syntax_data: {"ast_node_type":"other","tokens":[{"end":28,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // t0-t8
context_before:                     r4, r5, r6, r7, r8, r9, r10, r11,
context_after:                     r12, r13, r14, r15, r16, r17, r18, r19, r20,