Support params and attributes for script file

PowerShell.sublime-syntax

@@ -25,7 +25,7 @@ contexts:
   main:
     - meta_include_prototype: false
     - match: ''
-      push: [statements, imports, shebang]
+      push: [statements, script-param-block, imports, shebang]
 
   shebang:
     - meta_include_prototype: false
@@ -46,6 +46,11 @@ contexts:
     - include: using-directives
     - include: else-pop
 
+  script-param-block:
+    - include: attributes
+    - include: param-block
+    - include: else-pop
+
   statements:
     - include: classes
     - include: functions
@@ -591,21 +596,21 @@ contexts:
   attributes:
     - match: (\[)\s*(ValidatePattern)
       captures:
-        1: punctuation.section.brackets.begin.powershell
-        2: support.function.attribute.powershell
+        1: punctuation.definition.annotation.begin.powershell
+        2: variable.annotation.powershell
       push: inside-attribute
       with_prototype:
         - include: regex-strings
     - match: (\[)\s*({{attributes}})
       captures:
-        1: punctuation.section.brackets.begin.powershell
-        2: support.function.attribute.powershell
+        1: punctuation.definition.annotation.begin.powershell
+        2: variable.annotation.powershell
       push: inside-attribute
 
   inside-attribute:
-    - meta_scope: meta.attribute.powershell
+    - meta_scope: meta.annotation.powershell
     - match: \]
-      scope: punctuation.section.brackets.end.powershell
+      scope: punctuation.definition.annotation.end.powershell
       pop: 1
     - match: \(
       scope: punctuation.section.group.begin.powershell

tests/syntax_test_Class.ps1

@@ -31,10 +31,10 @@ class TypeName
     # <- punctuation.definition.comment
     # ^^^^^^^^^^^^^^^^^^^^^^^^^^ comment.line
     [ValidateSet("val1", "Val2")]
-#^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.class.powershell
-#   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.attribute.powershell
-#   ^ punctuation.section.brackets.begin.powershell
-#    ^^^^^^^^^^^ support.function.attribute.powershell
+#^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.class.powershell
+#   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.annotation.powershell
+#   ^ punctuation.definition.annotation.begin.powershell
+#    ^^^^^^^^^^^ variable.annotation.powershell
 #               ^ punctuation.section.group.begin.powershell
 #                ^^^^^^ meta.string.interpolated.powershell string.quoted.double.powershell
 #                ^ punctuation.definition.string.begin.powershell
@@ -44,7 +44,7 @@ class TypeName
 #                        ^ punctuation.definition.string.begin.powershell
 #                             ^ punctuation.definition.string.end.powershell
 #                              ^ punctuation.section.group.end.powershell
-#                               ^ punctuation.section.brackets.end.powershell
+#                               ^ punctuation.definition.annotation.end.powershell
     [string] $P1
 #^^^^^^^^^^^^^^^ meta.class.powershell
 #   ^ punctuation.section.brackets.begin.powershell