diff options
author | Ian Romanick <ian.d.romanick@intel.com> | 2010-03-09 16:23:37 -0800 |
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committer | Ian Romanick <ian.d.romanick@intel.com> | 2010-03-09 16:26:15 -0800 |
commit | 78b51b0fdd61b58940f9043ef9046217552f2c70 (patch) | |
tree | 61f60182a78feec1288f97fc1f78b6d921ae6b19 /ir_visitor.h | |
parent | fce1150156edc8b51f5cf077679c0fdb5d582aba (diff) |
IR visitor: Add initial version of ir_visitor classes
The ir_visitor class is the abstract base class for all visitors.
ir_print_visitor contains the beginnings of a concrete visitor class
that will print out an IR sequence in a Lisp / Scheme-like syntax.
Diffstat (limited to 'ir_visitor.h')
-rw-r--r-- | ir_visitor.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/ir_visitor.h b/ir_visitor.h new file mode 100644 index 0000000000..4494074eca --- /dev/null +++ b/ir_visitor.h @@ -0,0 +1,57 @@ +/* + * Copyright © 2010 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#pragma once +#ifndef IR_VISITOR_H +#define IR_VISITOR_H + +/** + * Abstract base class of visitors of IR instruction trees + */ +class ir_visitor { +public: + virtual ~ir_visitor() + { + /* empty */ + } + + /** + * \name Visit methods + * + * As typical for the visitor pattern, there must be one \c visit method for + * each concrete subclass of \c ir_instruction. Virtual base classes within + * the hierarchy should not have \c visit methods. + */ + /*@{*/ + virtual void visit(class ir_variable *) = 0; + virtual void visit(class ir_label *) = 0; + virtual void visit(class ir_function_signature *) = 0; + virtual void visit(class ir_function *) = 0; + virtual void visit(class ir_expression *) = 0; + virtual void visit(class ir_dereference *) = 0; + virtual void visit(class ir_assignment *) = 0; + virtual void visit(class ir_constant *) = 0; + /*@}*/ +}; + +#endif /* IR_VISITOR_H */ |