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| # CMAKE_PARSE_ARGUMENTS(<prefix> <options> <one_value_keywords> <multi_value_keywords> args...) | ||
| # | ||
| # CMAKE_PARSE_ARGUMENTS() is intended to be used in macros or functions for | ||
| # parsing the arguments given to that macro or function. | ||
| # It processes the arguments and defines a set of variables which hold the | ||
| # values of the respective options. | ||
| # | ||
| # The <options> argument contains all options for the respective macro, | ||
| # i.e. keywords which can be used when calling the macro without any value | ||
| # following, like e.g. the OPTIONAL keyword of the install() command. | ||
| # | ||
| # The <one_value_keywords> argument contains all keywords for this macro | ||
| # which are followed by one value, like e.g. DESTINATION keyword of the | ||
| # install() command. | ||
| # | ||
| # The <multi_value_keywords> argument contains all keywords for this macro | ||
| # which can be followed by more than one value, like e.g. the TARGETS or | ||
| # FILES keywords of the install() command. | ||
| # | ||
| # When done, CMAKE_PARSE_ARGUMENTS() will have defined for each of the | ||
| # keywords listed in <options>, <one_value_keywords> and | ||
| # <multi_value_keywords> a variable composed of the given <prefix> | ||
| # followed by "_" and the name of the respective keyword. | ||
| # These variables will then hold the respective value from the argument list. | ||
| # For the <options> keywords this will be TRUE or FALSE. | ||
| # | ||
| # All remaining arguments are collected in a variable | ||
| # <prefix>_UNPARSED_ARGUMENTS, this can be checked afterwards to see whether | ||
| # your macro was called with unrecognized parameters. | ||
| # | ||
| # As an example here a my_install() macro, which takes similar arguments as the | ||
| # real install() command: | ||
| # | ||
| # function(MY_INSTALL) | ||
| # set(options OPTIONAL FAST) | ||
| # set(oneValueArgs DESTINATION RENAME) | ||
| # set(multiValueArgs TARGETS CONFIGURATIONS) | ||
| # cmake_parse_arguments(MY_INSTALL "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN} ) | ||
| # ... | ||
| # | ||
| # Assume my_install() has been called like this: | ||
| # my_install(TARGETS foo bar DESTINATION bin OPTIONAL blub) | ||
| # | ||
| # After the cmake_parse_arguments() call the macro will have set the following | ||
| # variables: | ||
| # MY_INSTALL_OPTIONAL = TRUE | ||
| # MY_INSTALL_FAST = FALSE (this option was not used when calling my_install() | ||
| # MY_INSTALL_DESTINATION = "bin" | ||
| # MY_INSTALL_RENAME = "" (was not used) | ||
| # MY_INSTALL_TARGETS = "foo;bar" | ||
| # MY_INSTALL_CONFIGURATIONS = "" (was not used) | ||
| # MY_INSTALL_UNPARSED_ARGUMENTS = "blub" (no value expected after "OPTIONAL" | ||
| # | ||
| # You can the continue and process these variables. | ||
| # | ||
| # Keywords terminate lists of values, e.g. if directly after a one_value_keyword | ||
| # another recognized keyword follows, this is interpreted as the beginning of | ||
| # the new option. | ||
| # E.g. my_install(TARGETS foo DESTINATION OPTIONAL) would result in | ||
| # MY_INSTALL_DESTINATION set to "OPTIONAL", but MY_INSTALL_DESTINATION would | ||
| # be empty and MY_INSTALL_OPTIONAL would be set to TRUE therefor. | ||
|
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||
| #============================================================================= | ||
| # Copyright 2010 Alexander Neundorf <neundorf@kde.org> | ||
| # | ||
| # Distributed under the OSI-approved BSD License (the "License"); | ||
| # see accompanying file Copyright.txt for details. | ||
| # | ||
| # This software is distributed WITHOUT ANY WARRANTY; without even the | ||
| # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
| # See the License for more information. | ||
| #============================================================================= | ||
| # (To distribute this file outside of CMake, substitute the full | ||
| # License text for the above reference.) | ||
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| if(__CMAKE_PARSE_ARGUMENTS_INCLUDED) | ||
| return() | ||
| endif() | ||
| set(__CMAKE_PARSE_ARGUMENTS_INCLUDED TRUE) | ||
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| function(CMAKE_PARSE_ARGUMENTS prefix _optionNames _singleArgNames _multiArgNames) | ||
| # first set all result variables to empty/FALSE | ||
| foreach(arg_name ${_singleArgNames} ${_multiArgNames}) | ||
| set(${prefix}_${arg_name}) | ||
| endforeach(arg_name) | ||
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| foreach(option ${_optionNames}) | ||
| set(${prefix}_${option} FALSE) | ||
| endforeach(option) | ||
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| set(${prefix}_UNPARSED_ARGUMENTS) | ||
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| set(insideValues FALSE) | ||
| set(currentArgName) | ||
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| # now iterate over all arguments and fill the result variables | ||
| foreach(currentArg ${ARGN}) | ||
| list(FIND _optionNames "${currentArg}" optionIndex) # ... then this marks the end of the arguments belonging to this keyword | ||
| list(FIND _singleArgNames "${currentArg}" singleArgIndex) # ... then this marks the end of the arguments belonging to this keyword | ||
| list(FIND _multiArgNames "${currentArg}" multiArgIndex) # ... then this marks the end of the arguments belonging to this keyword | ||
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| if(${optionIndex} EQUAL -1 AND ${singleArgIndex} EQUAL -1 AND ${multiArgIndex} EQUAL -1) | ||
| if(insideValues) | ||
| if("${insideValues}" STREQUAL "SINGLE") | ||
| set(${prefix}_${currentArgName} ${currentArg}) | ||
| set(insideValues FALSE) | ||
| elseif("${insideValues}" STREQUAL "MULTI") | ||
| list(APPEND ${prefix}_${currentArgName} ${currentArg}) | ||
| endif() | ||
| else(insideValues) | ||
| list(APPEND ${prefix}_UNPARSED_ARGUMENTS ${currentArg}) | ||
| endif(insideValues) | ||
| else() | ||
| if(NOT ${optionIndex} EQUAL -1) | ||
| set(${prefix}_${currentArg} TRUE) | ||
| set(insideValues FALSE) | ||
| elseif(NOT ${singleArgIndex} EQUAL -1) | ||
| set(currentArgName ${currentArg}) | ||
| set(${prefix}_${currentArgName}) | ||
| set(insideValues "SINGLE") | ||
| elseif(NOT ${multiArgIndex} EQUAL -1) | ||
| set(currentArgName ${currentArg}) | ||
| set(${prefix}_${currentArgName}) | ||
| set(insideValues "MULTI") | ||
| endif() | ||
| endif() | ||
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| endforeach(currentArg) | ||
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| # propagate the result variables to the caller: | ||
| foreach(arg_name ${_singleArgNames} ${_multiArgNames} ${_optionNames}) | ||
| set(${prefix}_${arg_name} ${${prefix}_${arg_name}} PARENT_SCOPE) | ||
| endforeach(arg_name) | ||
| set(${prefix}_UNPARSED_ARGUMENTS ${${prefix}_UNPARSED_ARGUMENTS} PARENT_SCOPE) | ||
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| endfunction(CMAKE_PARSE_ARGUMENTS _options _singleArgs _multiArgs) |
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