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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* 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 "frontend/SyntaxParseHandler.h"
namespace js {
namespace frontend {
class FullParseHandler;
template <class ParseHandler>
class PerHandlerParser;
// 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, parserAtoms, &pn, parser)) {
// return false;
// }
extern MOZ_MUST_USE bool FoldConstants(JSContext* cx,
ParserAtomsTable& parserAtoms,
ParseNode** pnp,
FullParseHandler* handler);
inline MOZ_MUST_USE bool FoldConstants(JSContext* cx,
ParserAtomsTable& parserAtoms,
typename SyntaxParseHandler::Node* pnp,
SyntaxParseHandler* handler) {
return true;
}
} /* namespace frontend */
} /* namespace js */
#endif /* frontend_FoldConstants_h */
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