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ENH: Add variable watch command

This commit is contained in:
Andy Cedilnik 2007-04-11 15:13:05 -04:00
parent 76e5344590
commit f9f1ccadb3
10 changed files with 318 additions and 21 deletions
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3
Source/cmCommands.cxx
View File

@ -52,6 +52,8 @@
#include "cmUseMangledMesaCommand.cxx"
#include "cmUtilitySourceCommand.cxx"
#include "cmVariableRequiresCommand.cxx"
#include "cmVariableWatchCommand.cxx"
#include "cmWhileCommand.cxx"
#include "cmWriteFileCommand.cxx"
@ -105,6 +107,7 @@ void GetPredefinedCommands(std::list<cmCommand*>&
commands.push_back(new cmUseMangledMesaCommand);
commands.push_back(new cmUtilitySourceCommand);
commands.push_back(new cmVariableRequiresCommand);
commands.push_back(new cmVariableWatchCommand);
commands.push_back(new cmWhileCommand);
commands.push_back(new cmWriteFileCommand);
#endif

4
Source/cmFindPackageCommand.cxx
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@ -22,8 +22,10 @@
#endif
void cmFindPackageNeedBackwardsCompatibility(const std::string& variable,
int access_type, void* )
int access_type, void*, const char* newValue,
const cmMakefile*)
{
(void)newValue;
#ifdef CMAKE_BUILD_WITH_CMAKE
if(access_type == cmVariableWatch::UNKNOWN_VARIABLE_READ_ACCESS)
{

21
Source/cmMakefile.cxx
View File

@ -1215,7 +1215,9 @@ void cmMakefile::AddDefinition(const char* name, const char* value)
if ( vv )
{
vv->VariableAccessed(this->TemporaryDefinitionKey,
cmVariableWatch::VARIABLE_MODIFIED_ACCESS);
cmVariableWatch::VARIABLE_MODIFIED_ACCESS,
value,
this);
}
#endif
}
@ -1275,7 +1277,8 @@ void cmMakefile::AddDefinition(const char* name, bool value)
cmVariableWatch* vv = this->GetVariableWatch();
if ( vv )
{
vv->VariableAccessed(name, cmVariableWatch::VARIABLE_MODIFIED_ACCESS);
vv->VariableAccessed(name, cmVariableWatch::VARIABLE_MODIFIED_ACCESS,
value?"ON":"OFF", this);
}
#endif
}
@ -1304,7 +1307,8 @@ void cmMakefile::RemoveDefinition(const char* name)
cmVariableWatch* vv = this->GetVariableWatch();
if ( vv )
{
vv->VariableAccessed(name, cmVariableWatch::VARIABLE_REMOVED_ACCESS);
vv->VariableAccessed(name, cmVariableWatch::VARIABLE_REMOVED_ACCESS,
0, this);
}
#endif
}
@ -1649,7 +1653,8 @@ const char* cmMakefile::GetDefinition(const char* name) const
{
if ( def )
{
vv->VariableAccessed(name, cmVariableWatch::VARIABLE_READ_ACCESS);
vv->VariableAccessed(name, cmVariableWatch::VARIABLE_READ_ACCESS,
def, this);
}
else
{
@ -1659,13 +1664,13 @@ const char* cmMakefile::GetDefinition(const char* name) const
if (pos2 != this->Definitions.end() &&
cmSystemTools::IsOn((*pos2).second.c_str()))
{
vv->VariableAccessed
(name, cmVariableWatch::ALLOWED_UNKNOWN_VARIABLE_READ_ACCESS);
vv->VariableAccessed(name,
cmVariableWatch::ALLOWED_UNKNOWN_VARIABLE_READ_ACCESS, def, this);
}
else
{
vv->VariableAccessed(name, cmVariableWatch::
UNKNOWN_VARIABLE_READ_ACCESS);
vv->VariableAccessed(name,
cmVariableWatch::UNKNOWN_VARIABLE_READ_ACCESS, def, this);
}
}
}

26
Source/cmVariableWatch.cxx
View File

@ -16,6 +16,25 @@
=========================================================================*/
#include "cmVariableWatch.h"
static const char* const cmVariableWatchAccessStrings[] =
{
"READ_ACCESS",
"UNKNOWN_READ_ACCESS",
"ALLOWED_UNKNOWN_READ_ACCESS",
"MODIFIED_ACCESS",
"REMOVED_ACCESS",
"NO_ACCESS"
};
const char* cmVariableWatch::GetAccessAsString(int access_type)
{
if ( access_type < 0 || access_type >= cmVariableWatch::NO_ACCESS )
{
return "NO_ACCESS";
}
return cmVariableWatchAccessStrings[access_type];
}
cmVariableWatch::cmVariableWatch()
{
}
@ -60,7 +79,9 @@ void cmVariableWatch::RemoveWatch(const std::string& variable,
}
void cmVariableWatch::VariableAccessed(const std::string& variable,
int access_type) const
int access_type,
const char* newValue,
const cmMakefile* mf) const
{
cmVariableWatch::StringToVectorOfPairs::const_iterator mit =
this->WatchMap.find(variable);
@ -70,7 +91,8 @@ void cmVariableWatch::VariableAccessed(const std::string& variable,
cmVariableWatch::VectorOfPairs::const_iterator it;
for ( it = vp->begin(); it != vp->end(); it ++ )
{
it->Method(variable, access_type, it->ClientData);
it->Method(variable, access_type, it->ClientData,
newValue, mf);
}
}
}

