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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:
*
* Copyright 2014 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef wasm_AsmJS_h
#define wasm_AsmJS_h
#include "mozilla/Utf8.h" // mozilla::Utf8Unit
#include <stdint.h> // uint32_t
#include "jstypes.h" // JS_PUBLIC_API
#include "js/CallArgs.h" // JSNative
struct JS_PUBLIC_API JSContext;
class JS_PUBLIC_API JSFunction;
namespace JS {
class JS_PUBLIC_API Value;
template <typename T>
class Handle;
} // namespace JS
namespace js {
namespace frontend {
class ParserAtomsTable;
class ParseContext;
class ParseNode;
template <class ParseHandler, typename CharT>
class Parser;
class FullParseHandler;
} // namespace frontend
template <typename Unit>
using AsmJSParser = frontend::Parser<frontend::FullParseHandler, Unit>;
// This function takes over parsing of a function starting with "use asm". The
// return value indicates whether an error was reported which the caller should
// propagate. If no error was reported, the function may still fail to validate
// as asm.js. In this case, the parser.tokenStream has been advanced an
// indeterminate amount and the entire function should be reparsed from the
// beginning.
[[nodiscard]] extern bool CompileAsmJS(JSContext* cx,
frontend::ParserAtomsTable& parserAtoms,
AsmJSParser<mozilla::Utf8Unit>& parser,
frontend::ParseNode* stmtList,
bool* validated);
[[nodiscard]] extern bool CompileAsmJS(JSContext* cx,
frontend::ParserAtomsTable& parserAtoms,
AsmJSParser<char16_t>& parser,
frontend::ParseNode* stmtList,
bool* validated);
// asm.js module/export queries:
extern bool IsAsmJSModuleNative(JSNative native);
extern bool IsAsmJSModule(JSFunction* fun);
extern bool IsAsmJSFunction(JSFunction* fun);
extern bool IsAsmJSStrictModeModuleOrFunction(JSFunction* fun);
extern bool InstantiateAsmJS(JSContext* cx, unsigned argc, JS::Value* vp);
// asm.js testing natives:
extern bool IsAsmJSCompilationAvailable(JSContext* cx, unsigned argc,
JS::Value* vp);
extern bool IsAsmJSModule(JSContext* cx, unsigned argc, JS::Value* vp);
extern bool IsAsmJSFunction(JSContext* cx, unsigned argc, JS::Value* vp);
// asm.js toString/toSource support:
extern JSString* AsmJSFunctionToString(JSContext* cx,
JS::Handle<JSFunction*> fun);
extern JSString* AsmJSModuleToString(JSContext* cx, JS::Handle<JSFunction*> fun,
bool isToSource);
// asm.js heap:
extern bool IsValidAsmJSHeapLength(size_t length);
} // namespace js
#endif // wasm_AsmJS_h
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