The Tor Browser: js/src/frontend/FoldConstants.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * vim: set ts=8 sts=4 et sw=4 tw=99:

     3  * This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef frontend_FoldConstants_h

     8 #define frontend_FoldConstants_h

    10 #include "frontend/SyntaxParseHandler.h"

    12 namespace js {

    13 namespace frontend {

    15 // Perform constant folding on the given AST. For example, the program

    16 // `print(2 + 2)` would become `print(4)`.

    17 //

    18 // pnp is the address of a pointer variable that points to the root node of the

    19 // AST. On success, *pnp points to the root node of the new tree, which may be

    20 // the same node (unchanged or modified in place) or a new node.

    21 //

    22 // Usage:

    23 //    pn = parser->statement();

    24 //    if (!pn)

    25 //        return false;

    26 //    if (!FoldConstants(cx, &pn, parser))

    27 //        return false;

    28 bool

    29 FoldConstants(ExclusiveContext *cx, ParseNode **pnp, Parser<FullParseHandler> *parser);

    31 inline bool

    32 FoldConstants(ExclusiveContext *cx, SyntaxParseHandler::Node *pnp,

    33               Parser<SyntaxParseHandler> *parser)

    34 {

    35     return true;

    36 }

    38 } /* namespace frontend */

    39 } /* namespace js */

    41 #endif /* frontend_FoldConstants_h */

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