diff options
author | Erik Verbruggen <erik.verbruggen@qt.io> | 2018-04-27 13:12:26 +0200 |
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committer | Simon Hausmann <simon.hausmann@qt.io> | 2018-05-28 10:24:17 +0000 |
commit | 5936429045623a1a04901258d1974cb07a9fc087 (patch) | |
tree | 896a720b4a73a10c5f819b8d0756574a06b105bc /src/qml/compiler/qv4bytecodehandler_p.h | |
parent | 7dc48bb0b56de00faab2d67570c74f0512991263 (diff) |
Move bytecode handler into a separate file, so it can be re-used
Change-Id: I11721025fd3df5efbcc6f6c8cb31fa2f89ead03f
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Diffstat (limited to 'src/qml/compiler/qv4bytecodehandler_p.h')
-rw-r--r-- | src/qml/compiler/qv4bytecodehandler_p.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/qml/compiler/qv4bytecodehandler_p.h b/src/qml/compiler/qv4bytecodehandler_p.h new file mode 100644 index 0000000000..5f1121306f --- /dev/null +++ b/src/qml/compiler/qv4bytecodehandler_p.h @@ -0,0 +1,113 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QV4BYTECODEHANDLER_P_H +#define QV4BYTECODEHANDLER_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// +#include <private/qv4instr_moth_p.h> + +QT_BEGIN_NAMESPACE + +namespace QV4 { +namespace Moth { + +#define BYTECODE_HANDLER_DEFINE_ARGS(nargs, ...) \ + MOTH_EXPAND_FOR_MSVC(BYTECODE_HANDLER_DEFINE_ARGS##nargs(__VA_ARGS__)) + +#define BYTECODE_HANDLER_DEFINE_ARGS0() +#define BYTECODE_HANDLER_DEFINE_ARGS1(arg) \ + int arg +#define BYTECODE_HANDLER_DEFINE_ARGS2(arg1, arg2) \ + int arg1, \ + int arg2 +#define BYTECODE_HANDLER_DEFINE_ARGS3(arg1, arg2, arg3) \ + int arg1, \ + int arg2, \ + int arg3 +#define BYTECODE_HANDLER_DEFINE_ARGS4(arg1, arg2, arg3, arg4) \ + int arg1, \ + int arg2, \ + int arg3, \ + int arg4 + +#define BYTECODE_HANDLER_DEFINE_VIRTUAL_BYTECODE_HANDLER_INSTRUCTION(name, nargs, ...) \ + virtual void generate_##name( \ + BYTECODE_HANDLER_DEFINE_ARGS(nargs, __VA_ARGS__) \ + ) = 0; + +#define BYTECODE_HANDLER_DEFINE_VIRTUAL_BYTECODE_HANDLER(instr) \ + INSTR_##instr(BYTECODE_HANDLER_DEFINE_VIRTUAL_BYTECODE_HANDLER) + +class ByteCodeHandler +{ +public: + virtual ~ByteCodeHandler(); + + void decode(const char *code, uint len); + + int instructionOffset() const { return _offset; } + + static std::vector<int> collectLabelsInBytecode(const char *code, uint len); + +protected: + FOR_EACH_MOTH_INSTR(BYTECODE_HANDLER_DEFINE_VIRTUAL_BYTECODE_HANDLER) + + virtual void startInstruction(Moth::Instr::Type instr) = 0; + virtual void endInstruction(Moth::Instr::Type instr) = 0; + +private: + int _offset = 0; +}; + +} // Moth namespace +} // QV4 namespace + +QT_END_NAMESPACE + +#endif // QV4BYTECODEHANDLER_P_H |