Upgrade rust/crates/paste-impl to 0.1.14 am: dfc35a2c85

Change-Id: Ic3fd1a9e5d68dafa6317c6290b8309dfe955a833

5 files changed, 49 insertions, 23 deletions

diff --git a/.cargo_vcs_info.json b/.cargo_vcs_info.json
index 326754d..1347e27 100644
--- a/.cargo_vcs_info.json
+++ b/.cargo_vcs_info.json
@@ -1,5 +1,5 @@
 {
   "git": {
-    "sha1": "ff47f2f0bbba62fcb2f892f5c488265b3bd7156f"
+    "sha1": "157559c3faf524ae24f8329537d2a763f6e18931"
   }
 }
diff --git a/Cargo.toml b/Cargo.toml
index 5b7eaad..97a4cab 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@
 [package]
 edition = "2018"
 name = "paste-impl"
-version = "0.1.12"
+version = "0.1.14"
 authors = ["David Tolnay <dtolnay@gmail.com>"]
 description = "Implementation detail of the `paste` crate"
 license = "MIT OR Apache-2.0"
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
index 057e084..80d2071 100644
--- a/Cargo.toml.orig
+++ b/Cargo.toml.orig
@@ -1,6 +1,6 @@
 [package]
 name = "paste-impl"
-version = "0.1.12"
+version = "0.1.14"
 authors = ["David Tolnay <dtolnay@gmail.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
diff --git a/METADATA b/METADATA
index b2cbadf..2b0d5de 100644
--- a/METADATA
+++ b/METADATA
@@ -9,11 +9,11 @@ third_party {
     type: GIT
     value: "https://github.com/dtolnay/paste"
   }
-  version: "0.1.12"
+  version: "0.1.14"
   license_type: NOTICE
   last_upgrade_date {
     year: 2020
     month: 5
-    day: 4
+    day: 25
   }
 }
diff --git a/src/lib.rs b/src/lib.rs
index dce8bb0..1c762d9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -40,31 +40,57 @@ struct PasteInput {
 
 impl Parse for PasteInput {
     fn parse(input: ParseStream) -> Result<Self> {
-        let mut expanded = TokenStream::new();
-        while !input.is_empty() {
-            match input.parse()? {
-                TokenTree::Group(group) => {
-                    let delimiter = group.delimiter();
-                    let content = group.stream();
-                    let span = group.span();
-                    if delimiter == Delimiter::Bracket && is_paste_operation(&content) {
-                        let segments = parse_bracket_as_segments.parse2(content)?;
-                        let pasted = paste_segments(span, &segments)?;
-                        pasted.to_tokens(&mut expanded);
-                    } else if is_none_delimited_single_ident_or_lifetime(delimiter, &content) {
-                        content.to_tokens(&mut expanded);
-                    } else {
-                        let nested = PasteInput::parse.parse2(content)?;
-                        let mut group = Group::new(delimiter, nested.expanded);
+        let mut contains_paste = false;
+        let expanded = parse(input, &mut contains_paste)?;
+        Ok(PasteInput { expanded })
+    }
+}
+
+fn parse(input: ParseStream, contains_paste: &mut bool) -> Result<TokenStream> {
+    let mut expanded = TokenStream::new();
+    let (mut prev_colons, mut colons) = (false, false);
+    while !input.is_empty() {
+        let save = input.fork();
+        match input.parse()? {
+            TokenTree::Group(group) => {
+                let delimiter = group.delimiter();
+                let content = group.stream();
+                let span = group.span();
+                let in_path = prev_colons || input.peek(Token![::]);
+                if delimiter == Delimiter::Bracket && is_paste_operation(&content) {
+                    let segments = parse_bracket_as_segments.parse2(content)?;
+                    let pasted = paste_segments(span, &segments)?;
+                    pasted.to_tokens(&mut expanded);
+                    *contains_paste = true;
+                } else if is_none_delimited_single_ident_or_lifetime(delimiter, &content) {
+                    content.to_tokens(&mut expanded);
+                    *contains_paste |= in_path;
+                } else {
+                    let mut group_contains_paste = false;
+                    let nested = (|input: ParseStream| parse(input, &mut group_contains_paste))
+                        .parse2(content)?;
+                    let group = if group_contains_paste {
+                        let mut group = Group::new(delimiter, nested);
                         group.set_span(span);
+                        *contains_paste = true;
+                        group
+                    } else {
+                        group.clone()
+                    };
+                    if in_path && delimiter == Delimiter::None {
+                        group.stream().to_tokens(&mut expanded);
+                        *contains_paste = true;
+                    } else {
                         group.to_tokens(&mut expanded);
                     }
                 }
-                other => other.to_tokens(&mut expanded),
             }
+            other => other.to_tokens(&mut expanded),
         }
-        Ok(PasteInput { expanded })
+        prev_colons = colons;
+        colons = save.peek(Token![::]);
     }
+    Ok(expanded)
 }
 
 fn is_paste_operation(input: &TokenStream) -> bool {