X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fglsl%2Fir_hierarchical_visitor.h;h=1988ad0910bf556d124c6d90a190600f04dfe78e;hb=c84e8d039ec9c7532b25757012aa3828f4f8a70d;hp=2c4590d4b10de2f6f02e2d0a9ad5fbf1dde18ea9;hpb=16efab1c4dee6e6a827ba5f1c482378159545ae5;p=mesa.git

diff --git a/src/glsl/ir_hierarchical_visitor.h b/src/glsl/ir_hierarchical_visitor.h
index 2c4590d4b10..1988ad0910b 100644
--- a/src/glsl/ir_hierarchical_visitor.h
+++ b/src/glsl/ir_hierarchical_visitor.h
@@ -36,6 +36,7 @@ enum ir_visitor_status {
 };
 
 
+#ifdef __cplusplus
 /**
  * Base class of hierarchical visitors of IR instruction trees
  *
@@ -82,6 +83,7 @@ public:
     * \name Visit methods for leaf-node classes
     */
    /*@{*/
+   virtual ir_visitor_status visit(class ir_rvalue *);
    virtual ir_visitor_status visit(class ir_variable *);
    virtual ir_visitor_status visit(class ir_constant *);
    virtual ir_visitor_status visit(class ir_loop_jump *);
@@ -141,6 +143,16 @@ public:
     */
    void run(struct exec_list *instructions);
 
+   /* Some visitors may need to insert new variable declarations and
+    * assignments for portions of a subtree, which means they need a
+    * pointer to the current instruction in the stream, not just their
+    * node in the tree rooted at that instruction.
+    *
+    * This is implemented by visit_list_elements -- if the visitor is
+    * not called by it, nothing good will happen.
+    */
+   class ir_instruction *base_ir;
+
    /**
     * Callback function that is invoked on entry to each node visited.
     *
@@ -155,10 +167,21 @@ public:
     * Extra data parameter passed to the per-node callback function
     */
    void *data;
+
+   /**
+    * Currently in the LHS of an assignment?
+    *
+    * This is set and cleared by the \c ir_assignment::accept method.
+    */
+   bool in_assignee;
 };
 
 void visit_tree(ir_instruction *ir,
 		void (*callback)(class ir_instruction *ir, void *data),
 		void *data);
 
+ir_visitor_status visit_list_elements(ir_hierarchical_visitor *v, exec_list *l,
+                                      bool statement_list = true);
+#endif /* __cplusplus */
+
 #endif /* IR_HIERARCHICAL_VISITOR_H */