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Add test of proc_macro::TokenStream's Debug
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‎src/test/ui/proc-macro/debug/auxiliary/macro-dump-debug.rs

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// force-host
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// no-prefer-dynamic
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#![crate_type = "proc-macro"]
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#![crate_name = "macro_dump_debug"]
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extern crate proc_macro;
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use proc_macro::TokenStream;
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#[proc_macro]
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pub fn dump_debug(tokens: TokenStream) -> TokenStream {
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eprintln!("{:?}", tokens);
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eprintln!("{:#?}", tokens);
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TokenStream::new()
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}

‎src/test/ui/proc-macro/debug/dump-debug.rs

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// run-pass
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// aux-build:macro-dump-debug.rs
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extern crate macro_dump_debug;
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use macro_dump_debug::dump_debug;
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dump_debug! {
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ident // ident
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r#ident // raw ident
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, // alone punct
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==> // joint punct
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() // empty group
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[_] // nonempty group
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// unsuffixed literals
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0
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1.0
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"S"
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b"B"
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r"R"
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r##"R"##
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br"BR"
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br##"BR"##
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'C'
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b'B'
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// suffixed literals
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0q
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1.0q
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"S"q
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b"B"q
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r"R"q
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r##"R"##q
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br"BR"q
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br##"BR"##q
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'C'q
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b'B'q
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}
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fn main() {}

