PuzzleD

commit 9819f537d9685cc30da219c9ea202d9fb5ab5d8c
parent 0ec7a47e62a39511ce8710fbf920224344bd3098
Author: Dominik Schmidt <das1993@hotmail.com>
Date:   Thu, 27 Aug 2015 00:18:14 +0200

Change class Puzzle to struct.

I _really_ don't feel like heapallocating this structure.
As a consequence, new Puzzles have to be instanciated with Puzzle.get();

Diffstat:
puzzle.d
 | 
19
++++++++++++++++---

1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/puzzle.d b/puzzle.d
@@ -86,13 +86,26 @@ extern(C){
 }
 import std.string;
 
-class Puzzle{
+static bool valid(in PuzzleContext ctx){
+	return (ctx.magic==0xdeadbeef);
+}
+static bool valid(in PuzzleContext *ctx){
+	return (ctx!=null && valid(*ctx));
+}
+
+struct Puzzle{
 	PuzzleContext ctx;
-	this(){
+	void initialize()
+	out{
+		assert(ctx.valid());
+	}
+	body{
 		puzzle_init_context(&ctx);
 	}
 	~this(){
-		puzzle_free_context(&ctx);
+		if(ctx.valid){
+			puzzle_free_context(&ctx);
+		}
 	}
 	DVec dvec(){
 		return DVec(&ctx);