138 lines
4.2 KiB
C++
138 lines
4.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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****************************************************************************/
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#ifndef DEBUGGING_H
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#define DEBUGGING_H
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#include "qmljs_engine.h"
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#include "qmljs_environment.h"
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#include <QHash>
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namespace QQmlJS {
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namespace IR {
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struct BasicBlock;
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struct Function;
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} // namespace IR
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namespace Debugging {
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class Debugger;
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struct FunctionDebugInfo { // TODO: use opaque d-pointers here
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IR::Function *function;
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QHash<ptrdiff_t, IR::BasicBlock *> blockOffsets;
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unsigned startLine, startColumn;
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FunctionDebugInfo(IR::Function *function): function(function), startLine(0), startColumn(0) {}
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void addBasicBlockOffset(IR::BasicBlock *block, ptrdiff_t offset) {
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blockOffsets.insert(offset, block);
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}
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void setSourceLocation(unsigned line, unsigned column)
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{ startLine = line; startColumn = column; }
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};
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class FunctionState
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{
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public:
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FunctionState(VM::ExecutionContext *context);
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virtual ~FunctionState();
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virtual VM::Value *argument(unsigned idx);
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virtual VM::Value *local(unsigned idx);
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virtual VM::Value *temp(unsigned idx) = 0;
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VM::ExecutionContext *context() const
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{ return _context; }
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Debugger *debugger() const
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{ return _context->engine->debugger; }
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private:
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VM::ExecutionContext *_context;
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};
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struct CallInfo
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{
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VM::ExecutionContext *context;
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VM::FunctionObject *function;
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FunctionState *state;
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CallInfo(VM::ExecutionContext *context = 0, VM::FunctionObject *function = 0, FunctionState *state = 0)
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: context(context)
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, function(function)
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, state(state)
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{}
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};
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class Debugger
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{
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public:
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Debugger(VM::ExecutionEngine *_engine);
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~Debugger();
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public: // compile-time interface
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void addFunction(IR::Function *function);
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void addaddBasicBlockOffset(IR::Function *function, IR::BasicBlock *block, ptrdiff_t blockOffset);
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void setSourceLocation(IR::Function *function, unsigned line, unsigned column);
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public: // run-time querying interface
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FunctionDebugInfo *debugInfo(VM::FunctionObject *function) const;
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QString name(VM::FunctionObject *function) const;
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public: // execution hooks
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void aboutToCall(VM::FunctionObject *function, VM::ExecutionContext *context);
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void justLeft(VM::ExecutionContext *context);
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void enterFunction(FunctionState *state);
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void leaveFunction(FunctionState *state);
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void aboutToThrow(VM::Value *value);
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public: // debugging hooks
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FunctionState *currentState() const;
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const char *currentArg(unsigned idx) const;
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const char *currentLocal(unsigned idx) const;
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const char *currentTemp(unsigned idx) const;
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private:
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int callIndex(VM::ExecutionContext *context);
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private: // TODO: use opaque d-pointers here
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VM::ExecutionEngine *_engine;
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QHash<IR::Function *, FunctionDebugInfo *> _functionInfo;
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QVector<CallInfo> _callStack;
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};
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} // namespace Debugging
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} // namespace QQmlJS
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#endif // DEBUGGING_H
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