syntax_data: {"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"r23:"}]}
source_snippet:         r23: reg = ["r23","t7"],// feature high-register
context_before:         r22: reg = ["r22","t6"],// feature high-register
context_after:         r24: reg = ["r24","t8"],// feature high-register