syntax_data: {"ast_node_type":"other","tokens":[{"end":106,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // https://github.com/llvm/llvm-project/blob/llvmorg-18.1.8/llvm/lib/TargetParser/Triple.cpp#L236-L282
context_before:     // Convert to the "canonical" OS name used by LLVM:
context_after:     let os = match os {