Add test of proc_macro::TokenStream's Debug

3 files changed, 221 insertions, 0 deletions

diff --git a/src/test/ui/proc-macro/debug/auxiliary/macro-dump-debug.rs b/src/test/ui/proc-macro/debug/auxiliary/macro-dump-debug.rs
new file mode 100644
index 00000000000..56ad0612f74
--- /dev/null
+++ b/src/test/ui/proc-macro/debug/auxiliary/macro-dump-debug.rs
@@ -0,0 +1,15 @@
+// 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()
+}
diff --git a/src/test/ui/proc-macro/debug/dump-debug.rs b/src/test/ui/proc-macro/debug/dump-debug.rs
new file mode 100644
index 00000000000..0ed36b690f4
--- /dev/null
+++ b/src/test/ui/proc-macro/debug/dump-debug.rs
@@ -0,0 +1,40 @@
+// 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() {}
diff --git a/src/test/ui/proc-macro/debug/dump-debug.stderr b/src/test/ui/proc-macro/debug/dump-debug.stderr
new file mode 100644
index 00000000000..0aedefd4e60
--- /dev/null
+++ b/src/test/ui/proc-macro/debug/dump-debug.stderr
@@ -0,0 +1,166 @@
+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),
+    },
+]