[vala] vapigen: Support overriding memory management functions in metadata

[Jürg Billeter <juergbi src gnome org>]

commit cbf015fc3fce478a794c1c2542633c11328c60f7
Author: Evan Nemerson <evan coeus-group com>
Date:   Tue Jul 21 17:06:06 2009 -0700

    vapigen: Support overriding memory management functions in metadata
    
    Fixes bug 589307.

 vapigen/valagidlparser.vala |   32 ++++++++++++++++++++++----------
 1 files changed, 22 insertions(+), 10 deletions(-)
---
diff --git a/vapigen/valagidlparser.vala b/vapigen/valagidlparser.vala
index b4426ea..70a2019 100644
--- a/vapigen/valagidlparser.vala
+++ b/vapigen/valagidlparser.vala
@@ -462,6 +462,12 @@ public class Vala.GIdlParser : CodeVisitor {
 
 			current_data_type = null;
 		} else {
+			bool ref_function_void = false;
+			string ref_function = null;
+			string unref_function = null;
+			string copy_function = null;
+			string free_function = null;
+
 			var cl = ns.scope.lookup (name) as Class;
 			if (cl == null) {
 				string base_class = null;
@@ -494,6 +500,18 @@ public class Vala.GIdlParser : CodeVisitor {
 							if (eval (nv[1]) == "1") {
 								cl.is_abstract = true;
 							}
+						} else if (nv[0] == "free_function") {
+							free_function = eval (nv[1]);
+						} else if (nv[0] == "ref_function") {
+							ref_function = eval (nv[1]);
+						} else if (nv[0] == "unref_function") {
+							unref_function = eval (nv[1]);
+						} else if (nv[0] == "copy_function") {
+							copy_function = eval (nv[1]);
+						} else if (nv[0] == "ref_function_void") {
+							if (eval (nv[1]) == "1") {
+								ref_function_void = true;
+							}
 						}
 					}
 				}
@@ -509,23 +527,17 @@ public class Vala.GIdlParser : CodeVisitor {
 
 			current_data_type = cl;
 
-			bool ref_function_void = false;
-			string ref_function = null;
-			string unref_function = null;
-			string copy_function = null;
-			string free_function = null;
-
 			foreach (weak IdlNode member in st_node.members) {
 				if (member.type == IdlNodeTypeId.FUNCTION) {
-					if (member.name == "ref") {
+					if ((ref_function == null) && (member.name == "ref")) {
 						ref_function = ((IdlNodeFunction) member).symbol;
 						ref_function_void = (parse_type (((IdlNodeFunction) member).result.type) is VoidType);
-					} else if (member.name == "unref") {
+					} else if ((unref_function == null) && (member.name == "unref")) {
 						unref_function = ((IdlNodeFunction) member).symbol;
-					} else if (member.name == "free" || member.name == "destroy") {
+					} else if ((free_function == null) && (member.name == "free" || member.name == "destroy")) {
 						free_function = ((IdlNodeFunction) member).symbol;
 					} else {
-						if (member.name == "copy") {
+						if ((copy_function == null) && (member.name == "copy")) {
 							copy_function = ((IdlNodeFunction) member).symbol;
 						}
 						var m = parse_function ((IdlNodeFunction) member);