syntax_data: {"ast_node_type":"other","tokens":[{"end":18,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:     if force_ffi {
context_before:     let force_ffi = env::var_os(&*ENV_FORCE_FFI).is_some();
context_after:         println!("cargo:rustc-link-lib=dylib=ffi");