syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"r4:"}]}
source_snippet:         r4: reg = ["r4", "g4"], // % reserved_g4
context_before:         r3: reg = ["r3", "g3"], // % reserved_g3
context_after:         r5: reg = ["r5", "g5"] % reserved_g5,