Module:LibraryUtil

-- local libraryUtil = require( 'libraryUtil' ) -- libraryUtil is a standard scribunto module, the following commented out code is just to show what is inside it. Documentation about these functions can be found at https://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual#libraryUtil --[=[ local libraryUtil = {} function libraryUtil.checkType( name, argIdx, arg, expectType, nilOk ) if arg == nil and nilOk then return end if type( arg ) ~= expectType then local msg = string.format( "bad argument #%d to '%s' (%s expected, got %s)", argIdx, name, expectType, type( arg ) ) error( msg, 3 ) end end function libraryUtil.checkTypeMulti( name, argIdx, arg, expectTypes ) local argType = type( arg ) for _, expectType in ipairs( expectTypes ) do if argType == expectType then return end end local n = #expectTypes local typeList if n > 1 then typeList = table.concat( expectTypes, ', ', 1, n - 1 ) .. ' or ' .. expectTypes[n] else typeList = expectTypes[1] end local msg = string.format( "bad argument #%d to '%s' (%s expected, got %s)", argIdx, name, typeList, type( arg ) ) error( msg, 3 ) end function libraryUtil.checkTypeForIndex( index, value, expectType ) if type( value ) ~= expectType then local msg = string.format( "value for index '%s' must be %s, %s given", index, expectType, type( value ) ) error( msg, 3 ) end end function libraryUtil.checkTypeForNamedArg( name, argName, arg, expectType, nilOk ) if arg == nil and nilOk then return end if type( arg ) ~= expectType then local msg = string.format( "bad named argument %s to '%s' (%s expected, got %s)", argName, name, expectType, type( arg ) ) error( msg, 3 ) end end function libraryUtil.makeCheckSelfFunction( libraryName, varName, selfObj, selfObjDesc ) return function ( self, method ) if self ~= selfObj then error( string.format( "%s: invalid %s. Did you call %s with a dot instead of a colon, i.e. " .. "%s.%s() instead of %s:%s()?", libraryName, selfObjDesc, method, varName, method, varName, method ), 3 ) end end end ]=] function libraryUtil.makeCheckClassFunction( libraryName, varName, class, selfObjDesc ) return function ( self, method ) if getmetatable( self ) ~= class then error( string.format( "%s: invalid %s. Did you call %s with a dot instead of a colon, i.e. " .. "%s.%s() instead of %s:%s()?", libraryName, selfObjDesc, method, varName, method, varName, method ), 3 ) end end end return libraryUtil --