Improve the Smithy metadata matcher.

Previously, metadata foo bar baz = 23 was accepted, but according to
the definition https://smithy.io/2.0/spec/idl.html#grammar-token-smithy-MetadataSection
it should be "metadata"<whitespace>Identifier/String<optional whitespace>.

2 files changed, 64 insertions, 0 deletions

diff --git a/tests/examplefiles/smithy/test.smithy b/tests/examplefiles/smithy/test.smithy
index 3d20f064..9317fee9 100644
--- a/tests/examplefiles/smithy/test.smithy
+++ b/tests/examplefiles/smithy/test.smithy
@@ -2,6 +2,18 @@ $version: "1.0"
 
 namespace test
 
+metadata "foo" = ["bar", "baz"]
+metadata validators = [
+    {
+        name: "ValidatorName"
+        id: "ValidatorId"
+        message: "Some string"
+        configuration: {
+            selector: "operation"
+        }
+    }
+]
+
 /// Define how an HTTP request is serialized given a specific protocol,
 /// authentication scheme, and set of input parameters.
 @trait(selector: "operation")
diff --git a/tests/examplefiles/smithy/test.smithy.output b/tests/examplefiles/smithy/test.smithy.output
index 1f224897..db44a381 100644
--- a/tests/examplefiles/smithy/test.smithy.output
+++ b/tests/examplefiles/smithy/test.smithy.output
@@ -7,6 +7,58 @@
 ' test'       Name.Class
 '\n\n'        Text.Whitespace
 
+'metadata'    Keyword.Declaration
+' '           Text.Whitespace
+'"foo"'       Name.Class
+' '           Text.Whitespace
+'='           Name.Decorator
+' '           Text.Whitespace
+'['           Text
+'"bar"'       Literal.String.Double
+','           Punctuation
+' '           Text.Whitespace
+'"baz"'       Literal.String.Double
+']'           Text
+'\n'          Text.Whitespace
+
+'metadata'    Keyword.Declaration
+' '           Text.Whitespace
+'validators'  Name.Class
+' '           Text.Whitespace
+'='           Name.Decorator
+' '           Text.Whitespace
+'['           Text
+'\n    '      Text.Whitespace
+'{'           Text
+'\n        '  Text.Whitespace
+'name:'       Name.Label
+' '           Text.Whitespace
+'"ValidatorName"' Literal.String.Double
+'\n        '  Text.Whitespace
+'id:'         Name.Label
+' '           Text.Whitespace
+'"ValidatorId"' Literal.String.Double
+'\n        '  Text.Whitespace
+'message:'    Name.Label
+' '           Text.Whitespace
+'"Some string"' Literal.String.Double
+'\n        '  Text.Whitespace
+'configuration:' Name.Label
+' '           Text.Whitespace
+'{'           Text
+'\n            ' Text.Whitespace
+'selector:'   Name.Label
+' '           Text.Whitespace
+'"operation"' Literal.String.Double
+'\n        '  Text.Whitespace
+'}'           Text
+'\n    '      Text.Whitespace
+'}'           Text
+'\n'          Text.Whitespace
+
+']'           Text
+'\n\n'        Text.Whitespace
+
 '/// Define how an HTTP request is serialized given a specific protocol,' Comment.Multiline
 '\n'          Text.Whitespace