Fix indentation when printing arguments (#312)

Author: sungam3r

src/Directory.Build.props

@@ -1,7 +1,7 @@
 <Project>
 
   <PropertyGroup>
-    <VersionPrefix>9.0.1-preview</VersionPrefix>
+    <VersionPrefix>9.0.2-preview</VersionPrefix>
     <LangVersion>latest</LangVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <NoWarn>$(NoWarn);CA1707</NoWarn>

src/GraphQLParser.Tests/Visitors/SDLPrinterFromParsedTextTests.cs

@@ -409,8 +409,8 @@ type Dog implements Animal
   #arguments comment
   #multilined
   (x: 10, y: {
-  #comment on object field
-  z: 1})
+    #comment on object field
+    z: 1})
 }")]
     [InlineData(33,
 @"{
@@ -519,8 +519,8 @@ extend enum Color
 }",
 @"type T {
   data(
-  #comment
-  rendered: Boolean): String
+    #comment
+    rendered: Boolean): String
 }", true)]
     [InlineData(40, """
 "This is a Foo object type"
@@ -654,6 +654,142 @@ query q(
 schema {
   query: Query
 }
+""")]
+    [InlineData(50,
+"""
+type Query {
+"Fetches an object given its ID."
+node(
+"ID of the object."
+id: ID!): Node
+"Lookup nodes by a list of IDs."
+nodes(
+"The list of node IDs."
+ids: [ID!]!): [Node]!
+"Search for workspaces associated with this account."
+desWorkspaces(where: DesWorkspaceFilterInput): [DesWorkspace!]!
+"Search a specific workspace by its unique identifier."
+desWorkspaceById(
+"The node identifier for a workspace." id: ID!): DesWorkspace
+}
+""",
+"""
+type Query {
+  "Fetches an object given its ID."
+  node(
+    "ID of the object."
+    id: ID!): Node
+  "Lookup nodes by a list of IDs."
+  nodes(
+    "The list of node IDs."
+    ids: [ID!]!): [Node]!
+  "Search for workspaces associated with this account."
+  desWorkspaces(where: DesWorkspaceFilterInput): [DesWorkspace!]!
+  "Search a specific workspace by its unique identifier."
+  desWorkspaceById(
+    "The node identifier for a workspace."
+    id: ID!): DesWorkspace
+}
+""")]
+    [InlineData(51,
+"""
+type Query {
+  user
+  # comment 1
+  (
+    # comment 2
+    id: ID!
+    name: Name!): Node
+}
+""",
+"""
+type Query {
+  user
+  # comment 1
+  (
+    # comment 2
+    id: ID!, name: Name!): Node
+}
+""")]
+    [InlineData(52,
+"""
+directive @my
+  # comment 1
+  (
+    # comment 2
+    arg: Boolean!) on FIELD
+""",
+"""
+directive @my
+  # comment 1
+  (
+    # comment 2
+    arg: Boolean!) on FIELD
+""")]
+    [InlineData(53,
+"""
+query Q {
+  field1(arg1: 1) {
+    field2(arg2: 2) {
+      field3(arg3: 3)
+    }
+  }
+}
+""",
+"""
+query Q {
+  field1(arg1: 1) {
+    field2(arg2: 2) {
+      field3(arg3: 3)
+    }
+  }
+}
+""")]
+    [InlineData(54,
+"""
+query Q {
+  field1
+  #comment
+  (
+    #comment
+    arg1: 1
+  ) {
+    field2
+    #comment
+    (
+      #comment
+      arg2: 2
+    ) {
+      field3
+      #comment
+      (
+        #comment
+        arg3: 3
+      )
+    }
+  }
+}
+""",
+"""
+query Q {
+  field1
+  #comment
+  (
+    #comment
+    arg1: 1) {
+    field2
+    #comment
+    (
+      #comment
+      arg2: 2) {
+      field3
+      #comment
+      (
+        #comment
+        arg3: 3)
+    }
+  }
+}
 """)]
     public async Task SDLPrinter_Should_Print_Document(
         int number,

src/GraphQLParser/Visitors/SDLPrinter.cs

@@ -721,7 +721,7 @@ protected override async ValueTask VisitArgumentAsync(GraphQLArgument argument,
     protected override async ValueTask VisitArgumentsDefinitionAsync(GraphQLArgumentsDefinition argumentsDefinition, TContext context)
     {
         await VisitAsync(argumentsDefinition.Comments, context).ConfigureAwait(false);
-        await context.WriteAsync("(").ConfigureAwait(false);
+        await VisitAsync(LiteralNode.Wrap("("), context).ConfigureAwait(false);
 
         foreach (var argumentDefinition in argumentsDefinition.Items)
             await VisitAsync(argumentDefinition, context).ConfigureAwait(false);
@@ -870,23 +870,26 @@ public override async ValueTask VisitAsync(ASTNode? node, TContext context)
 
         int prevLevel = context.IndentLevel;
 
-        if (
-            (
-            node is GraphQLInputValueDefinition ||
-            node is GraphQLFieldDefinition ||
-            node is GraphQLEnumValueDefinition ||
-            node is GraphQLRootOperationTypeDefinition ||
-            node is GraphQLDirectiveLocations && Options.EachDirectiveLocationOnNewLine ||
-            node is GraphQLUnionMemberTypes && Options.EachUnionMemberOnNewLine
-            ) && context.Parents.Count > 0
-          )
-            context.IndentLevel = 1; // fixed indentation of 1
-        else if (
-            node is GraphQLField ||
-            node is GraphQLFragmentSpread ||
-            node is GraphQLInlineFragment
-            )
-            ++context.IndentLevel; // nested indentation
+        if (context.Parents.Count > 0)
+        {
+            if (
+                node is GraphQLFieldDefinition ||
+                node is GraphQLEnumValueDefinition ||
+                node is GraphQLRootOperationTypeDefinition ||
+                node is GraphQLDirectiveLocations && Options.EachDirectiveLocationOnNewLine ||
+                node is GraphQLUnionMemberTypes && Options.EachUnionMemberOnNewLine ||
+                node is GraphQLArgumentsDefinition && node.Comments?.Count > 0
+              )
+                context.IndentLevel = 1; // fixed indentation of 1
+            else if (
+                node is GraphQLField ||
+                node is GraphQLFragmentSpread ||
+                node is GraphQLInlineFragment ||
+                node is GraphQLArgument ||
+                node is GraphQLInputValueDefinition
+                )
+                ++context.IndentLevel; // nested indentation
+        }
 
         context.Parents.Push(node);