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120 lines
3.0 KiB
C++
120 lines
3.0 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#ifndef cmCommand_h
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#define cmCommand_h
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#include <cmConfigure.h>
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#include <string>
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#include <vector>
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#include "cmCommandArgumentsHelper.h"
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#include "cmPolicies.h"
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class cmExecutionStatus;
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class cmMakefile;
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struct cmListFileArgument;
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/** \class cmCommand
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* \brief Superclass for all commands in CMake.
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*
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* cmCommand is the base class for all commands in CMake. A command
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* manifests as an entry in CMakeLists.txt and produces one or
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* more makefile rules. Commands are associated with a particular
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* makefile. This base class cmCommand defines the API for commands
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* to support such features as enable/disable, inheritance,
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* documentation, and construction.
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*/
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class cmCommand
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{
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public:
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/**
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* Construct the command. By default it has no makefile.
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*/
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cmCommand()
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: Makefile(CM_NULLPTR)
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{
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}
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/**
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* Need virtual destructor to destroy real command type.
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*/
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virtual ~cmCommand() {}
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/**
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* Specify the makefile.
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*/
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void SetMakefile(cmMakefile* m) { this->Makefile = m; }
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cmMakefile* GetMakefile() { return this->Makefile; }
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/**
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* This is called by the cmMakefile when the command is first
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* encountered in the CMakeLists.txt file. It expands the command's
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* arguments and then invokes the InitialPass.
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*/
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virtual bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
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cmExecutionStatus& status);
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/**
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* This is called when the command is first encountered in
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* the CMakeLists.txt file.
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*/
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virtual bool InitialPass(std::vector<std::string> const& args,
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cmExecutionStatus&) = 0;
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/**
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* This is called at the end after all the information
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* specified by the command is accumulated. Most commands do
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* not implement this method. At this point, reading and
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* writing to the cache can be done.
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*/
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virtual void FinalPass() {}
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/**
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* Does this command have a final pass? Query after InitialPass.
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*/
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virtual bool HasFinalPass() const { return false; }
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/**
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* This is a virtual constructor for the command.
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*/
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virtual cmCommand* Clone() = 0;
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/**
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* This determines if the command is invoked when in script mode.
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*/
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virtual bool IsScriptable() const { return false; }
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/**
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* This determines if the command is defined in a cmake script.
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* It is the case for cmMacroHelperCommand and cmFunctionHelperCommand.
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*/
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virtual bool IsUserDefined() const { return false; }
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/**
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* The name of the command as specified in CMakeList.txt.
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*/
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virtual std::string GetName() const = 0;
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/**
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* Return the last error string.
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*/
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const char* GetError();
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/**
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* Set the error message
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*/
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void SetError(const std::string& e);
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/** Check if the command is disallowed by a policy. */
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bool Disallowed(cmPolicies::PolicyID pol, const char* e);
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protected:
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cmMakefile* Makefile;
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cmCommandArgumentsHelper Helper;
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private:
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std::string Error;
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};
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#endif
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