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Add test of proc_macro::TokenStream's Debug
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@dtolnay
dtolnay committed May 15, 2020
1 parent 45ee336 commit 4c4b4c4
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15 changes: 15 additions & 0 deletions src/test/ui/proc-macro/debug/auxiliary/macro-dump-debug.rs
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// force-host
// no-prefer-dynamic

#![crate_type = "proc-macro"]
#![crate_name = "macro_dump_debug"]

extern crate proc_macro;
use proc_macro::TokenStream;

#[proc_macro]
pub fn dump_debug(tokens: TokenStream) -> TokenStream {
eprintln!("{:?}", tokens);
eprintln!("{:#?}", tokens);
TokenStream::new()
}
40 changes: 40 additions & 0 deletions src/test/ui/proc-macro/debug/dump-debug.rs
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// run-pass
// aux-build:macro-dump-debug.rs

extern crate macro_dump_debug;
use macro_dump_debug::dump_debug;

dump_debug! {
ident // ident
r#ident // raw ident
, // alone punct
==> // joint punct
() // empty group
[_] // nonempty group

// unsuffixed literals
0
1.0
"S"
b"B"
r"R"
r##"R"##
br"BR"
br##"BR"##
'C'
b'B'

// suffixed literals
0q
1.0q
"S"q
b"B"q
r"R"q
r##"R"##q
br"BR"q
br##"BR"##q
'C'q
b'B'q
}

fn main() {}
166 changes: 166 additions & 0 deletions 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) }]
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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