syntax_data: {"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"r8:"}]}
source_snippet:         r8: reg, reg_nonzero = ["r8", "8"],
context_before:         r7: reg, reg_nonzero = ["r7", "7"],
context_after:         r9: reg, reg_nonzero = ["r9", "9"],