elexis
1e07787e76
64bit conversions (including the long ones) are not safe, because not every number can be converted to the 2^53 JS numbers and pretending to do so is asking for bugs. Explicitly use the double type in the Replay menu, because std::time_t is unspecified and some platforms like Ubuntu yakkety:i386 fail to build, looking for long. Double should work for the next 285 million years, becomes consistent with SavedGame.cpp, is tested by test_ScriptConversions.cpp and doesn't pretend to cover all 64bit numbers. Patch By: echotangoecho Differential Revision: https://code.wildfiregames.com/D205 Refs #3848 D84 D112 This was SVN commit r19367.
345 lines
9.9 KiB
C++
345 lines
9.9 KiB
C++
/* Copyright (C) 2017 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "ScriptConversions.h"
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#include "graphics/Entity.h"
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#include "maths/Vector2D.h"
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#include "ps/utf16string.h"
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#include "ps/CStr.h"
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#define FAIL(msg) STMT(JS_ReportError(cx, msg); return false)
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// Implicit type conversions often hide bugs, so warn about them
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#define WARN_IF_NOT(c, v) STMT(if (!(c)) { JS_ReportWarning(cx, "Script value conversion check failed: %s (got type %s)", #c, InformalValueTypeName(v)); })
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// TODO: SpiderMonkey: Follow upstream progresses about JS_InformalValueTypeName in the API
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// https://bugzilla.mozilla.org/show_bug.cgi?id=1285917
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static const char* InformalValueTypeName(const JS::Value& v)
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{
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if (v.isObject())
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return "object";
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if (v.isString())
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return "string";
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if (v.isSymbol())
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return "symbol";
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if (v.isNumber())
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return "number";
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if (v.isBoolean())
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return "boolean";
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if (v.isNull())
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return "null";
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if (v.isUndefined())
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return "undefined";
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return "value";
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}
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template<> bool ScriptInterface::FromJSVal<bool>(JSContext* cx, JS::HandleValue v, bool& out)
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{
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JSAutoRequest rq(cx);
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WARN_IF_NOT(v.isBoolean(), v);
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out = JS::ToBoolean(v);
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<float>(JSContext* cx, JS::HandleValue v, float& out)
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{
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JSAutoRequest rq(cx);
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double tmp;
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WARN_IF_NOT(v.isNumber(), v);
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if (!JS::ToNumber(cx, v, &tmp))
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return false;
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out = tmp;
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<double>(JSContext* cx, JS::HandleValue v, double& out)
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{
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JSAutoRequest rq(cx);
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WARN_IF_NOT(v.isNumber(), v);
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if (!JS::ToNumber(cx, v, &out))
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return false;
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<i32>(JSContext* cx, JS::HandleValue v, i32& out)
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{
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JSAutoRequest rq(cx);
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WARN_IF_NOT(v.isNumber(), v);
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if (!JS::ToInt32(cx, v, &out))
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return false;
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<u32>(JSContext* cx, JS::HandleValue v, u32& out)
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{
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JSAutoRequest rq(cx);
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WARN_IF_NOT(v.isNumber(), v);
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if (!JS::ToUint32(cx, v, &out))
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return false;
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<u16>(JSContext* cx, JS::HandleValue v, u16& out)
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{
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JSAutoRequest rq(cx);
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WARN_IF_NOT(v.isNumber(), v);
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if (!JS::ToUint16(cx, v, &out))
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return false;
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<u8>(JSContext* cx, JS::HandleValue v, u8& out)
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{
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JSAutoRequest rq(cx);
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u16 tmp;
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WARN_IF_NOT(v.isNumber(), v);
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if (!JS::ToUint16(cx, v, &tmp))
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return false;
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out = (u8)tmp;
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<std::wstring>(JSContext* cx, JS::HandleValue v, std::wstring& out)
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{
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JSAutoRequest rq(cx);
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WARN_IF_NOT(v.isString() || v.isNumber(), v); // allow implicit number conversions
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JS::RootedString str(cx, JS::ToString(cx, v));
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if (!str)
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FAIL("Argument must be convertible to a string");
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if (JS_StringHasLatin1Chars(str))
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{
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size_t length;
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JS::AutoCheckCannotGC nogc;
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const JS::Latin1Char* ch = JS_GetLatin1StringCharsAndLength(cx, nogc, str, &length);
