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272 lines
7.4 KiB
272 lines
7.4 KiB
/***************************************************************************
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begin : Sun Aug 8 1999
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copyright : (C) 1999 by John Birch
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email : jbb@kdevelop.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program 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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***************************************************************************/
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#ifndef _GDBCOMMAND_H_
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#define _GDBCOMMAND_H_
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#include <tqobject.h>
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#include <tqstring.h>
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#include <tqvaluevector.h>
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#include "mi/gdbmi.h"
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#include <tqguardedptr.h>
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namespace GDBDebugger
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{
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class Breakpoint;
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class VarItem;
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class ValueCallback;
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/**
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* @author John Birch
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*/
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class GDBCommand
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{
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public:
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GDBCommand(const TQString& command);
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template<class Handler>
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GDBCommand(const TQString& command,
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Handler* handler_this,
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void (Handler::* handler_method)(const GDBMI::ResultRecord&),
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bool handlesError = false);
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/* The command that should be sent to gdb.
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This method is virtual so the command can compute this
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dynamically, possibly using results of the previous
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commands.
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If the empty string is returned, nothing is sent. */
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virtual TQString cmdToSend();
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/* Returns the initial string that was specified in
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ctor invocation. The actual command will be
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determined by cmdToSend above and the return
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value of this method is only used in various
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diagnostic messages emitted before actually
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sending the command. */
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TQString initialString() const;
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/* Returns true if this is command entered by the user
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and so should be always shown in the gdb output window. */
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virtual bool isUserCommand() const;
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// If there's a handler for this command, invokes it and returns true.
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// Otherwise, returns false.
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virtual bool invokeHandler(const GDBMI::ResultRecord& r);
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// Returns 'true' if 'invokeHandler' should be invoked even
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// on MI errors.
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bool handlesError() const;
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virtual ~GDBCommand();
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// Called by gdbcontroller for each new output string
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// gdb emits for this command. In MI mode, this includes
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// all "stream" messages, but does not include MI responses.
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void newOutput(const TQString&);
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const TQValueVector<TQString>& allStreamOutput() const;
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// True if this command run then target for
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// unspecified period of time -- that is either 'run' or
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// 'continue'.
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bool isRun() const;
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void setRun(bool run);
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private:
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TQString command_;
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TQGuardedPtr<TQObject> handler_this;
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typedef void (TQObject::* handler_t)(const GDBMI::ResultRecord&);
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handler_t handler_method;
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TQValueVector<TQString> lines;
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bool run;
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protected: // FIXME: should be private, after I kill the first ctor
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// that is obsolete and no longer necessary.
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bool handlesError_;
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};
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class UserCommand : public GDBCommand
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{
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public:
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UserCommand(const TQString& s);
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bool isUserCommand() const;
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};
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/** This command is used to change some property of breakpoint.
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It holds a pointer to a Breakpoint object and will substitute
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breakpoint id into the command string.
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So, the command can be issued before the breakpoint id is know. That
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is, it's possible to queue add + modify pair. The add command will
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set breakpoint id and modify command will use it.
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*/
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class ModifyBreakpointCommand : public GDBCommand
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{
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public:
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/** The 'comamnd' should include a single format specifier "%1" that
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will be replaced with the id of breakpoint.
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*/
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ModifyBreakpointCommand(const TQString& command, const Breakpoint* bp);
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public: // DbgCommand overrides
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virtual TQString cmdToSend();
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private:
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const Breakpoint* bp_;
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};
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/** This is a class for raw CLI commands. Instead of invoking
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user provided hook with MI response, it invokes the a hook
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with lists of strings.
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*/
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class CliCommand : public GDBCommand
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{
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public:
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template<class Handler>
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CliCommand(const TQString& command,
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Handler* handler_this,
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void (Handler::* handler_method)(const TQValueVector<TQString>&),
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bool handlesError = false);
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public: // GDBCommand overrides
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bool invokeHandler(const GDBMI::ResultRecord& r);
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private:
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TQGuardedPtr<TQObject> cli_handler_this;
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typedef void (TQObject::* cli_handler_t)(const TQValueVector<TQString>&);
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cli_handler_t cli_handler_method;
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};
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/** Command that does nothing and can be just used to invoke
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a user provided handler when all preceeding commands are
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executed.
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*/
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class SentinelCommand : public GDBCommand
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{
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public:
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typedef void (TQObject::*handler_method_t)();
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template<class Handler>
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SentinelCommand(Handler* handler_this,
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void (Handler::* handler_method)())
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: GDBCommand(""),
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handler_this(handler_this),
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handler_method(static_cast<handler_method_t>(handler_method))
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{}
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void invokeHandler()
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{
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(handler_this->*handler_method)();
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}
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TQString cmdToSend()
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{
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return "";
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}
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private:
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TQGuardedPtr<TQObject> handler_this;
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handler_method_t handler_method;
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};
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/* Command for which we don't want any reply. */
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class ResultlessCommand : public TQObject, public GDBCommand
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{
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public:
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ResultlessCommand(const TQString& command, bool handlesError = false)
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: GDBCommand(command, this, &ResultlessCommand::handle, handlesError)
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{}
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private:
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void handle(const GDBMI::ResultRecord&)
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{}
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};
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class ExpressionValueCommand : public TQObject, public GDBCommand
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{
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public:
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typedef void (TQObject::*handler_method_t)(const TQString&);
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template<class Handler>
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ExpressionValueCommand(
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const TQString& expression,
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Handler* handler_this,
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void (Handler::* handler_method)(const TQString&))
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: GDBCommand(("-data-evaluate-expression " + expression).ascii(), this,
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&ExpressionValueCommand::handleResponse),
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handler_this(handler_this),
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handler_method(static_cast<handler_method_t>(handler_method))
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{}
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void handleResponse(const GDBMI::ResultRecord& r)
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{
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(handler_this->*handler_method)(r["value"].literal());
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}
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private:
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TQGuardedPtr<TQObject> handler_this;
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handler_method_t handler_method;
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};
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template<class Handler>
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GDBCommand::GDBCommand(
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const TQString& command,
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Handler* handler_this,
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void (Handler::* handler_method)(const GDBMI::ResultRecord&),
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bool handlesError)
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: command_(command),
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handler_this(handler_this),
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handler_method(static_cast<handler_t>(handler_method)),
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run(false),
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handlesError_(handlesError)
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{
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}
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template<class Handler>
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CliCommand::CliCommand(
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const TQString& command,
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Handler* handler_this,
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void (Handler::* handler_method)(const TQValueVector<TQString>&),
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bool handlesError)
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: GDBCommand(command.latin1()),
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cli_handler_this(handler_this),
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cli_handler_method(static_cast<cli_handler_t>(handler_method))
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{
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handlesError_ = handlesError;
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}
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}
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#endif
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