Fixes to support a wider range of field kinds

- Rename api.checkvalue() to api.checkValue() and swap argument order for consistency
- Add kind argument to api.checkValue() to identify which segment is being tested
- Limit wildcard test in remove() to string values
- Return error message from field.new() instead of raising error internally

src/actions/vstudio/_vstudio.lua

@@ -291,8 +291,8 @@
 --
 
 	function vstudio.archFromPlatform(platform)
-		local system = premake.api.checkvalue(platform, premake.fields.system)
+		local system = premake.api.checkValue(premake.fields.system, platform)
-		local arch = premake.api.checkvalue(platform, premake.fields.architecture)
+		local arch = premake.api.checkValue(premake.fields.architecture, platform)
 		return architecture(system, arch)
 	end
 

src/base/api.lua

@@ -91,7 +91,11 @@
 		end
 
 		-- add this new field to my master list
-		field = premake.field.new(field)
+		field, err = premake.field.new(field)
+		if not field then
+			error(err)
+		end
+
 
 		-- Flag fields which contain filesystem paths. The context object will
 		-- use this information when expanding tokens, to ensure that the paths
@@ -357,7 +361,7 @@
 				table.insert(removes, value)
 
 			else
-				local value, err, additional = api.checkvalue(value, field)
+				local value, err, additional = api.checkValue(field, value)
 				if err then
 					error { msg=err }
 				end
@@ -382,17 +386,21 @@
 --
 -- Check to see if a value is valid for a particular field.
 --
--- @param value
---    The value to check.
 -- @param field
 --    The field to check against.
+-- @param value
+--    The value to check.
+-- @param kind
+--    The kind of data currently being checked, corresponding to
+--    one segment of the field's kind string (e.g. "string"). If
+--    not set, defaults to "string".
 -- @return
 --    If the value is valid for this field, the canonical version
 --    of that value is returned. If the value is not valid two
 --    values are returned: nil, and an error message.
 --
 
-	function api.checkvalue(value, field)
+	function api.checkValue(field, value, kind)
 		if not field.allowed then
 			return value
 		end
@@ -406,7 +414,7 @@
 
 		if not canonical then
 			if type(field.allowed) == "function" then
-				canonical = field.allowed(value)
+				canonical = field.allowed(value, kind or "string")
 			else
 				canonical = field.allowed[lowerValue]
 			end
@@ -754,7 +762,7 @@
 
 			if value ~= nil then
 				local err
-				value, err = api.checkvalue(value, field)
+				value, err = api.checkValue(field, value)
 				if err then
 					error { msg=err }
 				end

src/base/configset.lua

@@ -332,7 +332,9 @@
 
 		values = premake.field.remove(field, {}, values)
 		for i, value in ipairs(values) do
-			values[i] = path.wildcards(value):lower()
+			if type(value) == "string" then
+				values[i] = path.wildcards(value):lower()
+			end
 		end
 
 		-- add a list of removed values to the block

src/base/field.lua

@@ -83,7 +83,7 @@
 
 		-- All fields must have a valid store() function
 		if not field.accessor(f, "store") then
-			error("invalid field kind '" .. f._kind .. "'")
+			return nil, "invalid field kind '" .. f._kind .. "'"
 		end
 
 		field._list[f.name] = f
@@ -186,8 +186,8 @@
 			end
 
 			-- Split off the first piece from the rest of the kind. If the
-			-- incoming kind is "list:key:string", thisKind will "list" and
+			-- incoming kind is "list:key:string", thisKind will be "list"
-			-- nextKind will be "key:string".
+			-- and nextKind will be "key:string".
 
 			local thisKind = kind:match('(.-):') or kind
 			local nextKind = kind:sub(#thisKind + 2)
@@ -197,7 +197,7 @@
 
 			local functions = field._kinds[thisKind]
 			if not functions then
-				error("Invalid field kind '" .. thisKind .. "'")
+				return nil, "Invalid field kind '" .. thisKind .. "'"
 			end
 
 			local processor = functions[method]

src/base/oven.lua

@@ -441,8 +441,8 @@
 		local architecture = nil
 
 		if platform then
-			system = premake.api.checkvalue(platform, premake.fields.system) or system
+			system = premake.api.checkValue(premake.fields.system, platform) or system
-			architecture = premake.api.checkvalue(platform, premake.fields.architecture) or architecture
+			architecture = premake.api.checkValue(premake.fields.architecture, platform) or architecture
 		end
 
 		-- Wrap the projects's configuration set (which contains all of the information