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if (!ch)
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FAIL("JS_GetLatin1StringCharsAndLength failed");
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out.assign(ch, ch + length);
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}
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else
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{
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size_t length;
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JS::AutoCheckCannotGC nogc;
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const char16_t* ch = JS_GetTwoByteStringCharsAndLength(cx, nogc, str, &length);
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if (!ch)
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FAIL("JS_GetTwoByteStringsCharsAndLength failed"); // out of memory
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out.assign(ch, ch + length);
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}
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<Path>(JSContext* cx, JS::HandleValue v, Path& out)
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{
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std::wstring string;
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if (!FromJSVal(cx, v, string))
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return false;
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out = string;
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<std::string>(JSContext* cx, JS::HandleValue v, std::string& out)
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{
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JSAutoRequest rq(cx);
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WARN_IF_NOT(v.isString() || v.isNumber(), v); // allow implicit number conversions
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JS::RootedString str(cx, JS::ToString(cx, v));
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if (!str)
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FAIL("Argument must be convertible to a string");
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char* ch = JS_EncodeString(cx, str); // chops off high byte of each char16_t
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if (!ch)
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FAIL("JS_EncodeString failed"); // out of memory
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out.assign(ch, ch + JS_GetStringLength(str));
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JS_free(cx, ch);
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return true;
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}
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template<> bool ScriptInterface::FromJSVal<CStr8>(JSContext* cx, JS::HandleValue v, CStr8& out)
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{
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return ScriptInterface::FromJSVal(cx, v, static_cast<std::string&>(out));
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}
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template<> bool ScriptInterface::FromJSVal<CStrW>(JSContext* cx, JS::HandleValue v, CStrW& out)
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{
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return ScriptInterface::FromJSVal(cx, v, static_cast<std::wstring&>(out));
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}
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template<> bool ScriptInterface::FromJSVal<Entity>(JSContext* cx, JS::HandleValue v, Entity& out)
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{
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JSAutoRequest rq(cx);
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if (!v.isObject())
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FAIL("Argument must be an object");
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JS::RootedObject obj(cx, &v.toObject());
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JS::RootedValue templateName(cx);
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JS::RootedValue id(cx);
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JS::RootedValue player(cx);
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JS::RootedValue position(cx);
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JS::RootedValue rotation(cx);
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// TODO: Report type errors
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if (!JS_GetProperty(cx, obj, "player", &player) || !FromJSVal(cx, player, out.playerID))
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FAIL("Failed to read Entity.player property");
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if (!JS_GetProperty(cx, obj, "templateName", &templateName) || !FromJSVal(cx, templateName, out.templateName))
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FAIL("Failed to read Entity.templateName property");
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if (!JS_GetProperty(cx, obj, "id", &id) || !FromJSVal(cx, id, out.entityID))
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FAIL("Failed to read Entity.id property");
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if (!JS_GetProperty(cx, obj, "position", &position) || !FromJSVal(cx, position, out.position))
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FAIL("Failed to read Entity.position property");
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if (!JS_GetProperty(cx, obj, "rotation", &rotation) || !FromJSVal(cx, rotation, out.rotation))
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FAIL("Failed to read Entity.rotation property");
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return true;
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}
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////////////////////////////////////////////////////////////////
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// Primitive types:
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template<> void ScriptInterface::ToJSVal<bool>(JSContext* UNUSED(cx), JS::MutableHandleValue ret, const bool& val)
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{
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ret.setBoolean(val);
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}
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template<> void ScriptInterface::ToJSVal<float>(JSContext* UNUSED(cx), JS::MutableHandleValue ret, const float& val)
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{
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ret.set(JS::NumberValue(val));
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}
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template<> void ScriptInterface::ToJSVal<double>(JSContext* UNUSED(cx), JS::MutableHandleValue ret, const double& val)
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{
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ret.set(JS::NumberValue(val));
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}
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template<> void ScriptInterface::ToJSVal<i32>(JSContext* UNUSED(cx), JS::MutableHandleValue ret, const i32& val)
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{
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ret.set(JS::NumberValue(val));
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}
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template<> void ScriptInterface::ToJSVal<u16>(JSContext* UNUSED(cx), JS::MutableHandleValue ret, const u16& val)