‎src/test/ui/proc-macro/debug/dump-debug.stderr

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TokenStream [Ident { ident: "ident", span: #0 bytes(130..135) }, Ident { ident: "r#ident", span: #0 bytes(151..158) }, Punct { ch: ',', spacing: Alone, span: #0 bytes(176..177) }, Punct { ch: '=', spacing: Joint, span: #0 bytes(203..205) }, Punct { ch: '=', spacing: Joint, span: #0 bytes(203..205) }, Punct { ch: '>', spacing: Alone, span: #0 bytes(205..206) }, Group { delimiter: Parenthesis, stream: TokenStream [], span: #0 bytes(230..232) }, Group { delimiter: Bracket, stream: TokenStream [Ident { ident: "_", span: #0 bytes(258..259) }], span: #0 bytes(257..260) }, Literal { kind: Integer, symbol: "0", suffix: None, span: #0 bytes(315..316) }, Literal { kind: Float, symbol: "1.0", suffix: None, span: #0 bytes(321..324) }, Literal { kind: Str, symbol: "S", suffix: None, span: #0 bytes(329..332) }, Literal { kind: ByteStr, symbol: "B", suffix: None, span: #0 bytes(337..341) }, Literal { kind: StrRaw(0), symbol: "R", suffix: None, span: #0 bytes(346..350) }, Literal { kind: StrRaw(2), symbol: "R", suffix: None, span: #0 bytes(355..363) }, Literal { kind: ByteStrRaw(0), symbol: "BR", suffix: None, span: #0 bytes(368..374) }, Literal { kind: ByteStrRaw(2), symbol: "BR", suffix: None, span: #0 bytes(379..389) }, Literal { kind: Char, symbol: "C", suffix: None, span: #0 bytes(394..397) }, Literal { kind: Byte, symbol: "B", suffix: None, span: #0 bytes(402..406) }, Literal { kind: Integer, symbol: "0", suffix: Some("q"), span: #0 bytes(437..439) }, Literal { kind: Float, symbol: "1.0", suffix: Some("q"), span: #0 bytes(444..448) }, Literal { kind: Str, symbol: "S", suffix: Some("q"), span: #0 bytes(453..457) }, Literal { kind: ByteStr, symbol: "B", suffix: Some("q"), span: #0 bytes(462..467) }, Literal { kind: StrRaw(0), symbol: "R", suffix: Some("q"), span: #0 bytes(472..477) }, Literal { kind: StrRaw(2), symbol: "R", suffix: Some("q"), span: #0 bytes(482..491) }, Literal { kind: ByteStrRaw(0), symbol: "BR", suffix: Some("q"), span: #0 bytes(496..503) }, Literal { kind: ByteStrRaw(2), symbol: "BR", suffix: Some("q"), span: #0 bytes(508..519) }, Literal { kind: Char, symbol: "C", suffix: Some("q"), span: #0 bytes(524..528) }, Literal { kind: Byte, symbol: "B", suffix: Some("q"), span: #0 bytes(533..538) }]
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TokenStream [
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Ident {
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ident: "ident",
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span: #0 bytes(130..135),
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},
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Ident {
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ident: "r#ident",
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span: #0 bytes(151..158),
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},
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Punct {
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ch: ',',
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spacing: Alone,
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span: #0 bytes(176..177),
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},
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Punct {
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ch: '=',
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spacing: Joint,
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span: #0 bytes(203..205),
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},
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Punct {
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ch: '=',
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spacing: Joint,
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span: #0 bytes(203..205),
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},
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Punct {
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ch: '>',
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spacing: Alone,
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span: #0 bytes(205..206),
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},
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Group {
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delimiter: Parenthesis,
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stream: TokenStream [],
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span: #0 bytes(230..232),
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},
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Group {
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delimiter: Bracket,
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stream: TokenStream [
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Ident {
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ident: "_",
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span: #0 bytes(258..259),
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},
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],
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span: #0 bytes(257..260),
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},
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Literal {
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kind: Integer,
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symbol: "0",
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suffix: None,
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span: #0 bytes(315..316),
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},
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Literal {
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kind: Float,
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symbol: "1.0",
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suffix: None,
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span: #0 bytes(321..324),
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},
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Literal {
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kind: Str,
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symbol: "S",
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suffix: None,
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span: #0 bytes(329..332),
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},
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Literal {
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kind: ByteStr,
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symbol: "B",
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suffix: None,
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span: #0 bytes(337..341),
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},
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Literal {
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kind: StrRaw(0),
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symbol: "R",
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suffix: None,
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span: #0 bytes(346..350),
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},
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Literal {
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kind: StrRaw(2),
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symbol: "R",
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suffix: None,
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span: #0 bytes(355..363),
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},
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Literal {
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kind: ByteStrRaw(0),
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symbol: "BR",
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suffix: None,
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span: #0 bytes(368..374),
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},
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Literal {
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kind: ByteStrRaw(2),
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symbol: "BR",
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suffix: None,
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span: #0 bytes(379..389),
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},
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Literal {
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kind: Char,
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symbol: "C",
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suffix: None,
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span: #0 bytes(394..397),
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},
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Literal {
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kind: Byte,
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symbol: "B",
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suffix: None,
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span: #0 bytes(402..406),
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},
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Literal {
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kind: Integer,
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symbol: "0",
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suffix: Some("q"),
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span: #0 bytes(437..439),
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},
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Literal {
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kind: Float,
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symbol: "1.0",
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suffix: Some("q"),
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span: #0 bytes(444..448),
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},
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Literal {
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kind: Str,
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symbol: "S",
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suffix: Some("q"),
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span: #0 bytes(453..457),
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},
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Literal {
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kind: ByteStr,
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symbol: "B",
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suffix: Some("q"),
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span: #0 bytes(462..467),
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},
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Literal {
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kind: StrRaw(0),
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symbol: "R",
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suffix: Some("q"),
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span: #0 bytes(472..477),
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},
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Literal {
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kind: StrRaw(2),
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symbol: "R",
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suffix: Some("q"),
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span: #0 bytes(482..491),
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},
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Literal {
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kind: ByteStrRaw(0),
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symbol: "BR",
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suffix: Some("q"),
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span: #0 bytes(496..503),
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},
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Literal {
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kind: ByteStrRaw(2),
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symbol: "BR",
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suffix: Some("q"),
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span: #0 bytes(508..519),
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},
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Literal {
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kind: Char,
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symbol: "C",
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suffix: Some("q"),
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span: #0 bytes(524..528),
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},
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Literal {
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kind: Byte,
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symbol: "B",
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suffix: Some("q"),
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span: #0 bytes(533..538),
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},
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]

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