syntax_data: {"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"base.features"}]}
source_snippet:     base.features = "+mmx,+sse,+sse2,+sse3,+ssse3".into();
context_before:     base.cpu = "pentium4".into();
context_after:     base.stack_probes = StackProbeType::Inline;