[vala] codegen: Add CodeGenerator.create_local method

[Jürg Billeter <juergbi src gnome org>]

commit 7d8bc26ecd8ce492e6ccd50529ab132d550db88b
Author: Jürg Billeter <j bitron ch>
Date:   Thu Oct 21 12:46:43 2010 +0200

    codegen: Add CodeGenerator.create_local method

 codegen/valaccodebasemodule.vala |    6 ++++++
 codegen/valadovabasemodule.vala  |    6 ++++++
 vala/valacodecontext.vala        |    2 +-
 vala/valacodegenerator.vala      |    4 +++-
 4 files changed, 16 insertions(+), 2 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 4f4effa..427def8 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -2272,6 +2272,12 @@ public class Vala.CCodeBaseModule : CodeGenerator {
 		}
 	}
 
+	public override LocalVariable create_local (DataType type) {
+		var result = get_temp_variable (type, type.value_owned);
+		emit_temp_var (result);
+		return result;
+	}
+
 	public LocalVariable get_temp_variable (DataType type, bool value_owned = true, CodeNode? node_reference = null, bool init = true) {
 		var var_type = type.copy ();
 		var_type.value_owned = value_owned;
diff --git a/codegen/valadovabasemodule.vala b/codegen/valadovabasemodule.vala
index 0ae752e..ae7bea0 100644
--- a/codegen/valadovabasemodule.vala
+++ b/codegen/valadovabasemodule.vala
@@ -927,6 +927,12 @@ public class Vala.DovaBaseModule : CodeGenerator {
 		}
 	}
 
+	public override LocalVariable create_local (DataType type) {
+		var result = get_temp_variable (type, type.value_owned);
+		emit_temp_var (result);
+		return result;
+	}
+
 	public LocalVariable get_temp_variable (DataType type, bool value_owned = true, CodeNode? node_reference = null) {
 		var var_type = type.copy ();
 		var_type.value_owned = value_owned;
diff --git a/vala/valacodecontext.vala b/vala/valacodecontext.vala
index 988a864..5d3b022 100644
--- a/vala/valacodecontext.vala
+++ b/vala/valacodecontext.vala
@@ -203,7 +203,7 @@ public class Vala.CodeContext {
 	/**
 	 * The selected code generator.
 	 */
-	public CodeGenerator codegen { get; set; default = new CodeGenerator (); }
+	public CodeGenerator codegen { get; set; }
 
 	public CodeContext () {
 	}
diff --git a/vala/valacodegenerator.vala b/vala/valacodegenerator.vala
index 39442ab..08713bc 100644
--- a/vala/valacodegenerator.vala
+++ b/vala/valacodegenerator.vala
@@ -23,7 +23,7 @@
 /**
  * Abstract code visitor generating code.
  */
-public class Vala.CodeGenerator : CodeVisitor {
+public abstract class Vala.CodeGenerator : CodeVisitor {
 	/**
 	 * Generate and emit C code for the specified code context.
 	 *
@@ -31,4 +31,6 @@ public class Vala.CodeGenerator : CodeVisitor {
 	 */
 	public virtual void emit (CodeContext context) {
 	}
+
+	public abstract LocalVariable create_local (DataType type);
 }