syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"r27:"}]}
source_snippet:         r27: reg = ["r27", "i3"], // % reserved_i3
context_before:         r26: reg = ["r26", "i2"], // % reserved_i2
context_after:         r28: reg = ["r28", "i4"], // % reserved_i4