"Huge code base" is a pretty vague metric. Huge in what, lines of code? Binary size?

I'd argue that neither of these are really a good measure, I'm more interested in the concepts that a source file captures than its size in kb, because these concepts correlate directly to how easy it will be to evolve that code base in the future. There is a point of diminishing return in trying to make the code too compact, which basically means you're optimizing in one dimension at the detriments of all the others.