Merge pull request #3137 from laytan/show-defineable

Add flags to show/export defineable values and warn if a -define is unused in the project

src/checker.hpp

@@ -382,6 +382,17 @@ struct GenTypesData {
 	RecursiveMutex  mutex;
 };
 
+struct Defineable {
+	String        name;
+	ExactValue    default_value;
+	TokenPos      pos;
+	CommentGroup *docs;
+
+	// These strings are only computed from previous fields when defineables are being shown or exported.
+	String default_value_str;
+	String pos_str;
+};
+
 // CheckerInfo stores all the symbol information for a type-checked program
 struct CheckerInfo {
 	Checker *checker;
@@ -408,6 +419,9 @@ struct CheckerInfo {
 	Array<Entity *> entities;
 	Array<Entity *> required_foreign_imports_through_force;
 
+	BlockingMutex     defineables_mutex;
+	Array<Defineable> defineables;
+
 
 	// Below are accessed within procedures
 	RwMutex            global_untyped_mutex;