1. A system for automatically identifying compound refactorings of program code through quantitative metric analysis, comprising: program code comprising program statements written in accordance with a programming language and defining operations executed following transformation into machine code; and a development platform to build compound refactorings, comprising: a refactoring engine to refactor the program code by evaluating one or more of the program statements against a compound refactoring comprising a set of one or more individual refactorings; a code validator to validate the application of the refactorings to the program statements for each evaluated refactoring; and a quantitative measurer to analyze a quantitative measure against a threshold to reflect a relative difference between the program statements prior to and after application of the refactorings.