New Lints for run time analysis for raw pointer referencing

I want to write new lints for run time Raw pointer referencing errors. But I need a mentor and detailed guidance material. Although, i have already followed and implemented This and this, but i could not found enough detailed helping material (documentation) for newcomers. For example, to analyse some rust wrong code using clippy lints. I am confused as there are lot functions/method in syntax::ast and other related crates, which function is useful for which scenario. For instance, if i want to detect that is there any unsafe or *mut or variable name “x”, so on so forth. So, how to detect this matter. I think ident.name = “unsafe” would not work.

Start with doc/adding_lints.md and the linked Clippy article, then inspect the syntax::ast APIs mentioned in the issue. A complete response would give newcomers concrete guidance for identifying unsafe code, raw-pointer types, and identifiers when designing these lints, with a clear example of how to validate the approach.