syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"Category::Constant"}]}
source_snippet:             Category::Constant | Category::Place | Category::Rvalue(..) => {
context_before:             }
context_after:                 let operand = unpack!(block = this.as_temp(block, scope, expr_id, Mutability::Mut));