Hash :
194c5429
Author :
Date :
2020-05-11T14:49:10
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macro_rules! write_html {
($w:expr, ) => (());
($w:expr, $e:tt) => (write!($w, "{}", $e));
($w:expr, $tag:ident [ $($inner:tt)* ] $($rest:tt)*) => {{
write!($w, "<{}>", stringify!($tag));
write_html!($w, $($inner)*);
write!($w, "</{}>", stringify!($tag));
write_html!($w, $($rest)*);
}};
}
----------------------------------------------------
[
["macro", "macro_rules!"],
" write_html ",
["punctuation", "{"],
["punctuation", "("],
["variable", "$w"],
["punctuation", ":"],
["fragment-specifier", "expr"],
["punctuation", ","],
["punctuation", ")"],
["operator", "=>"],
["punctuation", "("],
["punctuation", "("],
["punctuation", ")"],
["punctuation", ")"],
["punctuation", ";"],
["punctuation", "("],
["variable", "$w"],
["punctuation", ":"],
["fragment-specifier", "expr"],
["punctuation", ","],
["variable", "$e"],
["punctuation", ":"],
["fragment-specifier", "tt"],
["punctuation", ")"],
["operator", "=>"],
["punctuation", "("],
["macro", "write!"],
["punctuation", "("],
["variable", "$w"],
["punctuation", ","],
["string", "\"{}\""],
["punctuation", ","],
["variable", "$e"],
["punctuation", ")"],
["punctuation", ")"],
["punctuation", ";"],
["punctuation", "("],
["variable", "$w"],
["punctuation", ":"],
["fragment-specifier", "expr"],
["punctuation", ","],
["variable", "$tag"],
["punctuation", ":"],
["fragment-specifier", "ident"],
["punctuation", "["],
" $",
["punctuation", "("],
["variable", "$inner"],
["punctuation", ":"],
["fragment-specifier", "tt"],
["punctuation", ")"],
["operator", "*"],
["punctuation", "]"],
" $",
["punctuation", "("],
["variable", "$rest"],
["punctuation", ":"],
["fragment-specifier", "tt"],
["punctuation", ")"],
["operator", "*"],
["punctuation", ")"],
["operator", "=>"],
["punctuation", "{"],
["punctuation", "{"],
["macro", "write!"],
["punctuation", "("],
["variable", "$w"],
["punctuation", ","],
["string", "\"<{}>\""],
["punctuation", ","],
["macro", "stringify!"],
["punctuation", "("],
["variable", "$tag"],
["punctuation", ")"],
["punctuation", ")"],
["punctuation", ";"],
["macro", "write_html!"],
["punctuation", "("],
["variable", "$w"],
["punctuation", ","],
" $",
["punctuation", "("],
["variable", "$inner"],
["punctuation", ")"],
["operator", "*"],
["punctuation", ")"],
["punctuation", ";"],
["macro", "write!"],
["punctuation", "("],
["variable", "$w"],
["punctuation", ","],
["string", "\"</{}>\""],
["punctuation", ","],
["macro", "stringify!"],
["punctuation", "("],
["variable", "$tag"],
["punctuation", ")"],
["punctuation", ")"],
["punctuation", ";"],
["macro", "write_html!"],
["punctuation", "("],
["variable", "$w"],
["punctuation", ","],
" $",
["punctuation", "("],
["variable", "$rest"],
["punctuation", ")"],
["operator", "*"],
["punctuation", ")"],
["punctuation", ";"],
["punctuation", "}"],
["punctuation", "}"],
["punctuation", ";"],
["punctuation", "}"]
]
----------------------------------------------------
Checks this macro example.