syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // gas accepts the following characters in symbols: a-z, A-Z, 0-9, ., _, $
context_before:         // gas doesn't!
context_after:         // NVPTX assembly has more strict naming rules than gas, so additionally, dots