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