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Luca Barbieri wrote:
> This is just a subclass of ir_visitor with empty implementations of all
> the visit methods.
>
> Used to avoid duplicating that in ir_visitor subclasses.
NAK. The methods are missing intentionally. Refer to any documentation
on the visitor design pattern.
> ir_hierarchical_visitor is another way to solve this, but is less natural
> for some applications.
> ---
> src/glsl/ir_visitor.h | 21 +++++++++++++++++++++
> 1 files changed, 21 insertions(+), 0 deletions(-)
>
> diff --git a/src/glsl/ir_visitor.h b/src/glsl/ir_visitor.h
> index b87d737..642a4cc 100644
> --- a/src/glsl/ir_visitor.h
> +++ b/src/glsl/ir_visitor.h
> @@ -64,4 +64,25 @@ public:
> /*...@}*/
> };
>
> +class ir_partial_visitor : public ir_visitor {
> +public:
> + virtual void visit(class ir_variable *) {}
> + virtual void visit(class ir_function_signature *) {}
> + virtual void visit(class ir_function *) {}
> + virtual void visit(class ir_expression *) {}
> + virtual void visit(class ir_texture *) {}
> + virtual void visit(class ir_swizzle *) {}
> + virtual void visit(class ir_dereference_variable *) {}
> + virtual void visit(class ir_dereference_array *) {}
> + virtual void visit(class ir_dereference_record *) {}
> + virtual void visit(class ir_assignment *) {}
> + virtual void visit(class ir_constant *) {}
> + virtual void visit(class ir_call *) {}
> + virtual void visit(class ir_return *) {}
> + virtual void visit(class ir_discard *) {}
> + virtual void visit(class ir_if *) {}
> + virtual void visit(class ir_loop *) {}
> + virtual void visit(class ir_loop_jump *) {}
> +};
> +
> #endif /* IR_VISITOR_H */
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