Caching the result of all methods

I have a class which is essentially a collection of methods for some data transformations. In another words I have some data in my files and I use a few different code snippets to transform the textual data into something that I can easily query.

Now the methods often reuse each-other and as the core data is changing I'd like to simply cache the results of each method, for the speed reasons.

I don't want to change each method by adding:

^ methodsCache ifNil: [ methodsCache := "compute" ]

I want to use the power of Pharo reflection to accomplish my task without touching much of code.

One idea that I had is if I can run some code before each method, thing I can either return a cached value or continue the execution of the method and cache it's result