[vala/wip/transform: 209/273] Add ConditionalExpression.replace_expression plus other fixes

[Luca Bruno <lucabru src gnome org>]

commit ce839e5ed7a67c60b4e25a46a94678cf90168933
Author: Luca Bruno <lucabru src gnome org>
Date:   Thu Dec 29 12:39:15 2011 +0100

    Add ConditionalExpression.replace_expression plus other fixes

 codegen/valagvarianttransformer.vala |    2 ++
 vala/valacodetransformer.vala        |    6 ++++++
 vala/valaconditionalexpression.vala  |   18 ++++++++++++++----
 3 files changed, 22 insertions(+), 4 deletions(-)
---
diff --git a/codegen/valagvarianttransformer.vala b/codegen/valagvarianttransformer.vala
index 3ead018..a0be0e8 100644
--- a/codegen/valagvarianttransformer.vala
+++ b/codegen/valagvarianttransformer.vala
@@ -244,6 +244,8 @@ public class Vala.GVariantTransformer : CodeTransformer {
        }
 
        public override void visit_expression (Expression expr) {
+               base.visit_expression (expr);
+
                if (!(context.profile == Profile.GOBJECT && expr.target_type != null && 
expr.target_type.data_type == context.analyzer.gvariant_type.data_type && !(expr.value_type is NullType) && 
expr.value_type.data_type != context.analyzer.gvariant_type.data_type)) {
                        // no implicit gvariant boxing
                        return;
diff --git a/vala/valacodetransformer.vala b/vala/valacodetransformer.vala
index 9eefee8..8583c10 100644
--- a/vala/valacodetransformer.vala
+++ b/vala/valacodetransformer.vala
@@ -200,6 +200,7 @@ public class Vala.CodeTransformer : CodeVisitor {
                var loop = new Loop (stmt.body, stmt.source_reference);
 
                var parent_block = (Block) stmt.parent_node;
+               context.analyzer.replaced_nodes.add (stmt);
                parent_block.replace_statement (stmt, loop);
 
                stmt.body.checked = false;
@@ -214,6 +215,7 @@ public class Vala.CodeTransformer : CodeVisitor {
                        var loop = new Loop (stmt.body, stmt.source_reference);
 
                        var parent_block = (Block) stmt.parent_node;
+                       context.analyzer.replaced_nodes.add (stmt);
                        parent_block.replace_statement (stmt, loop);
 
                        check (loop);
@@ -241,6 +243,7 @@ public class Vala.CodeTransformer : CodeVisitor {
                block.add_statement (new Loop (stmt.body, stmt.source_reference));
 
                var parent_block = (Block) stmt.parent_node;
+               context.analyzer.replaced_nodes.add (stmt);
                parent_block.replace_statement (stmt, block);
 
                stmt.body.checked = false;
@@ -287,6 +290,7 @@ public class Vala.CodeTransformer : CodeVisitor {
                block.add_statement (new Loop (stmt.body, stmt.source_reference));
 
                var parent_block = (Block) stmt.parent_node;
+               context.analyzer.replaced_nodes.add (stmt);
                parent_block.replace_statement (stmt, block);
 
                stmt.body.checked = false;
@@ -370,6 +374,7 @@ public class Vala.CodeTransformer : CodeVisitor {
                                block.remove_local_variable (local);
                                context.analyzer.get_insert_block (expr).add_local_variable (local);
 
+                               context.analyzer.replaced_nodes.add (expr);
                                old_parent_node.replace_expression (expr, temp_access);
                                check (temp_access);
                        }
@@ -400,6 +405,7 @@ public class Vala.CodeTransformer : CodeVisitor {
                ma.formal_target_type = expr.formal_target_type;
                ma.target_type = expr.target_type;
 
+               context.analyzer.replaced_nodes.add (expr);
                expr.parent_node.replace_expression (expr, ma);
                check (ma);
        }
diff --git a/vala/valaconditionalexpression.vala b/vala/valaconditionalexpression.vala
index 7ea39e4..486ecbd 100644
--- a/vala/valaconditionalexpression.vala
+++ b/vala/valaconditionalexpression.vala
@@ -85,11 +85,9 @@ public class Vala.ConditionalExpression : Expression {
        }
        
        public override void accept (CodeVisitor visitor) {
-               // FIXME: temporary workaround to keep alive the object
-               var self = this;
-               visitor.visit_conditional_expression (self);
+               visitor.visit_conditional_expression (this);
 
-               visitor.visit_expression (self);
+               visitor.visit_expression (this);
        }
 
        public override void accept_children (CodeVisitor visitor) {
@@ -114,6 +112,18 @@ public class Vala.ConditionalExpression : Expression {
                false_expression.get_used_variables (collection);
        }
 
+       public override void replace_expression (Expression old_node, Expression new_node) {
+               if (condition == old_node) {
+                       condition = new_node;
+               }
+               if (true_expression == old_node) {
+                       true_expression = new_node;
+               }
+               if (false_expression == old_node) {
+                       false_expression = new_node;
+               }
+       }
+
        public override bool check (CodeContext context) {
                if (checked) {
                        return !error;