Initial Inlay Hint Support (#176)

include/Feature/InlayHint.h

@@ -5,20 +5,39 @@
 #include "Index/Shared.h"
 #include "Support/JSON.h"
 
+namespace clice::config {
+
+struct InlayHintsOptions {
+    /// If false, inlay hints are completely disabled.
+    bool enabled = true;
+
+    // Whether specific categories of hints are enabled.
+    bool parameters = true;
+    bool deduced_types = true;
+    bool designators = true;
+    bool block_end = false;
+    bool default_arguments = false;
+
+    // Limit the length of type names in inlay hints. (0 means no limit)
+    uint32_t type_name_limit = 32;
+};
+
+}  // namespace clice::config
+
 namespace clice::feature {
 
-struct InlayHintKind : refl::Enum<InlayHintKind, false, std::uint8_t> {
-    enum Kind {
-        Params,
-        InvalidEnum,
-    };
-
-    using Enum::Enum;
+enum class InlayHintKind {
+    Parameter,
+    InvalidEnum,
+    DefaultArgument,
+    Type,
+    Designator,
+    BlockEnd,
 };
 
 struct InlayHint {
     /// The position offset of the inlay hint in the source code.
-    uint32_t offset;
+    std::uint32_t offset;
 
     /// The kind/category of the inlay hint.
     InlayHintKind kind;
@@ -33,8 +52,6 @@ struct InlayHint {
 
 using InlayHints = std::vector<InlayHint>;
 
-InlayHints inlayHints(CompilationUnit& unit, LocalSourceRange target);
-
-index::Shared<InlayHints> indexInlayHint(CompilationUnit& unit);
+InlayHints inlay_hints(CompilationUnit& unit, LocalSourceRange target);
 
 }  // namespace clice::feature