syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // types and `&[T]` types are converted back into patterns, so this can
context_before:         // Integer types are handled by `SwitchInt`, and constants with ADT
context_after:         // only be `&str`, `f32` or `f64`.