedValue()
+		premake.api.addAliases("system", { ["gnu-linux"] = "linux" })
+		crit = criteria.new { "system:gnu-linux" }
+		test.istrue(criteria.matches(crit, { system="linux" }))
+	end
+
+	function suite.passes_onAliasedValue_withMixedCase()
+		premake.api.addAliases("system", { ["gnu-linux"] = "linux" })
+		crit = criteria.new { "System:GNU-Linux" }
+		test.istrue(criteria.matches(crit, { system="linux" }))
+	end
+