syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"r27:"}]}
source_snippet:         r27: reg, reg_nonzero = ["r27", "27"],
context_before:         r26: reg, reg_nonzero = ["r26", "26"],
context_after:         r28: reg, reg_nonzero = ["r28", "28"],