syntax_data: {"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! type checking like all other code. In MIR building we finally detect whether this attribute is
context_before: //! decl macro that expands like any other, and the code goes through parsing, name resolution and
context_after: //! present, and if so we branch off into this module, which implements the attribute by