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// Copyright 2010 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef V8_REWRITER_H_
#define V8_REWRITER_H_
namespace v8 {
namespace internal {
class CompilationInfo;
class Rewriter {
public:
// Rewrite top-level code (ECMA 262 "programs") so as to conservatively
// include an assignment of the value of the last statement in the code to
// a compiler-generated temporary variable wherever needed.
//
// Assumes code has been parsed and scopes have been analyzed. Mutates the
// AST, so the AST should not continue to be used in the case of failure.
static bool Rewrite(CompilationInfo* info);
// Perform a suite of simple non-iterative analyses of the AST. Mark
// expressions that are likely smis, expressions without side effects,
// expressions whose value will be converted to Int32, and expressions in a
// context where +0 and -0 are treated the same.
//
// Assumes code has been parsed and scopes have been analyzed. Mutates the
// AST, so the AST should not continue to be used in the case of failure.
static bool Analyze(CompilationInfo* info);
};
} } // namespace v8::internal
#endif // V8_REWRITER_H_
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