Refactor ir_dereference support for ir_visitor

Move the accept method for visitors from ir_dereference to the derived
classes.

1 files changed, 22 insertions, 8 deletions

diff --git a/ir_constant_expression.cpp b/ir_constant_expression.cpp
index e5626c5..076fdfd 100644
--- a/ir_constant_expression.cpp
+++ b/ir_constant_expression.cpp
@@ -67,7 +67,9 @@ public:
    virtual void visit(ir_function *);
    virtual void visit(ir_expression *);
    virtual void visit(ir_swizzle *);
-   virtual void visit(ir_dereference *);
+   virtual void visit(ir_dereference_variable *);
+   virtual void visit(ir_dereference_array *);
+   virtual void visit(ir_dereference_record *);
    virtual void visit(ir_assignment *);
    virtual void visit(ir_constant *);
    virtual void visit(ir_call *);
@@ -412,16 +414,28 @@ ir_constant_visitor::visit(ir_swizzle *ir)
 
 
 void
-ir_constant_visitor::visit(ir_dereference *ir)
+ir_constant_visitor::visit(ir_dereference_variable *ir)
 {
    value = NULL;
 
-   if (ir->mode == ir_dereference::ir_reference_variable) {
-      ir_variable *var = ir->var->as_variable();
-      if (var && var->constant_value) {
-	 value = new ir_constant(ir->type, &var->constant_value->value);
-      }
-   }
+   ir_variable *var = ir->variable_referenced();
+   if (var && var->constant_value)
+      value = new ir_constant(ir->type, &var->constant_value->value);
+}
+
+
+void
+ir_constant_visitor::visit(ir_dereference_array *ir)
+{
+   value = NULL;
+   /* FINISHME: Other dereference modes. */
+}
+
+
+void
+ir_constant_visitor::visit(ir_dereference_record *ir)
+{
+   value = NULL;
    /* FINISHME: Other dereference modes. */
 }