[vala/wip/transform: 38/107] Cache wrapper methods

[Rico Tzschichholz <ricotz src gnome org>]

commit 7d5ff9a4c31508aa6d822acae5f2ff4625dbcb23
Author: Luca Bruno <lucabru src gnome org>
Date:   Tue Jan 3 11:29:04 2012 +0100

    Cache wrapper methods

 codegen/valagvarianttransformer.vala | 44 +++++++++++++++++++++++++-----------
 1 file changed, 31 insertions(+), 13 deletions(-)
---
diff --git a/codegen/valagvarianttransformer.vala b/codegen/valagvarianttransformer.vala
index 80bb8126a..5924748d2 100644
--- a/codegen/valagvarianttransformer.vala
+++ b/codegen/valagvarianttransformer.vala
@@ -46,6 +46,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
        };
 
        CodeBuilder b;
+       HashMap<string, CodeNode> wrapper_cache = new HashMap<string, CodeNode> (str_hash, str_equal);
 
        bool get_basic_type_info (string signature, out BasicTypeInfo basic_type) {
                if (signature != null) {
@@ -157,28 +158,45 @@ public class Vala.GVariantTransformer : CodeTransformer {
                return ret;
        }
 
-       Method wrapper_method (DataType return_type) {
+       bool get_cached_wrapper (string key, out CodeNode node) {
+               node = wrapper_cache.get (key);
+               return node != null;
+       }
+
+       void add_cached_wrapper (string key, CodeNode node) {
+               wrapper_cache.set (key, node);
+       }
+
+       bool wrapper_method (DataType return_type, string cache_key, out Method m) {
+               CodeNode n;
+               if (get_cached_wrapper (cache_key, out n)) {
+                       m = (Method) n;
+                       return true;
+               }
                var name = CodeNode.get_temp_name ().replace (".", "");
                name = "_vala_func_"+name;
-               var m = new Method (name, return_type, b.source_reference);
+               m = new Method (name, return_type, b.source_reference);
                context.root.add_method (m);
                m.access = SymbolAccessibility.PRIVATE;
-               return m;
+               add_cached_wrapper (cache_key, m);
+               return false;
        }
 
        Expression serialize_array (ArrayType array_type, Expression array_expr) {
-               var m = wrapper_method (data_type ("GLib.Variant", true));
-               m.add_parameter (new Parameter ("array", copy_type (array_type, false), b.source_reference));
-               b.push_method (m);
+               Method m;
+               if (!wrapper_method (data_type ("GLib.Variant", true), "gvariant_serialize_array 
"+array_type.to_string(), out m)) {
+                       m.add_parameter (new Parameter ("array", copy_type (array_type, false), 
b.source_reference));
+                       b.push_method (m);
+
+                       string[] indices = new string[array_type.rank];
+                       for (int dim=1; dim <= array_type.rank; dim++) {
+                               indices[dim-1] = b.add_temp_declaration (null, new IntegerLiteral ("0"));
+                       }
+                       b.add_return (serialize_array_dim (array_type, 1, indices, "array"));
 
-               string[] indices = new string[array_type.rank];
-               for (int dim=1; dim <= array_type.rank; dim++) {
-                       indices[dim-1] = b.add_temp_declaration (null, new IntegerLiteral ("0"));
+                       b.pop_method ();
+                       check (m);
                }
-               b.add_return (serialize_array_dim (array_type, 1, indices, "array"));
-
-               b.pop_method ();
-               check (m);
                var call = (MethodCall) expression (m.name+"()");
                call.add_argument (array_expr);
                return call;