michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef frontend_FoldConstants_h
michael@0: #define frontend_FoldConstants_h
michael@0: 
michael@0: #include "frontend/SyntaxParseHandler.h"
michael@0: 
michael@0: namespace js {
michael@0: namespace frontend {
michael@0: 
michael@0: // Perform constant folding on the given AST. For example, the program
michael@0: // `print(2 + 2)` would become `print(4)`.
michael@0: //
michael@0: // pnp is the address of a pointer variable that points to the root node of the
michael@0: // AST. On success, *pnp points to the root node of the new tree, which may be
michael@0: // the same node (unchanged or modified in place) or a new node.
michael@0: //
michael@0: // Usage:
michael@0: //    pn = parser->statement();
michael@0: //    if (!pn)
michael@0: //        return false;
michael@0: //    if (!FoldConstants(cx, &pn, parser))
michael@0: //        return false;
michael@0: bool
michael@0: FoldConstants(ExclusiveContext *cx, ParseNode **pnp, Parser<FullParseHandler> *parser);
michael@0: 
michael@0: inline bool
michael@0: FoldConstants(ExclusiveContext *cx, SyntaxParseHandler::Node *pnp,
michael@0:               Parser<SyntaxParseHandler> *parser)
michael@0: {
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: } /* namespace frontend */
michael@0: } /* namespace js */
michael@0: 
michael@0: #endif /* frontend_FoldConstants_h */