24
Source/cmVariableWatch.h
View File

@ -19,6 +19,8 @@
#include "cmStandardIncludes.h"
class cmMakefile;
/** \class cmVariableWatch
* \brief Helper class for watching of variable accesses.
*
@ -28,7 +30,7 @@ class cmVariableWatch
{
public:
typedef void (*WatchMethod)(const std::string& variable, int access_type,
void* client_data);
void* client_data, const char* newValue, const cmMakefile* mf);
cmVariableWatch();
~cmVariableWatch();
@ -43,21 +45,27 @@ public:
/**
* This method is called when variable is accessed
*/
void VariableAccessed(const std::string& variable, int access_type) const;
void VariableAccessed(const std::string& variable, int access_type,
const char* newValue, const cmMakefile* mf) const;
/**
* Different access types.
*/
enum
{
VARIABLE_READ_ACCESS,
UNKNOWN_VARIABLE_READ_ACCESS,
ALLOWED_UNKNOWN_VARIABLE_READ_ACCESS,
VARIABLE_MODIFIED_ACCESS,
VARIABLE_REMOVED_ACCESS,
NO_ACCESS
VARIABLE_READ_ACCESS = 0,
UNKNOWN_VARIABLE_READ_ACCESS,
ALLOWED_UNKNOWN_VARIABLE_READ_ACCESS,
VARIABLE_MODIFIED_ACCESS,
VARIABLE_REMOVED_ACCESS,
NO_ACCESS
};
/**
* Return the access as string
*/
static const char* GetAccessAsString(int access_type);
protected:
struct Pair
{

136
Source/cmVariableWatchCommand.cxx Normal file
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@ -0,0 +1,136 @@
/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "cmVariableWatchCommand.h"
#include "cmVariableWatch.h"
//----------------------------------------------------------------------------
static void cmVariableWatchCommandVariableAccessed(
const std::string& variable, int access_type, void* client_data,
const char* newValue, const cmMakefile* mf)
{
cmVariableWatchCommand* command = static_cast<cmVariableWatchCommand*>(client_data);
command->VariableAccessed(variable, access_type, newValue, mf);
}
//----------------------------------------------------------------------------
cmVariableWatchCommand::cmVariableWatchCommand()
{
this->InCallback = false;
}
//----------------------------------------------------------------------------
bool cmVariableWatchCommand::InitialPass(std::vector<std::string> const& args)
{
if ( args.size() < 1 )
{
this->SetError("must be called with at least one argument.");
return false;
}
std::string variable = args[0];
if ( args.size() > 1 )
{
std::string command = args[1];
this->Handlers[variable].Commands.push_back(args[1]);
}
if ( variable == "CMAKE_CURRENT_LIST_FILE" )
{
cmOStringStream ostr;
ostr << "cannot be set on the variable: " << variable.c_str();
this->SetError(ostr.str().c_str());
return false;
}
this->Makefile->GetCMakeInstance()->GetVariableWatch()->AddWatch(
variable, cmVariableWatchCommandVariableAccessed, this);
return true;
}
//----------------------------------------------------------------------------
void cmVariableWatchCommand::VariableAccessed(const std::string& variable,
int access_type, const char* newValue, const cmMakefile* mf)
{
if ( this->InCallback )
{
return;
}
this->InCallback = true;
cmListFileFunction newLFF;
cmVariableWatchCommandHandler *handler = &this->Handlers[variable];
cmVariableWatchCommandHandler::VectorOfCommands::iterator it;
cmListFileArgument arg;
bool processed = false;
const char* accessString = cmVariableWatch::GetAccessAsString(access_type);
const char* currentListFile = mf->GetDefinition("CMAKE_CURRENT_LIST_FILE");
/// Ultra bad!!
cmMakefile* makefile = const_cast<cmMakefile*>(mf);
std::string stack = makefile->GetProperty("LISTFILE_STACK");
for ( it = handler->Commands.begin(); it != handler->Commands.end();
++ it )
{
std::string command = *it;
newLFF.Arguments.clear();
newLFF.Arguments.push_back(cmListFileArgument(variable, true, "unknown", 9999));
newLFF.Arguments.push_back(cmListFileArgument(accessString, true, "unknown", 9999));
newLFF.Arguments.push_back(cmListFileArgument(newValue?newValue:"", true, "unknown", 9999));
newLFF.Arguments.push_back(cmListFileArgument(currentListFile, true, "unknown", 9999));
newLFF.Arguments.push_back(cmListFileArgument(stack, true, "unknown", 9999));
newLFF.Name = command;
newLFF.FilePath = "Some weird path";
newLFF.Line = 9999;
if(!makefile->ExecuteCommand(newLFF))
{
arg.FilePath = "Unknown";
arg.Line = 0;
cmOStringStream error;
error << "Error in cmake code at\n"
<< arg.FilePath << ":" << arg.Line << ":\n"
<< "A command failed during the invocation of callback\""
<< command << "\".";
cmSystemTools::Error(error.str().c_str());
this->InCallback = false;
return;
}
processed = true;
}
if ( !processed )
{
cmOStringStream msg;
msg << "* Variable \"" << variable.c_str() << "\" was accessed using "
<< accessString << " in: " << currentListFile << std::endl;
msg << " The value of the variable: \"" << newValue << "\"" << std::endl;
msg << " The list file stack: " << stack.c_str();
cmSystemTools::Message(msg.str().c_str());
std::vector<std::string> vars = makefile->GetDefinitions();
cmOStringStream msg2;
size_t cc;
for ( cc = 0; cc < vars.size(); cc ++ )
{
if ( vars[cc] == variable )
{
continue;
}
msg2 << vars[cc] << " = \"" << makefile->GetDefinition(vars[cc].c_str()) << "\"" << std::endl;
}
//cmSystemTools::Message(msg2.str().c_str());
}
this->InCallback = false;
}

