Write a transform that turns expressions into statements

felixSchl

The current output is heavily based on expressions, meaning that we apply functions and feed the result into other functions etc. It would be interesting to explore a transform that would turn these expressions into statements by generating fresh variable names in the current block scope and then perform the wiring up. For example: Turn this: ``` purs_any_app(f, purs_any_app(g, purs_any_int_new(100))) ``` into this: ``` const ANY * $value0 = purs_any_int_new(100); const ANY * $value1 = purs_any_app(g, $value0); const ANY * $value2 = purs_any_app(f, $value1); return $value2; ``` At least one benefit of this is that it makes it easier to set breakpoints in generated programs. I am currently performing these transformations by hand when debugging generated output.

felixSchl

One thing to potentially look out for though is increased stack usage for all these temporary variables, especially with fat pointers (#59, #54.) Perhaps clang and gcc already optimize for this? It would be nice to perform these optimisations on our AST as well, however, to produce more readable and more terse output. #54 introduces a *LOT* of noise in the generated code.