Analyzer adds a "this" pointer to methods

analyzer/method.go

@@ -50,6 +50,20 @@ func (this *Tree) analyzeMethod (
 		this.analyzeType(method.Signature.Return, false)
 	if err != nil { return method, err }
 
+	// add owner to method
+	this.addVariable(&entity.Declaration {
+		Pos:  method.Pos,
+		Name: "this",
+		Ty:   &entity.TypePointer {
+			Pos:        method.Pos,
+			Referenced: &entity.TypeNamed {
+				Pos:  method.Pos,
+				Name: typeName,
+				Type: owner.Type,
+			},
+		},
+	})
+
 	// add incomplete method to complete methods because there is enough
 	// information for it to be complete from the point of view of other
 	// parts of the code

analyzer/method_test.go

@@ -41,3 +41,15 @@ Bird: Int
 Bird.[main x:Int y:U8 z:Int] = { }
 `)
 }
+
+func TestMethodThis (test *testing.T) {
+testString (test,
+`
+Number: Int
+Number.[add x:Number]:Number = [++[.this] x]
+StringHolder: (string:String)
+StringHolder.[setString string:String] = {
+	this.string = string
+}
+`)
+}