syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"r17:"}]}
source_snippet:         r17: reg = ["r17", "l1"], // % reserved_l1
context_before:         r16: reg = ["r16", "l0"], // % reserved_l0
context_after:         r18: reg = ["r18", "l2"], // % reserved_l2