98
Source/cmVariableWatchCommand.h Normal file
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@ -0,0 +1,98 @@
/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef cmVariableWatchCommand_h
#define cmVariableWatchCommand_h
#include "cmCommand.h"
class cmVariableWatchCommandHandler
{
public:
typedef std::vector<std::string> VectorOfCommands;
VectorOfCommands Commands;
};
/** \class cmVariableWatchCommand
* \brief Watch when the variable changes and invoke command
*
*/
class cmVariableWatchCommand : public cmCommand
{
public:
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone()
{
return new cmVariableWatchCommand;
}
//! Default constructor
cmVariableWatchCommand();
/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
virtual bool InitialPass(std::vector<std::string> const& args);
/**
* This determines if the command is invoked when in script mode.
*/
virtual bool IsScriptable() { return true; }
/**
* The name of the command as specified in CMakeList.txt.
*/
virtual const char* GetName() { return "VARIABLE_WATCH";}
/**
* Succinct documentation.
*/
virtual const char* GetTerseDocumentation()
{
return "Watch the CMake variable for change.";
}
/**
* More documentation.
*/
virtual const char* GetFullDocumentation()
{
return
" VARIABLE_WATCH(<variable name> [<command to execute>])\n"
"If the specified variable changes, the message will be printed about "
"the variable being changed. If the command is spceified, the command "
"will be executed. The command will receive the following arguments:"
" COMMAND(<variable> <access> <value> <current list file> <stack>)";
}
cmTypeMacro(cmVariableWatchCommand, cmCommand);
void VariableAccessed(const std::string& variable, int access_type,
const char* newValue, const cmMakefile* mf);
protected:
std::map<std::string, cmVariableWatchCommandHandler> Handlers;
bool InCallback;
};
#endif

2
Source/cmake.cxx
View File

@ -88,7 +88,7 @@
#include <memory> // auto_ptr
void cmNeedBackwardsCompatibility(const std::string& variable,
int access_type, void* )
int access_type, void*, const char*, const cmMakefile*)
{
#ifdef CMAKE_BUILD_WITH_CMAKE
if (access_type == cmVariableWatch::UNKNOWN_VARIABLE_READ_ACCESS)

3
Tests/CMakeTests/CMakeLists.txt
View File

@ -4,7 +4,8 @@ SET(CMAKE_EXECUTABLE "${EXECUTABLE_OUTPUT_PATH}/cmake")
MACRO(AddCMakeTest TestName Arguments)
CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/${TestName}Test.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/${TestName}Test.cmake" @ONLY IMMEDIATE)
ADD_TEST(CMake.List ${CMAKE_EXECUTABLE} -P "${CMAKE_CURRENT_BINARY_DIR}/ListTest.cmake" ${Arguments})
ADD_TEST(CMake.${TestName} ${CMAKE_EXECUTABLE} -P "${CMAKE_CURRENT_BINARY_DIR}/${TestName}Test.cmake" ${Arguments})
ENDMACRO(AddCMakeTest)
AddCMakeTest(List "")
AddCMakeTest(VariableWatch "")

22
Tests/CMakeTests/VariableWatchTest.cmake.in Normal file
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@ -0,0 +1,22 @@
MESSAGE("Start")
VARIABLE_WATCH(TESTVAR MESSAGE)
VARIABLE_WATCH(TESTVAR1)
macro(testwatch var access file stack)
MESSAGE("There was a ${access} access done on the variable: ${var} in file ${file}")
MESSAGE("List file stack is: ${stack}")
endmacro(testwatch)
VARIABLE_WATCH(somevar testwatch)
set(TESTVAR1 "1")
set(TESTVAR "1")
set(TESTVAR1 "0")
set(TESTVAR "0")
message("Variable: ${somevar}")
set(somevar "1")
message("Variable: ${somevar}")
remove(somevar)