add positioning for enum value names

hover enum value + doc

prisma-fmt/src/hover.rs

@@ -107,6 +107,20 @@ fn hover(ctx: HoverContext<'_>) -> Option<Hover> {
                 None,
             ))
         }
+        SchemaPosition::Enum(enm_id, EnumPosition::Value(value_id, EnumValuePosition::Name(name))) => {
+            let value = ctx
+                .db
+                .walk((ctx.initiating_file_id, enm_id))
+                .value(value_id)
+                .ast_value();
+
+            Some(format_hover_content(
+                value.documentation().unwrap_or_default(),
+                "value",
+                name,
+                None,
+            ))
+        }
 
         // --- Block Field Types ---
         SchemaPosition::Model(model_id, ModelPosition::Field(field_id, FieldPosition::Type(name))) => {
@@ -189,7 +203,7 @@ fn format_hover_content(
         "model" | "enum" | "view" | "type" => {
             format!("```prisma\n{variant} {name} {{{field}}}\n```{fancy_line_break}{relation_kind}")
         }
-        "field" => format!("```prisma\n{name}\n```{fancy_line_break}"),
+        "field" | "value" => format!("```prisma\n{name}\n```{fancy_line_break}"),
         _ => "".to_owned(),
     };
     let full_signature = format!("{prisma_display}{documentation}");

prisma-fmt/tests/hover/scenarios/value_from_enum_value_name/result.json

@@ -0,0 +1,6 @@
+{
+  "contents": {
+    "kind": "markdown",
+    "value": "```prisma\nRedPanda\n```\n___\nRedpandas are super cute."
+  }
+}

prisma-fmt/tests/hover/scenarios/value_from_enum_value_name/schema.prisma

@@ -0,0 +1,15 @@
+generator js {
+    provider = "prisma-client-js"
+}
+
+datasource db {
+    provider = "mongodb"
+    url      = env("DATABASE_URL")
+}
+
+/// enum doc
+enum Pet {
+    /// Redpandas are super cute.
+    RedP<|>anda
+    Cat
+}

prisma-fmt/tests/hover/tests.rs

@@ -21,4 +21,5 @@ scenarios! {
     model_from_block_name
     model_from_view_type
     one_to_many_self_relation
+    value_from_enum_value_name
 }

psl/schema-ast/src/ast/find_at_position/enum.rs

@@ -79,7 +79,9 @@ pub enum EnumValuePosition<'ast> {
 
 impl<'ast> EnumValuePosition<'ast> {
     fn new(value: &'ast ast::EnumValue, position: usize) -> EnumValuePosition<'ast> {
-        if value.name.span().contains(position) {}
+        if value.name.span().contains(position) {
+            return EnumValuePosition::Name(value.name());
+        }
         for (attr_idx, attr) in value.attributes.iter().enumerate() {
             if attr.span().contains(position) {
                 // We can't go by Span::contains() because we also care about the empty space