chromium/v8/src/asmjs/asm-scanner.h

// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef V8_ASMJS_ASM_SCANNER_H_
#define V8_ASMJS_ASM_SCANNER_H_

#include <memory>
#include <string>
#include <unordered_map>

#include "src/asmjs/asm-names.h"
#include "src/base/logging.h"
#include "src/base/strings.h"

namespace v8 {
namespace internal {

class Utf16CharacterStream;

// A custom scanner to extract the token stream needed to parse valid
// asm.js: http://asmjs.org/spec/latest/
// This scanner intentionally avoids the portion of JavaScript lexing
// that are not required to determine if code is valid asm.js code.
// * Strings are disallowed except for 'use asm'.
// * Only the subset of keywords needed to check asm.js invariants are
//   included.
// * Identifiers are accumulated into local + global string tables
//   (for performance).
class V8_EXPORT_PRIVATE AsmJsScanner { … };

}  // namespace internal
}  // namespace v8

#endif  // V8_ASMJS_ASM_SCANNER_H_