feat: use pkg-config to discover well known types and hover on imports (

#53)

A step closer...

Cargo.toml

@@ -27,6 +27,7 @@ hard-xml = "1.36.0"
 tempfile = "3.12.0"
 serde = { version = "1.0.209", features = ["derive"] }
 basic-toml = "0.1.9"
+pkg-config = "0.3.31"
 
 [dev-dependencies]
 insta = { version = "1.39.0", features = ["yaml"] }

README.md

@@ -12,7 +12,7 @@
 ## ✨ Features
 
 - ✅ **Code Completion**: Auto-complete messages, enums, and keywords in your `.proto` files.
-- ✅ **Diagnostics**: Syntax errors detected with the tree-sitter parser.
+- ✅ **Diagnostics**: Syntax errors and import error detected with the tree-sitter parser.
 - ✅ **Document Symbols**: Navigate and view all symbols, including messages and enums.
 - ✅ **Code Formatting**: Format `.proto` files using `clang-format` for a consistent style.
 - ✅ **Go to Definition**: Jump to the definition of symbols like messages or enums.
@@ -138,7 +138,7 @@ Jump directly to the definition of any custom symbol, including those in other f
 
 ### Hover Information
 
-Hover over any symbol to get detailed documentation and comments associated with it. This works seamlessly across different packages and namespaces.
+Hover over any symbol or imports to get detailed documentation and comments associated with it. This works seamlessly across different packages and namespaces.
 
 ### Rename Symbols
 

protols.toml

@@ -1,2 +1,2 @@
 [config]
-include_paths = ["sample", "src/workspace/input"]
+include_paths = ["src/workspace/input"]

sample/everything.proto

@@ -0,0 +1,64 @@
+syntax = "proto3";
+
+// Import Google's Well-Known Types
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/duration.proto";
+import "google/protobuf/empty.proto";
+import "google/protobuf/struct.proto";
+import "google/protobuf/any.proto";
+
+package example;
+
+// Enum example
+enum Status {
+  UNKNOWN = 0;
+  ACTIVE = 1;
+  INACTIVE = 2;
+}
+
+// Nested message example
+message Address {
+  string street = 1;
+  string city = 2;
+  string state = 3;
+  string zip_code = 4;
+}
+
+// Main message example
+message Person {
+  // Scalar types
+  string name = 1;
+  int32 age = 2;
+  bool is_verified = 3;
+
+  // Repeated field (array)
+  repeated string phone_numbers = 4;
+
+  // Map example
+  map<string, string> attributes = 5;
+
+  // Enum field
+  Status status = 6;
+
+  // Nested message
+  Address address = 7;
+
+  // Oneof example
+  oneof contact_method {
+    string email = 8;
+    string phone = 9;
+  }
+
+  // Google Well-Known Types
+  google.protobuf.Timestamp last_updated = 10;
+  google.protobuf.Duration session_duration = 11;
+  google.protobuf.Empty metadata = 12;
+  google.protobuf.Struct extra_data = 13;
+  google.protobuf.Any any_data = 14;
+}
+
+// Service example
+service PersonService {
+  rpc GetPerson(google.protobuf.Empty) returns (Person);
+  rpc UpdatePerson(Person) returns (google.protobuf.Empty);
+}