[Rust] scope support types in generics (#1820)

Author: keith-hall

Rust/Rust.sublime-syntax

@@ -10,6 +10,7 @@ variables:
   escaped_byte: '\\(x\h{2}|n|r|t|0|"|''|\\)'
   escaped_char: '\\(x\h{2}|n|r|t|0|"|''|\\|u\{\h{1,6}\})'
   int_suffixes: 'i8|i16|i32|i64|isize|u8|u16|u32|u64|usize'
+  support_type: \b(Copy|Send|Sized|Sync|Drop|Fn|FnMut|FnOnce|Box|ToOwned|Clone|PartialEq|PartialOrd|Eq|Ord|AsRef|AsMut|Into|From|Default|Iterator|Extend|IntoIterator|DoubleEndedIterator|ExactSizeIterator|Option|Some|None|Result|Ok|Err|SliceConcatExt|String|ToString|Vec)\b
 contexts:
   main:
     - include: statements
@@ -188,7 +189,7 @@ contexts:
     - match: '\b[[:lower:]_][[:lower:][:digit:]_]*!(?=\s*(\(|\{|\[))'
       scope: support.macro.rust
 
-    - match: \b(Copy|Send|Sized|Sync|Drop|Fn|FnMut|FnOnce|Box|ToOwned|Clone|PartialEq|PartialOrd|Eq|Ord|AsRef|AsMut|Into|From|Default|Iterator|Extend|IntoIterator|DoubleEndedIterator|ExactSizeIterator|Option|Some|None|Result|Ok|Err|SliceConcatExt|String|ToString|Vec)\b
+    - match: '{{support_type}}'
       scope: support.type.rust
 
     - include: basic-identifiers
@@ -427,7 +428,9 @@ contexts:
     - include: block
 
   type:
-    - match: '{{identifier}}(?=<)'
+    - match: (?:{{support_type}}|{{identifier}})(?=<)
+      captures:
+        1: support.type.rust
       push: generic-angles
     - match: \b(Self|i8|i16|i32|i64|isize|u8|u16|u32|u64|usize|f32|f64|bool|char|str)\b
       scope: storage.type.rust
@@ -484,6 +487,8 @@ contexts:
               pop: true
         - include: generic-angles-contents
     - include: type-any-identifier
+    - match: '{{support_type}}'
+      scope: support.type.rust
     - match: ':'
       scope: punctuation.separator.rust
     - match: '\+'

Rust/syntax_test_rust.rs

@@ -214,6 +214,7 @@ struct PrintableStruct(Box<i32>);
 //^^^^ storage.type.struct
 //     ^^^^^^^^^^^^^^^ entity.name.struct
 //                    ^ punctuation.section.group.begin
+//                     ^^^ support.type
 //                     ^^^^^^^^ meta.generic
 //                        ^ punctuation.definition.generic.begin
 //                         ^^^ storage.type
@@ -808,6 +809,7 @@ pub trait Animal {
 
 fn collect_vec() {
     let _: Vec<(usize, usize)> = (0..10).enumerate().collect::<Vec<_>>();
+//         ^^^ support.type
 //         ^^^^^^^^^^^^^^^^^^^ meta.generic
 //             ^ punctuation.section.group.begin
 //              ^^^^^ storage.type
@@ -825,6 +827,7 @@ fn collect_vec() {
 //                                                  ^ punctuation.accessor.dot
 //                                                          ^^ punctuation.accessor
 //                                                            ^^^^^^^^ meta.generic
+//                                                             ^^^ support.type
 //                                                             ^^^^^^ meta.generic meta.generic
 //                                                                 ^ keyword.operator
     let _: Vec<(usize, usize)> = vec!();
@@ -833,6 +836,8 @@ fn collect_vec() {
 //                               ^^^^ support.macro
     let _: Vec<(usize, usize)> = vec![];
 //                               ^^^^ support.macro
+    let _: Vec<String> = vec![];
+//             ^^^^^^ meta.generic support.type
 }
 
 macro_rules! forward_ref_binop [