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{
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ret.set(JS::NumberValue(val));
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}
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template<> void ScriptInterface::ToJSVal<u8>(JSContext* UNUSED(cx), JS::MutableHandleValue ret, const u8& val)
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{
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ret.set(JS::NumberValue(val));
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}
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template<> void ScriptInterface::ToJSVal<u32>(JSContext* UNUSED(cx), JS::MutableHandleValue ret, const u32& val)
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{
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ret.set(JS::NumberValue(val));
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}
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template<> void ScriptInterface::ToJSVal<std::wstring>(JSContext* cx, JS::MutableHandleValue ret, const std::wstring& val)
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{
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JSAutoRequest rq(cx);
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utf16string utf16(val.begin(), val.end());
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JS::RootedString str(cx, JS_NewUCStringCopyN(cx, reinterpret_cast<const char16_t*> (utf16.c_str()), utf16.length()));
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if (str)
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ret.setString(str);
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else
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ret.setUndefined();
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}
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template<> void ScriptInterface::ToJSVal<Path>(JSContext* cx, JS::MutableHandleValue ret, const Path& val)
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{
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ToJSVal(cx, ret, val.string());
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}
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template<> void ScriptInterface::ToJSVal<std::string>(JSContext* cx, JS::MutableHandleValue ret, const std::string& val)
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{
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JSAutoRequest rq(cx);
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JS::RootedString str(cx, JS_NewStringCopyN(cx, val.c_str(), val.length()));
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if (str)
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ret.setString(str);
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else
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ret.setUndefined();
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}
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template<> void ScriptInterface::ToJSVal<const wchar_t*>(JSContext* cx, JS::MutableHandleValue ret, const wchar_t* const& val)
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{
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ToJSVal(cx, ret, std::wstring(val));
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}
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template<> void ScriptInterface::ToJSVal<const char*>(JSContext* cx, JS::MutableHandleValue ret, const char* const& val)
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{
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JSAutoRequest rq(cx);
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JS::RootedString str(cx, JS_NewStringCopyZ(cx, val));
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if (str)
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ret.setString(str);
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else
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ret.setUndefined();
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}
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template<> void ScriptInterface::ToJSVal<CStrW>(JSContext* cx, JS::MutableHandleValue ret, const CStrW& val)
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{
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ToJSVal(cx, ret, static_cast<const std::wstring&>(val));
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}
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template<> void ScriptInterface::ToJSVal<CStr8>(JSContext* cx, JS::MutableHandleValue ret, const CStr8& val)
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{
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ToJSVal(cx, ret, static_cast<const std::string&>(val));
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}
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////////////////////////////////////////////////////////////////
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// Compound types
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// Instantiate various vector types:
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JSVAL_VECTOR(int)
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JSVAL_VECTOR(u32)
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JSVAL_VECTOR(u16)
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JSVAL_VECTOR(std::string)
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JSVAL_VECTOR(std::wstring)
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JSVAL_VECTOR(CStr8)
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class IComponent;
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template<> void ScriptInterface::ToJSVal<std::vector<IComponent*> >(JSContext* cx, JS::MutableHandleValue ret, const std::vector<IComponent*>& val)
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{
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ToJSVal_vector(cx, ret, val);
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}
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template<> bool ScriptInterface::FromJSVal<std::vector<Entity> >(JSContext* cx, JS::HandleValue v, std::vector<Entity>& out)
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{
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return FromJSVal_vector(cx, v, out);
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}
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template<> void ScriptInterface::ToJSVal<CVector2D>(JSContext* cx, JS::MutableHandleValue ret, const CVector2D& val)
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{
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std::vector<float> vec = {val.X, val.Y};
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ToJSVal_vector(cx, ret, vec);
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}
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template<> bool ScriptInterface::FromJSVal<CVector2D>(JSContext* cx, JS::HandleValue v, CVector2D& out)
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{
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std::vector<float> vec;
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if (!FromJSVal_vector(cx, v, vec))
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return false;
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if (vec.size() != 2)
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return false;
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out.X = vec[0];
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out.Y = vec[1];
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return true;
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}
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